feat: tambah budget kegiatan dengan alur threshold approval/voting

app/Filament/Resources/Activities/Schemas/ActivityForm.php

@@ -17,6 +17,8 @@ class ActivityForm
             Textarea::make('description')->label('Deskripsi')->rows(3)->columnSpanFull(),
             DatePicker::make('start_date')->label('Mulai')->required(),
             DatePicker::make('end_date')->label('Selesai')->required(),
+            TextInput::make('budget')->label('Estimasi Budget (Rp)')->numeric()
+                ->helperText('Kosongkan jika tidak ada budget. < Rp500.000: langsung | Rp500.000–2.000.000: approval ketua | > Rp2.000.000: voting'),
             DateTimePicker::make('executed_at')->label('Waktu Pelaksanaan')
                 ->visible(fn ($record) => $record?->status === 'approved'),
             Textarea::make('execution_notes')->label('Catatan Pelaksanaan')->rows(3)->columnSpanFull()

app/Filament/Resources/CashRecords/Schemas/CashRecordForm.php

@@ -2,6 +2,7 @@
 
 namespace App\Filament\Resources\CashRecords\Schemas;
 
+use App\Models\Activity;
 use App\Models\CashCategory;
 use Filament\Forms\Components\DatePicker;
 use Filament\Forms\Components\Placeholder;
@@ -27,6 +28,9 @@ class CashRecordForm
                 ->live(),
             Textarea::make('description')->label('Keterangan')->required()->columnSpanFull(),
             DatePicker::make('date')->label('Tanggal')->required(),
+            Select::make('activity_id')->label('Kegiatan Terkait')
+                ->options(Activity::whereIn('status', ['approved'])->pluck('title', 'id'))
+                ->searchable()->nullable(),
         ]);
     }
 }

app/Models/Activity.php

@@ -9,7 +9,7 @@ use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 class Activity extends Model
 {
     protected $fillable = [
-        'title', 'description', 'start_date', 'end_date',
+        'title', 'description', 'budget', 'start_date', 'end_date',
         'created_by', 'status', 'approved_by', 'approved_at',
         'executed_at', 'execution_notes',
     ];
@@ -44,4 +44,9 @@ class Activity extends Model
         return $this->belongsToMany(User::class, 'activity_member')
             ->withPivot('status', 'notes');
     }
+
+    public function cashRecords(): \Illuminate\Database\Eloquent\Relations\HasMany
+    {
+        return $this->hasMany(CashRecord::class);
+    }
 }

app/Models/CashRecord.php

@@ -4,11 +4,12 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use App\Models\Activity;
 
 class CashRecord extends Model
 {
     protected $fillable = [
-        'amount', 'category_id', 'description',
+        'amount', 'category_id', 'activity_id', 'description',
         'date', 'created_by', 'verified_by', 'verified_at',
     ];
 
@@ -29,6 +30,11 @@ class CashRecord extends Model
         return $this->belongsTo(CashCategory::class, 'category_id');
     }
 
+    public function activity(): BelongsTo
+    {
+        return $this->belongsTo(Activity::class);
+    }
+
     public function creator(): BelongsTo
     {
         return $this->belongsTo(User::class, 'created_by');

app/Observers/ActivityObserver.php

@@ -4,6 +4,8 @@ namespace App\Observers;
 
 use App\Models\Activity;
 use App\Models\ActivityLog;
+use App\Models\Approval;
+use App\Models\Vote;
 use App\Services\NotificationService;
 use Filament\Notifications\Notification;
 use Illuminate\Support\Facades\Auth;
@@ -42,6 +44,27 @@ class ActivityObserver
                 NotificationService::toRole('ketua', 'Kegiatan Menunggu Persetujuan',
                     "Kegiatan \"{$activity->title}\" diajukan untuk disetujui.", 'warning',
                     route('filament.admin.resources.activities.edit', $activity));
+
+                // Threshold budget
+                $budget = $activity->budget;
+                if ($budget >= 500_000 && $budget <= 2_000_000) {
+                    Approval::create([
+                        'model_type'         => Activity::class,
+                        'model_id'           => $activity->id,
+                        'required_approvals' => 1,
+                        'status'             => 'pending',
+                    ]);
+                } elseif ($budget > 2_000_000) {
+                    Vote::create([
+                        'title'       => "Persetujuan Budget Kegiatan: {$activity->title}",
+                        'description' => "Budget kegiatan senilai Rp " . number_format($budget, 0, ',', '.') . " memerlukan persetujuan voting.",
+                        'type'        => 'finance',
+                        'related_id'  => $activity->id,
+                        'status'      => 'open',
+                        'deadline'    => now()->addDays(3),
+                        'created_by'  => Auth::id() ?? $activity->created_by,
+                    ]);
+                }
             }
 
             if (in_array($new, ['approved', 'rejected']) && $activity->creator) {

database/migrations/2026_04_05_161652_add_budget_to_activities_and_activity_id_to_cash_records.php

@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('activities', function (Blueprint $table) {
+            $table->unsignedBigInteger('budget')->nullable()->after('description');
+        });
+
+        Schema::table('cash_records', function (Blueprint $table) {
+            $table->foreignId('activity_id')->nullable()->constrained('activities')->nullOnDelete()->after('category_id');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('cash_records', function (Blueprint $table) {
+            $table->dropForeignIdFor(\App\Models\Activity::class, 'activity_id');
+            $table->dropColumn('activity_id');
+        });
+
+        Schema::table('activities', function (Blueprint $table) {
+            $table->dropColumn('budget');
+        });
+    }
+};