# Story 8.2: Welcome Email (Account Created)

## Epic Reference
**Epic 8:** Email Notification System

## Dependencies
**Requires:** Story 8.1 (Email Infrastructure Setup) - base template, queue configuration, SMTP setup

## User Story
As a **new client**,
I want **to receive a welcome email with my login credentials**,
So that **I can access the platform**.

## Acceptance Criteria

### Trigger
- [x] Sent automatically on user creation by admin
- [x] Queued for performance (implements `ShouldQueue`)
- [x] Triggered via admin creation action (recommended approach per Technical Notes)

### Content
- [x] Personalized greeting (name/company)
- [x] "Your account has been created" message
- [x] Login credentials (email, password)
- [x] Login URL link with button
- [x] Brief platform introduction
- [x] Contact info for questions

### Language
- [x] Email in user's `preferred_language` field
- [x] Default to Arabic ('ar') if `preferred_language` is null
- [x] Arabic template
- [x] English template

### Design
- [x] Professional branding (inherits from base template in Story 8.1)
- [x] Call-to-action button: "Login Now" / "تسجيل الدخول"

## Technical Notes

### Prerequisites from Story 8.1
- Base email template with Libra branding (navy #0A1F44, gold #D4AF37)
- Queue configuration for async email delivery
- SMTP configuration via `.env`

### User Model Requirement
The User model requires a `preferred_language` field. If not already present, add:
- Migration: `$table->string('preferred_language', 2)->default('ar');`
- Fillable: Add `'preferred_language'` to `$fillable` array

### Files to Create

**Mailable Class:**
- `app/Mail/WelcomeEmail.php`

**View Templates:**
- `resources/views/emails/welcome/ar.blade.php` (Arabic)
- `resources/views/emails/welcome/en.blade.php` (English)

**Observer:**
- `app/Observers/UserObserver.php` (if not exists)
- Register in `AppServiceProvider` boot method

### Implementation

```php
// app/Mail/WelcomeEmail.php
class WelcomeEmail extends Mailable implements ShouldQueue
{
    use Queueable, SerializesModels;

    public function __construct(
        public User $user,
        public string $password
    ) {}

    public function envelope(): Envelope
    {
        return new Envelope(
            subject: $this->user->preferred_language === 'en'
                ? 'Welcome to Libra Law Firm'
                : 'مرحباً بك في مكتب ليبرا للمحاماة',
        );
    }

    public function content(): Content
    {
        return new Content(
            markdown: 'emails.welcome.' . ($this->user->preferred_language ?? 'ar'),
            with: [
                'loginUrl' => route('login'),
                'password' => $this->password,
            ],
        );
    }
}
```

```php
// app/Observers/UserObserver.php
class UserObserver
{
    public function created(User $user): void
    {
        // Only send if password was set (admin creation scenario)
        // The plain password must be passed from the creation context
    }
}
```

### Trigger Mechanism
The welcome email requires the plain-text password, which is only available at creation time. Options:
1. **Recommended:** Dispatch from the admin user creation action/controller after creating user
2. Alternative: Use a custom event `UserCreatedWithPassword` that carries both user and password

## Edge Cases

- **Missing `preferred_language`:** Default to Arabic ('ar')
- **Email delivery failure:** Handled by queue retry mechanism (Story 8.1)
- **Password in email:** This is intentional for admin-created accounts; password is shown once

## Testing Requirements

### Unit Tests
- [x] `WelcomeEmail` mailable contains correct subject for Arabic user
- [x] `WelcomeEmail` mailable contains correct subject for English user
- [x] `WelcomeEmail` uses correct template based on language
- [x] Default language is Arabic when `preferred_language` is null

### Feature Tests
- [x] Email is queued when user is created
- [x] Arabic template renders without errors
- [x] English template renders without errors
- [x] Email contains login URL
- [x] Email contains user's password
- [x] Email contains user's name

### Test Example
```php
use App\Mail\WelcomeEmail;
use App\Models\User;
use Illuminate\Support\Facades\Mail;

test('welcome email is sent when user is created', function () {
    Mail::fake();

    $user = User::factory()->create(['preferred_language' => 'ar']);

    Mail::to($user)->send(new WelcomeEmail($user, 'test-password'));

    Mail::assertQueued(WelcomeEmail::class, function ($mail) use ($user) {
        return $mail->user->id === $user->id;
    });
});

test('welcome email uses arabic template by default', function () {
    $user = User::factory()->create(['preferred_language' => null]);
    $mailable = new WelcomeEmail($user, 'password123');

    $mailable->assertSeeInHtml('تسجيل الدخول');
});
```

## Definition of Done
- [x] `WelcomeEmail` mailable class created
- [x] Arabic template (`emails/welcome/ar.blade.php`) created
- [x] English template (`emails/welcome/en.blade.php`) created
- [x] Email triggered on user creation by admin
- [x] Email is queued (not sent synchronously)
- [x] Credentials included in email
- [x] Login button links to correct URL
- [x] All tests pass
- [x] Code formatted with Pint

## Estimation
**Complexity:** Low | **Effort:** 2-3 hours

---

## Dev Agent Record

### Status
Ready for Review

### Agent Model Used
Claude Opus 4.5

### File List
- `app/Mail/WelcomeEmail.php` (created)
- `resources/views/emails/welcome/ar.blade.php` (created)
- `resources/views/emails/welcome/en.blade.php` (created)
- `app/Notifications/WelcomeAccountNotification.php` (modified)
- `tests/Feature/Admin/WelcomeEmailTest.php` (modified)

### Change Log
- Created `WelcomeEmail` mailable class implementing `ShouldQueue`
- Created Arabic email template with RTL support
- Created English email template
- Updated `WelcomeAccountNotification` to use `WelcomeEmail` mailable
- Updated tests to validate mailable behavior (21 tests, all passing)

### Completion Notes
- Implementation follows the recommended trigger mechanism (dispatch from admin creation action) as specified in Technical Notes
- Existing `WelcomeAccountNotification` was updated to return `WelcomeEmail` mailable, maintaining the existing notification pattern
- Both `preferred_language` field and translations were already present from previous stories
- All 21 welcome email tests pass, plus 71 client management tests pass

## QA Results

### Review Date: 2025-12-29

### Reviewed By: Quinn (Test Architect)

### Code Quality Assessment

**Overall: Excellent implementation.** The story has been implemented cleanly and professionally following Laravel best practices.

**Key Strengths:**
- Proper separation of concerns: `WelcomeEmail` mailable handles email content/structure, `WelcomeAccountNotification` wraps it for notification delivery
- Both classes implement `ShouldQueue` ensuring async delivery and not blocking user creation
- Locale handling is correctly defaulting to Arabic ('ar') when `preferred_language` is null
- Templates use correct RTL support for Arabic and appropriate branding
- Integration with admin client creation flows is clean and well-tested

**Code Architecture:**
- `WelcomeEmail.php:24` - Locale set in constructor, ensuring consistent serialization for queued jobs
- `WelcomeEmail.php:32,46` - Defensive null-coalescing ensures default language even if property lost during queue serialization
- `WelcomeAccountNotification.php:34-38` - Returns mailable directly to leverage Laravel's mailable-as-notification pattern

### Refactoring Performed

No refactoring required. The code is well-structured and follows established patterns in the codebase.

### Compliance Check

- Coding Standards: [✓] Class-based approach, proper namespacing, Pint compliant
- Project Structure: [✓] Files in correct locations per Technical Notes
- Testing Strategy: [✓] 21 tests covering unit, integration, and edge cases
- All ACs Met: [✓] All 17 acceptance criteria verified complete

### Requirements Traceability

| AC | Description | Test Coverage |
|----|-------------|---------------|
| Trigger - Auto send on creation | ✓ | `welcome email is queued when creating individual client`, `...company client` |
| Trigger - Implements ShouldQueue | ✓ | `welcome notification implements should queue interface`, `welcome email mailable implements should queue interface` |
| Trigger - Via admin creation | ✓ | Tests use admin client creation flows |
| Content - Personalized greeting | ✓ | `arabic template renders correctly`, `english template renders correctly` |
| Content - Account created message | ✓ | Template assertions |
| Content - Login credentials | ✓ | `welcome email contains correct password`, `passes correct data to view` |
| Content - Login URL | ✓ | `welcome email contains login url` |
| Content - Platform intro | ✓ | Templates include feature list |
| Content - Contact info | ✓ | Templates include contact prompt |
| Language - User's preferred_language | ✓ | `uses correct arabic template`, `uses correct english template` |
| Language - Default to Arabic | ✓ | `defaults to arabic when preferred_language is null` |
| Language - Arabic template | ✓ | `arabic template renders correctly` |
| Language - English template | ✓ | `english template renders correctly` |
| Design - Professional branding | ✓ | Uses base mail template |
| Design - CTA button | ✓ | `assertSeeInHtml('تسجيل الدخول')`, `assertSeeInHtml('Login Now')` |

### Improvements Checklist

- [x] All acceptance criteria implemented
- [x] All tests passing (21/21)
- [x] Code formatted with Pint
- [x] Proper queue implementation
- [x] Bilingual support complete
- [x] Integration with client creation flows verified

### Security Review

**Status: PASS**

- Plain-text password in email is intentional per story requirements (admin-created accounts, password shown once)
- Password is captured at creation time, not retrieved from database
- Email is queued, reducing attack surface on synchronous operations
- No sensitive data logged in AdminLog (password excluded from `new_values`)

### Performance Considerations

**Status: PASS**

- Email is queued via `ShouldQueue` - no blocking on HTTP request
- Uses Laravel's built-in queue serialization
- Template rendering is lightweight markdown

### Files Modified During Review

None - no modifications required.

### Gate Status

Gate: PASS → docs/qa/gates/8.2-welcome-email.yml

### Recommended Status

[✓ Ready for Done]

The implementation is complete, well-tested, and follows all project standards. All 21 tests pass, covering trigger mechanisms, language support, content validation, and queue behavior