# Wise Payment Integration - Implementation Summary

## ✅ What Has Been Implemented

### 1. Database Changes
- **Migration created and run**: `add_wise_fields_to_payments_table`
- **New columns added to `payments` table**:
  - `payment_provider` (default: 'stripe') - Identifies payment source
  - `wise_payment_id` - Stores Wise transfer ID
  - `wise_session_id` - Stores Wise session identifier

### 2. Backend Components

#### **WiseController** (`app/Http/Controllers/WiseController.php`)
- `createPaymentSession()` - Creates Wise payment and returns payment URL
- `handleWebhook()` - Processes Wise webhook events
- `validatePayment()` - Validates payment status manually
- Webhook signature verification for security

#### **Routes** (`routes/web.php`)
- `POST /create-wise-payment` - Create new Wise payment
- `POST /wise/webhook` - Receive Wise webhooks
- `GET /wise/validate-payment` - Check payment status
- Updated `/success` route to handle both Stripe and Wise

#### **Payment Model** (`app/Models/Payment.php`)
- Added Wise fields to `$fillable` array

### 3. Frontend Components

#### **Card Selection** (`resources/js/pages/cards/cardSelection.vue`)
- Split payment buttons: Users can choose "Stripe" or "Wise"
- `redirectToWisePayment()` function to handle Wise payment flow
- Visual distinction: Gold button for Stripe, Dark blue for Wise

#### **Pending Page** (`resources/js/pages/payments/Pending.vue`)
- New page for processing payments (especially Wise)
- Auto-polls payment status every 10 seconds
- Shows progress and provider information
- User-friendly interface with refresh option

### 4. Configuration
- `.env.example` updated with Wise configuration variables
- Comprehensive setup documentation in `WISE_SETUP.md`

## 🔄 Payment Flow

```
User selects paid option (6 or 18 cards)
    ↓
User clicks "Wise" button
    ↓
Frontend calls POST /create-wise-payment
    ↓
Backend creates Wise transfer & saves to DB (status: pending)
    ↓
User redirected to Wise payment page
    ↓
User completes payment on Wise
    ↓
Wise sends webhook to POST /wise/webhook
    ↓
Backend updates payment status to 'succeeded'
    ↓
User returns to /success page
    ↓
Success page validates payment
    ↓
If succeeded → User can draw cards
If pending → Show Pending page with auto-refresh
```

## 📋 Next Steps to Go Live

### 1. Set Up Wise Account
```bash path=null start=null
# Create Wise Business account at https://wise.com
# Navigate to Settings → API tokens
# Create API token and get Profile ID
```

### 2. Configure Environment Variables
Add to your `.env` file:
```bash path=null start=null
WISE_API_URL=https://api.wise.com
WISE_API_TOKEN=your_api_token_here
WISE_PROFILE_ID=your_profile_id
WISE_WEBHOOK_SECRET=your_webhook_secret
WISE_RECIPIENT_NAME="Your Business Name"
WISE_RECIPIENT_EMAIL=payments@yourbusiness.com
```

### 3. Set Up Webhooks
1. Go to Wise Settings → Webhooks
2. Create webhook: `https://yourdomain.com/wise/webhook`
3. Subscribe to: `transfers#state-change` and `balance_credit`
4. Copy webhook secret to `.env`

### 4. Testing
For testing without real Wise account:
```bash path=null start=null
# Use sandbox environment
WISE_API_URL=https://sandbox.transferwise.tech

# Or test by manually updating payment status:
php artisan tinker
>>> $payment = App\Models\Payment::where('client_session_id', 'YOUR-UUID')->first();
>>> $payment->update(['status' => 'succeeded']);
```

### 5. Make Webhook Accessible
Ensure your webhook endpoint is publicly accessible:
- Remove CSRF protection for `/wise/webhook` route (already handled in controller)
- Make sure your server accepts POST requests on this route
- Test with Wise's webhook testing tool

## 🎨 User Interface

### Card Selection Screen
- **Free Option**: Single "Commencer" button
- **Paid Options (6 & 18 cards)**: 
  - Split into two buttons side-by-side
  - Left button (Gold): "Stripe"
  - Right button (Dark Blue): "Wise"

### Payment Processing
- **Stripe**: Redirects to Stripe Checkout (existing flow)
- **Wise**: Redirects to Wise payment page
  - If payment pending: Shows Pending page with auto-refresh
  - If payment succeeded: Shows Success page

## 🔒 Security Features

1. **Webhook Signature Verification**: HMAC-SHA256 validation
2. **Payment Status Checks**: Before allowing card draws
3. **One-time Use**: Cards can only be drawn once per payment
4. **Provider Tracking**: Each payment tagged with provider

## 📊 Database Schema

```sql
payments table:
- id
- amount
- currency
- stripe_session_id (existing)
- client_session_id (existing)
- draw_count
- status (pending/succeeded/failed/refunded)
- cards
- appointment_date
- payment_provider (NEW: 'stripe' or 'wise')
- wise_payment_id (NEW)
- wise_session_id (NEW)
- created_at
- updated_at
```

## 🐛 Troubleshooting

### Webhook Not Working
```bash path=null start=null
# Check Laravel logs
tail -f storage/logs/laravel.log

# Test webhook manually
curl -X POST https://yourdomain.com/wise/webhook \
  -H "Content-Type: application/json" \
  -H "X-Signature-SHA256: test" \
  -d '{"event_type":"test"}'
```

### Payment Status Not Updating
```bash path=null start=null
# Check payment in database
php artisan tinker
>>> App\Models\Payment::where('payment_provider', 'wise')->latest()->get();
```

## 📚 Documentation

- **Setup Guide**: See `WISE_SETUP.md` for detailed configuration
- **Wise API Docs**: https://docs.wise.com/api-docs/
- **Wise Sandbox**: https://sandbox.transferwise.tech

## 🎯 Key Files Modified/Created

### Backend
- ✅ `app/Http/Controllers/WiseController.php` (NEW)
- ✅ `app/Models/Payment.php` (MODIFIED)
- ✅ `routes/web.php` (MODIFIED)
- ✅ `database/migrations/2025_10_14_130637_add_wise_fields_to_payments_table.php` (NEW)

### Frontend
- ✅ `resources/js/pages/cards/cardSelection.vue` (MODIFIED)
- ✅ `resources/js/pages/payments/Pending.vue` (NEW)

### Configuration
- ✅ `.env.example` (MODIFIED)
- ✅ `WISE_SETUP.md` (NEW)
- ✅ `WISE_IMPLEMENTATION_SUMMARY.md` (NEW - this file)

## ✨ Features

- ✅ Dual payment provider support (Stripe + Wise)
- ✅ Webhook integration for automatic status updates
- ✅ Payment status validation before card drawing
- ✅ Pending payment page with auto-refresh
- ✅ Secure webhook signature verification
- ✅ User-friendly payment provider selection
- ✅ Comprehensive error handling
- ✅ Support for both sandbox and production environments

---

**Status**: ✅ Implementation Complete - Ready for Configuration & Testing