115 lines
4.0 KiB
PHP
115 lines
4.0 KiB
PHP
<?php
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namespace App\Services\Admin\AcademicClasses;
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use App\Enums\AttendanceStatus;
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use App\Models\Attendance;
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use App\Models\CourseClass;
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use App\Models\User;
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use Illuminate\Database\Eloquent\Collection;
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class AttendanceService
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{
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/**
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* Classes to show on the attendance overview: a dosen only sees classes
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* they lecture, optionally narrowed down to one academic term.
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*/
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public function courseClassesForUser(User $user, ?int $academicTermId): Collection
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{
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return CourseClass::query()
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->select(['course_classes.id', 'course_classes.course_id', 'course_classes.lecturer_id', 'course_classes.academic_term_id'])
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->withCount('enrollments')
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->with([
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'course:id,code,name',
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'academicTerm:id,academic_year,semester,start_date,end_date',
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'attendances' => fn ($q) => $q->select('course_class_id', 'meeting_number')->distinct(),
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])
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->when($user->hasRole('dosen'), fn ($q) => $q->where('lecturer_id', $user->lecturer?->id))
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->when($academicTermId, fn ($q) => $q->where('academic_term_id', $academicTermId))
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->orderBy('course_id')
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->get()
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->each(function (CourseClass $courseClass) {
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$courseClass->setAttribute('meetings_count', $courseClass->attendances->count());
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$courseClass->unsetRelation('attendances');
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});
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}
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/**
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* Every meeting recorded so far for a single class.
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*/
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public function sessionsForClass(CourseClass $courseClass): Collection
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{
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return Attendance::query()
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->select(['meeting_number', 'date'])
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->selectRaw('COUNT(*) as total_count')
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->selectRaw("SUM(CASE WHEN status = 'present' THEN 1 ELSE 0 END) as present_count")
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->where('course_class_id', $courseClass->id)
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->groupBy('meeting_number', 'date')
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->orderByDesc('meeting_number')
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->get();
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}
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/**
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* The meeting number a new session for this class should default to.
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*/
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public function nextMeetingNumber(CourseClass $courseClass): int
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{
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return (Attendance::query()->where('course_class_id', $courseClass->id)->max('meeting_number') ?? 0) + 1;
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}
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public function session(CourseClass $courseClass, int $meetingNumber): array
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{
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$existing = Attendance::query()
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->where('course_class_id', $courseClass->id)
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->where('meeting_number', $meetingNumber)
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->get()
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->keyBy('student_id');
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$roster = $courseClass->enrollments()
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->with('student.user.profile')
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->get()
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->map(function ($enrollment) use ($existing) {
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$attendance = $existing->get($enrollment->student_id);
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return [
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'student_id' => $enrollment->student_id,
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'student' => $enrollment->student,
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'status' => $attendance?->status?->value ?? AttendanceStatus::Absent->value,
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];
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})
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->values();
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return [
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'roster' => $roster,
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'date' => $existing->first()?->date?->format('Y-m-d'),
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];
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}
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public function saveSession(int $courseClassId, int $meetingNumber, string $date, array $records): void
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{
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foreach ($records as $record) {
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Attendance::updateOrCreate(
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[
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'course_class_id' => $courseClassId,
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'student_id' => $record['student_id'],
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'meeting_number' => $meetingNumber,
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],
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[
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'date' => $date,
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'status' => $record['status'],
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'recorded_at' => now(),
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],
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);
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}
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}
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public function deleteSession(int $courseClassId, int $meetingNumber): void
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{
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Attendance::query()
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->where('course_class_id', $courseClassId)
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->where('meeting_number', $meetingNumber)
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->delete();
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}
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}
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