# 🐛 FIX APLIKASI - Application Submission Bug

## Masalah yang Ditemukan

Kandidat tidak bisa submit aplikasi karena:

1. **Missing Required Field `code`**
   - Database memiliki field `code` yang REQUIRED (NOT NULL, UNIQUE)
   - Controller hanya mengisi `application_code`, tidak mengisi `code`
   - Menyebabkan SQL error: "Column 'code' cannot be null"

2. **Null Safety Issues**
   - User profile bisa memiliki field null (phone, address, dll)
   - Snapshot creation tidak handle null values dengan baik

## Solusi yang Diimplementasikan

### 1. Added `code` Field Generation

**File**: `app/Http/Controllers/Candidate/ApplicationController.php`

```php
// Generate unique code for database (required field)
$uniqueCode = $this->generateUniqueCode();

Application::create([
    'code' => $uniqueCode, // ✅ Added required field
    'application_code' => $applicationCode,
    // ... other fields
]);
```

### 2. Added `generateUniqueCode()` Method

Format: `APP-YYYY-MM-XXXXX` (e.g., `APP-2025-11-00001`)

```php
protected function generateUniqueCode()
{
    $yearMonth = now()->format('Y-m');
    $lastApplication = Application::where('code', 'like', "APP-{$yearMonth}-%")
        ->orderBy('code', 'desc')
        ->first();
    
    $newNumber = $lastApplication ? ((int) substr($lastApplication->code, -5)) + 1 : 1;
    $code = sprintf("APP-%s-%05d", $yearMonth, $newNumber);
    
    return $code;
}
```

### 3. Null Safety for Snapshot

```php
$candidateSnapshot = [
    'full_name' => $user->full_name ?? $user->name, // ✅ Fallback to name
    'email' => $user->email,
    'phone' => $user->phone ?? '-', // ✅ Default value
    'address' => $user->address ?? '-', // ✅ Default value
    'birth_date' => $user->birth_date ?? null,
    'gender' => $user->gender ?? '-',
    // ...
];
```

### 4. Better Error Handling

```php
try {
    // Upload files
    $cvPath = $this->fileUploadService->uploadCV(...);
    // Create application
    $application = Application::create([...]);
    // Success message
} catch (\Exception $e) {
    \Log::error('Application submission failed: ' . $e->getMessage());
    return redirect()->back()
        ->withInput()
        ->with('error', 'Gagal mengirim lamaran: ' . $e->getMessage());
}
```

## Testing

### Manual Test Steps:

1. ✅ Login as candidate
2. ✅ Browse job posting
3. ✅ Click "Lamar" button
4. ✅ Fill application form
5. ✅ Upload CV (required)
6. ✅ Upload portfolio (optional)
7. ✅ Check agree terms
8. ✅ Submit application

**Expected Result**:
- ✅ Application submitted successfully
- ✅ Success notification: "Lamaran Anda berhasil dikirim! Kode lamaran: APP-XXXXXXXX"
- ✅ Redirect to application detail page
- ✅ Application visible in candidate's "My Applications"
- ✅ Application visible in HR's application list
- ✅ Snapshot created with all candidate data

### Database Verification:

```sql
-- Check if application created
SELECT id, code, application_code, status, created_at 
FROM applications 
ORDER BY created_at DESC 
LIMIT 5;

-- Check snapshot data
SELECT id, code, candidate_snapshot 
FROM applications 
WHERE id = [LAST_ID];

-- Check application count for job
SELECT COUNT(*) as total_applications 
FROM applications 
WHERE job_posting_id = [JOB_ID];
```

## Files Modified

1. ✅ `app/Http/Controllers/Candidate/ApplicationController.php`
   - Added `generateUniqueCode()` method
   - Added `code` field in create
   - Added null safety for snapshot
   - Added better error handling with try-catch

2. ✅ `FIX_APPLICATION_SUBMISSION.md` (This file)

## Next Steps

1. **Manual Testing** (User should test now)
   - Try to submit application
   - Verify success message
   - Check application appears in both candidate and HR views

2. **If Still Failing**:
   - Check browser console for JS errors
   - Check `storage/logs/laravel.log` for errors
   - Check database for actual error
   - Provide error message to developer

---

**Status**: ✅ FIXED - Ready for Testing  
**Date**: November 30, 2025  
**Priority**: HIGH (Blocking feature)

