feat: enhance sorting in CourseService for improved course selection

- Added a new column to display open semesters in the academic terms table with badges.
- Removed course registration related pages and components including index, create, and show.
- Updated course registration types to reflect changes in the data structure.
- Refactored admin routes for course registrations to streamline submission handling.

app/Http/Controllers/Admin/Manage/ClassEnrollmentController.php

@@ -3,7 +3,6 @@
 namespace App\Http\Controllers\Admin\Manage;
 
 use App\Http\Controllers\Controller;
-use App\Http\Requests\Admin\Manage\ClassEnrollmentRequest;
 use App\Models\ClassEnrollment;
 use App\Models\CourseClass;
 use App\Services\Admin\Manage\ClassEnrollmentService;
@@ -24,17 +23,9 @@ public function index(CourseClass $courseClass): Response
         return Inertia::render('admin/manage/course-classes/enrollments', [
             'courseClass' => $courseClass,
             'enrollments' => $this->service->forClass($courseClass),
-            'availableStudents' => $this->service->availableStudents($courseClass),
         ]);
     }
 
-    public function store(ClassEnrollmentRequest $request, CourseClass $courseClass): RedirectResponse
-    {
-        $this->service->enrollMany($courseClass, $request->validated('student_ids'));
-
-        return Inertia::flash('toast', ['type' => 'success', 'message' => 'Mahasiswa berhasil ditambahkan ke kelas.'])->back();
-    }
-
     public function destroy(CourseClass $courseClass, ClassEnrollment $enrollment): RedirectResponse
     {
         $this->service->unenroll($enrollment);

app/Http/Controllers/Admin/Manage/CourseClassController.php

@@ -4,6 +4,7 @@
 
 use App\Http\Controllers\Controller;
 use App\Http\Requests\Admin\Manage\CourseClassRequest;
+use App\Http\Requests\Admin\Manage\DuplicateCourseClassesRequest;
 use App\Http\Requests\PaginatedRequest;
 use App\Models\CourseClass;
 use App\Services\Admin\Manage\CourseClassService;
@@ -34,15 +35,21 @@ public function index(PaginatedRequest $request): Response
             'courses' => $this->courseService->getAllForSelect(),
             'lecturers' => $this->lecturerService->getAllForSelect(),
             'academicTerms' => $this->academicTermService->getAllForSelect(),
+            'courseClassAssignments' => $this->service->getAllForSelect(),
             'filters' => $request->only(['academic_term_id', 'method']),
         ]);
     }
 
     public function store(CourseClassRequest $request): RedirectResponse
     {
-        $this->service->create($request->validated());
+        $created = $this->service->createMany($request->validated());
 
-        Inertia::flash('toast', ['type' => 'success', 'message' => 'Kelas mata kuliah berhasil ditambahkan.']);
+        Inertia::flash('toast', [
+            'type' => 'success',
+            'message' => $created->count() > 1
+                ? "{$created->count()} kelas mata kuliah berhasil ditambahkan."
+                : 'Kelas mata kuliah berhasil ditambahkan.',
+        ]);
 
         return to_route('admin.manage.course-classes.index');
     }
@@ -62,4 +69,24 @@ public function destroy(CourseClass $courseClass): RedirectResponse
 
         return Inertia::flash('toast', ['type' => 'success', 'message' => 'Kelas mata kuliah berhasil dihapus.'])->back();
     }
+
+    public function duplicate(DuplicateCourseClassesRequest $request): RedirectResponse
+    {
+        $result = $this->service->duplicateFromTerm(
+            $request->validated('source_academic_term_id'),
+            $request->validated('target_academic_term_id'),
+        );
+
+        $message = $result['created'] > 0
+            ? "{$result['created']} kelas mata kuliah berhasil diduplikasi."
+            : 'Tidak ada kelas mata kuliah baru yang diduplikasi.';
+
+        if ($result['skipped'] > 0) {
+            $message .= " {$result['skipped']} dilewati karena sudah ada di periode tujuan.";
+        }
+
+        Inertia::flash('toast', ['type' => 'success', 'message' => $message]);
+
+        return to_route('admin.manage.course-classes.index');
+    }
 }

app/Http/Controllers/Admin/Manage/CourseRegistrationController.php

@@ -3,17 +3,16 @@
 namespace App\Http\Controllers\Admin\Manage;
 
 use App\Http\Controllers\Controller;
-use App\Http\Requests\Admin\Manage\CourseRegistrationRequest;
 use App\Http\Requests\Admin\Manage\RejectCourseRegistrationRequest;
+use App\Http\Requests\Admin\Manage\SaveCourseRegistrationRequest;
+use App\Http\Requests\Admin\Manage\SignCourseRegistrationRequest;
 use App\Http\Requests\PaginatedRequest;
+use App\Models\Course;
 use App\Models\CourseRegistrationSubmission;
 use App\Models\Student;
-use App\Services\Admin\Manage\CourseClassService;
 use App\Services\Admin\Manage\CourseRegistrationService;
 use App\Services\Admin\Master\AcademicTermService;
-use App\Services\Admin\Users\StudentService;
 use Illuminate\Http\RedirectResponse;
-use Illuminate\Http\Request;
 use Inertia\Inertia;
 use Inertia\Response;
 
@@ -21,109 +20,154 @@ class CourseRegistrationController extends Controller
 {
     public function __construct(
         private readonly CourseRegistrationService $service,
-        private readonly StudentService $studentService,
         private readonly AcademicTermService $academicTermService,
-        private readonly CourseClassService $courseClassService,
     ) {}
 
-    public function index(PaginatedRequest $request): Response
+    public function index(PaginatedRequest $request): Response|RedirectResponse
     {
+        $user = auth()->user();
+
+        if ($user->hasRole('mahasiswa')) {
+            return to_route('admin.manage.course-registrations.show', $user->student->id);
+        }
+
+        $isKaprodi = $user->hasRole('kaprodi');
+
         return Inertia::render('admin/manage/course-registrations/index', [
+            'departments' => $this->service->departmentSummary(),
             'registrations' => $this->service->paginated(
                 ...$request->validatedWithDefaults(),
-                status: $request->validated('status'),
-                academicTermId: $request->validated('academic_term_id'),
+                departmentId: $request->validated('department_id'),
+                advisorLecturerId: ! $isKaprodi && $user->hasRole('dosen') ? $user->lecturer?->id : null,
+                ledDepartmentIds: $isKaprodi ? $user->ledDepartmentIds() : null,
             ),
-            'students' => $this->studentService->getAllForSelect(),
-            'academicTerms' => $this->academicTermService->getAllForSelect(),
-            'courseClasses' => $this->courseClassService->getAllForSelect(),
-            'filters' => $request->only(['status', 'academic_term_id']),
+            'filters' => $request->only(['department_id']),
         ]);
     }
 
-    public function mine(Request $request): Response
+    public function show(Student $student): Response
     {
-        $student = $this->currentStudent($request);
+        $user = auth()->user();
+        $isStudent = $user->hasRole('mahasiswa');
 
-        $term = $this->academicTermService->getActive();
-        $payment = $term ? $this->service->paymentStatus($student, $term) : null;
-        $activeSubmission = $term ? $this->service->currentSubmission($student, $term) : null;
+        abort_if($isStudent && $user->student->id !== $student->id, 403);
+        abort_if(! $isStudent && ! $user->canAccessCourseRegistrationOf($student), 403);
 
-        return Inertia::render('student/course-registrations/index', [
-            'academicTerm' => $term,
-            'payment' => $payment,
-            'canSubmit' => $this->service->canSubmit($activeSubmission),
-            'activeSubmission' => $activeSubmission,
-            'submissions' => $this->service->submissionsFor($student),
-        ]);
-    }
+        $backHref = $isStudent
+            ? null
+            : route('admin.manage.course-registrations.index');
 
-    public function create(Request $request): Response|RedirectResponse
-    {
-        $student = $this->currentStudent($request);
+        $canReview = ! $isStudent
+            && $user->can('approve-course-registrations')
+            && $user->canReviewCourseRegistrationOf($student);
 
-        $student->load(['user.profile', 'department', 'academicAdvisor.user.profile']);
+        $canSignAsKaprodi = $user->isKaprodiOf($student);
+        $canSignAsAdvisor = $user->isAdvisorOf($student);
 
-        $term = $this->academicTermService->getActive();
-        $payment = $term ? $this->service->paymentStatus($student, $term) : null;
-        $submission = $term ? $this->service->currentSubmission($student, $term) : null;
+        $activeTerm = $this->academicTermService->getActive();
+        $allCourseClasses = $activeTerm
+            ? $this->service->availableCourseClasses($student->department_id, $activeTerm->id)
+            : collect();
 
-        if (! $term || ! $payment['is_paid'] || ! $this->service->canSubmit($submission)) {
-            return to_route('student.course-registrations.index');
-        }
+        $departmentCourses = $this->service->departmentCourses($student->department_id);
 
-        return Inertia::render('student/course-registrations/create', [
-            'student' => $student,
-            'academicTerm' => $term,
-            'submission' => $submission,
-            'availableCourses' => $this->service->availableCourseClasses($student, $term),
-        ]);
-    }
+        $semesters = $departmentCourses
+            ->map(fn (Course $course) => $course->semester_number)
+            ->unique()
+            ->sort()
+            ->values();
 
-    public function show(Request $request, CourseRegistrationSubmission $submission): Response
-    {
-        if ($request->routeIs('student.*')) {
-            $student = $this->currentStudent($request);
-
-            abort_if($submission->student_id !== $student->id, 403);
-
-            return Inertia::render('student/course-registrations/show', [
-                'submission' => $this->service->withDetails($submission),
-            ]);
-        }
+        $submissions = $activeTerm
+            ? $semesters->mapWithKeys(fn (?int $semesterNumber) => [
+                CourseRegistrationSubmission::semesterKey($semesterNumber) => $this->service->buildSubmissionPayload(
+                    $student,
+                    $activeTerm,
+                    $semesterNumber,
+                    $departmentCourses,
+                    $allCourseClasses,
+                ),
+            ])
+            : collect();
 
         return Inertia::render('admin/manage/course-registrations/show', [
-            'submission' => $this->service->withDetails($submission),
+            'submissions' => $submissions,
+            'semesters' => $semesters->values(),
+            'openSemesters' => $activeTerm?->open_semesters ?? [],
+            'studentCurrentSemester' => $student->current_semester,
+            'hasActiveTerm' => $activeTerm !== null,
+            'backHref' => $backHref,
+            'canReview' => $canReview,
+            'canSignAsKaprodi' => $canSignAsKaprodi,
+            'canSignAsAdvisor' => $canSignAsAdvisor,
         ]);
     }
 
-    public function store(CourseRegistrationRequest $request): RedirectResponse
+    public function save(Student $student, string $semester, SaveCourseRegistrationRequest $request): RedirectResponse
     {
-        if ($request->routeIs('student.*')) {
-            $student = $this->currentStudent($request);
-            $term = $this->academicTermService->getActive();
+        $semesterNumber = CourseRegistrationSubmission::parseSemesterKey($semester);
 
-            $submission = $this->service->sign(
-                $student,
-                $term,
-                $request->validated('course_class_ids'),
-                $request->file('signature'),
-            );
+        $activeTerm = $this->academicTermService->getActive();
 
-            Inertia::flash('toast', ['type' => 'success', 'message' => 'KRS berhasil ditandatangani.']);
+        abort_if($activeTerm === null, 422);
 
-            return to_route('student.course-registrations.show', $submission);
-        }
+        $selectableIds = $this->service->selectableCourseClassIds(
+            $student->department_id,
+            $activeTerm->id,
+            $semesterNumber,
+            $activeTerm->open_semesters ?? [],
+            $student->current_semester,
+        );
 
-        $this->service->create($request->validated());
+        $selectedIds = array_values(array_intersect(
+            $request->validated('course_class_ids') ?? [],
+            $selectableIds,
+        ));
 
-        Inertia::flash('toast', ['type' => 'success', 'message' => 'Registrasi KRS berhasil ditambahkan.']);
+        $submission = $this->service->findOrCreateForStudent($student, $activeTerm, $semesterNumber);
 
-        return to_route('admin.manage.course-registrations.index');
+        $this->service->saveRegistrations(
+            $submission,
+            $selectedIds,
+            $activeTerm->id,
+            $student->id,
+            $request->file('signature'),
+        );
+
+        Inertia::flash('toast', ['type' => 'success', 'message' => 'KRS berhasil disimpan.']);
+
+        return to_route('admin.manage.course-registrations.show', $student->id);
+    }
+
+    public function signAsKaprodi(Student $student, string $semester, SignCourseRegistrationRequest $request): RedirectResponse
+    {
+        abort_unless(auth()->user()->isKaprodiOf($student), 403);
+
+        $submission = $this->service->findOrCreateForSemester($student, $semester);
+
+        $this->service->signAsKaprodi($submission, $request->file('signature'));
+
+        Inertia::flash('toast', ['type' => 'success', 'message' => 'Tanda tangan berhasil disimpan.']);
+
+        return to_route('admin.manage.course-registrations.show', $student->id);
+    }
+
+    public function signAsAdvisor(Student $student, string $semester, SignCourseRegistrationRequest $request): RedirectResponse
+    {
+        abort_unless(auth()->user()->isAdvisorOf($student), 403);
+
+        $submission = $this->service->findOrCreateForSemester($student, $semester);
+
+        $this->service->signAsAdvisor($submission, $request->file('signature'));
+
+        Inertia::flash('toast', ['type' => 'success', 'message' => 'Tanda tangan berhasil disimpan.']);
+
+        return to_route('admin.manage.course-registrations.show', $student->id);
     }
 
     public function approve(CourseRegistrationSubmission $submission): RedirectResponse
     {
+        abort_unless(auth()->user()->canReviewCourseRegistrationOf($submission->student), 403);
+
         $this->service->approve($submission);
 
         return Inertia::flash('toast', ['type' => 'success', 'message' => 'KRS berhasil disetujui.'])->back();
@@ -131,17 +175,10 @@ public function approve(CourseRegistrationSubmission $submission): RedirectRespo
 
     public function reject(RejectCourseRegistrationRequest $request, CourseRegistrationSubmission $submission): RedirectResponse
     {
+        abort_unless(auth()->user()->canReviewCourseRegistrationOf($submission->student), 403);
+
         $this->service->reject($submission, $request->validated('reason'));
 
         return Inertia::flash('toast', ['type' => 'success', 'message' => 'KRS berhasil ditolak.'])->back();
     }
-
-    private function currentStudent(Request $request): Student
-    {
-        $student = $request->user()->student;
-
-        abort_if(! $student, 403);
-
-        return $student;
-    }
 }

app/Http/Controllers/Admin/Master/DepartmentController.php

@@ -7,6 +7,7 @@
 use App\Http\Requests\PaginatedRequest;
 use App\Models\Department;
 use App\Services\Admin\Master\DepartmentService;
+use App\Services\Admin\Users\LecturerService;
 use Illuminate\Http\RedirectResponse;
 use Inertia\Inertia;
 use Inertia\Response;
@@ -15,12 +16,14 @@ class DepartmentController extends Controller
 {
     public function __construct(
         private readonly DepartmentService $service,
+        private readonly LecturerService $lecturerService,
     ) {}
 
     public function index(PaginatedRequest $request): Response
     {
         return Inertia::render('admin/master/departments/index', [
             'departments' => $this->service->paginated(...$request->validatedWithDefaults()),
+            'lecturers' => $this->lecturerService->getAllForSelect(),
         ]);
     }
 

app/Http/Requests/Admin/Manage/ClassEnrollmentRequest.php

@@ -1,29 +0,0 @@
-<?php
-
-namespace App\Http\Requests\Admin\Manage;
-
-use Illuminate\Foundation\Http\FormRequest;
-use Illuminate\Validation\Rule;
-
-class ClassEnrollmentRequest extends FormRequest
-{
-    public function authorize(): bool
-    {
-        return $this->user()->can('create-course-class-enrollments');
-    }
-
-    public function rules(): array
-    {
-        $courseClass = $this->route('course_class');
-        $departmentId = $courseClass->course->department_id;
-
-        return [
-            'student_ids' => ['required', 'array', 'min:1'],
-            'student_ids.*' => [
-                'integer',
-                Rule::exists('students', 'id')->where('department_id', $departmentId),
-                Rule::unique('class_enrollments', 'student_id')->where('course_class_id', $courseClass->id),
-            ],
-        ];
-    }
-}

app/Http/Requests/Admin/Manage/CourseClassRequest.php

@@ -3,7 +3,10 @@
 namespace App\Http\Requests\Admin\Manage;
 
 use App\Enums\ClassMethod;
+use App\Enums\Semester;
+use App\Models\AcademicTerm;
 use App\Models\Course;
+use App\Models\Lecturer;
 use Illuminate\Foundation\Http\FormRequest;
 use Illuminate\Validation\Rule;
 
@@ -16,10 +19,73 @@ public function authorize(): bool
 
     public function rules(): array
     {
+        $academicTermId = $this->input('academic_term_id');
+        $academicTerm = $academicTermId ? AcademicTerm::find($academicTermId) : null;
+
+        $semesterParityRule = function ($attribute, $value, $fail) use ($academicTerm) {
+            if (! $academicTerm) {
+                return;
+            }
+
+            $semesterNumber = Course::find($value)?->semester_number;
+
+            if ($semesterNumber === null) {
+                return;
+            }
+
+            $isOddSemester = $semesterNumber % 2 === 1;
+            $matches = $academicTerm->semester === Semester::odd ? $isOddSemester : ! $isOddSemester;
+
+            if (! $matches) {
+                $fail('Mata kuliah semester '.$semesterNumber.' tidak sesuai dengan periode '.$academicTerm->semester->label().'.');
+            }
+        };
+
+        if ($this->isMethod('post')) {
+            return [
+                'course_ids' => ['required', 'array', 'min:1'],
+                'course_ids.*' => [
+                    'integer',
+                    Rule::exists('courses', 'id'),
+                    Rule::unique('course_classes', 'course_id')
+                        ->where('academic_term_id', $academicTermId)
+                        ->whereNull('deleted_at'),
+                    $semesterParityRule,
+                ],
+                'lecturer_id' => [
+                    'required',
+                    'integer',
+                    function ($attribute, $value, $fail) {
+                        $courseIds = (array) $this->input('course_ids', []);
+                        $departmentIds = Course::whereIn('id', $courseIds)->pluck('department_id')->unique();
+                        $lecturer = Lecturer::find($value);
+                        $coveredDepartmentIds = $lecturer
+                            ? $lecturer->departments()->pluck('departments.id')
+                            : collect();
+
+                        if ($departmentIds->diff($coveredDepartmentIds)->isNotEmpty()) {
+                            $fail('Dosen tidak terdaftar di jurusan seluruh mata kuliah yang dipilih.');
+                        }
+                    },
+                ],
+                'academic_term_id' => ['required', 'integer', Rule::exists('academic_terms', 'id')],
+                'method' => ['nullable', 'string', Rule::in(ClassMethod::values())],
+            ];
+        }
+
         $departmentId = Course::find($this->input('course_id'))?->department_id;
 
         return [
-            'course_id' => ['required', 'integer', Rule::exists('courses', 'id')],
+            'course_id' => [
+                'required',
+                'integer',
+                Rule::exists('courses', 'id'),
+                Rule::unique('course_classes', 'course_id')
+                    ->where('academic_term_id', $academicTermId)
+                    ->whereNull('deleted_at')
+                    ->ignore($this->route('course_class')?->id),
+                $semesterParityRule,
+            ],
             'lecturer_id' => [
                 'required',
                 'integer',

app/Http/Requests/Admin/Manage/CourseRegistrationRequest.php

@@ -1,75 +0,0 @@
-<?php
-
-namespace App\Http\Requests\Admin\Manage;
-
-use App\Services\Admin\Manage\CourseRegistrationService;
-use App\Services\Admin\Master\AcademicTermService;
-use Illuminate\Foundation\Http\FormRequest;
-use Illuminate\Validation\Rule;
-
-class CourseRegistrationRequest extends FormRequest
-{
-    public function authorize(): bool
-    {
-        if (! $this->routeIs('student.*')) {
-            return $this->user()->can('create-course-registrations');
-        }
-
-        $student = $this->user()->student;
-
-        if (! $student) {
-            return false;
-        }
-
-        $term = app(AcademicTermService::class)->getActive();
-
-        if (! $term) {
-            return false;
-        }
-
-        $service = app(CourseRegistrationService::class);
-        $submission = $service->currentSubmission($student, $term);
-
-        if (! $service->canSubmit($submission)) {
-            return false;
-        }
-
-        return $service->paymentStatus($student, $term)['is_paid'];
-    }
-
-    public function rules(): array
-    {
-        if ($this->routeIs('student.*')) {
-            $student = $this->user()->student;
-            $term = app(AcademicTermService::class)->getActive();
-            $allowedIds = $student && $term
-                ? app(CourseRegistrationService::class)->allowedCourseClassIds($student, $term)
-                : [];
-
-            return [
-                'course_class_ids' => ['required', 'array', 'min:1'],
-                'course_class_ids.*' => ['integer', Rule::in($allowedIds)],
-                'signature' => ['required', 'image', 'max:2048'],
-            ];
-        }
-
-        return [
-            'student_id' => ['required', 'integer', Rule::exists('students', 'id')],
-            'academic_term_id' => ['required', 'integer', Rule::exists('academic_terms', 'id')],
-            'course_class_ids' => ['required', 'array', 'min:1'],
-            'course_class_ids.*' => [
-                'integer',
-                Rule::exists('course_classes', 'id'),
-                Rule::unique('course_registrations', 'course_class_id')
-                    ->where('student_id', $this->input('student_id')),
-            ],
-        ];
-    }
-
-    public function attributes(): array
-    {
-        return [
-            'course_class_ids' => 'mata kuliah',
-        ];
-    }
-}

app/Http/Requests/Admin/Manage/DuplicateCourseClassesRequest.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace App\Http\Requests\Admin\Manage;
+
+use App\Models\AcademicTerm;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+use Illuminate\Validation\Validator;
+
+class DuplicateCourseClassesRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return $this->user()->can('create-course-classes');
+    }
+
+    public function rules(): array
+    {
+        return [
+            'source_academic_term_id' => ['required', 'integer', Rule::exists('academic_terms', 'id')],
+            'target_academic_term_id' => ['required', 'integer', Rule::exists('academic_terms', 'id')],
+        ];
+    }
+
+    public function withValidator(Validator $validator): void
+    {
+        $validator->after(function (Validator $validator) {
+            if ($this->input('source_academic_term_id') === $this->input('target_academic_term_id')) {
+                $validator->errors()->add('target_academic_term_id', 'Periode tujuan harus berbeda dari periode sumber.');
+
+                return;
+            }
+
+            $sourceTerm = AcademicTerm::find($this->input('source_academic_term_id'));
+            $targetTerm = AcademicTerm::find($this->input('target_academic_term_id'));
+
+            if ($sourceTerm && $targetTerm && $sourceTerm->semester !== $targetTerm->semester) {
+                $validator->errors()->add('target_academic_term_id', 'Periode tujuan harus semester yang sama dengan periode sumber (Ganjil ke Ganjil, Genap ke Genap).');
+            }
+        });
+    }
+}

app/Http/Requests/Admin/Manage/SaveCourseRegistrationRequest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Http\Requests\Admin\Manage;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class SaveCourseRegistrationRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        $student = $this->route('student');
+
+        return $this->user()->hasRole('mahasiswa')
+            && $this->user()->student?->id === $student?->id;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'course_class_ids' => ['array'],
+            'course_class_ids.*' => ['integer'],
+            'signature' => ['nullable', 'file', 'image', 'max:2048'],
+        ];
+    }
+}

app/Http/Requests/Admin/Manage/SignCourseRegistrationRequest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Http\Requests\Admin\Manage;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class SignCourseRegistrationRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'signature' => ['required', 'file', 'image', 'max:2048'],
+        ];
+    }
+}

app/Http/Requests/Admin/Master/AcademicTermRequest.php

@@ -16,13 +16,13 @@ public function authorize(): bool
     public function rules(): array
     {
         return [
-            'name' => [
+            'academic_year' => [
                 'required',
                 'string',
                 'max:20',
                 function ($attribute, $value, $fail) {
                     if (! preg_match('/^(\d{4})\/(\d{4})$/', $value, $matches)) {
-                        $fail('Format name harus YYYY/YYYY, contoh: 2025/2026.');
+                        $fail('Format tahun ajaran harus YYYY/YYYY, contoh: 2025/2026.');
 
                         return;
                     }
@@ -40,45 +40,21 @@ function ($attribute, $value, $fail) {
                 'string',
                 Rule::in(Semester::values()),
                 Rule::unique('academic_terms')->where(function ($query) {
-                    return $query->where('name', $this->input('name'));
+                    return $query->where('academic_year', $this->input('academic_year'));
                 })->ignore($this->route('academic_term')),
             ],
             'start_date' => [
                 'required',
                 'date',
-                function ($attribute, $value, $fail) {
-                    $name = $this->input('name');
-                    $semester = $this->input('semester');
-                    if ($name && preg_match('/^(\d{4})\/(\d{4})$/', $name, $matches)) {
-                        $startYear = (int) $matches[1];
-                        $endYear = (int) $matches[2];
-                        $dateYear = (int) date('Y', strtotime($value));
-                        $expectedYear = $semester === 'even' ? $endYear : $startYear;
-                        if ($dateYear !== $expectedYear) {
-                            $fail('Start date harus berada di tahun '.$expectedYear.' untuk semester '.($semester === 'even' ? 'Genap' : 'Ganjil').'.');
-                        }
-                    }
-                },
             ],
             'end_date' => [
                 'required',
                 'date',
                 'after_or_equal:start_date',
-                function ($attribute, $value, $fail) {
-                    $name = $this->input('name');
-                    $semester = $this->input('semester');
-                    if ($name && preg_match('/^(\d{4})\/(\d{4})$/', $name, $matches)) {
-                        $startYear = (int) $matches[1];
-                        $endYear = (int) $matches[2];
-                        $dateYear = (int) date('Y', strtotime($value));
-                        $expectedYear = $semester === 'even' ? $endYear : $startYear;
-                        if ($dateYear !== $expectedYear) {
-                            $fail('End date harus berada di tahun '.$expectedYear.' untuk semester '.($semester === 'even' ? 'Genap' : 'Ganjil').'.');
-                        }
-                    }
-                },
             ],
             'is_active' => ['boolean'],
+            'open_semesters' => ['nullable', 'array'],
+            'open_semesters.*' => ['integer', 'between:1,8'],
         ];
     }
 }

app/Http/Requests/Admin/Master/DepartmentRequest.php

@@ -23,6 +23,14 @@ public function rules(): array
             ],
             'name' => ['required', 'string', 'max:100'],
             'degree_level' => ['nullable', 'string', Rule::in(['D3', 'D4', 'S1', 'S2', 'S3'])],
+            'lecturer_id' => [
+                'nullable',
+                Rule::requiredIf($this->route('department') !== null),
+                'integer',
+                Rule::exists('lecturer_department', 'lecturer_id')
+                    ->where('department_id', $this->route('department')?->id ?? 0),
+            ],
+            'leadership_started_at' => ['nullable', 'date', 'required_with:lecturer_id'],
         ];
     }
 }

app/Http/Requests/Admin/Users/Student/StudentRequest.php

@@ -73,7 +73,8 @@ public function rules(): array
             'academic_advisor_id' => [
                 'required',
                 'integer',
-                Rule::exists('lecturers', 'id'),
+                Rule::exists('lecturer_department', 'lecturer_id')
+                    ->where('department_id', $this->input('department_id')),
             ],
             'status' => [
                 'nullable',

app/Models/AcademicTerm.php

@@ -28,6 +28,7 @@ protected function casts(): array
             'start_date' => 'date',
             'end_date' => 'date',
             'is_active' => 'boolean',
+            'open_semesters' => 'array',
         ];
     }
 

app/Models/CourseRegistrationSubmission.php

@@ -13,7 +13,7 @@
 use Spatie\MediaLibrary\InteractsWithMedia;
 
 #[Guarded(['id'])]
-#[Appends(['signature_url'])]
+#[Appends(['signature_url', 'kaprodi_signature_url', 'advisor_signature_url'])]
 class CourseRegistrationSubmission extends Model implements HasMedia
 {
     use InteractsWithMedia;
@@ -22,6 +22,7 @@ protected function casts(): array
     {
         return [
             'status' => RegistrationStatus::class,
+            'semester_number' => 'integer',
             'signed_at' => 'datetime',
             'reviewed_at' => 'datetime',
         ];
@@ -30,6 +31,8 @@ protected function casts(): array
     public function registerMediaCollections(): void
     {
         $this->addMediaCollection('signature')->singleFile();
+        $this->addMediaCollection('kaprodi_signature')->singleFile();
+        $this->addMediaCollection('advisor_signature')->singleFile();
     }
 
     public function student(): BelongsTo
@@ -63,4 +66,28 @@ protected function signatureUrl(): Attribute
             get: fn () => $this->getFirstMediaUrl('signature') ?: null,
         );
     }
+
+    protected function kaprodiSignatureUrl(): Attribute
+    {
+        return Attribute::make(
+            get: fn () => $this->getFirstMediaUrl('kaprodi_signature') ?: null,
+        );
+    }
+
+    protected function advisorSignatureUrl(): Attribute
+    {
+        return Attribute::make(
+            get: fn () => $this->getFirstMediaUrl('advisor_signature') ?: null,
+        );
+    }
+
+    public static function semesterKey(?int $semesterNumber): string
+    {
+        return $semesterNumber === null ? 'lainnya' : (string) $semesterNumber;
+    }
+
+    public static function parseSemesterKey(string $semester): ?int
+    {
+        return $semester === 'lainnya' ? null : (int) $semester;
+    }
 }

app/Models/User.php

@@ -62,4 +62,54 @@ public function feedbacks(): HasMany
     {
         return $this->hasMany(Feedback::class);
     }
+
+    public function isAdvisorOf(Student $student): bool
+    {
+        return $this->hasRole('dosen') && $this->lecturer && $student->academic_advisor_id === $this->lecturer->id;
+    }
+
+    public function isKaprodiOf(Student $student): bool
+    {
+        return $this->hasRole('kaprodi') && $this->lecturer && $student->department?->currentLeader?->lecturer_id === $this->lecturer->id;
+    }
+
+    /**
+     * Gates page access: the student's academic advisor, the kaprodi of
+     * their department, or staff roles may view a student's KRS.
+     */
+    public function canAccessCourseRegistrationOf(Student $student): bool
+    {
+        if ($this->hasRole('dosen') || $this->hasRole('kaprodi')) {
+            return $this->isAdvisorOf($student) || $this->isKaprodiOf($student);
+        }
+
+        return true;
+    }
+
+    /**
+     * Only the student's academic advisor may approve/reject; the kaprodi
+     * signs but does not decide. Other staff roles retain override access.
+     */
+    public function canReviewCourseRegistrationOf(Student $student): bool
+    {
+        if ($this->hasRole('dosen')) {
+            return $this->isAdvisorOf($student);
+        }
+
+        if ($this->hasRole('kaprodi')) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * @return array<int, int>
+     */
+    public function ledDepartmentIds(): array
+    {
+        return $this->lecturer
+            ? $this->lecturer->leaderships()->whereNull('ended_at')->pluck('department_id')->all()
+            : [];
+    }
 }

app/Services/Admin/Finances/TuitionInvoiceService.php

@@ -33,7 +33,7 @@ public function paginated(
             ->select(['id', 'student_id', 'academic_term_id', 'amount_due', 'due_date'])
             ->withSum('payments as paid_total', 'amount_paid')
             ->withCount('payments')
-            ->with(['student.user.profile', 'student.department', 'academicTerm:id,name,semester,start_date,end_date'])
+            ->with(['student.user.profile', 'student.department', 'academicTerm:id,academic_year,semester,start_date,end_date'])
             ->when($status, fn ($q) => match ($status) {
                 'paid' => $q->havingRaw('COALESCE(paid_total, 0) >= amount_due'),
                 'partial' => $q->havingRaw('COALESCE(paid_total, 0) > 0 AND COALESCE(paid_total, 0) < amount_due'),

app/Services/Admin/Manage/ClassEnrollmentService.php

@@ -4,7 +4,6 @@
 
 use App\Models\ClassEnrollment;
 use App\Models\CourseClass;
-use App\Models\Student;
 use Illuminate\Database\Eloquent\Collection;
 
 class ClassEnrollmentService
@@ -17,25 +16,6 @@ public function forClass(CourseClass $courseClass): Collection
             ->get();
     }
 
-    public function availableStudents(CourseClass $courseClass): Collection
-    {
-        return Student::query()
-            ->where('department_id', $courseClass->course->department_id)
-            ->whereDoesntHave('enrollments', fn ($q) => $q->where('course_class_id', $courseClass->id))
-            ->with(['user.profile', 'department'])
-            ->get();
-    }
-
-    public function enrollMany(CourseClass $courseClass, array $studentIds): void
-    {
-        foreach ($studentIds as $studentId) {
-            $courseClass->enrollments()->firstOrCreate(
-                ['student_id' => $studentId],
-                ['enrolled_at' => now()],
-            );
-        }
-    }
-
     public function unenroll(ClassEnrollment $enrollment): bool
     {
         return $enrollment->delete();

app/Services/Admin/Manage/CourseClassService.php

@@ -5,6 +5,7 @@
 use App\Models\CourseClass;
 use Illuminate\Contracts\Pagination\LengthAwarePaginator;
 use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Support\Facades\DB;
 
 class CourseClassService
 {
@@ -18,19 +19,32 @@ public function getAllForSelect(): Collection
     public function paginated(int $perPage = 25, string $search = '', ?int $academicTermId = null, ?string $method = null): LengthAwarePaginator
     {
         return CourseClass::query()
-            ->select(['id', 'course_id', 'lecturer_id', 'academic_term_id', 'method'])
+            ->select(['course_classes.id', 'course_classes.course_id', 'course_classes.lecturer_id', 'course_classes.academic_term_id', 'course_classes.method'])
+            ->join('academic_terms', 'academic_terms.id', '=', 'course_classes.academic_term_id')
+            ->join('courses', 'courses.id', '=', 'course_classes.course_id')
             ->withCount('enrollments')
-            ->with(['course:id,code,name,department_id', 'lecturer.user.profile', 'academicTerm:id,name,semester,start_date,end_date'])
+            ->with(['course:id,code,name,department_id,semester_number', 'lecturer.user.profile', 'academicTerm:id,academic_year,semester,start_date,end_date'])
             ->when($search, fn ($q) => $q->whereHas('course', fn ($q) => $q->where('name', 'like', "%{$search}%")->orWhere('code', 'like', "%{$search}%")))
-            ->when($academicTermId, fn ($q) => $q->where('academic_term_id', $academicTermId))
-            ->when($method, fn ($q) => $q->where('method', $method))
-            ->latest()
+            ->when($academicTermId, fn ($q) => $q->where('course_classes.academic_term_id', $academicTermId))
+            ->when($method, fn ($q) => $q->where('course_classes.method', $method))
+            ->orderByDesc('academic_terms.start_date')
+            ->orderBy('courses.semester_number')
+            ->orderBy('courses.name')
             ->paginate($perPage);
     }
 
-    public function create(array $data): CourseClass
+    /**
+     * @param  array{course_ids: array<int, int>, lecturer_id: int, academic_term_id: int, method?: string|null}  $data
+     * @return Collection<int, CourseClass>
+     */
+    public function createMany(array $data): Collection
     {
-        return CourseClass::create($data);
+        return new Collection(array_map(fn (int $courseId) => CourseClass::create([
+            'course_id' => $courseId,
+            'lecturer_id' => $data['lecturer_id'],
+            'academic_term_id' => $data['academic_term_id'],
+            'method' => $data['method'] ?? null,
+        ]), $data['course_ids']));
     }
 
     public function update(CourseClass $courseClass, array $data): CourseClass
@@ -48,4 +62,47 @@ public function delete(CourseClass $courseClass): bool
     {
         return $courseClass->delete();
     }
+
+    /**
+     * Copies every course class from one academic term into another,
+     * skipping courses that already have a class in the target term.
+     *
+     * @return array{created: int, skipped: int}
+     */
+    public function duplicateFromTerm(int $sourceAcademicTermId, int $targetAcademicTermId): array
+    {
+        return DB::transaction(function () use ($sourceAcademicTermId, $targetAcademicTermId) {
+            $sourceClasses = CourseClass::query()
+                ->where('academic_term_id', $sourceAcademicTermId)
+                ->get(['course_id', 'lecturer_id', 'method']);
+
+            $existingCourseIds = CourseClass::query()
+                ->where('academic_term_id', $targetAcademicTermId)
+                ->pluck('course_id')
+                ->all();
+
+            $created = 0;
+            $skipped = 0;
+
+            foreach ($sourceClasses as $sourceClass) {
+                if (in_array($sourceClass->course_id, $existingCourseIds, true)) {
+                    $skipped++;
+
+                    continue;
+                }
+
+                CourseClass::create([
+                    'course_id' => $sourceClass->course_id,
+                    'lecturer_id' => $sourceClass->lecturer_id,
+                    'academic_term_id' => $targetAcademicTermId,
+                    'method' => $sourceClass->method,
+                ]);
+
+                $existingCourseIds[] = $sourceClass->course_id;
+                $created++;
+            }
+
+            return ['created' => $created, 'skipped' => $skipped];
+        });
+    }
 }

app/Services/Admin/Manage/CourseRegistrationService.php

@@ -3,14 +3,16 @@
 namespace App\Services\Admin\Manage;
 
 use App\Enums\RegistrationStatus;
+use App\Enums\StudentStatus;
 use App\Models\AcademicTerm;
 use App\Models\ClassEnrollment;
 use App\Models\Course;
 use App\Models\CourseClass;
 use App\Models\CourseRegistration;
 use App\Models\CourseRegistrationSubmission;
+use App\Models\Department;
 use App\Models\Student;
-use App\Models\TuitionInvoice;
+use App\Services\Admin\Master\AcademicTermService;
 use Illuminate\Contracts\Pagination\LengthAwarePaginator;
 use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Collection;
@@ -18,70 +20,231 @@
 
 class CourseRegistrationService
 {
-    public function paginated(int $perPage = 25, string $search = '', ?string $status = null, ?int $academicTermId = null): LengthAwarePaginator
+    public function __construct(
+        private readonly AcademicTermService $academicTermService,
+    ) {}
+
+    /**
+     * @return Collection<int, Department>
+     */
+    public function departmentSummary(): Collection
     {
-        return CourseRegistrationSubmission::query()
-            ->select(['id', 'student_id', 'academic_term_id', 'status', 'signed_at', 'rejection_reason', 'reviewed_by', 'reviewed_at'])
-            ->with([
-                'student.user.profile',
-                'student.department',
-                'academicTerm:id,name,semester,start_date,end_date',
-                'reviewer.profile',
-                'courseRegistrations.courseClass.course:id,code,name',
-                'logs' => fn ($q) => $q->latest(),
-                'logs.actor.profile',
-            ])
-            ->when($search, fn ($q) => $q->whereHas('student', fn ($q) => $q->where('student_number', 'like', "%{$search}%")
-                ->orWhereHas('user.profile', fn ($q) => $q->where('full_name', 'like', "%{$search}%"))))
-            ->when($status, fn ($q) => $q->where('status', $status))
-            ->when($academicTermId, fn ($q) => $q->where('academic_term_id', $academicTermId))
-            ->latest()
-            ->paginate($perPage);
+        return Department::query()
+            ->select('id', 'name')
+            ->orderBy('name')
+            ->get();
     }
 
     /**
-     * Admin-created registration: additively attach course classes to a
-     * student's submission for a term, without disturbing an existing
-     * submission's review status.
-     *
-     * @param  array{student_id: int, academic_term_id: int, course_class_ids: array<int, int>}  $data
+     * @param  array<int, int>|null  $ledDepartmentIds  Restricts results to a kaprodi's own department(s).
      */
-    public function create(array $data): CourseRegistrationSubmission
+    public function paginated(int $perPage = 25, string $search = '', ?int $departmentId = null, ?int $advisorLecturerId = null, ?array $ledDepartmentIds = null): LengthAwarePaginator
     {
-        return DB::transaction(function () use ($data) {
-            $submission = CourseRegistrationSubmission::firstOrCreate(
-                [
-                    'student_id' => $data['student_id'],
-                    'academic_term_id' => $data['academic_term_id'],
-                ],
-                [
-                    'status' => RegistrationStatus::Submitted,
-                    'signed_at' => now(),
-                ],
-            );
+        $paginator = Student::query()
+            ->select(['id', 'user_id', 'student_number', 'department_id'])
+            ->where('status', StudentStatus::Active)
+            ->when($ledDepartmentIds !== null, fn ($q) => $q->whereIn('department_id', $ledDepartmentIds))
+            ->when($departmentId, fn ($q) => $q->where('department_id', $departmentId))
+            ->when($advisorLecturerId, fn ($q) => $q->where('academic_advisor_id', $advisorLecturerId))
+            ->when($search, fn ($q) => $q->where('student_number', 'like', "%{$search}%")
+                ->orWhereHas('user.profile', fn ($q) => $q->where('full_name', 'like', "%{$search}%")))
+            ->with(['user.profile', 'department:id,name'])
+            ->orderBy('student_number')
+            ->paginate($perPage);
 
-            if ($submission->wasRecentlyCreated) {
-                $submission->logs()->create([
-                    'status' => RegistrationStatus::Submitted,
-                    'actor_id' => auth()->id(),
-                ]);
-            }
+        return $paginator->through(fn (Student $student) => [
+            'student_id' => $student->id,
+            'student' => $student,
+        ]);
+    }
 
-            foreach ($data['course_class_ids'] as $courseClassId) {
+    public function findOrCreateForStudent(Student $student, AcademicTerm $academicTerm, ?int $semesterNumber): CourseRegistrationSubmission
+    {
+        return CourseRegistrationSubmission::firstOrCreate(
+            [
+                'student_id' => $student->id,
+                'academic_term_id' => $academicTerm->id,
+                'semester_number' => $semesterNumber,
+            ],
+            [
+                'status' => RegistrationStatus::Submitted,
+                'signed_at' => now(),
+            ],
+        );
+    }
+
+    public function findOrCreateForSemester(Student $student, string $semester): CourseRegistrationSubmission
+    {
+        $semesterNumber = CourseRegistrationSubmission::parseSemesterKey($semester);
+        $activeTerm = $this->academicTermService->getActive();
+
+        abort_if($activeTerm === null, 422);
+
+        return $this->findOrCreateForStudent($student, $activeTerm, $semesterNumber);
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function buildSubmissionPayload(Student $student, AcademicTerm $activeTerm, ?int $semesterNumber, Collection $departmentCourses, Collection $allCourseClasses): array
+    {
+        $submission = $this->findOrCreateForStudent($student, $activeTerm, $semesterNumber);
+
+        $data = $this->withDetails($submission);
+        $payload = $data->toArray();
+
+        $registeredCourseClassIds = $data->courseRegistrations->pluck('course_class_id')->all();
+        $courseClassesByCourseId = $allCourseClasses->keyBy('course_id');
+
+        $payload['has_registrations'] = ! empty($registeredCourseClassIds);
+        $payload['course_registrations'] = $departmentCourses
+            ->filter(fn (Course $course) => $course->semester_number === $semesterNumber)
+            ->map(function (Course $course) use ($courseClassesByCourseId, $registeredCourseClassIds) {
+                $courseClass = $courseClassesByCourseId->get($course->id);
+
+                return [
+                    'id' => $courseClass?->id ?? -$course->id,
+                    'course' => $course,
+                    'course_class' => $courseClass ? ['id' => $courseClass->id] : null,
+                    'is_registered' => $courseClass !== null && in_array($courseClass->id, $registeredCourseClassIds, true),
+                ];
+            })
+            ->values();
+
+        return $payload;
+    }
+
+    /**
+     * The department's full course curriculum, independent of which classes
+     * have been opened for the current academic term.
+     *
+     * @return Collection<int, Course>
+     */
+    public function departmentCourses(int $departmentId): Collection
+    {
+        return Course::query()
+            ->where('department_id', $departmentId)
+            ->orderBy('semester_number')
+            ->orderBy('name')
+            ->get(['id', 'code', 'name', 'credits', 'semester_number']);
+    }
+
+    public function withDetails(CourseRegistrationSubmission $submission): CourseRegistrationSubmission
+    {
+        return $submission->load([
+            'student.user.profile',
+            'student.department.currentLeader.lecturer.user.profile',
+            'student.academicAdvisor.user.profile',
+            'academicTerm:id,academic_year,semester,start_date,end_date',
+            'reviewer.profile',
+            'courseRegistrations.courseClass.course',
+            'logs' => fn ($q) => $q->oldest(),
+            'logs.actor.profile',
+        ]);
+    }
+
+    /**
+     * @return Collection<int, CourseClass>
+     */
+    public function availableCourseClasses(int $departmentId, int $academicTermId): Collection
+    {
+        return CourseClass::query()
+            ->where('academic_term_id', $academicTermId)
+            ->whereHas('course', fn ($q) => $q->where('department_id', $departmentId))
+            ->with('course:id,code,name,credits,semester_number')
+            ->get();
+    }
+
+    /**
+     * @param  array<int, int>  $openSemesters
+     * @return array<int, int>
+     */
+    public function selectableCourseClassIds(int $departmentId, int $academicTermId, ?int $semesterNumber, array $openSemesters, ?int $studentCurrentSemester): array
+    {
+        if ($semesterNumber === null || $semesterNumber !== $studentCurrentSemester || ! in_array($semesterNumber, $openSemesters, true)) {
+            return [];
+        }
+
+        return CourseClass::query()
+            ->where('academic_term_id', $academicTermId)
+            ->whereHas('course', fn ($q) => $q->where('department_id', $departmentId)->where('semester_number', $semesterNumber))
+            ->pluck('id')
+            ->all();
+    }
+
+    /**
+     * @param  array<int, int>  $courseClassIds
+     */
+    public function saveRegistrations(
+        CourseRegistrationSubmission $submission,
+        array $courseClassIds,
+        int $academicTermId,
+        int $studentId,
+        ?UploadedFile $signature,
+    ): CourseRegistrationSubmission {
+        abort_if($submission->status === RegistrationStatus::Approved, 403);
+
+        return DB::transaction(function () use ($submission, $courseClassIds, $academicTermId, $studentId, $signature) {
+            $submission->courseRegistrations()->delete();
+
+            foreach ($courseClassIds as $courseClassId) {
                 CourseRegistration::create([
-                    'student_id' => $data['student_id'],
-                    'academic_term_id' => $data['academic_term_id'],
+                    'student_id' => $studentId,
+                    'academic_term_id' => $academicTermId,
                     'course_class_id' => $courseClassId,
                     'submission_id' => $submission->id,
                 ]);
             }
 
+            $submission->update([
+                'status' => RegistrationStatus::Submitted,
+                'rejection_reason' => null,
+                'signed_at' => now(),
+            ]);
+
+            if ($signature) {
+                $submission->addMedia($signature)->toMediaCollection('signature');
+            }
+
+            $submission->logs()->create([
+                'status' => RegistrationStatus::Submitted,
+                'actor_id' => auth()->id(),
+            ]);
+
             return $submission;
         });
     }
 
+    public function signAsKaprodi(CourseRegistrationSubmission $submission, UploadedFile $signature): CourseRegistrationSubmission
+    {
+        $this->assertSignable($submission);
+
+        $submission->addMedia($signature)->toMediaCollection('kaprodi_signature');
+
+        return $submission;
+    }
+
+    public function signAsAdvisor(CourseRegistrationSubmission $submission, UploadedFile $signature): CourseRegistrationSubmission
+    {
+        $this->assertSignable($submission);
+
+        $submission->addMedia($signature)->toMediaCollection('advisor_signature');
+
+        return $submission;
+    }
+
+    private function assertSignable(CourseRegistrationSubmission $submission): void
+    {
+        abort_unless($submission->status === RegistrationStatus::Submitted, 403);
+        abort_unless($submission->courseRegistrations()->exists(), 403);
+    }
+
     public function approve(CourseRegistrationSubmission $submission): CourseRegistrationSubmission
     {
+        abort_unless($submission->status === RegistrationStatus::Submitted, 403);
+        abort_if($submission->kaprodi_signature_url === null, 422, 'Ketua Program Studi belum menandatangani KRS ini.');
+        abort_if($submission->advisor_signature_url === null, 422, 'Silakan tanda tangani KRS ini terlebih dahulu.');
+
         return DB::transaction(function () use ($submission) {
             $submission->update([
                 'status' => RegistrationStatus::Approved,
@@ -113,6 +276,8 @@ public function approve(CourseRegistrationSubmission $submission): CourseRegistr
 
     public function reject(CourseRegistrationSubmission $submission, string $reason): CourseRegistrationSubmission
     {
+        abort_unless($submission->status === RegistrationStatus::Submitted, 403);
+
         return DB::transaction(function () use ($submission, $reason) {
             $submission->update([
                 'status' => RegistrationStatus::Rejected,
@@ -130,164 +295,4 @@ public function reject(CourseRegistrationSubmission $submission, string $reason)
             return $submission;
         });
     }
-
-    /**
-     * @return Collection<int, array{course: Course, course_class: ?CourseClass}>
-     */
-    public function availableCourseClasses(Student $student, AcademicTerm $term): Collection
-    {
-        $courses = Course::query()
-            ->where('department_id', $student->department_id)
-            ->where('semester_number', $student->current_semester)
-            ->orderBy('name')
-            ->get(['id', 'code', 'name', 'credits']);
-
-        $classes = CourseClass::query()
-            ->whereIn('course_id', $courses->pluck('id'))
-            ->where('academic_term_id', $term->id)
-            ->with('lecturer.user.profile')
-            ->get()
-            ->keyBy('course_id');
-
-        return $courses->map(fn (Course $course) => [
-            'course' => $course,
-            'course_class' => $classes->get($course->id),
-        ])->values();
-    }
-
-    /**
-     * @return array{has_invoice: bool, is_paid: bool, amount_due: ?float, paid_total: ?float}
-     */
-    public function paymentStatus(Student $student, AcademicTerm $term): array
-    {
-        $invoice = TuitionInvoice::query()
-            ->where('student_id', $student->id)
-            ->where('academic_term_id', $term->id)
-            ->withSum('payments as paid_total', 'amount_paid')
-            ->first();
-
-        if (! $invoice) {
-            return [
-                'has_invoice' => false,
-                'is_paid' => false,
-                'amount_due' => null,
-                'paid_total' => null,
-            ];
-        }
-
-        $paidTotal = (float) ($invoice->paid_total ?? 0);
-        $amountDue = (float) $invoice->amount_due;
-
-        return [
-            'has_invoice' => true,
-            'is_paid' => $paidTotal >= $amountDue,
-            'amount_due' => $amountDue,
-            'paid_total' => $paidTotal,
-        ];
-    }
-
-    public function currentSubmission(Student $student, AcademicTerm $term): ?CourseRegistrationSubmission
-    {
-        return CourseRegistrationSubmission::query()
-            ->where('student_id', $student->id)
-            ->where('academic_term_id', $term->id)
-            ->with([
-                'courseRegistrations.courseClass.course',
-                'courseRegistrations.courseClass.lecturer.user.profile',
-                'logs' => fn ($q) => $q->latest(),
-                'logs.actor.profile',
-            ])
-            ->first();
-    }
-
-    /**
-     * @return Collection<int, CourseRegistrationSubmission>
-     */
-    public function submissionsFor(Student $student): Collection
-    {
-        return CourseRegistrationSubmission::query()
-            ->where('student_id', $student->id)
-            ->withCount('courseRegistrations')
-            ->with('academicTerm:id,name,semester,start_date,end_date')
-            ->latest()
-            ->get();
-    }
-
-    public function withDetails(CourseRegistrationSubmission $submission): CourseRegistrationSubmission
-    {
-        return $submission->load([
-            'student.user.profile',
-            'student.department',
-            'academicTerm:id,name,semester,start_date,end_date',
-            'reviewer.profile',
-            'courseRegistrations.courseClass.course',
-            'courseRegistrations.courseClass.lecturer.user.profile',
-            'logs' => fn ($q) => $q->oldest(),
-            'logs.actor.profile',
-        ]);
-    }
-
-    public function canSubmit(?CourseRegistrationSubmission $submission): bool
-    {
-        return $submission === null || $submission->status === RegistrationStatus::Rejected;
-    }
-
-    /**
-     * @return array<int, int>
-     */
-    public function allowedCourseClassIds(Student $student, AcademicTerm $term): array
-    {
-        $courseIds = Course::query()
-            ->where('department_id', $student->department_id)
-            ->where('semester_number', $student->current_semester)
-            ->pluck('id');
-
-        return CourseClass::query()
-            ->whereIn('course_id', $courseIds)
-            ->where('academic_term_id', $term->id)
-            ->pluck('id')
-            ->all();
-    }
-
-    /**
-     * Student self-service sign-off: replaces the submission's course
-     * selection wholesale and attaches the captured signature.
-     *
-     * @param  array<int, int>  $courseClassIds
-     */
-    public function sign(Student $student, AcademicTerm $term, array $courseClassIds, UploadedFile $signatureFile): CourseRegistrationSubmission
-    {
-        return DB::transaction(function () use ($student, $term, $courseClassIds, $signatureFile) {
-            $submission = CourseRegistrationSubmission::updateOrCreate(
-                ['student_id' => $student->id, 'academic_term_id' => $term->id],
-                [
-                    'status' => RegistrationStatus::Submitted,
-                    'signed_at' => now(),
-                    'rejection_reason' => null,
-                    'reviewed_by' => null,
-                    'reviewed_at' => null,
-                ],
-            );
-
-            $submission->courseRegistrations()->delete();
-
-            foreach ($courseClassIds as $courseClassId) {
-                CourseRegistration::create([
-                    'student_id' => $student->id,
-                    'academic_term_id' => $term->id,
-                    'course_class_id' => $courseClassId,
-                    'submission_id' => $submission->id,
-                ]);
-            }
-
-            $submission->addMedia($signatureFile)->toMediaCollection('signature');
-
-            $submission->logs()->create([
-                'status' => RegistrationStatus::Submitted,
-                'actor_id' => $student->user_id,
-            ]);
-
-            return $submission;
-        });
-    }
 }

app/Services/Admin/Master/AcademicTermService.php

@@ -11,7 +11,7 @@ class AcademicTermService
 {
     public function getAllForSelect(): Collection
     {
-        return AcademicTerm::select(['id', 'name', 'semester', 'start_date', 'end_date', 'is_active'])->latest()->get();
+        return AcademicTerm::select(['id', 'academic_year', 'semester', 'start_date', 'end_date', 'is_active', 'open_semesters'])->latest()->get();
     }
 
     /**
@@ -27,26 +27,30 @@ public function getActive(): ?AcademicTerm
     public function paginated(int $perPage = 25, string $search = '', ?string $semester = null, ?bool $isActive = null): LengthAwarePaginator
     {
         return AcademicTerm::query()
-            ->select(['id', 'name', 'semester', 'start_date', 'end_date', 'is_active'])
-            ->when($search, fn ($q) => $q->where('name', 'like', "%{$search}%"))
-            ->when($semester, fn ($q) => $q->where('semester', $semester))
-            ->when($isActive !== null, fn ($q) => $q->where('is_active', $isActive))
+            ->select(['id', 'academic_year', 'semester', 'start_date', 'end_date', 'is_active', 'open_semesters'])
+            ->when($search, fn($q) => $q->where('academic_year', 'like', "%{$search}%"))
+            ->when($semester, fn($q) => $q->where('semester', $semester))
+            ->when($isActive !== null, fn($q) => $q->where('is_active', $isActive))
             ->latest()
             ->paginate($perPage);
     }
 
     public function create(array $data): AcademicTerm
     {
-        return AcademicTerm::create($data);
+        return AcademicTerm::create([
+            ...$data,
+            'open_semesters' => $this->normalizeOpenSemesters($data['open_semesters'] ?? []),
+        ]);
     }
 
     public function update(AcademicTerm $academicTerm, array $data): AcademicTerm
     {
-        $academicTerm->name = $data['name'];
+        $academicTerm->academic_year = $data['academic_year'];
         $academicTerm->semester = $data['semester'];
         $academicTerm->start_date = $data['start_date'];
         $academicTerm->end_date = $data['end_date'];
         $academicTerm->is_active = $data['is_active'];
+        $academicTerm->open_semesters = $this->normalizeOpenSemesters($data['open_semesters'] ?? []);
         $academicTerm->update();
 
         return $academicTerm;
@@ -67,4 +71,13 @@ public function updateActiveStatus(AcademicTerm $academicTerm, bool $isActive):
             $academicTerm->update(['is_active' => $isActive]);
         });
     }
+
+    /**
+     * @param  array<int, mixed>  $openSemesters
+     * @return array<int, int>
+     */
+    private function normalizeOpenSemesters(array $openSemesters): array
+    {
+        return array_values(array_unique(array_map('intval', $openSemesters)));
+    }
 }

app/Services/Admin/Master/CourseService.php

@@ -10,7 +10,14 @@ class CourseService
 {
     public function getAllForSelect(): Collection
     {
-        return Course::select(['id', 'code', 'name', 'department_id'])->get();
+        return Course::query()
+            ->select(['courses.id', 'courses.code', 'courses.name', 'courses.department_id', 'courses.semester_number'])
+            ->join('departments', 'departments.id', '=', 'courses.department_id')
+            ->with('department:id,name')
+            ->orderBy('departments.name')
+            ->orderBy('courses.semester_number')
+            ->orderBy('courses.name')
+            ->get();
     }
 
     public function getSemesterNumbers(): array
@@ -29,14 +36,17 @@ public function paginated(int $perPage = 25, string $search = '', ?int $departme
         $user = auth()->user();
 
         return Course::query()
-            ->select(['id', 'code', 'name', 'credits', 'department_id', 'semester_number'])
+            ->select(['courses.id', 'courses.code', 'courses.name', 'courses.credits', 'courses.department_id', 'courses.semester_number'])
+            ->join('departments', 'departments.id', '=', 'courses.department_id')
             ->with('department:id,name')
-            ->when($search, fn ($q) => $q->where('name', 'like', "%{$search}%")->orWhere('code', 'like', "%{$search}%"))
-            ->when($departmentId, fn ($q) => $q->where('department_id', $departmentId))
-            ->when($semesterNumber, fn ($q) => $q->where('semester_number', $semesterNumber))
-            ->when($user->hasRole('mahasiswa'), fn ($q) => $q->where('department_id', $user->student?->department_id))
-            ->when($user->hasRole('dosen'), fn ($q) => $q->whereIn('department_id', $user->lecturer?->departments()->pluck('departments.id') ?? []))
-            ->latest()
+            ->when($search, fn ($q) => $q->where('courses.name', 'like', "%{$search}%")->orWhere('courses.code', 'like', "%{$search}%"))
+            ->when($departmentId, fn ($q) => $q->where('courses.department_id', $departmentId))
+            ->when($semesterNumber, fn ($q) => $q->where('courses.semester_number', $semesterNumber))
+            ->when($user->hasRole('mahasiswa'), fn ($q) => $q->where('courses.department_id', $user->student?->department_id))
+            ->when($user->hasRole('dosen'), fn ($q) => $q->whereIn('courses.department_id', $user->lecturer?->departments()->pluck('departments.id') ?? []))
+            ->orderBy('departments.name')
+            ->orderBy('courses.semester_number')
+            ->orderBy('courses.name')
             ->paginate($perPage);
     }
 

app/Services/Admin/Master/DepartmentService.php

@@ -3,6 +3,8 @@
 namespace App\Services\Admin\Master;
 
 use App\Models\Department;
+use App\Models\DepartmentLeadership;
+use App\Models\Lecturer;
 use Illuminate\Contracts\Pagination\LengthAwarePaginator;
 use Illuminate\Database\Eloquent\Collection;
 
@@ -17,6 +19,7 @@ public function paginated(int $perPage = 25, string $search = ''): LengthAwarePa
     {
         return Department::query()
             ->select(['id', 'code', 'name', 'degree_level'])
+            ->with(['currentLeader.lecturer.user.profile'])
             ->when($search, fn ($q) => $q->where('name', 'like', "%{$search}%")->orWhere('code', 'like', "%{$search}%"))
             ->latest()
             ->paginate($perPage);
@@ -24,7 +27,15 @@ public function paginated(int $perPage = 25, string $search = ''): LengthAwarePa
 
     public function create(array $data): Department
     {
-        return Department::create($data);
+        $department = Department::create([
+            'code' => $data['code'],
+            'name' => $data['name'],
+            'degree_level' => $data['degree_level'] ?? null,
+        ]);
+
+        $this->syncLeadership($department, $data['lecturer_id'] ?? null, $data['leadership_started_at'] ?? null);
+
+        return $department;
     }
 
     public function update(Department $department, array $data): Department
@@ -34,9 +45,68 @@ public function update(Department $department, array $data): Department
         $department->degree_level = $data['degree_level'] ?? null;
         $department->update();
 
+        $this->syncLeadership($department, $data['lecturer_id'] ?? null, $data['leadership_started_at'] ?? null);
+
         return $department;
     }
 
+    private function syncLeadership(Department $department, ?int $lecturerId, ?string $startedAt): void
+    {
+        $currentLeader = DepartmentLeadership::query()
+            ->where('department_id', $department->id)
+            ->whereNull('ended_at')
+            ->first();
+
+        if (! $lecturerId) {
+            if ($currentLeader) {
+                $currentLeader->update(['ended_at' => now()]);
+                $this->revokeKaprodiRoleIfNoLongerLeading($currentLeader->lecturer_id);
+            }
+
+            return;
+        }
+
+        if ($currentLeader && $currentLeader->lecturer_id === $lecturerId) {
+            $currentLeader->update(['started_at' => $startedAt ?? $currentLeader->started_at]);
+            $this->grantKaprodiRole($lecturerId);
+
+            return;
+        }
+
+        if ($currentLeader) {
+            $currentLeader->update(['ended_at' => now()]);
+            $this->revokeKaprodiRoleIfNoLongerLeading($currentLeader->lecturer_id);
+        }
+
+        $department->leaderships()->create([
+            'lecturer_id' => $lecturerId,
+            'started_at' => $startedAt ?? now(),
+        ]);
+
+        $this->grantKaprodiRole($lecturerId);
+    }
+
+    private function grantKaprodiRole(int $lecturerId): void
+    {
+        $user = Lecturer::find($lecturerId)?->user;
+
+        if ($user && ! $user->hasRole('kaprodi')) {
+            $user->assignRole('kaprodi');
+        }
+    }
+
+    private function revokeKaprodiRoleIfNoLongerLeading(int $lecturerId): void
+    {
+        $stillLeadsAnyDepartment = DepartmentLeadership::query()
+            ->where('lecturer_id', $lecturerId)
+            ->whereNull('ended_at')
+            ->exists();
+
+        if (! $stillLeadsAnyDepartment) {
+            Lecturer::find($lecturerId)?->user?->removeRole('kaprodi');
+        }
+    }
+
     public function delete(Department $department): bool
     {
         return $department->delete();

app/Support/PermissionCatalog.php

@@ -23,7 +23,7 @@ class PermissionCatalog
     public const MANAGE = [
         'view-course-classes', 'create-course-classes', 'update-course-classes', 'delete-course-classes',
         'view-course-class-enrollments', 'create-course-class-enrollments', 'delete-course-class-enrollments',
-        'view-course-registrations', 'create-course-registrations', 'approve-course-registrations', 'reject-course-registrations',
+        'view-course-registrations', 'approve-course-registrations', 'reject-course-registrations',
         'view-announcements', 'create-announcements', 'update-announcements', 'delete-announcements',
     ];
 

database/migrations/2026_08_03_000003_create_academic_terms_table.php

@@ -11,11 +11,12 @@ public function up(): void
     {
         Schema::create('academic_terms', function (Blueprint $table) {
             $table->id();
-            $table->string('name', 20);
+            $table->string('academic_year', 20);
             $table->enum('semester', Semester::values());
             $table->date('start_date');
             $table->date('end_date');
             $table->boolean('is_active')->default(false);
+            $table->json('open_semesters')->nullable();
             $table->timestamps();
         });
     }

database/migrations/2026_08_24_235959_create_course_registration_submissions_table.php

@@ -13,6 +13,7 @@ public function up(): void
             $table->id();
             $table->foreignId('student_id')->constrained()->cascadeOnDelete();
             $table->foreignId('academic_term_id')->constrained()->cascadeOnDelete();
+            $table->integer('semester_number')->nullable();
             $table->enum('status', RegistrationStatus::values())->default(RegistrationStatus::Submitted->value);
             $table->timestamp('signed_at');
             $table->text('rejection_reason')->nullable();
@@ -20,7 +21,7 @@ public function up(): void
             $table->timestamp('reviewed_at')->nullable();
             $table->timestamps();
 
-            $table->unique(['student_id', 'academic_term_id'], 'course_reg_submissions_student_term_unique');
+            $table->unique(['student_id', 'academic_term_id', 'semester_number'], 'course_reg_submissions_student_term_semester_unique');
         });
     }
 

database/seeders/AcademicTermSeeder.php

@@ -12,7 +12,7 @@ public function run(): void
     {
         AcademicTerm::insert([
             [
-                'name' => '2026/2027',
+                'academic_year' => '2026/2027',
                 'semester' => Semester::odd->value,
                 'start_date' => '2026-08-01',
                 'end_date' => '2027-01-15',
@@ -21,7 +21,7 @@ public function run(): void
                 'updated_at' => now(),
             ],
             [
-                'name' => '2026/2027',
+                'academic_year' => '2026/2027',
                 'semester' => Semester::even->value,
                 'start_date' => '2027-02-01',
                 'end_date' => '2027-07-15',

database/seeders/CourseSeeder.php

@@ -143,6 +143,8 @@ public function run(): void
             ['code' => 'MBT707', 'name' => 'KKN Tematik 1', 'credits' => 4, 'department_id' => 2, 'semester_number' => 7],
             ['code' => 'TIU709', 'name' => 'Skripsi I', 'credits' => 2, 'department_id' => 2, 'semester_number' => 7],
 
+            ['code' => 'TIU810', 'name' => 'Skripsi II', 'credits' => 4, 'department_id' => 2, 'semester_number' => 8],
+
             // Bisnis Digital (docs/reference/bd.png, bd-2.png) — semester 1 s.d. 8
             ['code' => 'BDU101', 'name' => 'Ilmu Alamiah, Sosial, dan Budaya Dasar', 'credits' => 2, 'department_id' => 3, 'semester_number' => 1],
             ['code' => 'BDU102', 'name' => 'Pendidikan Anti Korupsi', 'credits' => 2, 'department_id' => 3, 'semester_number' => 1],

database/seeders/DatabaseSeeder.php

@@ -11,27 +11,35 @@ class DatabaseSeeder extends Seeder
 
     public function run(): void
     {
-        $this->call([
+        $seeders = [
             RolePermissionSeeder::class,
             DepartmentSeeder::class,
             AcademicTermSeeder::class,
             UserSeeder::class,
-            DepartmentLeadershipSeeder::class,
-            CourseSeeder::class,
-            CourseClassSeeder::class,
-            ClassEnrollmentSeeder::class,
-            CourseRegistrationSeeder::class,
-            MaterialSeeder::class,
-            AssignmentSeeder::class,
-            SubmissionSeeder::class,
-            ScheduleSeeder::class,
-            AttendanceSeeder::class,
-            TuitionInvoiceSeeder::class,
-            TuitionPaymentSeeder::class,
-            AnnouncementSeeder::class,
-            LetterRequestSeeder::class,
-            AcademicAdvisingLogSeeder::class,
-            NotificationSeeder::class,
-        ]);
+        ];
+
+        if (app()->environment('local')) {
+            $seeders = [
+                ...$seeders,
+                DepartmentLeadershipSeeder::class,
+                CourseSeeder::class,
+                CourseClassSeeder::class,
+                ClassEnrollmentSeeder::class,
+                CourseRegistrationSeeder::class,
+                MaterialSeeder::class,
+                AssignmentSeeder::class,
+                SubmissionSeeder::class,
+                ScheduleSeeder::class,
+                AttendanceSeeder::class,
+                TuitionInvoiceSeeder::class,
+                TuitionPaymentSeeder::class,
+                AnnouncementSeeder::class,
+                LetterRequestSeeder::class,
+                AcademicAdvisingLogSeeder::class,
+                NotificationSeeder::class,
+            ];
+        }
+
+        $this->call($seeders);
     }
 }

database/seeders/RolePermissionSeeder.php

@@ -41,6 +41,7 @@ public function run(): void
                 'view-dashboard',
                 'view-academic-terms',
                 'view-courses',
+                'view-course-registrations',
                 'view-letter-requests',
                 'create-letter-requests',
                 'update-letter-requests',
@@ -52,6 +53,9 @@ public function run(): void
                 'view-courses',
                 'view-academic-advising-logs',
                 'view-students',
+                'view-course-registrations',
+                'approve-course-registrations',
+                'reject-course-registrations',
                 ...$feedbackSelfService,
             ],
             'staff-admin' => [

database/seeders/UserSeeder.php

@@ -2,6 +2,7 @@
 
 namespace Database\Seeders;
 
+use App\Enums\Gender;
 use App\Enums\Semester;
 use App\Enums\StudentStatus;
 use App\Models\AcademicTerm;
@@ -20,86 +21,28 @@ public function run(): void
         $users = [
             [
                 'username' => 'pangestu',
-                'email' => 'pangestu@student.itmpwk.ac.id',
-                'roles' => ['mahasiswa', 'developer'],
+                'email' => 'project.pangestuyoga@gmail.com',
+                'roles' => ['developer'],
                 'profile' => [
                     'full_name' => 'Yoga Pangestu',
                     'phone_number' => '082121495806',
-                    'address' => 'Jl. Merdeka No. 1, Purwakarta',
-                    'gender' => 'male',
+                    'gender' => Gender::Male,
                     'birth_place' => 'Subang',
                     'birth_date' => '2005-03-13',
-                ],
-                'student' => [
-                    'student_number' => '23010001',
-                    'department_id' => 1,
-                    'enrollment_year' => 2023,
-                    'current_semester' => 5,
-                    'academic_advisor_id' => null,
-                    'status' => StudentStatus::Active,
+                    'address' => 'Jl. Raya Cijambe No. 123, Subang, Jawa Barat',
                 ],
             ],
             [
-                'username' => 'doni',
-                'email' => 'doni@student.itmpwk.ac.id',
-                'roles' => ['mahasiswa'],
+                'username' => 'administrator',
+                'email' => 'administrator@gmail.com',
+                'roles' => ['staff-admin'],
                 'profile' => [
-                    'full_name' => 'Doni Setiawan Ramadhan',
-                    'phone_number' => '085793462823',
-                    'address' => 'Jl. Merdeka No. 1, Purwakarta',
-                    'gender' => 'male',
+                    'full_name' => 'Administrator',
+                    'phone_number' => '082121212121',
+                    'gender' => Gender::Male,
                     'birth_place' => 'Purwakarta',
-                    'birth_date' => '2004-10-30',
-                ],
-                'student' => [
-                    'student_number' => '23020002',
-                    'department_id' => 1,
-                    'enrollment_year' => 2023,
-                    'current_semester' => 5,
-                    'academic_advisor_id' => null,
-                    'status' => StudentStatus::Active,
-                ],
-            ],
-            [
-                'username' => 'asep',
-                'email' => 'asep@student.itmpwk.ac.id',
-                'roles' => ['mahasiswa'],
-                'profile' => [
-                    'full_name' => 'Asep Saepudin',
-                    'phone_number' => '081546505033',
+                    'birth_date' => '2000-01-01',
                     'address' => 'Jl. Merdeka No. 1, Purwakarta',
-                    'gender' => 'male',
-                    'birth_place' => 'Purwakarta',
-                    'birth_date' => '2005-09-24',
-                ],
-                'student' => [
-                    'student_number' => '24010003',
-                    'department_id' => 1,
-                    'enrollment_year' => 2024,
-                    'current_semester' => 3,
-                    'academic_advisor_id' => null,
-                    'status' => StudentStatus::Active,
-                ],
-            ],
-            [
-                'username' => 'komala',
-                'email' => 'komala@student.itmpwk.ac.id',
-                'roles' => ['mahasiswa'],
-                'profile' => [
-                    'full_name' => 'Komala Dewi',
-                    'phone_number' => '085819894938',
-                    'address' => 'Jl. Merdeka No. 1, Purwakarta',
-                    'gender' => 'female',
-                    'birth_place' => 'Purwakarta',
-                    'birth_date' => '2005-05-04',
-                ],
-                'student' => [
-                    'student_number' => '24020004',
-                    'department_id' => 1,
-                    'enrollment_year' => 2024,
-                    'current_semester' => 3,
-                    'academic_advisor_id' => null,
-                    'status' => StudentStatus::Active,
                 ],
             ],
         ];
@@ -135,9 +78,11 @@ public function run(): void
             }
         }
 
-        $this->seedRandomLecturers();
-        $this->seedRandomStudents();
-        $this->seedOtherStaff();
+        if (app()->environment('local')) {
+            $this->seedRandomLecturers();
+            $this->seedRandomStudents();
+            $this->seedOtherStaff();
+        }
     }
 
     /**
@@ -193,7 +138,7 @@ private function seedRandomStudents(): void
         $departments = Department::all();
 
         foreach (AcademicTerm::all() as $term) {
-            [$startYear, $endYear] = explode('/', $term->name);
+            [$startYear, $endYear] = explode('/', $term->academic_year);
             $enrollmentYear = $term->semester === Semester::even ? (int) $endYear : (int) $startYear;
 
             foreach ($departments as $department) {

resources/js/components/app-sidebar.tsx

@@ -54,16 +54,11 @@ import { index as letterRequestsRoute } from '@/routes/admin/services/letter-req
 import { index as administratorsRoute } from '@/routes/admin/users/administrators';
 import { index as lecturersRoute } from '@/routes/admin/users/lecturers';
 import { index as studentsRoute } from '@/routes/admin/users/students';
-import { index as studentCourseRegistrationsRoute } from '@/routes/student/course-registrations';
 import type { Auth } from '@/types/auth';
 
-const STAFF_ROLES = ['developer', 'staff-admin', 'staff-keuangan', 'kaprodi'];
-
 function buildNavMain({
-    isMahasiswa,
     permissions,
 }: {
-    isMahasiswa: boolean;
     permissions: string[];
 }): (NavGroup | NavItem)[] {
     const can = (permission: string) => permissions.includes(permission);
@@ -117,17 +112,6 @@ function buildNavMain({
     ];
 
     const kelolaItems: NavItem[] = [
-        ...(isMahasiswa || can('view-course-registrations')
-            ? [
-                  {
-                      name: 'Registrasi KRS',
-                      url: isMahasiswa
-                          ? studentCourseRegistrationsRoute.url()
-                          : courseRegistrationsRoute.url(),
-                      icon: FileCheck2,
-                  },
-              ]
-            : []),
         ...(can('view-course-classes')
             ? [
                   {
@@ -137,6 +121,15 @@ function buildNavMain({
                   },
               ]
             : []),
+        ...(can('view-course-registrations')
+            ? [
+                  {
+                      name: 'Registrasi KRS',
+                      url: courseRegistrationsRoute.url(),
+                      icon: FileCheck2,
+                  },
+              ]
+            : []),
         ...(can('view-announcements')
             ? [
                   {
@@ -289,14 +282,8 @@ function buildNavSecondary(
 export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
     const { name, auth, pendingFeedbackCount } = usePage<{ auth: Auth }>()
         .props;
-    const roleNames = auth?.user?.roles?.map((role) => role.name) ?? [];
-    const isStaff = roleNames.some((role) => STAFF_ROLES.includes(role));
-    const isMahasiswa = !isStaff && roleNames.includes('mahasiswa');
     const permissions = auth?.permissions ?? [];
-    const navMain = buildNavMain({
-        isMahasiswa,
-        permissions,
-    });
+    const navMain = buildNavMain({ permissions });
 
     return (
         <Sidebar collapsible="icon" {...props}>

resources/js/components/data-table.tsx

@@ -65,6 +65,7 @@ interface DataTableProps<TData, TValue> {
     toolbar?: React.ReactNode;
     renderSubRow?: (row: Row<TData>, searchValue?: string) => React.ReactNode;
     defaultExpanded?: boolean;
+    groupBy?: (item: TData) => string;
     pagination?: PaginationState;
     onPageChange?: (page: number) => void;
     onPerPageChange?: (perPage: number) => void;
@@ -156,6 +157,7 @@ export function DataTable<TData, TValue>({
     toolbar,
     renderSubRow,
     defaultExpanded = false,
+    groupBy,
     pagination,
     onPageChange,
     onPerPageChange,
@@ -404,58 +406,96 @@ export function DataTable<TData, TValue>({
                                         </SortableContext>
                                     </DndContext>
                                 ) : (
-                                    table.getRowModel().rows.map((row) => (
-                                        <React.Fragment key={row.id}>
-                                            <TableRow
-                                                data-state={
-                                                    row.getIsSelected() &&
-                                                    'selected'
-                                                }
-                                            >
-                                                {row
-                                                    .getVisibleCells()
-                                                    .map((cell) => (
-                                                        <TableCell
-                                                            key={cell.id}
-                                                            className={
-                                                                (
-                                                                    cell.column
-                                                                        .columnDef
-                                                                        .meta as {
-                                                                        className?: string;
+                                    (() => {
+                                        let previousGroup: string | null =
+                                            null;
+
+                                        return table
+                                            .getRowModel()
+                                            .rows.map((row) => {
+                                                const group = groupBy
+                                                    ? groupBy(row.original)
+                                                    : null;
+                                                const showGroupHeader =
+                                                    groupBy &&
+                                                    group !== previousGroup;
+                                                previousGroup = group;
+
+                                                return (
+                                                    <React.Fragment
+                                                        key={row.id}
+                                                    >
+                                                        {showGroupHeader && (
+                                                            <TableRow className="bg-muted/50 hover:bg-muted/50">
+                                                                <TableCell
+                                                                    colSpan={
+                                                                        visibleColumns.length
                                                                     }
-                                                                )?.className
+                                                                    className="py-2 text-sm font-semibold"
+                                                                >
+                                                                    {group}
+                                                                </TableCell>
+                                                            </TableRow>
+                                                        )}
+                                                        <TableRow
+                                                            data-state={
+                                                                row.getIsSelected() &&
+                                                                'selected'
                                                             }
                                                         >
-                                                            {flexRender(
-                                                                cell.column
-                                                                    .columnDef
-                                                                    .cell,
-                                                                cell.getContext(),
-                                                            )}
-                                                        </TableCell>
-                                                    ))}
-                                            </TableRow>
-                                            {renderSubRow &&
-                                                row.getIsExpanded() && (
-                                                    <TableRow>
-                                                        <TableCell
-                                                            colSpan={
-                                                                visibleColumns.length
-                                                            }
-                                                            className="bg-muted/50 p-0"
-                                                        >
-                                                            <div className="p-4">
-                                                                {renderSubRow(
-                                                                    row,
-                                                                    localSearch,
+                                                            {row
+                                                                .getVisibleCells()
+                                                                .map(
+                                                                    (cell) => (
+                                                                        <TableCell
+                                                                            key={
+                                                                                cell.id
+                                                                            }
+                                                                            className={
+                                                                                (
+                                                                                    cell
+                                                                                        .column
+                                                                                        .columnDef
+                                                                                        .meta as {
+                                                                                        className?: string;
+                                                                                    }
+                                                                                )
+                                                                                    ?.className
+                                                                            }
+                                                                        >
+                                                                            {flexRender(
+                                                                                cell
+                                                                                    .column
+                                                                                    .columnDef
+                                                                                    .cell,
+                                                                                cell.getContext(),
+                                                                            )}
+                                                                        </TableCell>
+                                                                    ),
                                                                 )}
-                                                            </div>
-                                                        </TableCell>
-                                                    </TableRow>
-                                                )}
-                                        </React.Fragment>
-                                    ))
+                                                        </TableRow>
+                                                        {renderSubRow &&
+                                                            row.getIsExpanded() && (
+                                                                <TableRow>
+                                                                    <TableCell
+                                                                        colSpan={
+                                                                            visibleColumns.length
+                                                                        }
+                                                                        className="bg-muted/50 p-0"
+                                                                    >
+                                                                        <div className="p-4">
+                                                                            {renderSubRow(
+                                                                                row,
+                                                                                localSearch,
+                                                                            )}
+                                                                        </div>
+                                                                    </TableCell>
+                                                                </TableRow>
+                                                            )}
+                                                    </React.Fragment>
+                                                );
+                                            });
+                                    })()
                                 )
                             ) : (
                                 <TableRow>

resources/js/components/date-picker.tsx

@@ -19,13 +19,17 @@ type DatePickerProps = {
     maxDate?: Date;
 };
 
+const defaultMaxDate = new Date(
+    new Date().setFullYear(new Date().getFullYear() + 5),
+);
+
 export function DatePicker({
     value,
     onChange,
     placeholder = 'Pilih tanggal',
     className,
     disabled,
-    maxDate,
+    maxDate = defaultMaxDate,
 }: DatePickerProps) {
     return (
         <Popover>
@@ -50,6 +54,7 @@ export function DatePicker({
                     defaultMonth={value ?? undefined}
                     captionLayout="dropdown"
                     onSelect={onChange}
+                    endMonth={maxDate}
                     disabled={maxDate ? { after: maxDate } : undefined}
                 />
             </PopoverContent>

resources/js/components/form-dialog.tsx

@@ -62,7 +62,7 @@ export function FormDialog({
                             <DialogHeader className="shrink-0">
                                 <DialogTitle>{title}</DialogTitle>
                             </DialogHeader>
-                            <div className="grid flex-1 gap-4 overflow-x-hidden overflow-y-auto py-4">
+                            <div className="grid flex-1 gap-4 overflow-x-hidden overflow-y-auto px-1 py-4">
                                 {typeof children === 'function'
                                     ? children({ errors, processing })
                                     : children}

resources/js/components/signature-pad.tsx

@@ -1,5 +1,5 @@
 import { Eraser } from 'lucide-react';
-import { useRef } from 'react';
+import { useEffect, useRef } from 'react';
 import SignatureCanvasImport from 'react-signature-canvas';
 import InputError from '@/components/input-error';
 import { Button } from '@/components/ui/button';
@@ -18,12 +18,49 @@ const SignatureCanvas = ((
 type SignaturePadProps = {
     name: string;
     error?: string;
+    /** Renders a small, chrome-free pad sized to sit inline with other
+     * compact signature placeholders (e.g. a document's signature row). */
+    compact?: boolean;
+    /** Fires with the captured signature file whenever the drawing changes,
+     * for callers that submit it outside a native <form> (e.g. via router). */
+    onCapture?: (file: File | null) => void;
 };
 
-export function SignaturePad({ name, error }: SignaturePadProps) {
+export function SignaturePad({
+    name,
+    error,
+    compact,
+    onCapture,
+}: SignaturePadProps) {
     const padRef = useRef<SignatureCanvasImport>(null);
     const fileInputRef = useRef<HTMLInputElement>(null);
 
+    // The canvas element's drawing-surface resolution (width/height
+    // attributes) does not automatically follow its CSS-rendered size, so
+    // without this, pointer coordinates drift from where ink is drawn —
+    // worse on HiDPI screens. Size the backing buffer to match on mount and
+    // whenever the layout might change.
+    useEffect(() => {
+        function resizeCanvas() {
+            const canvas = padRef.current?.getCanvas();
+
+            if (!canvas) {
+                return;
+            }
+
+            const ratio = Math.max(window.devicePixelRatio || 1, 1);
+            canvas.width = canvas.offsetWidth * ratio;
+            canvas.height = canvas.offsetHeight * ratio;
+            canvas.getContext('2d')?.scale(ratio, ratio);
+            padRef.current?.clear();
+        }
+
+        resizeCanvas();
+        window.addEventListener('resize', resizeCanvas);
+
+        return () => window.removeEventListener('resize', resizeCanvas);
+    }, []);
+
     function syncFileInput() {
         const pad = padRef.current;
         const input = fileInputRef.current;
@@ -43,6 +80,7 @@ export function SignaturePad({ name, error }: SignaturePadProps) {
             const dataTransfer = new DataTransfer();
             dataTransfer.items.add(file);
             input.files = dataTransfer.files;
+            onCapture?.(file);
         }, 'image/png');
     }
 
@@ -52,6 +90,41 @@ export function SignaturePad({ name, error }: SignaturePadProps) {
         if (fileInputRef.current) {
             fileInputRef.current.value = '';
         }
+
+        onCapture?.(null);
+    }
+
+    if (compact) {
+        return (
+            <div className="grid gap-1">
+                <div className="relative h-28 w-48 overflow-hidden rounded border bg-white">
+                    <SignatureCanvas
+                        ref={padRef}
+                        penColor="#0f172a"
+                        canvasProps={{
+                            className:
+                                'h-28 w-48 cursor-crosshair touch-none',
+                        }}
+                        onEnd={syncFileInput}
+                    />
+                    <button
+                        type="button"
+                        onClick={handleClear}
+                        aria-label="Hapus tanda tangan"
+                        className="absolute top-0.5 right-0.5 rounded bg-white/80 p-0.5 text-slate-500 hover:text-slate-900"
+                    >
+                        <Eraser className="h-3 w-3" />
+                    </button>
+                </div>
+                <input
+                    ref={fileInputRef}
+                    type="file"
+                    name={name}
+                    className="hidden"
+                />
+                <InputError message={error} />
+            </div>
+        );
     }
 
     return (

resources/js/components/ui/tabs.tsx

@@ -1,5 +1,3 @@
-"use client"
-
 import * as React from "react"
 import { cva, type VariantProps } from "class-variance-authority"
 import { Tabs as TabsPrimitive } from "radix-ui"

resources/js/pages/admin/finances/tuition-invoices/columns.tsx

@@ -51,7 +51,7 @@ export function createTuitionInvoiceColumns(
             },
         },
         {
-            accessorKey: 'academic_term.name',
+            accessorKey: 'academic_term.academic_year',
             header: () => <span>Periode</span>,
             cell: ({ row }) => {
                 const term = row.original.academic_term;

resources/js/pages/admin/finances/tuition-invoices/index.tsx

@@ -69,7 +69,11 @@ import {
 } from '@/types/tuition-payment';
 import { createTuitionInvoiceColumns } from './columns';
 
-type AcademicTermOption = { id: number; name: string; semester: string };
+type AcademicTermOption = {
+    id: number;
+    academic_year: string;
+    semester: string;
+};
 
 type InvoiceSummary = {
     unpaid_students: number;

resources/js/pages/admin/manage/course-classes/columns.tsx

@@ -3,7 +3,6 @@ import { Pencil, Trash2, Users } from 'lucide-react';
 import { RowActions } from '@/components/row-actions';
 import { Badge } from '@/components/ui/badge';
 import { index as enrollmentsIndex } from '@/routes/admin/manage/course-classes/enrollments';
-import { formatAcademicTermLabel } from '@/types/academic-term';
 import { ClassMethodLabels } from '@/types/course-class';
 import type { CourseClass } from '@/types/course-class';
 
@@ -44,15 +43,6 @@ export function createCourseClassColumns(
             cell: ({ row }) =>
                 row.original.lecturer?.user?.profile?.full_name ?? '-',
         },
-        {
-            accessorKey: 'academic_term.name',
-            header: () => <span>Periode</span>,
-            cell: ({ row }) => {
-                const term = row.original.academic_term;
-
-                return term ? formatAcademicTermLabel(term) : '-';
-            },
-        },
         {
             accessorKey: 'method',
             header: () => <span className="block text-center">Metode</span>,

resources/js/pages/admin/manage/course-classes/enrollments.tsx

@@ -1,47 +1,33 @@
 import { Head, Link, router } from '@inertiajs/react';
 import type { ColumnDef } from '@tanstack/react-table';
 import { format } from 'date-fns';
-import { ArrowLeft, Trash2, UserPlus } from 'lucide-react';
+import { ArrowLeft, Trash2 } from 'lucide-react';
 import { useState } from 'react';
 import { DataTable } from '@/components/data-table';
 import { DeleteConfirmDialog } from '@/components/delete-confirm-dialog';
-import { FormDialog } from '@/components/form-dialog';
-import InputError from '@/components/input-error';
 import { PageHeader } from '@/components/page-header';
 import { RowActions } from '@/components/row-actions';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { Checkbox } from '@/components/ui/checkbox';
-import { Label } from '@/components/ui/label';
 import { usePermissions } from '@/hooks/use-permissions';
 import { index as courseClassIndex } from '@/routes/admin/manage/course-classes';
-import {
-    destroy,
-    store,
-} from '@/routes/admin/manage/course-classes/enrollments';
+import { destroy } from '@/routes/admin/manage/course-classes/enrollments';
 import { formatAcademicTermLabel } from '@/types/academic-term';
-import type {
-    ClassEnrollment,
-    EnrollmentStudent,
-} from '@/types/class-enrollment';
+import type { ClassEnrollment } from '@/types/class-enrollment';
 import type { CourseClass } from '@/types/course-class';
 import { ClassMethodLabels } from '@/types/course-class';
 
 type Props = {
     courseClass: CourseClass;
     enrollments: ClassEnrollment[];
-    availableStudents: EnrollmentStudent[];
 };
 
 export default function ClassEnrollmentIndex({
     courseClass,
     enrollments,
-    availableStudents,
 }: Props) {
-    const [createOpen, setCreateOpen] = useState(false);
     const [deleting, setDeleting] = useState<ClassEnrollment | null>(null);
     const { hasPermission } = usePermissions();
-    const canCreate = hasPermission('create-course-class-enrollments');
     const canDelete = hasPermission('delete-course-class-enrollments');
 
     function handleDelete() {
@@ -158,25 +144,10 @@ export default function ClassEnrollmentIndex({
                     </CardContent>
                 </Card>
 
-                <div className="flex items-center justify-between">
-                    <h2 className="text-lg font-semibold">Daftar Mahasiswa</h2>
-                    {canCreate && (
-                        <Button onClick={() => setCreateOpen(true)}>
-                            <UserPlus className="h-4 w-4" />
-                            Tambah Mahasiswa
-                        </Button>
-                    )}
-                </div>
+                <h2 className="text-lg font-semibold">Daftar Mahasiswa</h2>
 
                 <DataTable columns={columns} data={enrollments} />
 
-                <EnrollForm
-                    open={createOpen}
-                    onOpenChange={setCreateOpen}
-                    courseClassId={courseClass.id}
-                    availableStudents={availableStudents}
-                />
-
                 <DeleteConfirmDialog
                     target={deleting}
                     onOpenChange={(open) => {
@@ -194,123 +165,3 @@ export default function ClassEnrollmentIndex({
         </>
     );
 }
-
-function EnrollForm({
-    open,
-    onOpenChange,
-    courseClassId,
-    availableStudents,
-}: {
-    open: boolean;
-    onOpenChange: (open: boolean) => void;
-    courseClassId: number;
-    availableStudents: EnrollmentStudent[];
-}) {
-    const [selectedIds, setSelectedIds] = useState<number[]>([]);
-
-    const allSelected =
-        availableStudents.length > 0 &&
-        selectedIds.length === availableStudents.length;
-
-    function toggleAll() {
-        setSelectedIds(
-            allSelected ? [] : availableStudents.map((student) => student.id),
-        );
-    }
-
-    function toggleOne(id: number) {
-        setSelectedIds((prev) =>
-            prev.includes(id)
-                ? prev.filter((selectedId) => selectedId !== id)
-                : [...prev, id],
-        );
-    }
-
-    return (
-        <FormDialog
-            open={open}
-            onOpenChange={onOpenChange}
-            title="Tambah Mahasiswa"
-            action={store(courseClassId)}
-            resetOnSuccess
-            submitDisabled={selectedIds.length === 0}
-            submitLabel={
-                selectedIds.length > 0
-                    ? `Tambahkan (${selectedIds.length})`
-                    : 'Tambahkan'
-            }
-            onSuccess={() => {
-                onOpenChange(false);
-                setSelectedIds([]);
-            }}
-        >
-            {({ errors }) => (
-                <div className="grid gap-4">
-                    <div className="grid gap-2">
-                        <div className="flex items-center justify-between">
-                            <Label>
-                                Mahasiswa{' '}
-                                <span className="text-destructive">*</span>
-                            </Label>
-                            {availableStudents.length > 0 && (
-                                <div className="flex items-center gap-2">
-                                    <Checkbox
-                                        id="select-all-students"
-                                        checked={allSelected}
-                                        onCheckedChange={toggleAll}
-                                    />
-                                    <Label
-                                        htmlFor="select-all-students"
-                                        className="text-sm font-normal"
-                                    >
-                                        Pilih Semua
-                                    </Label>
-                                </div>
-                            )}
-                        </div>
-                        {selectedIds.map((id) => (
-                            <input
-                                key={id}
-                                type="hidden"
-                                name="student_ids[]"
-                                value={id}
-                            />
-                        ))}
-                        <div className="max-h-64 overflow-y-auto rounded-md border">
-                            {availableStudents.length === 0 ? (
-                                <p className="p-4 text-sm text-muted-foreground">
-                                    Tidak ada mahasiswa dari jurusan yang sama
-                                    untuk didaftarkan.
-                                </p>
-                            ) : (
-                                availableStudents.map((student) => (
-                                    <label
-                                        key={student.id}
-                                        htmlFor={`student-${student.id}`}
-                                        className="flex items-center gap-2 border-b px-3 py-2 last:border-b-0 hover:bg-muted/50"
-                                    >
-                                        <Checkbox
-                                            id={`student-${student.id}`}
-                                            checked={selectedIds.includes(
-                                                student.id,
-                                            )}
-                                            onCheckedChange={() =>
-                                                toggleOne(student.id)
-                                            }
-                                        />
-                                        <span className="text-sm">
-                                            {student.user?.profile?.full_name ??
-                                                'N/A'}{' '}
-                                            - {student.student_number}
-                                        </span>
-                                    </label>
-                                ))
-                            )}
-                        </div>
-                        <InputError message={errors.student_ids} />
-                    </div>
-                </div>
-            )}
-        </FormDialog>
-    );
-}

resources/js/pages/admin/manage/course-classes/index.tsx

@@ -1,5 +1,5 @@
 import { Head, router } from '@inertiajs/react';
-import { Plus } from 'lucide-react';
+import { Copy, Plus } from 'lucide-react';
 import { useState } from 'react';
 import type { PaginationState } from '@/components/data-table';
 import { DataTable } from '@/components/data-table';
@@ -12,11 +12,18 @@ import { PageHeader } from '@/components/page-header';
 import { Button } from '@/components/ui/button';
 import {
     Combobox,
+    ComboboxChip,
+    ComboboxChips,
+    ComboboxChipsInput,
+    ComboboxCollection,
     ComboboxContent,
     ComboboxEmpty,
+    ComboboxGroup,
     ComboboxInput,
     ComboboxItem,
+    ComboboxLabel,
     ComboboxList,
+    useComboboxAnchor,
 } from '@/components/ui/combobox';
 import { Label } from '@/components/ui/label';
 import {
@@ -31,6 +38,7 @@ import { useServerTable } from '@/hooks/use-server-table';
 import {
     index as courseClassIndex,
     destroy,
+    duplicate,
     store,
     update,
 } from '@/routes/admin/manage/course-classes';
@@ -39,14 +47,62 @@ import { ClassMethodLabels, ClassMethods } from '@/types/course-class';
 import type { CourseClass } from '@/types/course-class';
 import { createCourseClassColumns } from './columns';
 
-type Course = { id: number; code: string; name: string; department_id: number };
+type Course = {
+    id: number;
+    code: string;
+    name: string;
+    department_id: number;
+    department: { id: number; name: string } | null;
+    semester_number: number | null;
+};
+type CourseGroup = { value: string; items: Course[] };
 type Lecturer = {
     id: number;
     lecturer_number: string;
     departments: { id: number; name: string }[];
     user: { profile: { full_name: string } | null } | null;
 };
-type AcademicTerm = { id: number; name: string; semester: string };
+type AcademicTerm = {
+    id: number;
+    academic_year: string;
+    semester: string;
+};
+type CourseClassAssignment = {
+    id: number;
+    course_id: number;
+    academic_term_id: number;
+};
+
+function courseMatchesTermParity(
+    course: Course,
+    term: AcademicTerm | undefined,
+): boolean {
+    if (!term || course.semester_number === null) {
+        return true;
+    }
+
+    const isOddSemester = course.semester_number % 2 === 1;
+
+    return term.semester === 'odd' ? isOddSemester : !isOddSemester;
+}
+
+function groupCoursesByDepartmentAndSemester(courses: Course[]): CourseGroup[] {
+    const groups: CourseGroup[] = [];
+    let currentKey: string | null = null;
+
+    for (const course of courses) {
+        const key = `${course.department?.name ?? 'Tanpa Jurusan'} — Semester ${course.semester_number ?? 'Tidak ditentukan'}`;
+
+        if (key !== currentKey) {
+            currentKey = key;
+            groups.push({ value: key, items: [] });
+        }
+
+        groups[groups.length - 1].items.push(course);
+    }
+
+    return groups;
+}
 
 type Props = {
     courseClasses: {
@@ -59,6 +115,7 @@ type Props = {
     courses: Course[];
     lecturers: Lecturer[];
     academicTerms: AcademicTerm[];
+    courseClassAssignments: CourseClassAssignment[];
     highlight?: number;
     filters: {
         academic_term_id?: string;
@@ -71,10 +128,12 @@ export default function CourseClassIndex({
     courses,
     lecturers,
     academicTerms,
+    courseClassAssignments,
     highlight,
     filters,
 }: Props) {
     const [createOpen, setCreateOpen] = useState(false);
+    const [duplicateOpen, setDuplicateOpen] = useState(false);
     const [editing, setEditing] = useState<CourseClass | null>(null);
     const [deleting, setDeleting] = useState<CourseClass | null>(null);
     const { hasPermission } = usePermissions();
@@ -170,15 +229,24 @@ export default function CourseClassIndex({
                     }
                     actions={
                         canCreate && (
-                            <Button asChild>
-                                <button
-                                    type="button"
-                                    onClick={() => setCreateOpen(true)}
+                            <div className="flex gap-2">
+                                <Button
+                                    variant="outline"
+                                    onClick={() => setDuplicateOpen(true)}
                                 >
-                                    <Plus className="h-4 w-4" />
-                                    Tambah
-                                </button>
-                            </Button>
+                                    <Copy className="h-4 w-4" />
+                                    Duplikat dari Periode
+                                </Button>
+                                <Button asChild>
+                                    <button
+                                        type="button"
+                                        onClick={() => setCreateOpen(true)}
+                                    >
+                                        <Plus className="h-4 w-4" />
+                                        Tambah
+                                    </button>
+                                </Button>
+                            </div>
                         )
                     }
                 />
@@ -189,6 +257,13 @@ export default function CourseClassIndex({
                     courses={courses}
                     lecturers={lecturers}
                     academicTerms={academicTerms}
+                    courseClassAssignments={courseClassAssignments}
+                />
+
+                <DuplicateForm
+                    open={duplicateOpen}
+                    onOpenChange={setDuplicateOpen}
+                    academicTerms={academicTerms}
                 />
 
                 <EditForm
@@ -203,6 +278,7 @@ export default function CourseClassIndex({
                     courses={courses}
                     lecturers={lecturers}
                     academicTerms={academicTerms}
+                    courseClassAssignments={courseClassAssignments}
                 />
 
                 <DataTable
@@ -214,6 +290,9 @@ export default function CourseClassIndex({
                     onPerPageChange={handlePerPageChange}
                     onSearchChange={handleSearchChange}
                     searchValue={search}
+                    groupBy={(courseClass) =>
+                        `${courseClass.academic_term ? formatAcademicTermLabel(courseClass.academic_term) : 'Tanpa Periode'} — Semester ${courseClass.course?.semester_number ?? 'Tidak ditentukan'}`
+                    }
                     toolbar={
                         <FilterDialog
                             fields={filterFields}
@@ -247,28 +326,46 @@ function CreateForm({
     courses,
     lecturers,
     academicTerms,
+    courseClassAssignments,
 }: {
     open: boolean;
     onOpenChange: (open: boolean) => void;
     courses: Course[];
     lecturers: Lecturer[];
     academicTerms: AcademicTerm[];
+    courseClassAssignments: CourseClassAssignment[];
 }) {
-    const [courseId, setCourseId] = useState('');
+    const [academicTermId, setAcademicTermId] = useState('');
+    const [selectedCourses, setSelectedCourses] = useState<Course[]>([]);
     const [lecturer, setLecturer] = useState<Lecturer | null>(null);
+    const courseAnchor = useComboboxAnchor();
 
-    const selectedCourse = courses.find((c) => String(c.id) === courseId);
-    const availableLecturers = selectedCourse
-        ? lecturers.filter((l) =>
-              l.departments.some(
-                  (department) =>
-                      department.id === selectedCourse.department_id,
-              ),
+    const selectedTerm = academicTerms.find(
+        (term) => String(term.id) === academicTermId,
+    );
+    const takenCourseIds = new Set(
+        courseClassAssignments
+            .filter((a) => String(a.academic_term_id) === academicTermId)
+            .map((a) => a.course_id),
+    );
+    const selectedCourseIds = new Set(selectedCourses.map((c) => c.id));
+    const lecturerDepartmentIds = new Set(
+        lecturer ? lecturer.departments.map((d) => d.id) : [],
+    );
+    const availableCourses = lecturer
+        ? courses.filter(
+              (c) =>
+                  lecturerDepartmentIds.has(c.department_id) &&
+                  !takenCourseIds.has(c.id) &&
+                  !selectedCourseIds.has(c.id) &&
+                  courseMatchesTermParity(c, selectedTerm),
           )
-        : lecturers;
+        : [];
+    const courseGroups = groupCoursesByDepartmentAndSemester(availableCourses);
 
     function reset() {
-        setCourseId('');
+        setAcademicTermId('');
+        setSelectedCourses([]);
         setLecturer(null);
     }
 
@@ -291,8 +388,18 @@ function CreateForm({
                             Periode Akademik{' '}
                             <span className="text-destructive">*</span>
                         </Label>
-                        <input type="hidden" name="academic_term_id" />
-                        <Select name="academic_term_id">
+                        <input
+                            type="hidden"
+                            name="academic_term_id"
+                            value={academicTermId}
+                        />
+                        <Select
+                            value={academicTermId}
+                            onValueChange={(value) => {
+                                setAcademicTermId(value);
+                                setSelectedCourses([]);
+                            }}
+                        >
                             <SelectTrigger className="w-full">
                                 <SelectValue placeholder="Pilih periode akademik" />
                             </SelectTrigger>
@@ -309,39 +416,6 @@ function CreateForm({
                         </Select>
                         <InputError message={errors.academic_term_id} />
                     </div>
-                    <div className="grid gap-2">
-                        <Label>
-                            Mata Kuliah{' '}
-                            <span className="text-destructive">*</span>
-                        </Label>
-                        <input
-                            type="hidden"
-                            name="course_id"
-                            value={courseId}
-                        />
-                        <Select
-                            value={courseId}
-                            onValueChange={(value) => {
-                                setCourseId(value);
-                                setLecturer(null);
-                            }}
-                        >
-                            <SelectTrigger className="w-full">
-                                <SelectValue placeholder="Pilih mata kuliah" />
-                            </SelectTrigger>
-                            <SelectContent>
-                                {courses.map((course) => (
-                                    <SelectItem
-                                        key={course.id}
-                                        value={String(course.id)}
-                                    >
-                                        {course.code} - {course.name}
-                                    </SelectItem>
-                                ))}
-                            </SelectContent>
-                        </Select>
-                        <InputError message={errors.course_id} />
-                    </div>
                     <div className="grid gap-2">
                         <Label>
                             Dosen Pengampu{' '}
@@ -353,22 +427,19 @@ function CreateForm({
                             value={lecturer?.id ?? ''}
                         />
                         <Combobox
-                            items={availableLecturers}
+                            items={lecturers}
                             value={lecturer}
-                            onValueChange={setLecturer}
+                            onValueChange={(value) => {
+                                setLecturer(value);
+                                setSelectedCourses([]);
+                            }}
                             itemToStringLabel={(lect) =>
                                 `${lect.user?.profile?.full_name ?? 'N/A'} - ${lect.lecturer_number}`
                             }
                             isItemEqualToValue={(a, b) => a.id === b.id}
-                            disabled={!selectedCourse}
                         >
                             <ComboboxInput
-                                disabled={!selectedCourse}
-                                placeholder={
-                                    selectedCourse
-                                        ? 'Pilih dosen pengampu'
-                                        : 'Pilih mata kuliah terlebih dahulu'
-                                }
+                                placeholder="Pilih dosen pengampu"
                                 className="w-full"
                             />
                             <ComboboxContent>
@@ -391,6 +462,78 @@ function CreateForm({
                         </Combobox>
                         <InputError message={errors.lecturer_id} />
                     </div>
+                    <div className="grid gap-2">
+                        <Label>
+                            Mata Kuliah{' '}
+                            <span className="text-destructive">*</span>
+                        </Label>
+                        {selectedCourses.map((c) => (
+                            <input
+                                key={c.id}
+                                type="hidden"
+                                name="course_ids[]"
+                                value={c.id}
+                            />
+                        ))}
+                        <Combobox
+                            items={courseGroups}
+                            multiple
+                            value={selectedCourses}
+                            onValueChange={setSelectedCourses}
+                            itemToStringLabel={(c) => `${c.code} - ${c.name}`}
+                            isItemEqualToValue={(a, b) => a.id === b.id}
+                            disabled={!lecturer}
+                        >
+                            <ComboboxChips ref={courseAnchor}>
+                                {selectedCourses.map((c) => (
+                                    <ComboboxChip
+                                        key={c.id}
+                                        aria-label={`${c.code} - ${c.name}`}
+                                    >
+                                        {c.code}
+                                    </ComboboxChip>
+                                ))}
+                                <ComboboxChipsInput
+                                    disabled={!lecturer}
+                                    placeholder={
+                                        !lecturer
+                                            ? 'Pilih dosen pengampu terlebih dahulu'
+                                            : selectedCourses.length === 0
+                                              ? 'Pilih mata kuliah (bisa lebih dari satu)'
+                                              : ''
+                                    }
+                                />
+                            </ComboboxChips>
+                            <ComboboxContent anchor={courseAnchor}>
+                                <ComboboxEmpty>
+                                    Mata kuliah tidak ditemukan.
+                                </ComboboxEmpty>
+                                <ComboboxList>
+                                    {(group: CourseGroup) => (
+                                        <ComboboxGroup
+                                            key={group.value}
+                                            items={group.items}
+                                        >
+                                            <ComboboxLabel>
+                                                {group.value}
+                                            </ComboboxLabel>
+                                            <ComboboxCollection>
+                                                {(c: Course) => (
+                                                    <ComboboxItem
+                                                        key={c.id}
+                                                        value={c}
+                                                    >
+                                                        {c.code} - {c.name}
+                                                    </ComboboxItem>
+                                                )}
+                                            </ComboboxCollection>
+                                        </ComboboxGroup>
+                                    )}
+                                </ComboboxList>
+                            </ComboboxContent>
+                        </Combobox>
+                        <InputError message={errors.course_ids} />
+                    </div>
                     <div className="grid gap-2">
                         <Label>Metode</Label>
                         <input type="hidden" name="method" />
@@ -421,6 +564,7 @@ function EditForm({
     courses,
     lecturers,
     academicTerms,
+    courseClassAssignments,
 }: {
     open: boolean;
     onOpenChange: (open: boolean) => void;
@@ -428,9 +572,15 @@ function EditForm({
     courses: Course[];
     lecturers: Lecturer[];
     academicTerms: AcademicTerm[];
+    courseClassAssignments: CourseClassAssignment[];
 }) {
-    const [courseId, setCourseId] = useState(
-        editing ? String(editing.course_id) : '',
+    const [academicTermId, setAcademicTermId] = useState(
+        editing ? String(editing.academic_term_id) : '',
+    );
+    const [course, setCourse] = useState<Course | null>(
+        editing
+            ? (courses.find((c) => c.id === editing.course_id) ?? null)
+            : null,
     );
     const [lecturer, setLecturer] = useState<Lecturer | null>(
         editing
@@ -438,15 +588,30 @@ function EditForm({
             : null,
     );
 
-    const selectedCourse = courses.find((c) => String(c.id) === courseId);
-    const availableLecturers = selectedCourse
-        ? lecturers.filter((l) =>
-              l.departments.some(
-                  (department) =>
-                      department.id === selectedCourse.department_id,
-              ),
+    const selectedTerm = academicTerms.find(
+        (term) => String(term.id) === academicTermId,
+    );
+    const takenCourseIds = new Set(
+        courseClassAssignments
+            .filter(
+                (a) =>
+                    String(a.academic_term_id) === academicTermId &&
+                    a.id !== editing?.id,
+            )
+            .map((a) => a.course_id),
+    );
+    const lecturerDepartmentIds = new Set(
+        lecturer ? lecturer.departments.map((d) => d.id) : [],
+    );
+    const availableCourses = lecturer
+        ? courses.filter(
+              (c) =>
+                  lecturerDepartmentIds.has(c.department_id) &&
+                  !takenCourseIds.has(c.id) &&
+                  courseMatchesTermParity(c, selectedTerm),
           )
-        : lecturers;
+        : [];
+    const courseGroups = groupCoursesByDepartmentAndSemester(availableCourses);
 
     return (
         <FormDialog
@@ -462,36 +627,36 @@ function EditForm({
                     <div className="grid gap-4">
                         <div className="grid gap-2">
                             <Label>
-                                Mata Kuliah{' '}
+                                Periode Akademik{' '}
                                 <span className="text-destructive">*</span>
                             </Label>
                             <input
                                 type="hidden"
-                                name="course_id"
-                                value={courseId}
+                                name="academic_term_id"
+                                value={academicTermId}
                             />
                             <Select
-                                value={courseId}
+                                value={academicTermId}
                                 onValueChange={(value) => {
-                                    setCourseId(value);
-                                    setLecturer(null);
+                                    setAcademicTermId(value);
+                                    setCourse(null);
                                 }}
                             >
                                 <SelectTrigger className="w-full">
-                                    <SelectValue placeholder="Pilih mata kuliah" />
+                                    <SelectValue placeholder="Pilih periode akademik" />
                                 </SelectTrigger>
                                 <SelectContent>
-                                    {courses.map((course) => (
+                                    {academicTerms.map((term) => (
                                         <SelectItem
-                                            key={course.id}
-                                            value={String(course.id)}
+                                            key={term.id}
+                                            value={String(term.id)}
                                         >
-                                            {course.code} - {course.name}
+                                            {formatAcademicTermLabel(term)}
                                         </SelectItem>
                                     ))}
                                 </SelectContent>
                             </Select>
-                            <InputError message={errors.course_id} />
+                            <InputError message={errors.academic_term_id} />
                         </div>
                         <div className="grid gap-2">
                             <Label>
@@ -504,22 +669,19 @@ function EditForm({
                                 value={lecturer?.id ?? ''}
                             />
                             <Combobox
-                                items={availableLecturers}
+                                items={lecturers}
                                 value={lecturer}
-                                onValueChange={setLecturer}
+                                onValueChange={(value) => {
+                                    setLecturer(value);
+                                    setCourse(null);
+                                }}
                                 itemToStringLabel={(lect) =>
                                     `${lect.user?.profile?.full_name ?? 'N/A'} - ${lect.lecturer_number}`
                                 }
                                 isItemEqualToValue={(a, b) => a.id === b.id}
-                                disabled={!selectedCourse}
                             >
                                 <ComboboxInput
-                                    disabled={!selectedCourse}
-                                    placeholder={
-                                        selectedCourse
-                                            ? 'Pilih dosen pengampu'
-                                            : 'Pilih mata kuliah terlebih dahulu'
-                                    }
+                                    placeholder="Pilih dosen pengampu"
                                     className="w-full"
                                 />
                                 <ComboboxContent>
@@ -544,28 +706,63 @@ function EditForm({
                         </div>
                         <div className="grid gap-2">
                             <Label>
-                                Periode Akademik{' '}
+                                Mata Kuliah{' '}
                                 <span className="text-destructive">*</span>
                             </Label>
-                            <Select
-                                name="academic_term_id"
-                                defaultValue={String(editing.academic_term_id)}
+                            <input
+                                type="hidden"
+                                name="course_id"
+                                value={course?.id ?? ''}
+                            />
+                            <Combobox
+                                items={courseGroups}
+                                value={course}
+                                onValueChange={setCourse}
+                                itemToStringLabel={(c) =>
+                                    `${c.code} - ${c.name}`
+                                }
+                                isItemEqualToValue={(a, b) => a.id === b.id}
+                                disabled={!lecturer}
                             >
-                                <SelectTrigger className="w-full">
-                                    <SelectValue placeholder="Pilih periode akademik" />
-                                </SelectTrigger>
-                                <SelectContent>
-                                    {academicTerms.map((term) => (
-                                        <SelectItem
-                                            key={term.id}
-                                            value={String(term.id)}
-                                        >
-                                            {formatAcademicTermLabel(term)}
-                                        </SelectItem>
-                                    ))}
-                                </SelectContent>
-                            </Select>
-                            <InputError message={errors.academic_term_id} />
+                                <ComboboxInput
+                                    disabled={!lecturer}
+                                    placeholder={
+                                        lecturer
+                                            ? 'Pilih mata kuliah'
+                                            : 'Pilih dosen pengampu terlebih dahulu'
+                                    }
+                                    className="w-full"
+                                />
+                                <ComboboxContent>
+                                    <ComboboxEmpty>
+                                        Mata kuliah tidak ditemukan.
+                                    </ComboboxEmpty>
+                                    <ComboboxList>
+                                        {(group: CourseGroup) => (
+                                            <ComboboxGroup
+                                                key={group.value}
+                                                items={group.items}
+                                            >
+                                                <ComboboxLabel>
+                                                    {group.value}
+                                                </ComboboxLabel>
+                                                <ComboboxCollection>
+                                                    {(c: Course) => (
+                                                        <ComboboxItem
+                                                            key={c.id}
+                                                            value={c}
+                                                        >
+                                                            {c.code} -{' '}
+                                                            {c.name}
+                                                        </ComboboxItem>
+                                                    )}
+                                                </ComboboxCollection>
+                                            </ComboboxGroup>
+                                        )}
+                                    </ComboboxList>
+                                </ComboboxContent>
+                            </Combobox>
+                            <InputError message={errors.course_id} />
                         </div>
                         <div className="grid gap-2">
                             <Label>Metode</Label>
@@ -592,3 +789,133 @@ function EditForm({
         </FormDialog>
     );
 }
+
+function DuplicateForm({
+    open,
+    onOpenChange,
+    academicTerms,
+}: {
+    open: boolean;
+    onOpenChange: (open: boolean) => void;
+    academicTerms: AcademicTerm[];
+}) {
+    const [sourceTermId, setSourceTermId] = useState('');
+    const [targetTermId, setTargetTermId] = useState('');
+
+    const sourceTerm = academicTerms.find(
+        (term) => String(term.id) === sourceTermId,
+    );
+    const targetOptions = academicTerms.filter(
+        (term) =>
+            String(term.id) !== sourceTermId &&
+            (!sourceTerm || term.semester === sourceTerm.semester),
+    );
+
+    function reset() {
+        setSourceTermId('');
+        setTargetTermId('');
+    }
+
+    return (
+        <FormDialog
+            open={open}
+            onOpenChange={onOpenChange}
+            title="Duplikat Kelas Mata Kuliah"
+            action={duplicate()}
+            resetOnSuccess
+            submitLabel="Duplikat"
+            submittingLabel="Menduplikasi..."
+            onSuccess={() => {
+                onOpenChange(false);
+                reset();
+            }}
+        >
+            {({ errors }) => (
+                <div className="grid gap-4">
+                    <p className="text-sm text-muted-foreground">
+                        Menyalin semua kelas mata kuliah (mata kuliah, dosen
+                        pengampu, metode) dari periode sumber ke periode
+                        tujuan. Periode tujuan hanya bisa dipilih dari
+                        semester yang sama (Ganjil ke Ganjil, Genap ke Genap).
+                        Mata kuliah yang sudah punya kelas di periode tujuan
+                        akan dilewati.
+                    </p>
+                    <div className="grid gap-2">
+                        <Label>
+                            Dari Periode{' '}
+                            <span className="text-destructive">*</span>
+                        </Label>
+                        <input
+                            type="hidden"
+                            name="source_academic_term_id"
+                            value={sourceTermId}
+                        />
+                        <Select
+                            value={sourceTermId}
+                            onValueChange={(value) => {
+                                setSourceTermId(value);
+                                setTargetTermId('');
+                            }}
+                        >
+                            <SelectTrigger className="w-full">
+                                <SelectValue placeholder="Pilih periode sumber" />
+                            </SelectTrigger>
+                            <SelectContent>
+                                {academicTerms.map((term) => (
+                                    <SelectItem
+                                        key={term.id}
+                                        value={String(term.id)}
+                                    >
+                                        {formatAcademicTermLabel(term)}
+                                    </SelectItem>
+                                ))}
+                            </SelectContent>
+                        </Select>
+                        <InputError
+                            message={errors.source_academic_term_id}
+                        />
+                    </div>
+                    <div className="grid gap-2">
+                        <Label>
+                            Ke Periode{' '}
+                            <span className="text-destructive">*</span>
+                        </Label>
+                        <input
+                            type="hidden"
+                            name="target_academic_term_id"
+                            value={targetTermId}
+                        />
+                        <Select
+                            value={targetTermId}
+                            onValueChange={setTargetTermId}
+                            disabled={!sourceTermId}
+                        >
+                            <SelectTrigger className="w-full">
+                                <SelectValue
+                                    placeholder={
+                                        sourceTermId
+                                            ? 'Pilih periode tujuan'
+                                            : 'Pilih periode sumber terlebih dahulu'
+                                    }
+                                />
+                            </SelectTrigger>
+                            <SelectContent>
+                                {targetOptions.map((term) => (
+                                    <SelectItem
+                                        key={term.id}
+                                        value={String(term.id)}
+                                    >
+                                        {formatAcademicTermLabel(term)}
+                                    </SelectItem>
+                                ))}
+                            </SelectContent>
+                        </Select>
+                        <InputError
+                            message={errors.target_academic_term_id}
+                        />
+                    </div>
+                </div>
+            )}
+        </FormDialog>
+    );
+}

resources/js/pages/admin/manage/course-registrations/columns.tsx

@@ -1,25 +1,12 @@
 import type { ColumnDef } from '@tanstack/react-table';
-import { Check, Eye, X } from 'lucide-react';
+import { Eye } from 'lucide-react';
 import { RowActions } from '@/components/row-actions';
-import { Badge } from '@/components/ui/badge';
 import { show } from '@/routes/admin/manage/course-registrations';
-import type { CourseRegistrationSubmission } from '@/types/course-registration';
-import { RegistrationStatusLabels } from '@/types/course-registration';
+import type { CourseRegistrationRow } from '@/types/course-registration';
 
-export type { CourseRegistrationSubmission } from '@/types/course-registration';
-
-type CreateColumnsParams = {
-    handleApprove: (submission: CourseRegistrationSubmission) => void;
-    handleRejectClick: (submission: CourseRegistrationSubmission) => void;
-    canApprove: boolean;
-    canReject: boolean;
-};
-
-export function createCourseRegistrationColumns(
-    params: CreateColumnsParams,
-): ColumnDef<CourseRegistrationSubmission>[] {
-    const { handleApprove, handleRejectClick, canApprove, canReject } = params;
+export type { CourseRegistrationRow } from '@/types/course-registration';
 
+export function createCourseRegistrationColumns(): ColumnDef<CourseRegistrationRow>[] {
     return [
         {
             id: 'student',
@@ -33,98 +20,35 @@ export function createCourseRegistrationColumns(
                             {student?.user?.profile?.full_name ?? 'N/A'}
                         </p>
                         <p className="text-xs text-muted-foreground">
-                            {student?.student_number} &middot;{' '}
-                            {student?.department?.name ?? '-'}
+                            {student?.student_number}
                         </p>
                     </div>
                 );
             },
         },
         {
-            id: 'semester',
-            header: () => <span className="block text-center">Semester</span>,
-            meta: {
-                className: 'w-[100px] text-center',
-                headerClassName: 'w-[100px] text-center',
-            },
-            cell: ({ row }) => row.original.student?.current_semester ?? '-',
-        },
-        {
-            id: 'count',
-            header: () => <span className="block text-center">Jumlah</span>,
-            meta: {
-                className: 'w-[100px] text-center',
-                headerClassName: 'w-[100px] text-center',
-            },
-            cell: ({ row }) => row.original.course_registrations.length,
-        },
-        {
-            accessorKey: 'status',
-            header: () => <span className="block text-center">Status</span>,
-            meta: {
-                className: 'w-[140px] text-center',
-                headerClassName: 'w-[140px] text-center',
-            },
-            cell: ({ row }) => {
-                const status = row.original.status;
-
-                return (
-                    <div className="flex justify-center">
-                        <Badge
-                            variant={
-                                status === 'approved'
-                                    ? 'default'
-                                    : status === 'rejected'
-                                      ? 'destructive'
-                                      : 'outline'
-                            }
-                        >
-                            {RegistrationStatusLabels[status]}
-                        </Badge>
-                    </div>
-                );
-            },
+            id: 'department',
+            header: () => <span>Jurusan</span>,
+            cell: ({ row }) => row.original.student?.department?.name ?? '-',
         },
         {
             id: 'actions',
             header: () => <span className="block text-center">Aksi</span>,
             meta: {
-                className: 'w-[130px] text-center',
-                headerClassName: 'w-[130px] text-center',
-            },
-            cell: ({ row }) => {
-                const submission = row.original;
-
-                return (
-                    <RowActions
-                        actions={[
-                            {
-                                label: 'Lihat Detail',
-                                icon: <Eye className="h-4 w-4" />,
-                                href: show.url(submission.id),
-                            },
-                            {
-                                label: 'Setujui',
-                                icon: <Check className="h-4 w-4" />,
-                                iconClassName: 'text-primary',
-                                show:
-                                    submission.status === 'submitted' &&
-                                    canApprove,
-                                onClick: () => handleApprove(submission),
-                            },
-                            {
-                                label: 'Tolak',
-                                icon: <X className="h-4 w-4" />,
-                                iconClassName: 'text-destructive',
-                                show:
-                                    submission.status === 'submitted' &&
-                                    canReject,
-                                onClick: () => handleRejectClick(submission),
-                            },
-                        ]}
-                    />
-                );
+                className: 'w-[80px] text-center',
+                headerClassName: 'w-[80px] text-center',
             },
+            cell: ({ row }) => (
+                <RowActions
+                    actions={[
+                        {
+                            label: 'Lihat Detail',
+                            icon: <Eye className="h-4 w-4" />,
+                            href: show.url(row.original.student_id),
+                        },
+                    ]}
+                />
+            ),
         },
     ];
 }

resources/js/pages/admin/manage/course-registrations/index.tsx

@@ -1,118 +1,43 @@
-import { Head, router } from '@inertiajs/react';
-import { Plus } from 'lucide-react';
-import { useState } from 'react';
+import { Head } from '@inertiajs/react';
 import type { PaginationState } from '@/components/data-table';
 import { DataTable } from '@/components/data-table';
 import type { FilterField } from '@/components/filter-dialog';
 import { FilterDialog } from '@/components/filter-dialog';
-import { FormDialog } from '@/components/form-dialog';
-import InputError from '@/components/input-error';
 import { PageHeader } from '@/components/page-header';
-import { Button } from '@/components/ui/button';
-import { Checkbox } from '@/components/ui/checkbox';
-import {
-    Combobox,
-    ComboboxContent,
-    ComboboxEmpty,
-    ComboboxInput,
-    ComboboxItem,
-    ComboboxList,
-} from '@/components/ui/combobox';
-import { Label } from '@/components/ui/label';
-import {
-    Select,
-    SelectContent,
-    SelectItem,
-    SelectTrigger,
-    SelectValue,
-} from '@/components/ui/select';
-import { Textarea } from '@/components/ui/textarea';
-import { usePermissions } from '@/hooks/use-permissions';
 import { useServerTable } from '@/hooks/use-server-table';
-import {
-    index as courseRegistrationIndex,
-    approve,
-    reject,
-    store,
-} from '@/routes/admin/manage/course-registrations';
-import { formatAcademicTermLabel } from '@/types/academic-term';
+import { index } from '@/routes/admin/manage/course-registrations';
 import type {
-    CourseRegistrationCourseClass,
-    CourseRegistrationStudent,
-    CourseRegistrationSubmission,
-} from '@/types/course-registration';
-import {
-    RegistrationStatuses,
-    RegistrationStatusLabels,
+    CourseRegistrationRow,
+    DepartmentSummary,
 } from '@/types/course-registration';
 import { createCourseRegistrationColumns } from './columns';
 
-type AcademicTermOption = {
-    id: number;
-    name: string;
-    semester: string;
-    is_active: boolean;
-};
-
 type Props = {
+    departments: DepartmentSummary[];
     registrations: {
-        data: CourseRegistrationSubmission[];
+        data: CourseRegistrationRow[];
         current_page: number;
         last_page: number;
         per_page: number;
         total: number;
     };
-    students: CourseRegistrationStudent[];
-    academicTerms: AcademicTermOption[];
-    courseClasses: CourseRegistrationCourseClass[];
-    highlight?: number;
     filters: {
-        status?: string;
-        academic_term_id?: string;
+        department_id?: string;
     };
 };
 
-function studentLabel(student: CourseRegistrationStudent): string {
-    return `${student.user?.profile?.full_name ?? 'N/A'} - ${student.student_number}`;
-}
-
-function courseClassLabel(courseClass: CourseRegistrationCourseClass): string {
-    const course = courseClass.course;
-
-    return `${course?.code ?? '-'} - ${course?.name ?? 'N/A'}`;
-}
-
 export default function CourseRegistrationIndex({
+    departments,
     registrations,
-    students,
-    academicTerms,
-    courseClasses,
-    highlight,
     filters,
 }: Props) {
-    const [createOpen, setCreateOpen] = useState(false);
-    const [rejecting, setRejecting] =
-        useState<CourseRegistrationSubmission | null>(null);
-    const { hasPermission } = usePermissions();
-    const canCreate = hasPermission('create-course-registrations');
-    const canApprove = hasPermission('approve-course-registrations');
-    const canReject = hasPermission('reject-course-registrations');
-
     const filterFields: FilterField[] = [
         {
-            key: 'status',
-            label: 'Status',
-            options: RegistrationStatuses.map((status) => ({
-                value: status,
-                label: RegistrationStatusLabels[status],
-            })),
-        },
-        {
-            key: 'academic_term_id',
-            label: 'Periode Akademik',
-            options: academicTerms.map((term) => ({
-                value: String(term.id),
-                label: formatAcademicTermLabel(term),
+            key: 'department_id',
+            label: 'Jurusan',
+            options: departments.map((department) => ({
+                value: String(department.id),
+                label: department.name,
             })),
         },
     ];
@@ -131,58 +56,19 @@ export default function CourseRegistrationIndex({
         handleSearchChange,
         applyFilters,
     } = useServerTable({
-        route: () => courseRegistrationIndex.url(),
+        route: () => index.url(),
         pagination,
         filters,
     });
 
-    function handleApprove(submission: CourseRegistrationSubmission) {
-        router.patch(approve(submission.id));
-    }
-
-    const columns = createCourseRegistrationColumns({
-        handleApprove,
-        handleRejectClick: (submission) => setRejecting(submission),
-        canApprove,
-        canReject,
-    });
+    const columns = createCourseRegistrationColumns();
 
     return (
         <>
             <Head title="Registrasi KRS" />
 
             <div className="flex h-full flex-1 flex-col gap-6 overflow-x-auto p-4 md:p-6">
-                <PageHeader
-                    title="Registrasi KRS"
-                    description={
-                        highlight && (
-                            <p className="mt-1 text-sm text-muted-foreground">
-                                Menampilkan registrasi dari notifikasi.
-                            </p>
-                        )
-                    }
-                    actions={
-                        canCreate && (
-                            <Button asChild>
-                                <button
-                                    type="button"
-                                    onClick={() => setCreateOpen(true)}
-                                >
-                                    <Plus className="h-4 w-4" />
-                                    Tambah
-                                </button>
-                            </Button>
-                        )
-                    }
-                />
-
-                <CreateForm
-                    open={createOpen}
-                    onOpenChange={setCreateOpen}
-                    students={students}
-                    academicTerms={academicTerms}
-                    courseClasses={courseClasses}
-                />
+                <PageHeader title="Registrasi KRS" />
 
                 <DataTable
                     columns={columns}
@@ -201,257 +87,7 @@ export default function CourseRegistrationIndex({
                         />
                     }
                 />
-
-                <RejectForm
-                    open={rejecting !== null}
-                    onOpenChange={(open) => {
-                        if (!open) {
-                            setRejecting(null);
-                        }
-                    }}
-                    submission={rejecting}
-                />
             </div>
         </>
     );
 }
-
-function RejectForm({
-    open,
-    onOpenChange,
-    submission,
-}: {
-    open: boolean;
-    onOpenChange: (open: boolean) => void;
-    submission: CourseRegistrationSubmission | null;
-}) {
-    return (
-        <FormDialog
-            open={open}
-            onOpenChange={onOpenChange}
-            title="Tolak Registrasi KRS"
-            action={submission ? reject(submission.id) : ''}
-            resetOnSuccess
-            onSuccess={() => onOpenChange(false)}
-        >
-            {({ errors }) => (
-                <div className="grid gap-4">
-                    <p className="text-sm text-muted-foreground">
-                        KRS milik{' '}
-                        <span className="font-medium text-foreground">
-                            {submission?.student?.user?.profile?.full_name ??
-                                'mahasiswa ini'}
-                        </span>{' '}
-                        akan ditolak. Mahasiswa perlu memperbaiki dan mengajukan
-                        ulang.
-                    </p>
-                    <div className="grid gap-2">
-                        <Label htmlFor="reason">
-                            Alasan Penolakan{' '}
-                            <span className="text-destructive">*</span>
-                        </Label>
-                        <Textarea
-                            id="reason"
-                            name="reason"
-                            placeholder="Jelaskan alasan penolakan"
-                        />
-                        <InputError message={errors.reason} />
-                    </div>
-                </div>
-            )}
-        </FormDialog>
-    );
-}
-
-function RegistrationFields({
-    errors,
-    students,
-    academicTerms,
-    courseClasses,
-}: {
-    errors: Record<string, string>;
-    students: CourseRegistrationStudent[];
-    academicTerms: AcademicTermOption[];
-    courseClasses: CourseRegistrationCourseClass[];
-}) {
-    const activeTermId = academicTerms.find((term) => term.is_active)?.id;
-
-    const [student, setStudent] = useState<CourseRegistrationStudent | null>(
-        null,
-    );
-    const [academicTermId, setAcademicTermId] = useState(() =>
-        activeTermId ? String(activeTermId) : '',
-    );
-
-    const availableCourseClasses = courseClasses.filter(
-        (courseClass) =>
-            student &&
-            academicTermId &&
-            courseClass.academic_term_id === Number(academicTermId) &&
-            courseClass.course?.semester_number === student.current_semester &&
-            courseClass.course?.department_id === student.department?.id,
-    );
-
-    const selectionKey = `${student?.id ?? ''}-${academicTermId}`;
-    const [selected, setSelected] = useState<number[]>([]);
-    const [selectedForKey, setSelectedForKey] = useState(selectionKey);
-
-    if (selectionKey !== selectedForKey) {
-        setSelectedForKey(selectionKey);
-        setSelected([]);
-    }
-
-    function toggle(courseClassId: number, checked: boolean) {
-        setSelected((prev) =>
-            checked
-                ? [...prev, courseClassId]
-                : prev.filter((id) => id !== courseClassId),
-        );
-    }
-
-    return (
-        <>
-            <div className="grid gap-2">
-                <Label>
-                    Mahasiswa <span className="text-destructive">*</span>
-                </Label>
-                <input
-                    type="hidden"
-                    name="student_id"
-                    value={student?.id ?? ''}
-                />
-                <Combobox
-                    items={students}
-                    value={student}
-                    onValueChange={setStudent}
-                    itemToStringLabel={studentLabel}
-                    isItemEqualToValue={(a, b) => a.id === b.id}
-                >
-                    <ComboboxInput
-                        placeholder="Pilih mahasiswa"
-                        className="w-full"
-                    />
-                    <ComboboxContent>
-                        <ComboboxEmpty>
-                            Mahasiswa tidak ditemukan.
-                        </ComboboxEmpty>
-                        <ComboboxList>
-                            {(option: CourseRegistrationStudent) => (
-                                <ComboboxItem key={option.id} value={option}>
-                                    {studentLabel(option)}
-                                </ComboboxItem>
-                            )}
-                        </ComboboxList>
-                    </ComboboxContent>
-                </Combobox>
-                <InputError message={errors.student_id} />
-            </div>
-            <div className="grid gap-2">
-                <Label>
-                    Periode Akademik <span className="text-destructive">*</span>
-                </Label>
-                <input
-                    type="hidden"
-                    name="academic_term_id"
-                    value={academicTermId}
-                />
-                <Select
-                    value={academicTermId}
-                    onValueChange={setAcademicTermId}
-                >
-                    <SelectTrigger className="w-full">
-                        <SelectValue placeholder="Pilih periode akademik" />
-                    </SelectTrigger>
-                    <SelectContent>
-                        {academicTerms.map((term) => (
-                            <SelectItem key={term.id} value={String(term.id)}>
-                                {formatAcademicTermLabel(term)}
-                            </SelectItem>
-                        ))}
-                    </SelectContent>
-                </Select>
-                <InputError message={errors.academic_term_id} />
-            </div>
-            <div className="grid gap-2">
-                <Label>
-                    Kelas Mata Kuliah{' '}
-                    <span className="text-destructive">*</span>
-                </Label>
-                {!student || !academicTermId ? (
-                    <p className="text-sm text-muted-foreground">
-                        Pilih mahasiswa dan periode terlebih dahulu.
-                    </p>
-                ) : availableCourseClasses.length === 0 ? (
-                    <p className="text-sm text-muted-foreground">
-                        Tidak ada kelas mata kuliah yang tersedia untuk semester
-                        mahasiswa ini.
-                    </p>
-                ) : (
-                    <div className="grid max-h-64 gap-1 overflow-y-auto rounded-md border p-2">
-                        {availableCourseClasses.map((courseClass) => (
-                            <label
-                                key={courseClass.id}
-                                className="flex items-center gap-2 rounded-md p-2 hover:bg-muted"
-                            >
-                                <Checkbox
-                                    checked={selected.includes(courseClass.id)}
-                                    onCheckedChange={(checked) =>
-                                        toggle(courseClass.id, checked === true)
-                                    }
-                                />
-                                <span className="text-sm">
-                                    {courseClassLabel(courseClass)}
-                                </span>
-                            </label>
-                        ))}
-                    </div>
-                )}
-                {selected.map((courseClassId) => (
-                    <input
-                        key={courseClassId}
-                        type="hidden"
-                        name="course_class_ids[]"
-                        value={courseClassId}
-                    />
-                ))}
-                <InputError message={errors.course_class_ids} />
-            </div>
-        </>
-    );
-}
-
-function CreateForm({
-    open,
-    onOpenChange,
-    students,
-    academicTerms,
-    courseClasses,
-}: {
-    open: boolean;
-    onOpenChange: (open: boolean) => void;
-    students: CourseRegistrationStudent[];
-    academicTerms: AcademicTermOption[];
-    courseClasses: CourseRegistrationCourseClass[];
-}) {
-    return (
-        <FormDialog
-            open={open}
-            onOpenChange={onOpenChange}
-            title="Tambah Registrasi KRS"
-            action={store()}
-            resetOnSuccess
-            onSuccess={() => onOpenChange(false)}
-        >
-            {({ errors }) => (
-                <div className="grid gap-4">
-                    <RegistrationFields
-                        errors={errors}
-                        students={students}
-                        academicTerms={academicTerms}
-                        courseClasses={courseClasses}
-                    />
-                </div>
-            )}
-        </FormDialog>
-    );
-}

resources/js/pages/admin/manage/course-registrations/show.tsx

@@ -1,150 +1,162 @@
-import { Head, Link } from '@inertiajs/react';
+import { Form, Head, Link, router } from '@inertiajs/react';
 import { format } from 'date-fns';
-import { ArrowLeft } from 'lucide-react';
+import { ArrowLeft, Check, Inbox, Send, X } from 'lucide-react';
+import { useState } from 'react';
+import { FormDialog } from '@/components/form-dialog';
+import InputError from '@/components/input-error';
 import { PageHeader } from '@/components/page-header';
+import { SignaturePad } from '@/components/signature-pad';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { index as courseRegistrationIndex } from '@/routes/admin/manage/course-registrations';
-import { formatAcademicTermLabel } from '@/types/academic-term';
-import type { CourseRegistrationSubmission } from '@/types/course-registration';
-import { RegistrationStatusLabels } from '@/types/course-registration';
+import { Checkbox } from '@/components/ui/checkbox';
+import { Label } from '@/components/ui/label';
+import {
+    Table,
+    TableBody,
+    TableCell,
+    TableFooter,
+    TableHead,
+    TableHeader,
+    TableRow,
+} from '@/components/ui/table';
+import { Tabs, TabsList, TabsTrigger } from '@/components/ui/tabs';
+import { Textarea } from '@/components/ui/textarea';
+import {
+    advisor_signature,
+    approve,
+    kaprodi_signature,
+    reject,
+    save,
+} from '@/routes/admin/manage/course-registrations';
+import type {
+    CourseRegistrationSubmission,
+    CourseRegistrationSubmissionEntry,
+    CourseRegistrationSubmissionLog,
+} from '@/types/course-registration';
+import {
+    RegistrationStatusLabels,
+    semesterKey,
+} from '@/types/course-registration';
 
-type Props = {
-    submission: CourseRegistrationSubmission;
+const RegistrationStatusVariants: Record<
+    CourseRegistrationSubmission['status'],
+    'default' | 'secondary' | 'destructive' | 'outline'
+> = {
+    submitted: 'outline',
+    approved: 'default',
+    rejected: 'destructive',
 };
 
-export default function CourseRegistrationShow({ submission }: Props) {
-    const student = submission.student;
+function isSemesterOpenForStudent(
+    semester: number | null,
+    openSemesters: number[],
+    studentCurrentSemester: number,
+): boolean {
+    return (
+        semester !== null &&
+        semester === studentCurrentSemester &&
+        openSemesters.includes(semester)
+    );
+}
+
+function InfoRow({ label, value }: { label: string; value: React.ReactNode }) {
+    return (
+        <div className="grid grid-cols-[auto_1fr] gap-x-2 text-sm">
+            <span className="text-muted-foreground">{label}</span>
+            <span className="font-medium">: {value}</span>
+        </div>
+    );
+}
+
+function SignatureBox({
+    signatureUrl,
+    alt,
+    error,
+    editable,
+}: {
+    signatureUrl: string | null;
+    alt: string;
+    error?: string;
+    editable: boolean;
+}) {
+    if (!editable) {
+        if (!signatureUrl) {
+            return <div className="h-28 w-48" />;
+        }
+
+        return (
+            <div className="h-28 w-48 overflow-hidden rounded border bg-white">
+                <img
+                    src={signatureUrl}
+                    alt={alt}
+                    className="h-full w-full object-contain"
+                />
+            </div>
+        );
+    }
+
+    return <SignaturePad name="signature" error={error} compact />;
+}
+
+function ReviewerSignatureField({
+    signatureUrl,
+    alt,
+    canSign,
+    submitUrl,
+}: {
+    signatureUrl: string | null;
+    alt: string;
+    canSign: boolean;
+    submitUrl: string;
+}) {
+    const [file, setFile] = useState<File | null>(null);
+    const [processing, setProcessing] = useState(false);
+
+    if (signatureUrl) {
+        return (
+            <div className="h-28 w-48 overflow-hidden rounded border bg-white">
+                <img
+                    src={signatureUrl}
+                    alt={alt}
+                    className="h-full w-full object-contain"
+                />
+            </div>
+        );
+    }
+
+    if (!canSign) {
+        return <div className="h-28 w-48" />;
+    }
+
+    function handleSave() {
+        if (!file) {
+            return;
+        }
+
+        setProcessing(true);
+        router.patch(
+            submitUrl,
+            { signature: file },
+            {
+                preserveScroll: true,
+                onFinish: () => setProcessing(false),
+            },
+        );
+    }
 
     return (
-        <>
-            <Head title="Detail Registrasi KRS" />
-
-            <div className="flex h-full flex-1 flex-col gap-6 overflow-x-auto p-4 md:p-6">
-                <PageHeader
-                    title="Detail Registrasi KRS"
-                    actions={
-                        <Button variant="outline" asChild>
-                            <Link href={courseRegistrationIndex.url()}>
-                                <ArrowLeft className="h-4 w-4" />
-                                Kembali
-                            </Link>
-                        </Button>
-                    }
-                />
-
-                <Card>
-                    <CardHeader className="flex flex-row items-start justify-between gap-4">
-                        <div>
-                            <CardTitle>
-                                {student?.user?.profile?.full_name ?? 'N/A'}
-                            </CardTitle>
-                            <p className="mt-1 text-sm text-muted-foreground">
-                                {student?.student_number} &middot;{' '}
-                                {student?.department?.name ?? '-'} &middot;
-                                Semester {student?.current_semester ?? '-'}
-                            </p>
-                            <p className="mt-1 text-sm text-muted-foreground">
-                                Periode:{' '}
-                                {submission.academic_term
-                                    ? formatAcademicTermLabel(
-                                          submission.academic_term,
-                                      )
-                                    : '-'}
-                            </p>
-                        </div>
-                        <Badge
-                            variant={
-                                submission.status === 'approved'
-                                    ? 'default'
-                                    : submission.status === 'rejected'
-                                      ? 'destructive'
-                                      : 'outline'
-                            }
-                        >
-                            {RegistrationStatusLabels[submission.status]}
-                        </Badge>
-                    </CardHeader>
-                </Card>
-
-                <Card>
-                    <CardHeader>
-                        <CardTitle className="text-base">
-                            Tanda Tangan
-                        </CardTitle>
-                    </CardHeader>
-                    <CardContent>
-                        {submission.signature_url ? (
-                            <div className="w-fit rounded-md border bg-white p-2">
-                                <img
-                                    src={submission.signature_url}
-                                    alt="Tanda tangan"
-                                    className="h-24"
-                                />
-                            </div>
-                        ) : (
-                            <p className="text-sm text-muted-foreground">
-                                Tidak ada tanda tangan.
-                            </p>
-                        )}
-                        <p className="mt-2 text-xs text-muted-foreground">
-                            Ditandatangani pada{' '}
-                            {format(
-                                new Date(submission.signed_at),
-                                'd MMM yyyy, HH:mm',
-                            )}
-                        </p>
-                    </CardContent>
-                </Card>
-
-                <Card>
-                    <CardHeader>
-                        <CardTitle className="text-base">
-                            Mata Kuliah (
-                            {submission.course_registrations.length})
-                        </CardTitle>
-                    </CardHeader>
-                    <CardContent className="grid gap-2">
-                        {submission.course_registrations.map((registration) => (
-                            <div
-                                key={registration.id}
-                                className="rounded-md border p-3"
-                            >
-                                <p className="font-medium">
-                                    {registration.course_class?.course?.name ??
-                                        'N/A'}
-                                </p>
-                                <p className="text-xs text-muted-foreground">
-                                    {registration.course_class?.course?.code ??
-                                        '-'}
-                                </p>
-                            </div>
-                        ))}
-                    </CardContent>
-                </Card>
-
-                <Card>
-                    <CardHeader>
-                        <CardTitle className="text-base">Riwayat</CardTitle>
-                    </CardHeader>
-                    <CardContent className="grid gap-2">
-                        {submission.logs.map((log, index) => (
-                            <LogBubble
-                                key={log.id}
-                                log={log}
-                                isResubmission={
-                                    log.status === 'submitted' &&
-                                    submission.logs
-                                        .slice(0, index)
-                                        .some((l) => l.status === 'submitted')
-                                }
-                            />
-                        ))}
-                    </CardContent>
-                </Card>
-            </div>
-        </>
+        <div className="grid gap-1">
+            <SignaturePad name="_signature" compact onCapture={setFile} />
+            <Button
+                type="button"
+                size="sm"
+                disabled={!file || processing}
+                onClick={handleSave}
+            >
+                {processing ? 'Menyimpan...' : 'Simpan TTD'}
+            </Button>
+        </div>
     );
 }
 
@@ -152,7 +164,7 @@ function LogBubble({
     log,
     isResubmission,
 }: {
-    log: CourseRegistrationSubmission['logs'][number];
+    log: CourseRegistrationSubmissionLog;
     isResubmission: boolean;
 }) {
     const actorName = log.actor?.profile?.full_name ?? 'Sistem';
@@ -182,3 +194,563 @@ function LogBubble({
         </div>
     );
 }
+
+function RejectDialog({
+    open,
+    onOpenChange,
+    submissionId,
+}: {
+    open: boolean;
+    onOpenChange: (open: boolean) => void;
+    submissionId: number;
+}) {
+    return (
+        <FormDialog
+            open={open}
+            onOpenChange={onOpenChange}
+            title="Tolak Registrasi KRS"
+            action={reject(submissionId)}
+            resetOnSuccess
+            onSuccess={() => onOpenChange(false)}
+        >
+            {({ errors }) => (
+                <div className="grid gap-2">
+                    <Label htmlFor="reason">
+                        Alasan Penolakan{' '}
+                        <span className="text-destructive">*</span>
+                    </Label>
+                    <Textarea
+                        id="reason"
+                        name="reason"
+                        placeholder="Jelaskan alasan penolakan"
+                    />
+                    <InputError message={errors.reason} />
+                </div>
+            )}
+        </FormDialog>
+    );
+}
+
+function SemesterCard({
+    semester,
+    submission,
+    studentId,
+    isSemesterOpen,
+    backHref,
+    canReview,
+    canSignAsKaprodi,
+    canSignAsAdvisor,
+}: {
+    semester: number | null;
+    submission: CourseRegistrationSubmission;
+    studentId: number;
+    isSemesterOpen: boolean;
+    backHref: string | null;
+    canReview: boolean;
+    canSignAsKaprodi: boolean;
+    canSignAsAdvisor: boolean;
+}) {
+    const [rejecting, setRejecting] = useState(false);
+
+    const student = submission.student;
+    const department = student?.department ?? null;
+    const kaprodi = department?.current_leader?.lecturer ?? null;
+    const advisor = student?.academic_advisor ?? null;
+
+    const isViewOnly = backHref !== null;
+    const notYetSubmitted =
+        submission.status === 'submitted' && !submission.has_registrations;
+    const isLocked =
+        submission.status === 'approved' ||
+        (submission.status === 'submitted' && submission.has_registrations);
+    const canDecide =
+        canReview && submission.status === 'submitted' && !notYetSubmitted;
+    const canReviewersSign =
+        submission.status === 'submitted' && !notYetSubmitted;
+    const missingKaprodiSignature = !submission.kaprodi_signature_url;
+    const missingOwnSignature =
+        (canSignAsKaprodi && !submission.kaprodi_signature_url) ||
+        (canSignAsAdvisor && !submission.advisor_signature_url);
+    const cannotApprove = missingKaprodiSignature || missingOwnSignature;
+
+    const totalCredits = submission.course_registrations.reduce(
+        (sum, registration) =>
+            submission.has_registrations
+                ? registration.is_registered
+                    ? sum + registration.course.credits
+                    : sum
+                : isSemesterOpen && registration.course_class
+                  ? sum + registration.course.credits
+                  : sum,
+        0,
+    );
+
+    function handleApprove() {
+        router.patch(approve.url(submission.id), {}, { preserveScroll: true });
+    }
+
+    return (
+        <Form
+            action={save([studentId, semesterKey(semester)])}
+            options={{ preserveScroll: true }}
+            className="flex flex-col gap-6"
+        >
+            {({ processing, errors }) => (
+                <>
+                    <Card>
+                        <CardContent className="p-6 sm:p-8">
+                            <div className="flex flex-col items-center gap-1 text-center">
+                                <h2 className="text-lg font-bold tracking-wide uppercase">
+                                    Kartu Rencana Studi
+                                </h2>
+                                <Badge
+                                    variant={
+                                        notYetSubmitted
+                                            ? 'secondary'
+                                            : RegistrationStatusVariants[
+                                                  submission.status
+                                              ]
+                                    }
+                                >
+                                    {notYetSubmitted
+                                        ? 'Belum Diajukan'
+                                        : RegistrationStatusLabels[
+                                              submission.status
+                                          ]}
+                                </Badge>
+                            </div>
+
+                            <div className="mt-6 flex flex-col justify-between gap-4 sm:flex-row">
+                                <div className="grid gap-1">
+                                    <InfoRow
+                                        label="Nama"
+                                        value={
+                                            student?.user?.profile?.full_name ??
+                                            'N/A'
+                                        }
+                                    />
+                                    <InfoRow
+                                        label="NIM"
+                                        value={student?.student_number ?? '-'}
+                                    />
+                                </div>
+                                <div className="grid gap-1 sm:text-right">
+                                    <InfoRow
+                                        label="Program Studi"
+                                        value={department?.name ?? '-'}
+                                    />
+                                    <InfoRow
+                                        label="Dosen Pembimbing Akademik"
+                                        value={
+                                            student?.academic_advisor?.user
+                                                ?.profile?.full_name ?? '-'
+                                        }
+                                    />
+                                </div>
+                            </div>
+
+                            <div className="mt-6 overflow-x-auto rounded-md border">
+                                <Table>
+                                    <TableHeader>
+                                        <TableRow>
+                                            <TableHead className="w-[40px]">
+                                                No
+                                            </TableHead>
+                                            <TableHead>Mata Kuliah</TableHead>
+                                            <TableHead>Kode</TableHead>
+                                            <TableHead className="text-center">
+                                                SKS
+                                            </TableHead>
+                                            <TableHead className="w-[40px] text-center">
+                                                Ambil
+                                            </TableHead>
+                                        </TableRow>
+                                    </TableHeader>
+                                    <TableBody>
+                                        {submission.course_registrations
+                                            .length === 0 ? (
+                                            <TableRow>
+                                                <TableCell
+                                                    colSpan={5}
+                                                    className="text-center text-muted-foreground"
+                                                >
+                                                    Belum ada mata kuliah yang
+                                                    dipilih.
+                                                </TableCell>
+                                            </TableRow>
+                                        ) : (
+                                            submission.course_registrations.map(
+                                                (
+                                                    registration: CourseRegistrationSubmissionEntry,
+                                                    index,
+                                                ) => {
+                                                    const course =
+                                                        registration.course;
+                                                    const checked =
+                                                        submission.has_registrations
+                                                            ? registration.is_registered
+                                                            : isSemesterOpen;
+
+                                                    return (
+                                                        <TableRow
+                                                            key={
+                                                                registration.id
+                                                            }
+                                                        >
+                                                            <TableCell>
+                                                                {index + 1}
+                                                            </TableCell>
+                                                            <TableCell>
+                                                                {course.name}
+                                                            </TableCell>
+                                                            <TableCell>
+                                                                {course.code}
+                                                            </TableCell>
+                                                            <TableCell className="text-center">
+                                                                {
+                                                                    course.credits
+                                                                }
+                                                            </TableCell>
+                                                            <TableCell className="text-center">
+                                                                {registration.course_class ? (
+                                                                    <Checkbox
+                                                                        name="course_class_ids[]"
+                                                                        value={
+                                                                            registration
+                                                                                .course_class
+                                                                                .id
+                                                                        }
+                                                                        defaultChecked={
+                                                                            checked
+                                                                        }
+                                                                        disabled={
+                                                                            !isSemesterOpen ||
+                                                                            isViewOnly ||
+                                                                            isLocked
+                                                                        }
+                                                                    />
+                                                                ) : (
+                                                                    <span
+                                                                        className="text-xs text-muted-foreground"
+                                                                        title="Kelas belum dibuka untuk periode ini"
+                                                                    >
+                                                                        —
+                                                                    </span>
+                                                                )}
+                                                            </TableCell>
+                                                        </TableRow>
+                                                    );
+                                                },
+                                            )
+                                        )}
+                                    </TableBody>
+                                    {submission.course_registrations.length >
+                                        0 && (
+                                        <TableFooter>
+                                            <TableRow>
+                                                <TableCell
+                                                    colSpan={3}
+                                                    className="text-right font-medium"
+                                                >
+                                                    Total SKS
+                                                </TableCell>
+                                                <TableCell className="text-center font-medium">
+                                                    {totalCredits}
+                                                </TableCell>
+                                                <TableCell />
+                                            </TableRow>
+                                        </TableFooter>
+                                    )}
+                                </Table>
+                            </div>
+
+                            <div className="mt-10 grid gap-6">
+                                <div className="flex flex-col gap-8 sm:flex-row sm:justify-around">
+                                    <div className="grid gap-1 text-sm">
+                                        <p>Menyetujui,</p>
+                                        <p>Ketua Program Studi,</p>
+                                        <ReviewerSignatureField
+                                            signatureUrl={
+                                                submission.kaprodi_signature_url
+                                            }
+                                            alt="Tanda tangan Ketua Program Studi"
+                                            canSign={
+                                                canSignAsKaprodi &&
+                                                canReviewersSign
+                                            }
+                                            submitUrl={kaprodi_signature.url([
+                                                studentId,
+                                                semesterKey(semester),
+                                            ])}
+                                        />
+                                        <p className="font-semibold">
+                                            {kaprodi?.user?.profile
+                                                ?.full_name ?? '-'}
+                                        </p>
+                                        <p className="text-xs text-muted-foreground">
+                                            NIDN.{' '}
+                                            {kaprodi?.lecturer_number ?? '-'}
+                                        </p>
+                                    </div>
+
+                                    <div className="grid gap-1 text-sm">
+                                        <p>Disetujui oleh,</p>
+                                        <p>Pembimbing Akademik,</p>
+                                        <ReviewerSignatureField
+                                            signatureUrl={
+                                                submission.advisor_signature_url
+                                            }
+                                            alt="Tanda tangan Pembimbing Akademik"
+                                            canSign={
+                                                canSignAsAdvisor &&
+                                                canReviewersSign
+                                            }
+                                            submitUrl={advisor_signature.url([
+                                                studentId,
+                                                semesterKey(semester),
+                                            ])}
+                                        />
+                                        <p className="font-semibold">
+                                            {advisor?.user?.profile
+                                                ?.full_name ?? '-'}
+                                        </p>
+                                        <p className="text-xs text-muted-foreground">
+                                            NIDN.{' '}
+                                            {advisor?.lecturer_number ?? '-'}
+                                        </p>
+                                    </div>
+
+                                    <div className="grid gap-1 text-sm">
+                                        <p>Mahasiswa,</p>
+                                        <SignatureBox
+                                            signatureUrl={
+                                                submission.signature_url
+                                            }
+                                            alt="Tanda tangan mahasiswa"
+                                            error={errors.signature}
+                                            editable={
+                                                isSemesterOpen &&
+                                                !isViewOnly &&
+                                                !isLocked
+                                            }
+                                        />
+                                        <p className="font-semibold">
+                                            {student?.user?.profile
+                                                ?.full_name ?? 'N/A'}
+                                        </p>
+                                        <p className="text-xs text-muted-foreground">
+                                            NIM.{' '}
+                                            {student?.student_number ?? '-'}
+                                        </p>
+                                    </div>
+                                </div>
+                            </div>
+                        </CardContent>
+                    </Card>
+
+                    {!backHref && !isLocked && isSemesterOpen && (
+                        <div className="flex justify-end">
+                            <Button type="submit" disabled={processing}>
+                                <Send className="h-4 w-4" />
+                                {processing ? 'Mengajukan...' : 'Ajukan'}
+                            </Button>
+                        </div>
+                    )}
+
+                    {canDecide && (
+                        <div className="flex flex-col items-end gap-2">
+                            <div className="flex gap-2">
+                                <Button
+                                    type="button"
+                                    variant="destructive"
+                                    onClick={() => setRejecting(true)}
+                                >
+                                    <X className="h-4 w-4" />
+                                    Tolak
+                                </Button>
+                                <Button
+                                    type="button"
+                                    disabled={cannotApprove}
+                                    onClick={handleApprove}
+                                >
+                                    <Check className="h-4 w-4" />
+                                    Setujui
+                                </Button>
+                            </div>
+                            {cannotApprove && (
+                                <p className="text-xs text-muted-foreground">
+                                    {missingKaprodiSignature
+                                        ? 'Menunggu tanda tangan Ketua Program Studi sebelum dapat disetujui.'
+                                        : 'Silakan tanda tangani KRS ini terlebih dahulu sebelum menyetujui.'}
+                                </p>
+                            )}
+                        </div>
+                    )}
+
+                    <Card>
+                        <CardHeader>
+                            <CardTitle className="text-base">Riwayat</CardTitle>
+                        </CardHeader>
+                        <CardContent className="grid gap-2">
+                            {submission.logs.map((log, index) => (
+                                <LogBubble
+                                    key={log.id}
+                                    log={log}
+                                    isResubmission={
+                                        log.status === 'submitted' &&
+                                        submission.logs
+                                            .slice(0, index)
+                                            .some(
+                                                (l) => l.status === 'submitted',
+                                            )
+                                    }
+                                />
+                            ))}
+                        </CardContent>
+                    </Card>
+
+                    <RejectDialog
+                        open={rejecting}
+                        onOpenChange={setRejecting}
+                        submissionId={submission.id}
+                    />
+                </>
+            )}
+        </Form>
+    );
+}
+
+type Props = {
+    submissions: Record<string, CourseRegistrationSubmission>;
+    semesters: (number | null)[];
+    openSemesters: number[];
+    studentCurrentSemester: number;
+    hasActiveTerm: boolean;
+    backHref: string | null;
+    canReview: boolean;
+    canSignAsKaprodi: boolean;
+    canSignAsAdvisor: boolean;
+};
+
+export default function CourseRegistrationDetail({
+    submissions,
+    semesters,
+    openSemesters,
+    studentCurrentSemester,
+    hasActiveTerm,
+    backHref,
+    canReview,
+    canSignAsKaprodi,
+    canSignAsAdvisor,
+}: Props) {
+    const [activeSemester, setActiveSemester] = useState(() =>
+        semesterKey(semesters[0] ?? null),
+    );
+    const currentKey = semesters.some(
+        (semester) => semesterKey(semester) === activeSemester,
+    )
+        ? activeSemester
+        : semesterKey(semesters[0] ?? null);
+
+    const currentSemester =
+        semesters.find((semester) => semesterKey(semester) === currentKey) ??
+        null;
+    const currentSubmission = submissions[currentKey];
+    const studentId = Object.values(submissions)[0]?.student?.id ?? 0;
+
+    return (
+        <>
+            <Head title="Detail Registrasi KRS" />
+
+            <div className="flex h-full flex-1 flex-col gap-6 overflow-x-auto p-4 md:p-6">
+                <PageHeader
+                    title="Detail Registrasi KRS"
+                    actions={
+                        backHref && (
+                            <Button variant="outline" asChild>
+                                <Link href={backHref}>
+                                    <ArrowLeft className="h-4 w-4" />
+                                    Kembali
+                                </Link>
+                            </Button>
+                        )
+                    }
+                />
+
+                {semesters.length > 0 && (
+                    <Tabs value={currentKey} onValueChange={setActiveSemester}>
+                        <TabsList>
+                            {semesters.map((semester) => (
+                                <TabsTrigger
+                                    key={semesterKey(semester)}
+                                    value={semesterKey(semester)}
+                                >
+                                    {semester !== null
+                                        ? `Semester ${semester}`
+                                        : 'Lainnya'}
+                                    {!isSemesterOpenForStudent(
+                                        semester,
+                                        openSemesters,
+                                        studentCurrentSemester,
+                                    ) && ' (Ditutup)'}
+                                </TabsTrigger>
+                            ))}
+                        </TabsList>
+                    </Tabs>
+                )}
+
+                {currentSubmission ? (
+                    <SemesterCard
+                        key={currentKey}
+                        semester={currentSemester}
+                        submission={currentSubmission}
+                        studentId={studentId}
+                        isSemesterOpen={isSemesterOpenForStudent(
+                            currentSemester,
+                            openSemesters,
+                            studentCurrentSemester,
+                        )}
+                        backHref={backHref}
+                        canReview={canReview}
+                        canSignAsKaprodi={canSignAsKaprodi}
+                        canSignAsAdvisor={canSignAsAdvisor}
+                    />
+                ) : (
+                    semesters.length > 0 &&
+                    !hasActiveTerm && (
+                        <Card>
+                            <CardContent className="flex flex-col items-center gap-2 py-12 text-center">
+                                <Inbox className="h-10 w-10 text-muted-foreground" />
+                                <p className="font-medium">
+                                    Belum ada periode akademik aktif
+                                </p>
+                                <p className="max-w-sm text-sm text-muted-foreground">
+                                    Registrasi KRS hanya dapat dilakukan saat
+                                    ada periode akademik yang aktif. Silakan
+                                    hubungi admin untuk informasi lebih
+                                    lanjut.
+                                </p>
+                            </CardContent>
+                        </Card>
+                    )
+                )}
+
+                {semesters.length === 0 && (
+                    <Card>
+                        <CardContent className="flex flex-col items-center gap-2 py-12 text-center">
+                            <Inbox className="h-10 w-10 text-muted-foreground" />
+                            <p className="font-medium">
+                                Belum ada mata kuliah terdaftar
+                            </p>
+                            <p className="max-w-sm text-sm text-muted-foreground">
+                                Belum ada mata kuliah yang terdaftar untuk
+                                jurusan ini. Silakan hubungi admin atau
+                                program studi.
+                            </p>
+                        </CardContent>
+                    </Card>
+                )}
+            </div>
+        </>
+    );
+}

resources/js/pages/admin/master/academic-terms/columns.tsx

@@ -2,6 +2,7 @@ import type { ColumnDef } from '@tanstack/react-table';
 import { Pencil, Trash2 } from 'lucide-react';
 import { ActiveStatusSwitch } from '@/components/active-status-switch';
 import { RowActions } from '@/components/row-actions';
+import { Badge } from '@/components/ui/badge';
 import { SemesterLabels } from '@/types/academic-term';
 import type { AcademicTerm } from '@/types/academic-term';
 import type { Semester } from '@/types/academic-term';
@@ -31,11 +32,11 @@ export function createAcademicTermColumns(
 
     const columns: ColumnDef<AcademicTerm>[] = [
         {
-            accessorKey: 'name',
-            header: () => <span>Nama</span>,
+            accessorKey: 'academic_year',
+            header: () => <span>Tahun Ajaran</span>,
             cell: ({ row }) => (
                 <span className="font-medium">
-                    {row.getValue('name') as string}
+                    {row.getValue('academic_year') as string}
                 </span>
             ),
         },
@@ -66,6 +67,33 @@ export function createAcademicTermColumns(
                 </span>
             ),
         },
+        {
+            id: 'open_semesters',
+            header: () => <span>Semester Dibuka</span>,
+            cell: ({ row }) => {
+                const openSemesters = row.original.open_semesters ?? [];
+
+                if (openSemesters.length === 0) {
+                    return (
+                        <span className="text-xs text-muted-foreground">
+                            Semua Tertutup
+                        </span>
+                    );
+                }
+
+                return (
+                    <div className="flex flex-wrap gap-1">
+                        {[...openSemesters]
+                            .sort((a, b) => a - b)
+                            .map((semester) => (
+                                <Badge key={semester} variant="outline">
+                                    {semester}
+                                </Badge>
+                            ))}
+                    </div>
+                );
+            },
+        },
         {
             accessorKey: 'is_active',
             header: () => <span className="block text-center">Status</span>,

resources/js/pages/admin/master/academic-terms/index.tsx

@@ -182,7 +182,7 @@ export default function AcademicTermIndex({
                 <DataTable
                     columns={columns}
                     data={academicTerms.data}
-                    searchKey="name"
+                    searchKey="academic_year"
                     pagination={pagination}
                     onPageChange={handlePageChange}
                     onPerPageChange={handlePerPageChange}
@@ -206,7 +206,7 @@ export default function AcademicTermIndex({
                     }}
                     title="Hapus Periode Akademik"
                     description={(academicTerm) =>
-                        `Apakah Anda yakin ingin menghapus periode akademik "${academicTerm.name}"? Tindakan ini tidak dapat dibatalkan.`
+                        `Apakah Anda yakin ingin menghapus periode akademik "${academicTerm.academic_year}"? Tindakan ini tidak dapat dibatalkan.`
                     }
                     onConfirm={handleDelete}
                 />
@@ -241,15 +241,16 @@ function CreateForm({
             {({ errors }) => (
                 <div className="grid gap-4">
                     <div className="grid gap-2">
-                        <Label htmlFor="name">
-                            Nama <span className="text-destructive">*</span>
+                        <Label htmlFor="academic_year">
+                            Tahun Ajaran{' '}
+                            <span className="text-destructive">*</span>
                         </Label>
                         <Input
-                            id="name"
-                            name="name"
-                            placeholder="Masukkan nama periode akademik"
+                            id="academic_year"
+                            name="academic_year"
+                            placeholder="Masukkan tahun ajaran, contoh: 2025/2026"
                         />
-                        <InputError message={errors.name} />
+                        <InputError message={errors.academic_year} />
                     </div>
                     <div className="grid gap-2">
                         <Label>
@@ -329,6 +330,7 @@ function CreateForm({
                         <Checkbox id="is_active" name="is_active" value="1" />
                         <Label htmlFor="is_active">Aktif</Label>
                     </div>
+                    <OpenSemestersField idPrefix="create" />
                 </div>
             )}
         </FormDialog>
@@ -368,16 +370,17 @@ function EditForm({
                 editing && (
                     <div className="grid gap-4">
                         <div className="grid gap-2">
-                            <Label htmlFor="edit-name">
-                                Nama <span className="text-destructive">*</span>
+                            <Label htmlFor="edit-academic_year">
+                                Tahun Ajaran{' '}
+                                <span className="text-destructive">*</span>
                             </Label>
                             <Input
-                                id="edit-name"
-                                name="name"
-                                placeholder="Masukkan nama periode akademik"
-                                defaultValue={editing.name}
+                                id="edit-academic_year"
+                                name="academic_year"
+                                placeholder="Masukkan tahun ajaran, contoh: 2025/2026"
+                                defaultValue={editing.academic_year}
                             />
-                            <InputError message={errors.name} />
+                            <InputError message={errors.academic_year} />
                         </div>
                         <div className="grid gap-2">
                             <Label>
@@ -467,9 +470,49 @@ function EditForm({
                             />
                             <Label htmlFor="edit-is_active">Aktif</Label>
                         </div>
+                        <OpenSemestersField
+                            idPrefix="edit"
+                            defaultValue={editing.open_semesters ?? []}
+                        />
                     </div>
                 )
             }
         </FormDialog>
     );
 }
+
+function OpenSemestersField({
+    idPrefix,
+    defaultValue = [],
+}: {
+    idPrefix: string;
+    defaultValue?: number[];
+}) {
+    return (
+        <div className="grid gap-2">
+            <Label>Semester Dibuka untuk KRS</Label>
+            <p className="text-xs text-muted-foreground">
+                Kosongkan untuk menutup semua semester. Centang semester
+                tertentu untuk membuka pendaftaran KRS pada semester itu.
+            </p>
+            <div className="grid grid-cols-4 gap-2">
+                {[1, 2, 3, 4, 5, 6, 7, 8].map((semester) => (
+                    <div key={semester} className="flex items-center gap-2">
+                        <Checkbox
+                            id={`${idPrefix}-open-semester-${semester}`}
+                            name="open_semesters[]"
+                            value={semester}
+                            defaultChecked={defaultValue.includes(semester)}
+                        />
+                        <Label
+                            htmlFor={`${idPrefix}-open-semester-${semester}`}
+                            className="font-normal"
+                        >
+                            Semester {semester}
+                        </Label>
+                    </div>
+                ))}
+            </div>
+        </div>
+    );
+}

resources/js/pages/admin/master/courses/columns.tsx

@@ -1,7 +1,6 @@
 import type { ColumnDef } from '@tanstack/react-table';
 import { Pencil, Trash2 } from 'lucide-react';
 import { RowActions } from '@/components/row-actions';
-import { Badge } from '@/components/ui/badge';
 import type { Course } from '@/types/course';
 
 export type { Course } from '@/types/course';
@@ -33,11 +32,6 @@ export function createCourseColumns(
             header: () => <span>Nama Mata Kuliah</span>,
             cell: ({ row }) => <span>{row.getValue('name') as string}</span>,
         },
-        {
-            accessorKey: 'department.name',
-            header: () => <span>Jurusan</span>,
-            cell: ({ row }) => row.original.department?.name ?? '-',
-        },
         {
             accessorKey: 'credits',
             header: () => <span className="block text-center">SKS</span>,
@@ -51,28 +45,6 @@ export function createCourseColumns(
                 </div>
             ),
         },
-        {
-            accessorKey: 'semester_number',
-            header: () => <span className="block text-center">Semester</span>,
-            meta: {
-                className: 'w-[100px] text-center',
-                headerClassName: 'w-[100px] text-center',
-            },
-            cell: ({ row }) => {
-                const semesterNumber = row.getValue('semester_number') as
-                    number | null;
-
-                return (
-                    <div className="flex justify-center">
-                        {semesterNumber ? (
-                            <Badge variant="secondary">{semesterNumber}</Badge>
-                        ) : (
-                            <span className="text-muted-foreground">-</span>
-                        )}
-                    </div>
-                );
-            },
-        },
     ];
 
     if (canUpdate || canDelete) {

resources/js/pages/admin/master/courses/index.tsx

@@ -191,6 +191,9 @@ export default function CourseIndex({
                     onPerPageChange={handlePerPageChange}
                     onSearchChange={handleSearchChange}
                     searchValue={search}
+                    groupBy={(course) =>
+                        `${course.department?.name ?? 'Tanpa Jurusan'} - Semester ${course.semester_number ?? 'Tidak ditentukan'}`
+                    }
                     toolbar={
                         <FilterDialog
                             fields={filterFields}

resources/js/pages/admin/master/departments/columns.tsx

@@ -55,6 +55,21 @@ export function createDepartmentColumns(
                 );
             },
         },
+        {
+            id: 'kaprodi',
+            header: () => <span>Kaprodi</span>,
+            cell: ({ row }) => {
+                const leader = row.original.current_leader;
+
+                return leader ? (
+                    <span>
+                        {leader.lecturer?.user?.profile?.full_name ?? 'N/A'}
+                    </span>
+                ) : (
+                    <span className="text-muted-foreground">-</span>
+                );
+            },
+        },
     ];
 
     if (canUpdate || canDelete) {

resources/js/pages/admin/master/departments/index.tsx

@@ -1,13 +1,23 @@
 import { Head, router } from '@inertiajs/react';
+import { format } from 'date-fns';
 import { Plus } from 'lucide-react';
 import { useState } from 'react';
 import type { PaginationState } from '@/components/data-table';
 import { DataTable } from '@/components/data-table';
+import { DatePicker } from '@/components/date-picker';
 import { DeleteConfirmDialog } from '@/components/delete-confirm-dialog';
 import { FormDialog } from '@/components/form-dialog';
 import InputError from '@/components/input-error';
 import { PageHeader } from '@/components/page-header';
 import { Button } from '@/components/ui/button';
+import {
+    Combobox,
+    ComboboxContent,
+    ComboboxEmpty,
+    ComboboxInput,
+    ComboboxItem,
+    ComboboxList,
+} from '@/components/ui/combobox';
 import { Input } from '@/components/ui/input';
 import { Label } from '@/components/ui/label';
 import {
@@ -26,7 +36,7 @@ import {
     update,
 } from '@/routes/admin/master/departments';
 import { DegreeLevels } from '@/types/department';
-import type { Department } from '@/types/department';
+import type { Department, DepartmentLecturer } from '@/types/department';
 import { createDepartmentColumns } from './columns';
 
 type Props = {
@@ -37,10 +47,19 @@ type Props = {
         per_page: number;
         total: number;
     };
+    lecturers: DepartmentLecturer[];
     highlight?: number;
 };
 
-export default function DepartmentIndex({ departments, highlight }: Props) {
+function lecturerLabel(lecturer: DepartmentLecturer): string {
+    return `${lecturer.user?.profile?.full_name ?? 'N/A'} - ${lecturer.lecturer_number}`;
+}
+
+export default function DepartmentIndex({
+    departments,
+    lecturers,
+    highlight,
+}: Props) {
     const [createOpen, setCreateOpen] = useState(false);
     const [editing, setEditing] = useState<Department | null>(null);
     const [deleting, setDeleting] = useState<Department | null>(null);
@@ -127,7 +146,11 @@ export default function DepartmentIndex({ departments, highlight }: Props) {
                     }
                 />
 
-                <CreateForm open={createOpen} onOpenChange={setCreateOpen} />
+                <CreateForm
+                    open={createOpen}
+                    onOpenChange={setCreateOpen}
+                    lecturers={lecturers}
+                />
 
                 <EditForm
                     key={editing?.id}
@@ -138,6 +161,7 @@ export default function DepartmentIndex({ departments, highlight }: Props) {
                         }
                     }}
                     editing={editing}
+                    lecturers={lecturers}
                 />
 
                 <DataTable
@@ -169,12 +193,113 @@ export default function DepartmentIndex({ departments, highlight }: Props) {
     );
 }
 
+function KaprodiFields({
+    errors,
+    lecturers,
+    editing,
+}: {
+    errors: Record<string, string>;
+    lecturers: DepartmentLecturer[];
+    editing?: Department | null;
+}) {
+    const [lecturer, setLecturer] = useState<DepartmentLecturer | null>(
+        editing?.current_leader?.lecturer ?? null,
+    );
+    const [startedAt, setStartedAt] = useState<Date | undefined>(
+        editing?.current_leader
+            ? new Date(editing.current_leader.started_at)
+            : undefined,
+    );
+
+    const availableLecturers = editing
+        ? lecturers.filter((l) =>
+              l.departments.some((d) => d.id === editing.id),
+          )
+        : [];
+
+    return (
+        <>
+            <div className="grid gap-2">
+                <Label>
+                    Kaprodi{' '}
+                    {editing && (
+                        <span className="text-destructive">*</span>
+                    )}
+                </Label>
+                <input
+                    type="hidden"
+                    name="lecturer_id"
+                    value={lecturer?.id ?? ''}
+                />
+                <Combobox
+                    items={availableLecturers}
+                    value={lecturer}
+                    disabled={!editing}
+                    onValueChange={(value) => {
+                        setLecturer(value);
+
+                        if (value && !startedAt) {
+                            setStartedAt(new Date());
+                        }
+                    }}
+                    itemToStringLabel={(l) => lecturerLabel(l)}
+                    isItemEqualToValue={(a, b) => a.id === b.id}
+                >
+                    <ComboboxInput
+                        placeholder={
+                            editing
+                                ? 'Pilih kaprodi'
+                                : 'Simpan jurusan terlebih dahulu'
+                        }
+                        disabled={!editing}
+                        className="w-full"
+                    />
+                    <ComboboxContent>
+                        <ComboboxEmpty>
+                            {editing
+                                ? 'Belum ada dosen di jurusan ini.'
+                                : 'Simpan jurusan terlebih dahulu, lalu tambahkan dosen ke jurusan ini.'}
+                        </ComboboxEmpty>
+                        <ComboboxList>
+                            {(l: DepartmentLecturer) => (
+                                <ComboboxItem key={l.id} value={l}>
+                                    {lecturerLabel(l)}
+                                </ComboboxItem>
+                            )}
+                        </ComboboxList>
+                    </ComboboxContent>
+                </Combobox>
+                <InputError message={errors.lecturer_id} />
+            </div>
+            {lecturer && (
+                <div className="grid gap-2">
+                    <Label>
+                        Mulai Menjabat{' '}
+                        <span className="text-destructive">*</span>
+                    </Label>
+                    <input
+                        type="hidden"
+                        name="leadership_started_at"
+                        value={
+                            startedAt ? format(startedAt, 'yyyy-MM-dd') : ''
+                        }
+                    />
+                    <DatePicker value={startedAt} onChange={setStartedAt} />
+                    <InputError message={errors.leadership_started_at} />
+                </div>
+            )}
+        </>
+    );
+}
+
 function CreateForm({
     open,
     onOpenChange,
+    lecturers,
 }: {
     open: boolean;
     onOpenChange: (open: boolean) => void;
+    lecturers: DepartmentLecturer[];
 }) {
     return (
         <FormDialog
@@ -222,6 +347,7 @@ function CreateForm({
                         </Select>
                         <InputError message={errors.degree_level} />
                     </div>
+                    <KaprodiFields errors={errors} lecturers={lecturers} />
                 </div>
             )}
         </FormDialog>
@@ -232,10 +358,12 @@ function EditForm({
     open,
     onOpenChange,
     editing,
+    lecturers,
 }: {
     open: boolean;
     onOpenChange: (open: boolean) => void;
     editing: Department | null;
+    lecturers: DepartmentLecturer[];
 }) {
     return (
         <FormDialog
@@ -297,6 +425,11 @@ function EditForm({
                             </Select>
                             <InputError message={errors.degree_level} />
                         </div>
+                        <KaprodiFields
+                            errors={errors}
+                            lecturers={lecturers}
+                            editing={editing}
+                        />
                     </div>
                 )
             }

resources/js/pages/admin/services/academic-advising-logs/columns.tsx

@@ -58,7 +58,7 @@ export function createAcademicAdvisingLogColumns(
         },
         {
             accessorKey: 'lecturer.user.profile.full_name',
-            header: () => <span>Dosen Wali</span>,
+            header: () => <span>Pembimbing Akademik</span>,
             cell: ({ row }) => {
                 const lecturer = row.original.lecturer;
 

resources/js/pages/admin/services/academic-advising-logs/index.tsx

@@ -258,7 +258,7 @@ function ViewDetailDialog({
 
                         <div className="grid gap-1">
                             <Label className="text-muted-foreground">
-                                Dosen Wali
+                                Pembimbing Akademik
                             </Label>
                             <p>
                                 {log.lecturer?.user?.profile?.full_name ??
@@ -338,7 +338,8 @@ function AdvisingLogFields({
         <>
             <div className="grid gap-2">
                 <Label>
-                    Dosen Wali <span className="text-destructive">*</span>
+                    Pembimbing Akademik{' '}
+                    <span className="text-destructive">*</span>
                 </Label>
                 <input
                     type="hidden"

resources/js/pages/admin/settings/profile.tsx

@@ -303,7 +303,7 @@ export default function Profile({
                                         />
                                     </div>
                                     <div className="grid gap-2">
-                                        <Label>Dosen Wali</Label>
+                                        <Label>Pembimbing Akademik</Label>
                                         <Input
                                             disabled
                                             value={

resources/js/pages/admin/users/students/create.tsx

@@ -35,6 +35,7 @@ type Lecturer = {
     id: number;
     lecturer_number: string;
     user: { profile: { full_name: string } | null } | null;
+    departments: { id: number }[];
 };
 
 type Props = {
@@ -45,8 +46,15 @@ type Props = {
 export default function StudentCreate({ departments, lecturers }: Props) {
     const [gender, setGender] = useState('');
     const [birthDate, setBirthDate] = useState<Date | undefined>();
+    const [departmentId, setDepartmentId] = useState('');
     const [advisor, setAdvisor] = useState<Lecturer | null>(null);
 
+    const availableAdvisors = departmentId
+        ? lecturers.filter((l) =>
+              l.departments.some((d) => String(d.id) === departmentId),
+          )
+        : [];
+
     return (
         <>
             <Head title="Tambah Mahasiswa" />
@@ -279,8 +287,15 @@ export default function StudentCreate({ departments, lecturers }: Props) {
                                         <input
                                             type="hidden"
                                             name="department_id"
+                                            value={departmentId}
                                         />
-                                        <Select name="department_id">
+                                        <Select
+                                            value={departmentId}
+                                            onValueChange={(value) => {
+                                                setDepartmentId(value);
+                                                setAdvisor(null);
+                                            }}
+                                        >
                                             <SelectTrigger className="w-full">
                                                 <SelectValue placeholder="Pilih jurusan" />
                                             </SelectTrigger>
@@ -343,7 +358,7 @@ export default function StudentCreate({ departments, lecturers }: Props) {
                                         </div>
                                         <div className="grid gap-2">
                                             <Label>
-                                                Dosen Wali{' '}
+                                                Pembimbing Akademik{' '}
                                                 <span className="text-red-500">
                                                     *
                                                 </span>
@@ -354,8 +369,9 @@ export default function StudentCreate({ departments, lecturers }: Props) {
                                                 value={advisor?.id ?? ''}
                                             />
                                             <Combobox
-                                                items={lecturers}
+                                                items={availableAdvisors}
                                                 value={advisor}
+                                                disabled={!departmentId}
                                                 onValueChange={setAdvisor}
                                                 itemToStringLabel={(lect) =>
                                                     `${lect.user?.profile?.full_name ?? 'N/A'} - ${lect.lecturer_number}`
@@ -365,12 +381,18 @@ export default function StudentCreate({ departments, lecturers }: Props) {
                                                 }
                                             >
                                                 <ComboboxInput
-                                                    placeholder="Pilih dosen wali"
+                                                    disabled={!departmentId}
+                                                    placeholder={
+                                                        departmentId
+                                                            ? 'Pilih pembimbing akademik'
+                                                            : 'Pilih jurusan terlebih dahulu'
+                                                    }
                                                     className="w-full"
                                                 />
                                                 <ComboboxContent>
                                                     <ComboboxEmpty>
-                                                        Dosen tidak ditemukan.
+                                                        Dosen tidak
+                                                        ditemukan.
                                                     </ComboboxEmpty>
                                                     <ComboboxList>
                                                         {(lect: Lecturer) => (

resources/js/pages/admin/users/students/edit.tsx

@@ -35,6 +35,7 @@ type Lecturer = {
     id: number;
     lecturer_number: string;
     user: { profile: { full_name: string } | null } | null;
+    departments: { id: number }[];
 };
 
 type User = {
@@ -71,12 +72,23 @@ export default function StudentEdit({ user, departments, lecturers }: Props) {
             ? new Date(user.profile.birth_date)
             : undefined,
     );
+    const [departmentId, setDepartmentId] = useState(
+        user.student?.department_id
+            ? String(user.student.department_id)
+            : '',
+    );
     const [advisor, setAdvisor] = useState<Lecturer | null>(
         lecturers.find(
             (lect) => lect.id === user.student?.academic_advisor_id,
         ) ?? null,
     );
 
+    const availableAdvisors = departmentId
+        ? lecturers.filter((l) =>
+              l.departments.some((d) => String(d.id) === departmentId),
+          )
+        : [];
+
     return (
         <>
             <Head title="Edit Mahasiswa" />
@@ -318,16 +330,17 @@ export default function StudentEdit({ user, departments, lecturers }: Props) {
                                                 *
                                             </span>
                                         </Label>
-                                        <Select
+                                        <input
+                                            type="hidden"
                                             name="department_id"
-                                            defaultValue={
-                                                user.student?.department_id
-                                                    ? String(
-                                                          user.student
-                                                              .department_id,
-                                                      )
-                                                    : undefined
-                                            }
+                                            value={departmentId}
+                                        />
+                                        <Select
+                                            value={departmentId}
+                                            onValueChange={(value) => {
+                                                setDepartmentId(value);
+                                                setAdvisor(null);
+                                            }}
                                         >
                                             <SelectTrigger className="w-full">
                                                 <SelectValue placeholder="Pilih jurusan" />
@@ -396,7 +409,7 @@ export default function StudentEdit({ user, departments, lecturers }: Props) {
                                         </div>
                                         <div className="grid gap-2">
                                             <Label>
-                                                Dosen Wali{' '}
+                                                Pembimbing Akademik{' '}
                                                 <span className="text-red-500">
                                                     *
                                                 </span>
@@ -407,8 +420,9 @@ export default function StudentEdit({ user, departments, lecturers }: Props) {
                                                 value={advisor?.id ?? ''}
                                             />
                                             <Combobox
-                                                items={lecturers}
+                                                items={availableAdvisors}
                                                 value={advisor}
+                                                disabled={!departmentId}
                                                 onValueChange={setAdvisor}
                                                 itemToStringLabel={(lect) =>
                                                     `${lect.user?.profile?.full_name ?? 'N/A'} - ${lect.lecturer_number}`
@@ -418,12 +432,18 @@ export default function StudentEdit({ user, departments, lecturers }: Props) {
                                                 }
                                             >
                                                 <ComboboxInput
-                                                    placeholder="Pilih dosen wali"
+                                                    disabled={!departmentId}
+                                                    placeholder={
+                                                        departmentId
+                                                            ? 'Pilih pembimbing akademik'
+                                                            : 'Pilih jurusan terlebih dahulu'
+                                                    }
                                                     className="w-full"
                                                 />
                                                 <ComboboxContent>
                                                     <ComboboxEmpty>
-                                                        Dosen tidak ditemukan.
+                                                        Dosen tidak
+                                                        ditemukan.
                                                     </ComboboxEmpty>
                                                     <ComboboxList>
                                                         {(lect: Lecturer) => (

resources/js/pages/student/course-registrations/columns.tsx

@@ -1,90 +0,0 @@
-import type { ColumnDef } from '@tanstack/react-table';
-import { format } from 'date-fns';
-import { Eye } from 'lucide-react';
-import { RowActions } from '@/components/row-actions';
-import { Badge } from '@/components/ui/badge';
-import { show } from '@/routes/student/course-registrations';
-import { formatAcademicTermLabel } from '@/types/academic-term';
-import type { RegistrationStatus } from '@/types/course-registration';
-import { RegistrationStatusLabels } from '@/types/course-registration';
-
-export type SubmissionSummary = {
-    id: number;
-    status: RegistrationStatus;
-    signed_at: string;
-    academic_term: { id: number; name: string; semester: string } | null;
-    course_registrations_count: number;
-};
-
-export const submissionColumns: ColumnDef<SubmissionSummary>[] = [
-    {
-        id: 'academic_term',
-        header: () => <span>Periode Akademik</span>,
-        cell: ({ row }) => {
-            const term = row.original.academic_term;
-
-            return term ? formatAcademicTermLabel(term) : '-';
-        },
-    },
-    {
-        id: 'count',
-        header: () => <span className="block text-center">Jumlah</span>,
-        meta: {
-            className: 'w-[100px] text-center',
-            headerClassName: 'w-[100px] text-center',
-        },
-        cell: ({ row }) => row.original.course_registrations_count,
-    },
-    {
-        accessorKey: 'status',
-        header: () => <span className="block text-center">Status</span>,
-        meta: {
-            className: 'w-[140px] text-center',
-            headerClassName: 'w-[140px] text-center',
-        },
-        cell: ({ row }) => {
-            const status = row.original.status;
-
-            return (
-                <div className="flex justify-center">
-                    <Badge
-                        variant={
-                            status === 'approved'
-                                ? 'default'
-                                : status === 'rejected'
-                                  ? 'destructive'
-                                  : 'outline'
-                        }
-                    >
-                        {RegistrationStatusLabels[status]}
-                    </Badge>
-                </div>
-            );
-        },
-    },
-    {
-        id: 'signed_at',
-        header: () => <span>Tanggal</span>,
-        cell: ({ row }) =>
-            format(new Date(row.original.signed_at), 'd MMM yyyy, HH:mm'),
-    },
-    {
-        id: 'actions',
-        header: () => <span className="block text-center">Aksi</span>,
-        meta: {
-            className: 'w-[80px] text-center',
-            headerClassName: 'w-[80px] text-center',
-        },
-        cell: ({ row }) => (
-            <RowActions
-                actions={[
-                    {
-                        label: 'Lihat Detail',
-                        icon: <Eye className="h-4 w-4" />,
-                        href: show.url(row.original.id),
-                    },
-                ]}
-            />
-        ),
-    },
-];

resources/js/pages/student/course-registrations/create.tsx

@@ -1,259 +0,0 @@
-import { Form, Head, Link } from '@inertiajs/react';
-import { ArrowLeft, XCircle } from 'lucide-react';
-import { useState } from 'react';
-import InputError from '@/components/input-error';
-import { PageHeader } from '@/components/page-header';
-import { SignaturePad } from '@/components/signature-pad';
-import { Button } from '@/components/ui/button';
-import {
-    Card,
-    CardContent,
-    CardDescription,
-    CardFooter,
-    CardHeader,
-    CardTitle,
-} from '@/components/ui/card';
-import { Checkbox } from '@/components/ui/checkbox';
-import { index, store } from '@/routes/student/course-registrations';
-import type { AcademicTerm } from '@/types/academic-term';
-import { formatAcademicTermLabel } from '@/types/academic-term';
-
-type Lecturer = {
-    user: { profile: { full_name: string } | null } | null;
-};
-
-type Course = {
-    id: number;
-    code: string;
-    name: string;
-    credits: number;
-};
-
-type CourseClass = {
-    id: number;
-    lecturer: Lecturer | null;
-};
-
-type Student = {
-    student_number: string;
-    current_semester: number;
-    department: { name: string } | null;
-    user: { profile: { full_name: string } | null } | null;
-    academic_advisor: {
-        user: { profile: { full_name: string } | null } | null;
-    } | null;
-};
-
-type AvailableCourse = {
-    course: Course;
-    course_class: CourseClass | null;
-};
-
-type Registration = {
-    id: number;
-    course_class: { id: number };
-};
-
-type Submission = {
-    status: 'submitted' | 'approved' | 'rejected';
-    rejection_reason: string | null;
-    course_registrations: Registration[];
-};
-
-type Props = {
-    student: Student;
-    academicTerm: AcademicTerm;
-    submission: Submission | null;
-    availableCourses: AvailableCourse[];
-};
-
-export default function CourseRegistrationCreate({
-    student,
-    academicTerm,
-    submission,
-    availableCourses,
-}: Props) {
-    const [selected, setSelected] = useState<number[]>(() => {
-        if (submission && submission.course_registrations.length > 0) {
-            return submission.course_registrations.map(
-                (registration) => registration.course_class.id,
-            );
-        }
-
-        return availableCourses
-            .filter((item) => item.course_class)
-            .map((item) => item.course_class!.id);
-    });
-
-    function toggle(courseClassId: number, checked: boolean) {
-        setSelected((prev) =>
-            checked
-                ? [...prev, courseClassId]
-                : prev.filter((id) => id !== courseClassId),
-        );
-    }
-
-    const totalCredits = availableCourses
-        .filter(
-            (item) =>
-                item.course_class && selected.includes(item.course_class.id),
-        )
-        .reduce((sum, item) => sum + item.course.credits, 0);
-
-    return (
-        <>
-            <Head title="Isi KRS" />
-
-            <div className="flex h-full flex-1 flex-col gap-6 overflow-x-auto p-4 md:p-6">
-                <PageHeader
-                    title="Isi Kartu Rencana Studi"
-                    actions={
-                        <Button variant="outline" asChild>
-                            <Link href={index.url()}>
-                                <ArrowLeft className="h-4 w-4" />
-                                Kembali
-                            </Link>
-                        </Button>
-                    }
-                />
-
-                <Card>
-                    <CardHeader>
-                        <CardTitle>
-                            {student.user?.profile?.full_name ?? '-'}
-                        </CardTitle>
-                        <CardDescription>
-                            {student.student_number} &middot;{' '}
-                            {student.department?.name ?? '-'} &middot; Semester{' '}
-                            {student.current_semester}
-                        </CardDescription>
-                    </CardHeader>
-                    <CardContent className="grid gap-1 text-sm text-muted-foreground">
-                        <p>
-                            Periode Akademik:{' '}
-                            {formatAcademicTermLabel(academicTerm)}
-                        </p>
-                        <p>
-                            Dosen Pembimbing Akademik:{' '}
-                            {student.academic_advisor?.user?.profile
-                                ?.full_name ?? '-'}
-                        </p>
-                    </CardContent>
-                </Card>
-
-                {submission?.status === 'rejected' && (
-                    <Card className="border-destructive/50">
-                        <CardContent className="pt-6 text-sm">
-                            <p className="flex items-center gap-2 font-medium text-destructive">
-                                <XCircle className="h-4 w-4" />
-                                KRS Anda ditolak
-                            </p>
-                            <p className="mt-1 text-muted-foreground">
-                                {submission.rejection_reason ??
-                                    'Tidak ada alasan yang diberikan.'}
-                            </p>
-                            <p className="mt-1 text-muted-foreground">
-                                Silakan perbaiki pilihan mata kuliah Anda dan
-                                ajukan kembali di bawah ini.
-                            </p>
-                        </CardContent>
-                    </Card>
-                )}
-
-                <Form action={store()}>
-                    {({ errors, processing }) => (
-                        <Card>
-                            <CardHeader>
-                                <CardTitle>
-                                    Pilih Mata Kuliah Semester{' '}
-                                    {student.current_semester}
-                                </CardTitle>
-                                <CardDescription>
-                                    Total {totalCredits} SKS dipilih
-                                </CardDescription>
-                            </CardHeader>
-                            <CardContent className="grid gap-3">
-                                {availableCourses.length === 0 && (
-                                    <p className="text-sm text-muted-foreground">
-                                        Belum ada mata kuliah/kelas untuk
-                                        semester ini pada periode aktif.
-                                    </p>
-                                )}
-                                {availableCourses.map(
-                                    ({ course, course_class }) => (
-                                        <label
-                                            key={course.id}
-                                            className="flex items-start gap-3 rounded-md border p-3 has-disabled:opacity-50"
-                                        >
-                                            <Checkbox
-                                                className="mt-0.5"
-                                                checked={
-                                                    course_class
-                                                        ? selected.includes(
-                                                              course_class.id,
-                                                          )
-                                                        : false
-                                                }
-                                                disabled={!course_class}
-                                                onCheckedChange={(checked) =>
-                                                    course_class &&
-                                                    toggle(
-                                                        course_class.id,
-                                                        checked === true,
-                                                    )
-                                                }
-                                            />
-                                            <div>
-                                                <p className="font-medium">
-                                                    {course.code} -{' '}
-                                                    {course.name}
-                                                </p>
-                                                <p className="text-xs text-muted-foreground">
-                                                    {course.credits} SKS
-                                                    &middot;{' '}
-                                                    {course_class
-                                                        ? (course_class.lecturer
-                                                              ?.user?.profile
-                                                              ?.full_name ??
-                                                          'Dosen belum ditentukan')
-                                                        : 'Kelas belum dibuka'}
-                                                </p>
-                                            </div>
-                                        </label>
-                                    ),
-                                )}
-                                {selected.map((courseClassId) => (
-                                    <input
-                                        key={courseClassId}
-                                        type="hidden"
-                                        name="course_class_ids[]"
-                                        value={courseClassId}
-                                    />
-                                ))}
-                                <InputError message={errors.course_class_ids} />
-                            </CardContent>
-                            <CardContent className="border-t pt-6">
-                                <SignaturePad
-                                    name="signature"
-                                    error={errors.signature}
-                                />
-                            </CardContent>
-                            <CardFooter className="justify-end">
-                                <Button
-                                    type="submit"
-                                    disabled={
-                                        processing || selected.length === 0
-                                    }
-                                >
-                                    {submission?.status === 'rejected'
-                                        ? 'Ajukan Ulang KRS'
-                                        : 'Tanda Tangan KRS'}
-                                </Button>
-                            </CardFooter>
-                        </Card>
-                    )}
-                </Form>
-            </div>
-        </>
-    );
-}

resources/js/pages/student/course-registrations/index.tsx

@@ -1,129 +0,0 @@
-import { Head, Link } from '@inertiajs/react';
-import { XCircle } from 'lucide-react';
-import { DataTable } from '@/components/data-table';
-import { PageHeader } from '@/components/page-header';
-import { Button } from '@/components/ui/button';
-import { Card, CardContent } from '@/components/ui/card';
-import { formatRupiah } from '@/lib/currency';
-import { create } from '@/routes/student/course-registrations';
-import type { AcademicTerm } from '@/types/academic-term';
-import type { RegistrationStatus } from '@/types/course-registration';
-import type { SubmissionSummary } from './columns';
-import { submissionColumns } from './columns';
-
-type PaymentStatus = {
-    has_invoice: boolean;
-    is_paid: boolean;
-    amount_due: number | null;
-    paid_total: number | null;
-};
-
-type ActiveSubmission = {
-    status: RegistrationStatus;
-    rejection_reason: string | null;
-};
-
-type Props = {
-    academicTerm: AcademicTerm | null;
-    payment: PaymentStatus | null;
-    canSubmit: boolean;
-    activeSubmission: ActiveSubmission | null;
-    submissions: SubmissionSummary[];
-};
-
-export default function CourseRegistrationIndex({
-    academicTerm,
-    payment,
-    canSubmit,
-    activeSubmission,
-    submissions,
-}: Props) {
-    return (
-        <>
-            <Head title="KRS" />
-
-            <div className="flex h-full flex-1 flex-col gap-6 overflow-x-auto p-4 md:p-6">
-                <PageHeader
-                    title="Kartu Rencana Studi"
-                    description={
-                        academicTerm && (
-                            <p className="mt-1 text-sm text-muted-foreground">
-                                Periode aktif: {academicTerm.name} (
-                                {academicTerm.semester === 'odd'
-                                    ? 'Ganjil'
-                                    : 'Genap'}
-                                )
-                            </p>
-                        )
-                    }
-                />
-
-                {!academicTerm && (
-                    <Card>
-                        <CardContent className="pt-6 text-sm text-muted-foreground">
-                            Belum ada periode akademik yang aktif. Silakan
-                            hubungi admin.
-                        </CardContent>
-                    </Card>
-                )}
-
-                {academicTerm && payment && !payment.is_paid && (
-                    <Card className="border-destructive/50">
-                        <CardContent className="pt-6 text-sm">
-                            <p className="font-medium text-destructive">
-                                Anda belum bisa mengisi KRS periode ini.
-                            </p>
-                            <p className="mt-1 text-muted-foreground">
-                                {payment.has_invoice
-                                    ? `Tagihan periode ini belum lunas (terbayar ${formatRupiah(payment.paid_total ?? 0)} dari ${formatRupiah(payment.amount_due ?? 0)}).`
-                                    : 'Tagihan untuk periode ini belum diterbitkan. Silakan hubungi staf keuangan.'}
-                            </p>
-                        </CardContent>
-                    </Card>
-                )}
-
-                {academicTerm && payment?.is_paid && canSubmit && (
-                    <Card
-                        className={
-                            activeSubmission?.status === 'rejected'
-                                ? 'border-destructive/50'
-                                : undefined
-                        }
-                    >
-                        <CardContent className="flex flex-col gap-3 pt-6 sm:flex-row sm:items-center sm:justify-between">
-                            <div>
-                                {activeSubmission?.status === 'rejected' ? (
-                                    <>
-                                        <p className="flex items-center gap-2 text-sm font-medium text-destructive">
-                                            <XCircle className="h-4 w-4" />
-                                            KRS Anda untuk periode ini ditolak
-                                        </p>
-                                        <p className="mt-1 text-sm text-muted-foreground">
-                                            {activeSubmission.rejection_reason ??
-                                                'Tidak ada alasan yang diberikan.'}{' '}
-                                            Silakan perbaiki dan ajukan kembali.
-                                        </p>
-                                    </>
-                                ) : (
-                                    <p className="text-sm text-muted-foreground">
-                                        Anda belum mengisi KRS untuk periode
-                                        aktif ini.
-                                    </p>
-                                )}
-                            </div>
-                            <Button asChild>
-                                <Link href={create.url()}>
-                                    {activeSubmission?.status === 'rejected'
-                                        ? 'Ajukan Ulang KRS'
-                                        : 'Isi KRS'}
-                                </Link>
-                            </Button>
-                        </CardContent>
-                    </Card>
-                )}
-
-                <DataTable columns={submissionColumns} data={submissions} />
-            </div>
-        </>
-    );
-}

resources/js/pages/student/course-registrations/show.tsx

@@ -1,180 +0,0 @@
-import { Head, Link } from '@inertiajs/react';
-import { format } from 'date-fns';
-import { ArrowLeft } from 'lucide-react';
-import { PageHeader } from '@/components/page-header';
-import { Badge } from '@/components/ui/badge';
-import { Button } from '@/components/ui/button';
-import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { index } from '@/routes/student/course-registrations';
-import { formatAcademicTermLabel } from '@/types/academic-term';
-import type { CourseRegistrationSubmission } from '@/types/course-registration';
-import { RegistrationStatusLabels } from '@/types/course-registration';
-
-type Props = {
-    submission: CourseRegistrationSubmission;
-};
-
-export default function CourseRegistrationShow({ submission }: Props) {
-    return (
-        <>
-            <Head title="Detail KRS" />
-
-            <div className="flex h-full flex-1 flex-col gap-6 overflow-x-auto p-4 md:p-6">
-                <PageHeader
-                    title="Detail Kartu Rencana Studi"
-                    actions={
-                        <Button variant="outline" asChild>
-                            <Link href={index.url()}>
-                                <ArrowLeft className="h-4 w-4" />
-                                Kembali
-                            </Link>
-                        </Button>
-                    }
-                />
-
-                <Card>
-                    <CardHeader className="flex flex-row items-start justify-between gap-4">
-                        <div>
-                            <CardTitle>
-                                {submission.academic_term
-                                    ? formatAcademicTermLabel(
-                                          submission.academic_term,
-                                      )
-                                    : '-'}
-                            </CardTitle>
-                            <p className="mt-1 text-sm text-muted-foreground">
-                                Ditandatangani pada{' '}
-                                {format(
-                                    new Date(submission.signed_at),
-                                    'd MMM yyyy, HH:mm',
-                                )}
-                            </p>
-                        </div>
-                        <Badge
-                            variant={
-                                submission.status === 'approved'
-                                    ? 'default'
-                                    : submission.status === 'rejected'
-                                      ? 'destructive'
-                                      : 'outline'
-                            }
-                        >
-                            {RegistrationStatusLabels[submission.status]}
-                        </Badge>
-                    </CardHeader>
-                </Card>
-
-                <Card>
-                    <CardHeader>
-                        <CardTitle className="text-base">
-                            Tanda Tangan
-                        </CardTitle>
-                    </CardHeader>
-                    <CardContent>
-                        {submission.signature_url ? (
-                            <div className="w-fit rounded-md border bg-white p-2">
-                                <img
-                                    src={submission.signature_url}
-                                    alt="Tanda tangan"
-                                    className="h-24"
-                                />
-                            </div>
-                        ) : (
-                            <p className="text-sm text-muted-foreground">
-                                Tidak ada tanda tangan.
-                            </p>
-                        )}
-                    </CardContent>
-                </Card>
-
-                <Card>
-                    <CardHeader>
-                        <CardTitle className="text-base">
-                            Mata Kuliah (
-                            {submission.course_registrations.length})
-                        </CardTitle>
-                    </CardHeader>
-                    <CardContent className="grid gap-2">
-                        {submission.course_registrations.map((registration) => (
-                            <div
-                                key={registration.id}
-                                className="rounded-md border p-3"
-                            >
-                                <p className="font-medium">
-                                    {registration.course_class?.course?.code ??
-                                        '-'}{' '}
-                                    -{' '}
-                                    {registration.course_class?.course?.name ??
-                                        'N/A'}
-                                </p>
-                                <p className="text-xs text-muted-foreground">
-                                    {registration.course_class?.course
-                                        ?.credits ?? '-'}{' '}
-                                    SKS &middot;{' '}
-                                    {registration.course_class?.lecturer?.user
-                                        ?.profile?.full_name ??
-                                        'Dosen belum ditentukan'}
-                                </p>
-                            </div>
-                        ))}
-                    </CardContent>
-                </Card>
-
-                <Card>
-                    <CardHeader>
-                        <CardTitle className="text-base">Riwayat</CardTitle>
-                    </CardHeader>
-                    <CardContent className="grid gap-2">
-                        {submission.logs.map((log, index) => (
-                            <LogBubble
-                                key={log.id}
-                                log={log}
-                                isResubmission={
-                                    log.status === 'submitted' &&
-                                    submission.logs
-                                        .slice(0, index)
-                                        .some((l) => l.status === 'submitted')
-                                }
-                            />
-                        ))}
-                    </CardContent>
-                </Card>
-            </div>
-        </>
-    );
-}
-
-function LogBubble({
-    log,
-    isResubmission,
-}: {
-    log: CourseRegistrationSubmission['logs'][number];
-    isResubmission: boolean;
-}) {
-    const actorName = log.actor?.profile?.full_name ?? 'Sistem';
-
-    const message =
-        log.status === 'approved'
-            ? `${actorName} menyetujui KRS ini.`
-            : log.status === 'rejected'
-              ? `${actorName} menolak KRS ini dengan alasan: "${log.reason}"`
-              : isResubmission
-                ? `${actorName} mengajukan ulang KRS.`
-                : `${actorName} mengajukan KRS.`;
-
-    const colorClasses =
-        log.status === 'approved'
-            ? 'border-primary/30 bg-primary/10'
-            : log.status === 'rejected'
-              ? 'border-destructive/30 bg-destructive/10'
-              : 'border-border bg-muted';
-
-    return (
-        <div className={`rounded-lg border px-3 py-2 ${colorClasses}`}>
-            <p className="text-sm">{message}</p>
-            <p className="mt-1 text-xs text-muted-foreground">
-                {format(new Date(log.created_at), 'd MMM yyyy, HH:mm')}
-            </p>
-        </div>
-    );
-}

resources/js/types/academic-term.ts

@@ -10,22 +10,23 @@ export const SemesterLabels: Record<Semester, string> = {
 
 export type AcademicTerm = {
     id: number;
-    name: string;
+    academic_year: string;
     semester: Semester;
     start_date: string;
     formatted_start_date: string;
     end_date: string;
     formatted_end_date: string;
     is_active: boolean;
+    open_semesters: number[] | null;
     created_at: string;
     updated_at: string;
 };
 
 export function formatAcademicTermLabel(term: {
-    name: string;
+    academic_year: string;
     semester: string;
 }): string {
     const label = SemesterLabels[term.semester as Semester];
 
-    return label ? `${term.name} (${label})` : term.name;
+    return label ? `${term.academic_year} (${label})` : term.academic_year;
 }

resources/js/types/course-class.ts

@@ -16,6 +16,7 @@ export type CourseClass = {
         code: string;
         name: string;
         department_id: number;
+        semester_number: number | null;
     } | null;
     lecturer_id: number;
     lecturer: {
@@ -25,7 +26,11 @@ export type CourseClass = {
         user: { profile: { full_name: string } | null } | null;
     } | null;
     academic_term_id: number;
-    academic_term: { id: number; name: string; semester: string } | null;
+    academic_term: {
+        id: number;
+        academic_year: string;
+        semester: string;
+    } | null;
     method: ClassMethod | null;
     enrollments_count: number;
     created_at: string;

resources/js/types/course-registration.ts

@@ -15,63 +15,82 @@ export const RegistrationStatusLabels: Record<RegistrationStatus, string> = {
 export type CourseRegistrationStudent = {
     id: number;
     student_number: string;
-    current_semester: number;
+    user: { profile: { full_name: string } | null } | null;
     department: { id: number; name: string } | null;
+};
+
+export type CourseRegistrationRow = {
+    student_id: number;
+    student: CourseRegistrationStudent | null;
+};
+
+export type DepartmentSummary = {
+    id: number;
+    name: string;
+};
+
+export type CourseRegistrationSubmissionLecturer = {
+    lecturer_number: string;
     user: { profile: { full_name: string } | null } | null;
 };
 
-export type CourseRegistrationCourseClass = {
+export type CourseRegistrationSubmissionStudent = {
     id: number;
-    academic_term_id: number;
+    student_number: string;
+    current_semester: number;
+    department: {
+        id: number;
+        name: string;
+        current_leader: {
+            lecturer: CourseRegistrationSubmissionLecturer | null;
+        } | null;
+    } | null;
+    user: { profile: { full_name: string } | null } | null;
+    academic_advisor: CourseRegistrationSubmissionLecturer | null;
+};
+
+export type CourseRegistrationSubmissionEntry = {
+    id: number;
+    is_registered: boolean;
     course: {
         id: number;
         code: string;
         name: string;
+        credits: number;
         semester_number: number | null;
-        department_id: number;
-        credits?: number;
+    };
+    course_class: {
+        id: number;
     } | null;
-    lecturer?: {
-        user: { profile: { full_name: string } | null } | null;
-    } | null;
-};
-
-export type CourseRegistration = {
-    id: number;
-    student_id: number;
-    academic_term_id: number;
-    course_class_id: number;
-    course_class: CourseRegistrationCourseClass | null;
-    created_at: string;
-    updated_at: string;
-};
-
-export type CourseRegistrationActor = {
-    id: number;
-    profile: { full_name: string } | null;
 };
 
 export type CourseRegistrationSubmissionLog = {
     id: number;
     status: RegistrationStatus;
     reason: string | null;
-    actor: CourseRegistrationActor | null;
+    actor: { profile: { full_name: string } | null } | null;
     created_at: string;
 };
 
 export type CourseRegistrationSubmission = {
     id: number;
-    student_id: number;
-    student: CourseRegistrationStudent | null;
-    academic_term_id: number;
-    academic_term: { id: number; name: string; semester: string } | null;
     status: RegistrationStatus;
+    rejection_reason: string | null;
     signed_at: string;
     signature_url: string | null;
-    rejection_reason: string | null;
-    reviewed_by: number | null;
-    reviewer: CourseRegistrationActor | null;
-    reviewed_at: string | null;
-    course_registrations: CourseRegistration[];
+    kaprodi_signature_url: string | null;
+    advisor_signature_url: string | null;
+    has_registrations: boolean;
+    student: CourseRegistrationSubmissionStudent | null;
+    academic_term: {
+        id: number;
+        academic_year: string;
+        semester: string;
+    } | null;
+    course_registrations: CourseRegistrationSubmissionEntry[];
     logs: CourseRegistrationSubmissionLog[];
 };
+
+export function semesterKey(semester: number | null): string {
+    return semester === null ? 'lainnya' : String(semester);
+}

resources/js/types/department.ts

@@ -2,11 +2,27 @@ export const DegreeLevels = ['D3', 'D4', 'S1', 'S2', 'S3'] as const;
 
 export type DegreeLevel = (typeof DegreeLevels)[number];
 
+export type DepartmentLecturer = {
+    id: number;
+    lecturer_number: string;
+    user: { profile: { full_name: string } | null } | null;
+    departments: { id: number }[];
+};
+
+export type DepartmentLeadership = {
+    id: number;
+    lecturer_id: number;
+    started_at: string;
+    ended_at: string | null;
+    lecturer: DepartmentLecturer | null;
+};
+
 export type Department = {
     id: number;
     code: string;
     name: string;
     degree_level: DegreeLevel | null;
+    current_leader: DepartmentLeadership | null;
     created_at: string;
     updated_at: string;
 };

resources/js/types/tuition-invoice.ts

@@ -11,7 +11,11 @@ export type TuitionInvoice = {
     student_id: number;
     student: TuitionInvoiceStudent | null;
     academic_term_id: number;
-    academic_term: { id: number; name: string; semester: string } | null;
+    academic_term: {
+        id: number;
+        academic_year: string;
+        semester: string;
+    } | null;
     amount_due: string;
     due_date: string | null;
     paid_total: string | null;

routes/admin.php

@@ -98,15 +98,14 @@
     });
 
     Route::prefix('admin/manage')->name('admin.manage.')->group(function () {
-        Route::resource('course-registrations', CourseRegistrationController::class)
-            ->only(['index', 'store'])
-            ->middlewareFor(['index'], 'permission:view-course-registrations')
-            ->middlewareFor(['store'], 'permission:create-course-registrations');
-
-        Route::prefix('course-registrations/{submission}')->name('course-registrations.')->group(function () {
-            Route::get('/', [CourseRegistrationController::class, 'show'])->name('show')->middleware('permission:view-course-registrations');
-            Route::patch('approve', [CourseRegistrationController::class, 'approve'])->name('approve')->middleware('permission:approve-course-registrations');
-            Route::patch('reject', [CourseRegistrationController::class, 'reject'])->name('reject')->middleware('permission:reject-course-registrations');
+        Route::prefix('course-registrations')->name('course-registrations.')->group(function () {
+            Route::get('/', [CourseRegistrationController::class, 'index'])->name('index')->middleware('permission:view-course-registrations');
+            Route::patch('submissions/{submission}/approve', [CourseRegistrationController::class, 'approve'])->name('approve')->middleware('permission:approve-course-registrations');
+            Route::patch('submissions/{submission}/reject', [CourseRegistrationController::class, 'reject'])->name('reject')->middleware('permission:reject-course-registrations');
+            Route::get('{student}', [CourseRegistrationController::class, 'show'])->name('show')->middleware('permission:view-course-registrations');
+            Route::put('{student}/{semester}', [CourseRegistrationController::class, 'save'])->name('save')->middleware('permission:view-course-registrations');
+            Route::patch('{student}/{semester}/kaprodi-signature', [CourseRegistrationController::class, 'signAsKaprodi'])->name('kaprodi_signature')->middleware('permission:view-course-registrations');
+            Route::patch('{student}/{semester}/advisor-signature', [CourseRegistrationController::class, 'signAsAdvisor'])->name('advisor_signature')->middleware('permission:approve-course-registrations');
         });
 
         Route::resource('course-classes', CourseClassController::class)
@@ -116,9 +115,12 @@
             ->middlewareFor(['update'], 'permission:update-course-classes')
             ->middlewareFor(['destroy'], 'permission:delete-course-classes');
 
+        Route::post('course-classes/duplicate', [CourseClassController::class, 'duplicate'])
+            ->name('course-classes.duplicate')
+            ->middleware('permission:create-course-classes');
+
         Route::prefix('course-classes/{course_class}/enrollments')->name('course-classes.enrollments.')->group(function () {
             Route::get('/', [ClassEnrollmentController::class, 'index'])->name('index')->middleware('permission:view-course-class-enrollments');
-            Route::post('/', [ClassEnrollmentController::class, 'store'])->name('store')->middleware('permission:create-course-class-enrollments');
             Route::delete('{enrollment}', [ClassEnrollmentController::class, 'destroy'])->name('destroy')->middleware('permission:delete-course-class-enrollments');
         });
 
@@ -130,15 +132,6 @@
         });
     });
 
-    Route::middleware('role:mahasiswa')->group(function () {
-        Route::prefix('course-registrations')->name('student.course-registrations.')->group(function () {
-            Route::get('/', [CourseRegistrationController::class, 'mine'])->name('index');
-            Route::get('create', [CourseRegistrationController::class, 'create'])->name('create');
-            Route::post('/', [CourseRegistrationController::class, 'store'])->name('store');
-            Route::get('{submission}', [CourseRegistrationController::class, 'show'])->name('show');
-        });
-    });
-
     Route::prefix('admin/finances')->name('admin.finances.')->group(function () {
         Route::resource('tuition-invoices', TuitionInvoiceController::class)
             ->except(['create', 'edit', 'show'])