# 🚀 Advanced Features - Complete Summary

## Overview

Implementasi lengkap fitur-fitur advanced untuk sistem agent meliputi:
1. WhatsApp Notifications
2. Advanced Agent Features  
3. QR Code Integration
4. Payment Gateway Integration (Skeleton)

---

## ✅ 1. WhatsApp Notifications

### File: `lib/WhatsAppNotification.class.php`

**Features:**
- ✅ Notifikasi saldo rendah ke agent
- ✅ Notifikasi topup request ke admin
- ✅ Notifikasi voucher expired ke customer
- ✅ Notifikasi topup approved
- ✅ Sales report via WhatsApp
- ✅ Broadcast message to customers

**Usage:**
```php
$notification = new WhatsAppNotification();

// Low balance alert
$notification->notifyLowBalance($agentId, $currentBalance, $threshold);

// Topup request to admin
$notification->notifyTopupRequest($agentId, $amount, $paymentProof);

// Voucher expired
$notification->notifyVoucherExpired($phone, $username, $profileName);

// Topup approved
$notification->notifyTopupApproved($agentId, $amount, $newBalance);

// Sales report
$notification->sendSalesReport($agentId, 'today'); // today, week, month

// Broadcast
$notification->broadcastToCustomers($agentId, $message);
```

---

## ✅ 2. Advanced Agent Features

### New WhatsApp Commands

#### TOPUP Command
```
TOPUP 100000
```
**Response:**
```
✅ REQUEST TOPUP DIKIRIM

Jumlah: Rp 100,000

━━━━━━━━━━━━━━━━━━━━
Silakan transfer ke:
BCA: 1234567890
a.n. Nama Pemilik
...
```

#### LAPORAN Command
```
LAPORAN TODAY
LAPORAN WEEK
LAPORAN MONTH
```
**Response:**
```
📊 LAPORAN PENJUALAN
Hari Ini

Agent: John Doe
Kode: AG0001

━━━━━━━━━━━━━━━━━━━━

📈 Statistik:
• Voucher Terjual: 50
• Total Penjualan: Rp 150,000
• Total Profit: Rp 50,000

📋 Per Profile:
• 3JAM: 30 voucher
• 1HARI: 20 voucher
...
```

#### BROADCAST Command
```
BROADCAST Promo hari ini! Diskon 20%
```
**Response:**
```
✅ BROADCAST TERKIRIM

Total Customer: 100
Terkirim: 98
Gagal: 2
```

---

## ✅ 3. QR Code Integration

### File: `lib/QRCodeGenerator.class.php`

**Features:**
- ✅ Generate QR code untuk voucher
- ✅ Auto-login via QR scan
- ✅ QR code di modal popup
- ✅ QR code di print voucher

**Implementation:**

#### In Modal Popup
```javascript
// QR code automatically generated in voucher cards
<img src="https://chart.googleapis.com/chart?chs=150x150&cht=qr&chl=..." 
     alt="QR Code" class="qr-code-image">
```

#### In Print
```javascript
// QR code included in print voucher
<img src="${qrUrl}" width="150" height="150">
<div>Scan untuk login otomatis</div>
```

**Usage:**
```php
$qr = new QRCodeGenerator();

// Generate QR URL
$qrUrl = $qr->generateVoucherQR($username, $password, $loginUrl);

// Generate QR as data URL (base64)
$dataUrl = $qr->generateQRDataURL($username, $password);

// Save QR to file
$qr->saveQRCode($username, $password, $loginUrl, $filename);

// Generate HTML img tag
$imgTag = $qr->generateQRImageTag($username, $password, $loginUrl, 200);

// Multiple QR codes
$qrCodes = $qr->generateMultipleQR($vouchers, $loginUrlTemplate);
```

---

## ⏳ 4. Payment Gateway Integration (Skeleton)

### File: `lib/PaymentGateway.class.php`

**Supported Gateways:**
- ⏳ Midtrans (Skeleton ready)
- ⏳ Xendit (Skeleton ready)

**Features:**
- ✅ Create payment for topup
- ✅ Handle payment callback/webhook
- ✅ Auto topup after payment
- ✅ Send notification after payment

**Usage:**
```php
$payment = new PaymentGateway('midtrans'); // or 'xendit'

// Create payment
$result = $payment->createTopupPayment($agentId, $amount);
// Returns: snap_token, redirect_url

// Handle callback (in webhook endpoint)
$payment->handleCallback($callbackData);
// Auto process: update payment, topup balance, send notification
```

**Configuration Required:**
```sql
-- Midtrans
payment_midtrans_server_key
payment_midtrans_client_key
payment_midtrans_environment (sandbox/production)

-- Xendit
payment_xendit_api_key
payment_xendit_callback_token
```

**Database:**
```sql
-- Table: payment_records
- order_id (unique)
- agent_id
- amount
- gateway (midtrans/xendit)
- status (pending/paid/failed/expired)
- created_at, paid_at
```

---

## 📁 Files Created/Modified

### New Files
1. ✅ `lib/WhatsAppNotification.class.php` - Notification system
2. ✅ `lib/QRCodeGenerator.class.php` - QR code generation
3. ✅ `lib/PaymentGateway.class.php` - Payment integration
4. ✅ `database/payment_gateway_tables.sql` - Payment tables

### Modified Files
1. ✅ `api/whatsapp_agent_webhook.php` - Added new commands
2. ✅ `agent/dashboard.php` - Added QR code in modal & print
3. ✅ `agent/agent.css` - Added QR code styles

---

## 🧪 Testing Guide

### Test WhatsApp Notifications

```php
// Test low balance notification
$notification = new WhatsAppNotification();
$notification->notifyLowBalance(1, 5000, 10000);

// Test topup request
$notification->notifyTopupRequest(1, 100000);

// Test sales report
$notification->sendSalesReport(1, 'today');

// Test broadcast
$notification->broadcastToCustomers(1, 'Test broadcast message');
```

### Test WhatsApp Commands

```
# Agent commands
TOPUP 100000
LAPORAN TODAY
LAPORAN WEEK
BROADCAST Promo hari ini!

# Check response in WhatsApp
```

### Test QR Code

1. Generate voucher via agent dashboard
2. Check modal popup - QR code should appear
3. Click print - QR code should be in print preview
4. Scan QR code with phone - should auto-login

### Test Payment Gateway (Sandbox)

```php
// Create test payment
$payment = new PaymentGateway('midtrans');
$result = $payment->createTopupPayment(1, 100000);

// Get snap_token
$snapToken = $result['snap_token'];

// Use Midtrans Snap.js to process payment
// After payment, webhook will auto-process
```

---

## 🔧 Configuration

### WhatsApp Notifications

Already configured via `agent-admin/whatsapp_agent_settings.php`

### QR Code

No configuration needed. Uses Google Charts API (free, no API key required).

### Payment Gateway

**Midtrans:**
1. Register at https://midtrans.com
2. Get Server Key & Client Key
3. Add to `agent_settings` table
4. Set webhook URL: `http://your-domain/api/payment_callback.php`

**Xendit:**
1. Register at https://xendit.co
2. Get API Key
3. Add to `agent_settings` table
4. Set webhook URL: `http://your-domain/api/payment_callback.php`

---

## 📊 Database Updates

Run these SQL files:
```sql
-- Payment gateway tables
source database/payment_gateway_tables.sql;
```

---

## 🎯 Usage Examples

### Scenario 1: Agent Low Balance

```
1. Agent balance < threshold (e.g., Rp 10,000)
2. System auto-send WhatsApp notification
3. Agent receives: "⚠️ PERINGATAN SALDO RENDAH"
4. Agent replies: "TOPUP 100000"
5. System creates topup request
6. Admin receives notification
7. Admin approves via admin panel
8. System auto-topup balance
9. Agent receives: "✅ TOPUP BERHASIL"
```

### Scenario 2: Generate Voucher with QR

```
1. Agent: "GEN 3JAM 5"
2. System generates 5 vouchers
3. Modal popup shows vouchers with QR codes
4. Agent clicks "Print"
5. Print preview shows vouchers with QR codes
6. Customer scans QR code
7. Auto-login to WiFi
```

### Scenario 3: Sales Report

```
1. Agent: "LAPORAN WEEK"
2. System calculates weekly stats
3. Agent receives detailed report:
   - Total vouchers sold
   - Total sales amount
   - Total profit
   - Breakdown by profile
   - Current balance
```

### Scenario 4: Broadcast Promo

```
1. Agent: "BROADCAST Promo hari ini! Diskon 20%"
2. System gets all customers who bought from agent
3. System sends message to all customers
4. Agent receives confirmation:
   - Total customers: 100
   - Sent: 98
   - Failed: 2
```

### Scenario 5: Auto Payment

```
1. Agent requests topup via payment gateway
2. System creates payment link
3. Agent pays via Midtrans/Xendit
4. Payment gateway sends webhook
5. System auto-processes:
   - Update payment status
   - Topup agent balance
   - Send WhatsApp notification
6. Agent receives: "✅ TOPUP BERHASIL"
```

---

## 🔮 Future Enhancements

### Phase 1 (Completed) ✅
- WhatsApp Notifications
- Advanced Agent Commands
- QR Code Integration
- Payment Gateway Skeleton

### Phase 2 (Planned)
- [ ] Payment gateway UI in admin panel
- [ ] Payment history page
- [ ] Refund system
- [ ] Multiple payment methods
- [ ] Installment payment

### Phase 3 (Planned)
- [ ] Customer portal
- [ ] Loyalty program
- [ ] Referral system
- [ ] Analytics dashboard
- [ ] Mobile app

---

## 📞 Support

### Common Issues

**Q: Notification tidak terkirim?**  
A: Cek WhatsApp Gateway aktif dan webhook configured.

**Q: QR code tidak muncul?**  
A: Cek internet connection. QR code uses Google Charts API.

**Q: Payment gateway error?**  
A: Cek API keys configured correctly. Test in sandbox first.

**Q: Broadcast gagal?**  
A: Cek customer phone numbers valid. Add delay between messages.

---

## 📚 Documentation

- `WHATSAPP_AGENT_COMMANDS.md` - WhatsApp commands guide
- `WHATSAPP_MESSAGE_TEMPLATES.md` - Message templates guide
- `ADVANCED_FEATURES_SUMMARY.md` - This file

---

**Version:** 2.0  
**Last Updated:** November 2024  
**Status:** ✅ Production Ready (except Payment Gateway - needs configuration)

---

**All features implemented and ready to use!** 🎉
