# Prescription Modal Download Feature

## Overview
This enhancement adds a modal-based prescription download functionality to the Doccure WordPress theme with full multilingual support.

## Features

### 1. Modal Interface
- **Interactive Modal**: Clicking "Download Prescription" now opens a modal instead of direct download
- **Preview Functionality**: Shows prescription details before download
- **Loading States**: Displays loading indicators during content generation
- **Professional UI**: Clean, responsive design matching the theme

### 2. Download Options
- **PDF Download**: Direct PDF download with proper headers
- **Print Function**: Print prescription directly from browser
- **Multiple Formats**: Extensible for additional formats

### 3. Multilingual Support
- **Translation Ready**: All strings use WordPress translation functions
- **RTL Support**: Right-to-left language support included
- **Dynamic Text**: JavaScript strings are localized for translation
- **Fallback Text**: Default English text when translations unavailable

## Files Modified/Created

### Modified Files
- `wp-content/plugins/doccure/init.php`
  - Updated download buttons to trigger modal
  - Added AJAX handlers for modal functionality
  - Added script and style enqueuing

### New Files
- `wp-content/plugins/doccure/assets/js/prescription-modal.js`
  - Modal interaction logic
  - AJAX communication
  - Download and print functionality
  - Multilingual support integration

- `wp-content/plugins/doccure/assets/css/prescription-modal.css`
  - Modal styling
  - Responsive design
  - RTL support
  - Loading animations

## How It Works

### 1. User Interaction
1. User clicks "Download Prescription" button
2. Modal opens with loading state
3. AJAX request fetches prescription details
4. Preview content displays in modal
5. User can download PDF or print

### 2. AJAX Handlers
- `doccure_get_prescription_modal_content`: Fetches prescription preview
- `doccure_download_prescription_pdf`: Generates download URL
- `doccure_download_prescription_pdf_direct`: Handles direct PDF download

### 3. Security Features
- Nonce verification for all AJAX requests
- User permission checks
- Input sanitization
- XSS protection

## Multilingual Implementation

### PHP Strings
```php
esc_html__('Download Prescription', 'doccure_core')
esc_html__('Generating prescription PDF...', 'doccure_core')
esc_html__('Download PDF', 'doccure_core')
esc_html__('Print', 'doccure_core')
```

### JavaScript Localization
```php
wp_localize_script('doccure-prescription-modal', 'doccure_ajax_obj', array(
    'error_message' => esc_html__('Error loading prescription details', 'doccure_core'),
    'download_success' => esc_html__('Prescription downloaded successfully!', 'doccure_core'),
    // ... more strings
));
```

### RTL Support
```css
.rtl .prescription-details .row {
    direction: rtl;
}

.rtl .prescription-medicines ul {
    padding-right: 20px;
    padding-left: 0;
}
```

## Usage

### For Users
1. Navigate to appointment details
2. Click "Download Prescription" button
3. Modal opens with prescription preview
4. Choose "Download PDF" or "Print"
5. File downloads or print dialog opens

### For Developers
The modal can be extended by:
- Adding new download formats
- Customizing modal content
- Adding additional actions
- Implementing custom styling

## Browser Compatibility
- Chrome 60+
- Firefox 55+
- Safari 12+
- Edge 79+
- Mobile browsers supported

## Dependencies
- jQuery (already included in theme)
- Bootstrap Modal (already included in theme)
- DomPDF (already included in plugin)

## Performance
- Lazy loading of prescription content
- Optimized AJAX requests
- Minimal CSS and JS footprint
- Efficient PDF generation

## Security Considerations
- All AJAX endpoints verify nonces
- User permissions checked before access
- Input sanitization on all data
- XSS protection through proper escaping
- CSRF protection via WordPress nonces

## Troubleshooting

### Common Issues
1. **Modal not opening**: Check if jQuery and Bootstrap are loaded
2. **PDF not downloading**: Verify DomPDF library is available
3. **Translation not working**: Ensure translation files are properly loaded
4. **RTL not working**: Check if RTL CSS is being applied

### Debug Mode
Enable WordPress debug mode to see detailed error messages:
```php
define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);
```

## Future Enhancements
- Email prescription functionality
- Multiple prescription formats (DOC, TXT)
- Prescription sharing via social media
- Offline prescription storage
- Advanced prescription templates