feat: implementasi threshold keuangan otomatis via observer dan action approval

app/Observers/CashRecordObserver.php

@@ -3,7 +3,9 @@
 namespace App\Observers;
 
 use App\Models\ActivityLog;
+use App\Models\Approval;
 use App\Models\CashRecord;
+use App\Models\Vote;
 use Illuminate\Support\Facades\Auth;
 
 class CashRecordObserver
@@ -17,16 +19,62 @@ class CashRecordObserver
             'model_id'    => $record->id,
             'description' => "Transaksi kas baru: {$record->description} sebesar Rp " . number_format($record->amount, 0, ',', '.'),
         ]);
+
+        // Threshold: 500rb–2jt → buat approval ketua
+        if ($record->amount >= 500_000 && $record->amount <= 2_000_000) {
+            Approval::create([
+                'model_type'         => CashRecord::class,
+                'model_id'           => $record->id,
+                'required_approvals' => 1,
+                'status'             => 'pending',
+            ]);
+        }
+
+        // Threshold: > 2jt → buat voting
+        if ($record->amount > 2_000_000) {
+            Vote::create([
+                'title'      => "Persetujuan Transaksi: {$record->description}",
+                'description' => "Transaksi senilai Rp " . number_format($record->amount, 0, ',', '.') . " memerlukan persetujuan voting.",
+                'type'       => 'finance',
+                'related_id' => $record->id,
+                'status'     => 'open',
+                'deadline'   => now()->addDays(3),
+                'created_by' => Auth::id(),
+            ]);
+        }
     }
 
     public function updated(CashRecord $record): void
     {
-        // Setelah diverifikasi, tidak bisa diubah lagi
         if ($record->getOriginal('verified_at') !== null) {
             throw new \Exception('Transaksi yang sudah diverifikasi tidak dapat diubah.');
         }
 
         if ($record->wasChanged('verified_by') && $record->verified_by !== null) {
+            // Pastikan threshold terpenuhi sebelum verifikasi
+            if ($record->amount >= 500_000 && $record->amount <= 2_000_000) {
+                $approval = Approval::where('model_type', CashRecord::class)
+                    ->where('model_id', $record->id)
+                    ->first();
+
+                if (! $approval || $approval->status !== 'approved') {
+                    throw new \Exception('Transaksi ini memerlukan persetujuan ketua sebelum diverifikasi.');
+                }
+            }
+
+            if ($record->amount > 2_000_000) {
+                $vote = Vote::where('type', 'finance')
+                    ->where('related_id', $record->id)
+                    ->first();
+
+                $total   = $vote?->items()->count() ?? 0;
+                $approve = $vote?->items()->where('choice', 'approve')->count() ?? 0;
+
+                if (! $vote || $vote->status !== 'closed' || $total === 0 || ($approve / $total) <= 0.5) {
+                    throw new \Exception('Transaksi ini memerlukan voting dengan mayoritas setuju sebelum diverifikasi.');
+                }
+            }
+
             ActivityLog::create([
                 'user_id'     => Auth::id(),
                 'action'      => 'verified',