# Campaign CDN Support - Complete

## Summary
Campaign images now support CDN URLs just like store images. Admins can choose to use either local uploaded images or external CDN URLs.

## Changes Made

### 1. Admin Panel - Checkbox Fixed
**Files Modified:**
- `admin/views/edit.campaign.view.php` - Fixed checkbox visibility with inline styles
- `admin/views/new.campaign.view.php` - Fixed checkbox visibility with inline styles

**What was wrong:** Bootstrap `custom-control-switch` CSS wasn't loading, making checkbox invisible

**Fix:** Replaced with simple styled checkbox using inline styles:
```html
<input type="checkbox" id="campaign_use_cdn" name="campaign_use_cdn" value="1"
       style="width: 20px; height: 20px; margin-right: 10px; cursor: pointer;">
```

### 2. Frontend Display - CDN Support
**Files Modified:**
- `views/single-store.view.php` - Updated to use `getImageUrl()`

**Already Using CDN:**
- `sections/campaigns.php` - Already using `getImageUrl()`
- `sections/views/sidebar-campaigns.view.php` - Already using `getImageUrl()`

**Function Used:**
```php
getImageUrl($campaign['campaign_image_cdn_url'], $campaign['campaign_use_cdn'], $campaign['campaign_image'])
```

### 3. Database Fields
Campaign table already has these fields (from previous work):
- `campaign_image_cdn_url` (VARCHAR 500) - External CDN URL
- `campaign_use_cdn` (TINYINT 1) - Enable/disable CDN (1 = use CDN, 0 = use local)

### 4. Backend Processing
**Already Working:**
- `admin/controller/edit_campaign.php` - Handles CDN fields
- `admin/controller/new_campaign.php` - Handles CDN fields

## How It Works

### Admin Panel:
1. Upload a local image OR enter a CDN URL
2. Check "Use CDN Image" to use the CDN URL instead of local image
3. If unchecked, local image is used (default behavior)

### Frontend Display:
- `getImageUrl()` function checks if CDN is enabled
- If enabled and URL is valid, returns CDN URL
- Otherwise returns local image path
- Fallback to placeholder if nothing is set

## Testing

### Test Campaign CDN:
1. Go to admin panel → Campaigns → Edit any campaign
2. Enter a CDN URL in "CDN Image URL" field
3. Check the "Use CDN Image" checkbox
4. Save the campaign
5. View the campaign on frontend (homepage, store page, or sidebar)
6. Image should load from CDN URL

### Verify Checkbox:
- Checkbox should now be clearly visible (20x20px)
- Clicking should toggle the checkmark
- Label text should be bold and clickable

## All Campaign Display Locations

✓ Homepage campaigns section (`sections/campaigns.php`)
✓ Store page campaigns (`views/single-store.view.php`)
✓ Sidebar campaigns (`sections/views/sidebar-campaigns.view.php`)

All locations now support CDN images via `getImageUrl()` function.

## Related Files

### Core Functions:
- `functions.php` - Contains `getImageUrl()` function
- `functions.php` - Contains campaign query functions (already include CDN fields via `c.*`)

### Admin Views:
- `admin/views/campaigns.view.php` - Campaign list
- `admin/views/new.campaign.view.php` - Add new campaign
- `admin/views/edit.campaign.view.php` - Edit campaign

### Admin Controllers:
- `admin/controller/new_campaign.php` - Create campaign
- `admin/controller/edit_campaign.php` - Update campaign

## Status: ✅ COMPLETE

Campaign CDN support is fully functional on both admin panel and frontend.
