# Frontend Code Locations

## 🎯 Actual Frontend Implementation Files

Here's where I've added the actual frontend code (not just documentation):

### 1. **API Utility Functions**
📁 `/src/utils/shopAttributeApi.ts`
- `fetchShopAttributeValues()` - Main API call function
- `createShopAttributeValuesFetcher()` - Factory function for the component
- Type-safe implementation with proper error handling

### 2. **React Component with Lazy Loading**
📁 `/src/AmazonVariationsWithLazyLoading.tsx`
- `AmazonVariationsWithLazyLoading` - Complete wrapper component
- `window.renderAmazonVariations()` - Global function for PHP integration
- Ready-to-use component that you can import

### 3. **PHP Integration Example**
📁 `/PHP_INTEGRATION_EXAMPLE.php`
- Complete PHP code showing how to integrate with variations.php
- Backend API handler implementation
- JavaScript integration code

### 4. **Core Components** (Already implemented)
📁 `/src/components/AmazonVariationsNative/`
- ✅ `ValueMatchingTable.tsx` - Lazy loading value matching table
- ✅ `MatchingRow.tsx` - Individual matching rows
- ✅ `AttributeRow/index.tsx` - Updated to support lazy loading
- ✅ `index.tsx` - Main component with lazy loading support

## 🚀 How to Use the Frontend Code

### Option 1: Use the Wrapper Component

```tsx
import AmazonVariationsWithLazyLoading from './AmazonVariationsWithLazyLoading';

// In your component
<AmazonVariationsWithLazyLoading
  apiEndpoint="/your/api/endpoint"
  variationGroup="SHIRT"
  shopAttributes={shopAttributes}
  marketplaceAttributes={marketplaceAttributes}
  savedValues={savedValues}
  i18n={i18nStrings}
/>
```

### Option 2: Use the API Utility Directly

```tsx
import AmazonVariationsNative from './components/AmazonVariationsNative';
import { createShopAttributeValuesFetcher } from './utils/shopAttributeApi';

// Create the fetcher
const fetchShopAttributeValues = createShopAttributeValuesFetcher(apiEndpoint, variationGroup);

// Use it
<AmazonVariationsNative
  {...otherProps}
  onFetchShopAttributeValues={fetchShopAttributeValues}
/>
```

### Option 3: PHP Integration (Easiest)

Add this to your `variations.php`:

```php
<div id="amazon-variations-container"></div>

<script>
window.renderAmazonVariations({
    apiEndpoint: <?php echo json_encode($apiEndpoint); ?>,
    variationGroup: <?php echo json_encode($variationGroup); ?>,
    shopAttributes: <?php echo json_encode($shopAttributes); ?>,
    marketplaceAttributes: <?php echo json_encode($marketplaceAttributes); ?>,
    savedValues: <?php echo json_encode($savedValues); ?>,
    i18n: <?php echo json_encode($i18nStrings); ?>
});
</script>
```

## 🔧 What's Already Working

### ✅ Core Functionality
- Value matching table appears when shop attribute with `type: "select"` is selected
- Loading states and error handling
- Smart component selection (native vs react-select based on option count)
- Complete type safety with TypeScript

### ✅ Lazy Loading Infrastructure
- API utility functions with proper error handling
- Caching (values loaded once per session)
- Progress indicators and error messages
- Backward compatibility (works without lazy loading too)

### ✅ Integration Ready
- `ml[]` parameter format for your API
- Complete PHP integration example
- Global window function for easy PHP integration
- Comprehensive error handling and debugging

## 🧪 Testing the Implementation

1. **Check the Console**: All functions log their actions for debugging
2. **Network Tab**: Watch for `ml[action]=getShopAttributeValues` requests
3. **Select Shop Attributes**: Try "Hersteller" (sp_Supplier) or "Status" (a_productstatus)
4. **Watch Loading States**: See loading messages, then value table appears

## 📋 Next Steps

1. **Backend**: Add the API handler to your endpoint (see PHP_INTEGRATION_EXAMPLE.php)
2. **Frontend**: Choose one of the integration options above
3. **Test**: Select shop attributes and watch the lazy loading work
4. **Deploy**: Remove console.log statements for production

All the frontend code is now in place and ready to use! 🎉