feat(laporan-pembatalan): tambahkan fitur ekspor laporan pembatalan

- Menambahkan kelas LaporanPembatalanExport untuk mengelola ekspor data laporan pembatalan.
- Mengimplementasikan filter pencarian berdasarkan nomor registrasi, nama pemohon, dan nama cabang.
- Menyediakan opsi untuk memfilter berdasarkan rentang tanggal, status, dan cabang.
- Menyusun data yang diekspor dengan format yang sesuai untuk laporan.

app/Exports/LaporanPembatalanExport.php

@@ -0,0 +1,102 @@
+<?php
+
+    namespace Modules\Lpj\Exports;
+
+    use Illuminate\Http\Request;
+    use Illuminate\Support\Facades\Auth;
+    use Maatwebsite\Excel\Concerns\FromCollection;
+    use Maatwebsite\Excel\Concerns\WithHeadings;
+    use Maatwebsite\Excel\Concerns\WithMapping;
+    use Modules\Lpj\Models\PermohonanPembatalan;
+
+    class LaporanPembatalanExport implements FromCollection, WithHeadings, WithMapping
+    {
+        protected $request;
+
+        public function __construct(Request $request)
+        {
+            $this->request = $request;
+        }
+
+        public function collection()
+        {
+            $query = PermohonanPembatalan::where('status', 'batal');
+
+            if (!Auth::user()->hasAnyRole(['administrator'])) {
+                $query = $query->whereHas('permohonan', function ($q) {
+                    $q->where('branch_id', Auth::user()->branch_id);
+                });
+            }
+
+            // Apply search filter if provided
+            if ($this->request->has('search') && !empty($this->request->get('search'))) {
+                $search = $this->request->get('search');
+                $query->where(function ($q) use ($search) {
+                    $q->whereHas('permohonan', function ($subq) use ($search) {
+                        $subq->where('nomor_registrasi', 'LIKE', '%' . $search . '%');
+                        $subq->orWhereRelation('user', 'name', 'LIKE', '%' . $search . '%');
+                        $subq->orWhereRelation('branch', 'name', 'LIKE', '%' . $search . '%');
+                    });
+                    $q->orWhere('alasan', 'LIKE', '%' . $search . '%');
+                    $q->orWhere('status', 'LIKE', '%' . $search . '%');
+                });
+            }
+
+            // Filter by date range if provided
+            if ($this->request->has('start_date') || $this->request->has('end_date')) {
+                $query->whereBetween('created_at', [
+                    $this->request->get('start_date') ?? '1900-01-01',
+                    $this->request->get('end_date') ?? now()->toDateString()
+                ]);
+            }
+
+            // Filter by status if provided
+            if ($this->request->has('status') && !empty($this->request->get('status'))) {
+                $query->where('status', $this->request->get('status'));
+            }
+
+            // Filter by branch if provided
+            if ($this->request->has('branch_id') && !empty($this->request->get('branch_id'))) {
+                $query->whereHas('permohonan', function ($q) {
+                    $q->where('branch_id', $this->request->get('branch_id'));
+                });
+            }
+
+            return $query->orderBy('created_at', 'desc')
+                         ->get();
+        }
+
+        public function headings(): array
+        {
+            return [
+                'No. Registrasi',
+                'Tanggal Permohonan',
+                'Tanggal Pembatalan',
+                'Cabang',
+                'Pemohon',
+                'Debitur',
+                'Alasan Pembatalan',
+                'Status',
+                'Diajukan Oleh',
+                'Disetujui Oleh',
+                'Tanggal Disetujui'
+            ];
+        }
+
+        public function map($pembatalan): array
+        {
+            return [
+                $pembatalan->permohonan->nomor_registrasi ?? '-',
+                $pembatalan->permohonan->tanggal_permohonan ? date('d-m-Y', strtotime($pembatalan->permohonan->tanggal_permohonan)) : '-',
+                date('d-m-Y', strtotime($pembatalan->created_at)),
+                $pembatalan->permohonan->branch->name ?? '-',
+                $pembatalan->permohonan->user->name ?? '-',
+                $pembatalan->permohonan->debiture->name ?? '-',
+                $pembatalan->alasan_pembatalan,
+                $pembatalan->status,
+                $pembatalan->user->name ?? '-',
+                $pembatalan->authorized_by ? $pembatalan->authorizedUser->name : '-',
+                $pembatalan->authorized_at ? formatTanggalIndonesia(strtotime($pembatalan->authorized_at),1) : '-'
+            ];
+        }
+    }