feat: prevent duplicate pending leave requests and restrict submission UI when a pending request exists

app/Http/Controllers/Admin/Hr/LeaveRequestController.php

@@ -2,6 +2,7 @@
 
 namespace App\Http\Controllers\Admin\Hr;
 
+use App\Enums\LeaveRequestStatus;
 use App\Enums\Permission;
 use App\Http\Controllers\Concerns\FlashesEntityMessage;
 use App\Http\Controllers\Concerns\ParsesDataTableQuery;
@@ -29,12 +30,21 @@ public function index(Request $request): Response
         $tableQuery = $this->parseDataTableQuery($request);
         $user = $request->user();
 
+        $hasPending = false;
+        if ($user?->employee !== null) {
+            $hasPending = LeaveRequest::query()
+                ->where('employee_id', $user->employee->id)
+                ->where('status', LeaveRequestStatus::PENDING)
+                ->exists();
+        }
+
         return Inertia::render('admin/hr/leave-requests/Index', [
             'leaveRequests' => $this->leaveRequestService->paginateForIndex($tableQuery),
             'authEmployeeId' => $user?->employee?->id,
             'canSubmit' => $user?->can(Permission::LEAVE_REQUESTS_CREATE->value)
                 && ! $user->can(Permission::LEAVE_REQUESTS_VERIFY->value)
                 && $user->employee !== null,
+            'hasPending' => $hasPending,
             'filters' => $this->dataTableFilters($tableQuery),
         ]);
     }

app/Services/Hr/LeaveRequestService.php

@@ -51,6 +51,17 @@ public function create(array $validated, User $user): void
     {
         $employee = $this->resolveAuthEmployee($user);
 
+        $hasPending = LeaveRequest::query()
+            ->where('employee_id', $employee->id)
+            ->where('status', LeaveRequestStatus::PENDING)
+            ->exists();
+
+        if ($hasPending) {
+            throw ValidationException::withMessages([
+                'start_date' => 'Anda masih memiliki pengajuan cuti yang aktif (menunggu persetujuan).',
+            ]);
+        }
+
         $startDate = Carbon::parse($validated['start_date'])->startOfDay();
         $endDate = Carbon::parse($validated['end_date'])->startOfDay();
 
@@ -107,7 +118,7 @@ public function approve(LeaveRequest $leaveRequest, User $user): void
 
         DB::transaction(function () use ($leaveRequest, $user): void {
             $leaveRequest->status = LeaveRequestStatus::APPROVED;
-            $leaveRequest->verified_at = now();
+            $leaveRequest->verified_at = Carbon::now();
             $leaveRequest->verified_by_id = $user->id;
             $leaveRequest->save();
         });
@@ -129,7 +140,7 @@ public function reject(LeaveRequest $leaveRequest, string $reason, User $user):
 
         DB::transaction(function () use ($leaveRequest, $user, $reason): void {
             $leaveRequest->status = LeaveRequestStatus::REJECTED;
-            $leaveRequest->verified_at = now();
+            $leaveRequest->verified_at = Carbon::now();
             $leaveRequest->verified_by_id = $user->id;
             $leaveRequest->save();
 
@@ -157,7 +168,7 @@ private function calculateTotalDays(Carbon $startDate, Carbon $endDate): int
 
     private function ensureMinimumLeadTime(Carbon $startDate): void
     {
-        $minimumStartDate = now()->startOfDay()->addDay();
+        $minimumStartDate = Carbon::now()->startOfDay()->addDay();
 
         if ($startDate->lt($minimumStartDate)) {
             throw ValidationException::withMessages([

resources/js/pages/admin/hr/leave-requests/Index.vue

@@ -93,7 +93,7 @@ watch(
                 </h2>
             </div>
 
-            <Button v-if="canSubmit" class="shrink-0 self-start sm:self-center" @click="openCreateModal">
+            <Button v-if="canSubmit && !hasPending" class="shrink-0 self-start sm:self-center" @click="openCreateModal">
                 <Plus class="size-4" />
                 Ajukan
             </Button>

resources/js/types/leave-request.ts

@@ -37,6 +37,7 @@ export type LeaveRequestPageProps = {
     leaveRequests: PaginatedLeaveRequests;
     authEmployeeId: number | null;
     canSubmit: boolean;
+    hasPending: boolean;
     filters: {
         search: string;
         sort?: string;