# Payment Methods Feature Documentation

This document explains the implementation of multiple payment methods for the StoreWeb e-commerce platform, specifically tailored for Libya.

## Overview

The checkout process has been enhanced to support multiple payment methods commonly used in Libya, providing customers with flexible payment options.

## Payment Methods Implemented

### 1. Cash on Delivery (الدفع عند الاستلام)
- Traditional payment method where customers pay when they receive their order
- No additional information required
- Most common and trusted method in Libya

### 2. Bank Transfer (تحويل بنكي)
- Customers can transfer money directly to the store's bank account
- Supports major Libyan banks:
  - Libya Central Bank (البنك المركزي الليبي)
  - National Commercial Bank (البنك التجاري الوطني)
  - Agricultural Bank (البنك الزراعي)
  - Development Bank (بنك التنمية)
  - Foreign Bank (البنك الخارجي)
  - Housing Bank (بنك الإسكان)
  - Investment Bank (البنك الاستثماري)
  - United Bank (البنك المتحدة)
  - Savings Bank (بنك التوفير)

### 3. Mobile Payment (دفع عبر الهاتف)
- Digital payment through mobile networks
- Supports major Libyan mobile networks:
  - Libyana (ليبيانا)
  - Madar (مدار)
  - Al-Jeel Phone (جيل فون)
- Requires mobile number input

### 4. Credit Card (بطاقة ائتمان)
- Traditional credit card payments
- Collects card number, expiry date, and CVV
- Note: This is a frontend implementation only - actual payment processing would require integration with a payment gateway

## Implementation Details

### Files Modified
1. [cart/checkout.php](file:///c%3A/xampp\htdocs\storeweb\cart\checkout.php) - Added payment method selection and forms
2. [storeweb.sql](file:///c%3A/xampp\htdocs\storeweb\storeweb.sql) - Updated database schema to include payment_method column
3. [assets/css/style.css](file:///c%3A/xampp\htdocs\storeweb\assets\css\style.css) - Added styling for payment method elements

### Key Features
- Dynamic form fields that appear based on selected payment method
- Client-side validation for required payment information
- Arabic labels for Libyan customers
- Secure data handling with input sanitization
- Database storage of payment method information

### Security Considerations
- All input data is sanitized using the existing `sanitizeInput()` function
- Payment method information is stored in the database for order tracking
- No actual payment processing is implemented (would require integration with payment gateways)

## Technical Implementation

### Database Changes
```sql
ALTER TABLE `orders` ADD `payment_method` varchar(255) DEFAULT NULL;
```

### Frontend Implementation
- Payment method selection dropdown
- Dynamic form fields using JavaScript
- Client-side validation
- Responsive design for all device sizes

### JavaScript Features
```javascript
// Payment method selection logic
document.addEventListener('DOMContentLoaded', function() {
    const paymentMethodSelect = document.getElementById('payment_method');
    
    paymentMethodSelect.addEventListener('change', function() {
        // Show/hide payment details based on selection
    });
});
```

## Usage Instructions

1. Customer proceeds to checkout
2. Customer fills in shipping address
3. Customer selects preferred payment method from dropdown
4. Additional payment details appear based on selection:
   - Bank Transfer: Select bank from list
   - Mobile Payment: Select network and enter mobile number
   - Credit Card: Enter card details
5. Customer places order
6. Payment method is stored with the order for tracking

## Future Enhancements

1. Integration with actual payment gateways
2. Payment status tracking
3. Receipt generation
4. Refund processing
5. Multi-currency support for Libyan Dinar (LYD)

## Testing

The implementation has been tested with:
- All payment method selections
- Form validation
- Database storage
- Responsive design on different screen sizes
- Arabic language display