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 # Tahap 9: Fondasi Infrastruktur Sistem Rental
 **Status**: ✅ COMPLETED  
 **Tanggal**: Fase 1 - Audit & Discovery  
 **Objective**: Membangun fondasi teknis untuk sistem yang stabil, aman, dan scalable
 ---
 ## 📋 Daftar Isi
 1. [Overview](#overview)
 2. [Deliverables](#deliverables)
 3. [Models & Database](#models--database)
 4. [Services Layer](#services-layer)
 5. [Controllers Refactoring](#controllers-refactoring)
 6. [Implementation Details](#implementation-details)
 7. [Technical Architecture](#technical-architecture)
 ---
 ## Overview
 Tahap 9 adalah fase foundational yang membangun infrastruktur inti untuk mendukung Tahap 10 (hardening). Fokus utama:
 - ✅ Membuat service layer untuk business logic
 - ✅ Implementing policies untuk authorization
 - ✅ Mengintegrasikan file upload dengan validation
 - ✅ Slug management system yang konsisten
 - ✅ Migration & model standardization
 ### Scope Tahap 9
 **TIDAK menambah fitur bisnis besar**, hanya:
 - Infrastructure improvements
 - Code organization & patterns
 - Security foundation
 - Data integrity
 ---
 ## Deliverables
 ### 1. Service Layer (4 Services)
 #### PromoService (Existing)
 ```php
 // Location: app/Services/PromoService.php
 // Purpose: Promo business logic
 const LOYAL_COMPLETED_THRESHOLD = 3;
 public function isUserLoyal($userId, $rentalCompanyId): bool
 public function getApplicablePromos($bookingData): Collection
 ```
 #### SlugService (New)
 ```php
 // Location: app/Services/SlugService.php
 // Purpose: Centralized slug generation dengan uniqueness guarantee
 public function generateUnique(
    string $modelClass, 
    string $column, 
    string $source, 
    ?int $ignoreId = null
 ): string
 ```
 **Fitur:**
 - Automatic slug generation dari source text
 - Collision detection & appending (-1, -2, etc)
 - Support untuk model yang berbeda
 - Case-insensitive duplicate checking
 #### FileUploadService (New)
 ```php
 // Location: app/Services/FileUploadService.php
 // Purpose: Secure file upload dengan naming & organization
 public function storePublic(
    UploadedFile $file, 
    string $directory
 ): string // returns "vehicles/main/2026/04/uuid.jpg"
 public function deletePublic(string $path): bool
 ```
 **Fitur:**
 - UUID-based filename (prevents collisions)
 - Date-based subdirectories (Y/m format)
 - Safe deletion with error handling
 - Returns relative path untuk storage
 #### NotificationService (New - Tahap 10 prep)
 ```php
 // Location: app/Services/NotificationService.php
 // Purpose: Database notification management
 public function notifyUser(
    int $userId, 
    string $title, 
    string $message, 
    string $type,
    ?string $url = null,
    ?string $referenceType = null,
    ?int $referenceId = null
 ): UserNotification
 ```
 #### ActivityLogService (New - Tahap 10 prep)
 ```php
 // Location: app/Services/ActivityLogService.php
 // Purpose: Immutable audit logging
 public function log(
    string $action,
    string $description,
    string $targetType,
    int $targetId,
    ?array $meta = null,
    ?int $userId = null
 ): ActivityLog
 ```
 ---
 ### 2. Models & Database Migrations
 #### Models Created/Updated
 **UserNotification**
 ```php
 // Table: user_notifications
 // Columns:
 // - id: bigint
 // - user_id: bigint (FK users)
 // - title: string
 // - message: text
 // - type: enum (info, success, warning, error)
 // - reference_type: string (nullable) - booking, payment, etc
 // - reference_id: bigint (nullable)
 // - url: string (nullable)
 // - read_at: timestamp (nullable)
 // - created_at, updated_at
 // Key Methods:
 public function markAsRead(): self
 public function isUnread(): bool
 // Relationships:
 public function user(): BelongsTo
 ```
 **ActivityLog**
 ```php
 // Table: activity_logs
 // Columns:
 // - id: bigint
 // - user_id: bigint (FK users, nullable for system actions)
 // - action: string (e.g., 'vehicle.created')
 // - target_type: string (vehicle, booking, payment, etc)
 // - target_id: bigint
 // - description: text
 // - meta: json (contextual data)
 // - created_at (no updated_at - append-only)
 // Indexes:
 // - user_id
 // - action
 // - created_at
 // Relationships:
 public function user(): BelongsTo
 ```
 **RentalCompany (Enhanced)**
 - Booted with automatic `company_slug` generation
 - Uses `SlugService::generateUnique()`
 **Vehicle (Enhanced)**
 - Uses `SlugService` in controller for `slug` generation
 - Primary image relationship optimized
 #### Migration Files
 **Migrations/2026_04_23_xxxxxx_create_user_notifications_table.php**
 ```php
 Schema::create('user_notifications', function (Blueprint $table) {
    $table->id();
    $table->foreignId('user_id')->constrained('users')->cascadeOnDelete();
    $table->string('title');
    $table->text('message');
    $table->enum('type', ['info', 'success', 'warning', 'error']);
    $table->string('reference_type')->nullable();
    $table->unsignedBigInteger('reference_id')->nullable();
    $table->string('url')->nullable();
    $table->timestamp('read_at')->nullable();
    $table->timestamps();
    $table->index(['user_id', 'read_at']);
    $table->index('created_at');
 });
 ```
 **Migrations/2026_04_23_xxxxxx_create_activity_logs_table.php**
 ```php
 Schema::create('activity_logs', function (Blueprint $table) {
    $table->id();
    $table->foreignId('user_id')->nullable()->constrained('users')->cascadeOnDelete();
    $table->string('action');
    $table->string('target_type');
    $table->unsignedBigInteger('target_id');
    $table->text('description');
    $table->json('meta')->nullable();
    $table->timestamp('created_at')->useCurrent();
    $table->index('user_id');
    $table->index('action');
    $table->index('created_at');
    $table->index(['target_type', 'target_id']);
 });
 ```
 ---
 ### 3. Policies Layer
 #### 6 Policy Classes
 **VehiclePolicy**
 ```php
 // Location: app/Policies/VehiclePolicy.php
 public function view(User $user, Vehicle $vehicle): bool
    // admin_rental owns rental_company OR super_admin
 public function create(User $user): bool
    // admin_rental must have rental_company
 public function update(User $user, Vehicle $vehicle): bool
    // Delegates to view()
 public function delete(User $user, Vehicle $vehicle): bool
    // Delegates to view()
 ```
 **BookingPolicy**
 ```php
 // Location: app/Policies/BookingPolicy.php
 public function view(User $user, Booking $booking): bool
    // customer owns booking OR admin_rental owns rental_company OR super_admin
 public function create(User $user): bool
    // customer only
 public function update(User $user, Booking $booking): bool
    // Delegates to view()
 ```
 **PaymentPolicy**
 ```php
 // Location: app/Policies/PaymentPolicy.php
 public function view(User $user, Payment $payment): bool
    // customer owns booking OR admin_rental owns rental_company OR super_admin
 public function update(User $user, Payment $payment): bool
    // Delegates to view()
 ```
 **PromoPolicy**
 ```php
 // Location: app/Policies/PromoPolicy.php
 public function view(User $user, Promo $promo): bool
    // admin_rental owns rental_company OR super_admin
 public function create(User $user): bool
    // admin_rental must have rental_company
 public function update(User $user, Promo $promo): bool
    // Delegates to view()
 public function delete(User $user, Promo $promo): bool
    // Delegates to view()
 ```
 **ReviewPolicy**
 ```php
 // Location: app/Policies/ReviewPolicy.php
 public function view(User $user, Review $review): bool
    // customer/admin_rental/super_admin with access
 public function create(User $user, Booking $booking): bool
    // customer owns completed booking with no existing review
 ```
 **RentalCompanyPolicy**
 ```php
 // Location: app/Policies/RentalCompanyPolicy.php
 public function view(User $user, RentalCompany $company): bool
    // admin_rental owner OR super_admin
 public function verify(User $user): bool
    // super_admin only
 public function update(User $user, RentalCompany $company): bool
    // Delegates to view()
 ```
 **Registration di AppServiceProvider**
 ```php
 // Location: app/Providers/AppServiceProvider.php
 protected $policies = [
    Vehicle::class => VehiclePolicy::class,
    Booking::class => BookingPolicy::class,
    Payment::class => PaymentPolicy::class,
    Promo::class => PromoPolicy::class,
    Review::class => ReviewPolicy::class,
    RentalCompany::class => RentalCompanyPolicy::class,
 ];
 ```
 ---
 ### 4. Controllers Refactoring
 #### AdminRental/VehicleController
 **Changes:**
 - ✅ Added `SlugService` dependency injection
 - ✅ Added `FileUploadService` dependency injection
 - ✅ Added `ActivityLogService` integration (prep for Tahap 10)
 - ✅ All CRUD methods use `$this->authorize()` checks
 - ✅ File upload with try-catch error handling
 - ✅ Dated subdirectory organization for uploads
 **Methods:**
 ```php
 public function __construct(
    private readonly SlugService $slugService,
    private readonly FileUploadService $fileUploadService,
    private readonly ActivityLogService $activityLogService,
 ) {}
 public function index(): View
 public function create(): View
 public function store(StoreVehicleRequest $request): RedirectResponse
 public function edit(Vehicle $vehicle): View
 public function update(UpdateVehicleRequest $request, Vehicle $vehicle): RedirectResponse
 public function destroy(Vehicle $vehicle): RedirectResponse
 public function destroyGalleryImage(VehicleImage $image): RedirectResponse
 ```
 #### Customer/BookingController
 **Changes:**
 - ✅ Added authorization checks
 - ✅ NotificationService integration (Tahap 10)
 - ✅ ActivityLogService integration (Tahap 10)
 #### Customer/PaymentController
 **Changes:**
 - ✅ Added `FileUploadService` dependency
 - ✅ File upload validation tightened
 - ✅ MIME type & size checking
 - ✅ Safe file deletion on update
 - ✅ Authorization checks on all methods
 - ✅ Notification/Logging (Tahap 10)
 #### Customer/ReviewController
 **Changes:**
 - ✅ Policy-based authorization replacing manual checks
 - ✅ Service injection ready for Tahap 10
 #### AdminRental/BookingController
 **Changes:**
 - ✅ Authorization on show/update methods
 - ✅ Service integration ready
 #### AdminRental/PaymentController
 **Changes:**
 - ✅ Authorization checks on all methods
 - ✅ Service integration for verify/reject
 #### AdminRental/PromoController
 **Changes:**
 - ✅ Policies on all CRUD methods
 - ✅ Service integration ready
 #### AdminRental/ReviewController
 **Changes:**
 - ✅ Authorization check on index
 #### AdminRental/CustomerController
 **Changes:**
 - ✅ Authorization check on index
 #### Customer/MyBookingController
 **Changes:**
 - ✅ Policy-based authorization
 ---
 ### 5. Form Validation Hardening
 #### Vehicle Validation (StoreVehicleRequest)
 ```php
 'thumbnail' => ['required', 'file', 'mimetypes:image/jpeg,image/png', 'max:4096'],
 'gallery_images.*' => ['nullable', 'file', 'mimetypes:image/jpeg,image/png', 'max:4096'],
 ```
 #### Payment Validation (UploadProofRequest)
 ```php
 'proof_file' => [
    'required',
    'file',
    'mimetypes:image/jpeg,image/png,application/pdf',
    'max:8192',
 ],
 ```
 #### Promo Validation (StorePromoRequest)
 ```php
 'title' => ['required', 'string', 'max:100'],
 'promo_code' => ['required', 'string', 'max:20', 'unique:promos'],
 'discount_value' => ['required', 'numeric', 'min:0'],
 ```
 ---
 ## Implementation Details
 ### SlugService Usage
 **Di VehicleController:**
 ```php
 $slug = $this->slugService->generateUnique(
    Vehicle::class,
    'slug',
    $validated['name']
 );
 $vehicle = Vehicle::create([
    ...$validated,
    'slug' => $slug,
 ]);
 ```
 **Di RentalCompany Model (Boot Event):**
 ```php
 protected static function boot(): void
 {
    parent::boot();
    static::creating(function (self $model): void {
        if (!$model->company_slug) {
            $slug = app(SlugService::class)->generateUnique(
                self::class,
                'company_slug',
                $model->company_name
            );
            $model->company_slug = $slug;
        }
    });
 }
 ```
 ### FileUploadService Usage
 **Store File:**
 ```php
 try {
    $path = $this->fileUploadService->storePublic(
        $request->file('thumbnail'),
        'vehicles/main'
    );
    // Path: "vehicles/main/2026/04/uuid.jpg"
 } catch (\Throwable $exception) {
    return back()->withInput()->with('error', 'Upload gagal');
 }
 ```
 **Delete File:**
 ```php
 $this->fileUploadService->deletePublic($vehicle->thumbnail);
 ```
 ### Authorization Usage
 **Via Policy:**
 ```php
 // Single action
 $this->authorize('view', $vehicle);
 // Class-level
 $this->authorize('create', Vehicle::class);
 // Custom gate
 $this->authorize('verify', $rentalCompany);
 ```
 ---
 ## Technical Architecture
 ### Folder Structure (After Tahap 9)
 ```
 app/
 ├── Services/
 │   ├── PromoService.php           (Existing)
 │   ├── SlugService.php            (New)
 │   ├── FileUploadService.php      (New)
 │   ├── NotificationService.php    (New - Tahap 10 prep)
 │   └── ActivityLogService.php     (New - Tahap 10 prep)
 ├── Policies/
 │   ├── VehiclePolicy.php
 │   ├── BookingPolicy.php
 │   ├── PaymentPolicy.php
 │   ├── PromoPolicy.php
 │   ├── ReviewPolicy.php
 │   └── RentalCompanyPolicy.php
 ├── Models/
 │   ├── User.php (Updated)
 │   ├── Vehicle.php (Updated)
 │   ├── Booking.php (Updated)
 │   ├── Payment.php (Updated)
 │   ├── Promo.php (Updated)
 │   ├── Review.php (Updated)
 │   ├── RentalCompany.php (Updated)
 │   ├── UserNotification.php       (New)
 │   └── ActivityLog.php            (New)
 ├── Http/
 │   ├── Requests/ (Validation tightened)
 │   └── Controllers/ (Refactored dengan service injection)
 └── Providers/
    └── AppServiceProvider.php     (Policies registered)
 database/
 ├── migrations/
 │   ├── 2026_04_23_xxxxxx_create_user_notifications_table.php
 │   └── 2026_04_23_xxxxxx_create_activity_logs_table.php
 └── seeders/ (Unchanged)
 ```
 ### Design Patterns
 #### 1. Service Layer Pattern
 Business logic abstracted from controllers:
 ```
 Controller → Service → Model → Database
 ```
 **Benefits:**
 - Reusability across controllers
 - Testability
 - Single responsibility
 - Easy to mock
 #### 2. Policy Pattern
 Authorization logic centralized:
 ```
 $this->authorize('action', Model) → Policy → User Role Check
 ```
 **Benefits:**
 - Consistent authorization
 - Maintainable permissions
 - Testable policies
 #### 3. Dependency Injection
 Constructor injection untuk semua services:
 ```php
 public function __construct(
    private readonly ServiceA $serviceA,
    private readonly ServiceB $serviceB,
 ) {}
 ```
 #### 4. Immutable Logging
 ActivityLog append-only (no updates):
 ```
 Created → Never Updated → Audit Trail Safe
 ```
 ---
 ## Database Relationships
 ```
 Users (1) ──→ (Many) UserNotifications
      (1) ──→ (Many) ActivityLogs
      (1) ──→ (1) RentalCompany
      (1) ──→ (Many) Bookings
 RentalCompany (1) ──→ (Many) Vehicles
              (1) ──→ (Many) Promos
              (1) ──→ (Many) Bookings
 Bookings (1) ──→ (1) Payment
       (1) ──→ (1) Review
       (1) ──→ (1) Vehicle
 Vehicles (1) ──→ (Many) VehicleImages
       (1) ──→ (Many) Bookings
 ```
 ---
 ## Validation Rules Summary
 ### Vehicle Upload
 - Format: JPEG, PNG
 - Size: Max 4MB per image
 - Required: Thumbnail
 - Optional: Gallery (multiple)
 ### Payment Upload
 - Format: JPEG, PNG, PDF
 - Size: Max 8MB
 - Required: File type check
 - Transaction: Atomic with DB update
 ### Promo Creation
 - Code: Unique, uppercase, max 20 chars
 - Title: Required, max 100 chars
 - Discount: Numeric, non-negative
 - Dates: End date >= Start date
 ---
 ## Error Handling
 ### FileUploadService
 ```php
 try {
    $path = $fileUploadService->storePublic($file, $dir);
 } catch (\Throwable $e) {
    // User-friendly error message
    return back()->with('error', 'Upload failed');
 }
 ```
 ### Authorization
 ```php
 try {
    $this->authorize('action', $model);
 } catch (AuthorizationException $e) {
    // Laravel handles: 403 Forbidden response
 }
 ```
 ### Validation
 ```php
 // FormRequest handles automatically
 // Returns back with errors on validation fail
 ```
 ---
 ## Performance Considerations
 1. **Slug Generation**: Single query per unique check (optimized)
 2. **File Upload**: UUID prevents lookups, dated dirs enable cleanup
 3. **Activity Logs**: Append-only (no locks), indexes on common queries
 4. **Policies**: Eager loading relationships to avoid N+1
 5. **Queries**: withCount, withSum untuk statistics tanpa extra queries
 ---
 ## Testing Checklist
 - [ ] SlugService generates unique slugs
 - [ ] SlugService handles collisions
 - [ ] FileUploadService stores with UUID naming
 - [ ] FileUploadService deletes safely
 - [ ] Policies correctly authorize actions
 - [ ] Services inject correctly in controllers
 - [ ] File validation rejects invalid types
 - [ ] File validation enforces size limits
 - [ ] RentalCompany auto-generates slug
 - [ ] Activity logs capture correctly (Tahap 10)
 - [ ] Notifications send correctly (Tahap 10)
 ---
 ## Tahap 9 Summary
 ✅ **COMPLETED:**
 - 4 Services (Promo, Slug, FileUpload, Notification/ActivityLog prep)
 - 6 Policies with consistent pattern
 - 8 Controllers refactored with service injection
 - 2 New models with migrations
 - Validation hardening
 - Authorization layer implementation
 ⏳ **NEXT (Tahap 10):**
 - Notification integration (8 triggers)
 - Activity logging integration (15+ actions)
 - Error pages & components
 - Report filtering enhancements
 - UI/UX polish
 ---
 ## Quick Reference
 ### Service Injection
 ```php
 use App\Services\SlugService;
 use App\Services\FileUploadService;
 public function __construct(
    private readonly SlugService $slugService,
    private readonly FileUploadService $fileUploadService,
 ) {}
 ```
 ### Authorization Check
 ```php
 $this->authorize('action', $model);
 $this->authorize('create', ModelClass::class);
 ```
 ### Slug Generation
 ```php
 $slug = $this->slugService->generateUnique(
    Vehicle::class, 'slug', $sourceName
 );
 ```
 ### File Upload
 ```php
 $path = $this->fileUploadService->storePublic(
    $request->file('field'), 'directory'
 );
 ```
 ---
 **Dokumentasi Tahap 9 Complete**  
 Untuk Tahap 10, lihat: `TAHAP_10_DOKUMENTASI.md`