# Settings Page AJAX Implementation

## ✅ Changes Implemented

### 1. **New SettingsManager Class** (`src/Core/SettingsManager.php`)
- Handles settings storage via custom WordPress option
- Provides AJAX endpoints for:
  - `ghl_crm_save_settings` - Save settings
  - `ghl_crm_get_settings` - Retrieve settings
  - `ghl_crm_test_connection` - Test GHL API connection
- Implements proper nonce verification and capability checks
- Returns JSON responses with success/error messages

### 2. **Updated Settings Template** (`templates/admin/settings.php`)
- Removed WordPress Settings API (options.php)
- Changed to AJAX-based form submission
- Added dynamic notification area
- Updated form field names to match AJAX handler
- Added required attributes for validation
- Displays current settings from SettingsManager

### 3. **Enhanced JavaScript** (`assets/admin/js/settings.js`)
- Complete rewrite for AJAX functionality
- Save settings without page reload
- Test connection with live feedback
- Show inline success/error notifications
- Loading states for buttons with spinners
- Auto-hide notifications after 5 seconds

### 4. **Loader Integration** (`src/Core/Loader.php`)
- Added SettingsManager to components array
- Automatically initialized with other core components

## 🎯 Benefits

### **Better User Experience:**
- ✅ No page reloads
- ✅ Instant feedback
- ✅ Loading states
- ✅ Clean notifications

### **Better Code Architecture:**
- ✅ Separation of concerns
- ✅ RESTful AJAX endpoints
- ✅ Centralized settings management
- ✅ Easy to extend

### **Security:**
- ✅ Nonce verification
- ✅ Capability checks
- ✅ Input sanitization
- ✅ Proper escaping

## 📝 How It Works

### **Save Settings Flow:**
1. User fills form and clicks "Save Settings"
2. JavaScript prevents default form submission
3. AJAX request sent to `ghl_crm_save_settings`
4. SettingsManager validates and saves settings
5. Success/error message displayed
6. Button returns to normal state

### **Test Connection Flow:**
1. User clicks "Test API Connection"
2. AJAX request sent to `ghl_crm_test_connection`
3. SettingsManager makes API call to GHL
4. Response displayed with location name if successful
5. Error details shown if connection fails

## 🔄 Settings Storage

Settings are stored as a single WordPress option:
```php
Option Name: 'ghl_crm_settings'
Data Structure: [
    'api_token'   => 'token',
    'location_id' => 'location_id',
    'api_version' => '2021-07-28',
    'updated_at'  => '2025-01-16 12:00:00'
]
```

## 🚀 Next Steps

You can now:
1. Test the settings page
2. Save API credentials
3. Test the connection
4. Extend SettingsManager for additional settings
5. Add more AJAX endpoints as needed

## 💡 Usage Examples

### Get a setting value:
```php
$settings_manager = \GHL_CRM\Core\SettingsManager::get_instance();
$api_token = $settings_manager->get_setting('api_token');
```

### Get all settings:
```php
$settings = $settings_manager->get_settings_array();
```

### Add new AJAX endpoint:
```php
// In SettingsManager::init()
add_action('wp_ajax_ghl_crm_my_action', [$this, 'my_action']);

// New method
public function my_action(): void {
    check_ajax_referer('ghl_crm_settings_nonce', 'nonce');
    // Your logic here
    wp_send_json_success(['data' => 'value']);
}
```

---

**Status: ✅ Ready for Testing**
