# Shop and Cart Facades Implementation Summary

## Overview

Successfully implemented two core Facades for the Laravel Shop package to simplify the API for Laravel developers.

## Files Created

### 1. **Facades**

#### `src/Facades/Shop.php`
- Static accessor for shop-related functionality
- Provides convenient methods for product browsing and inventory management
- Type-hinted methods for IDE autocomplete support

#### `src/Facades/Cart.php`
- Static accessor for shopping cart operations
- Simplifies cart management without needing authentication context
- Type-hinted methods for IDE autocomplete support

### 2. **Services**

#### `src/Services/ShopService.php`
Core implementation for shop operations:
- `products()` - Get all products query builder
- `product($id)` - Get single product
- `categories()` - Get all categories
- `inStock()` - Get in-stock products
- `featured()` - Get featured products
- `published()` - Get published and visible products
- `search($query)` - Search products
- `checkStock($product, $quantity)` - Verify stock availability
- `getAvailableStock($product)` - Get available quantity
- `isOnSale($product)` - Check if product is on sale
- `config($key, $default)` - Get shop configuration
- `currency()` - Get default currency

#### `src/Services/CartService.php`
Core implementation for cart operations:
- `current()` - Get current authenticated user's cart
- `forUser($user)` - Get cart for specific user
- `find($cartId)` - Find cart by ID
- `add($product, $quantity, $parameters)` - Add item to cart
- `remove($product, $quantity, $parameters)` - Remove item from cart
- `update($cartItem, $quantity)` - Update item quantity
- `clear()` - Clear cart
- `checkout()` - Checkout cart
- `total()` - Get cart total
- `itemCount()` - Get item count
- `items()` - Get cart items
- `isEmpty()` - Check if empty
- `isExpired()` - Check if expired
- `isConverted()` - Check if converted
- `unpaidAmount()` - Get unpaid amount
- `paidAmount()` - Get paid amount

### 3. **Service Provider Updates**

Updated `src/ShopServiceProvider.php` to:
- Bind `shop.service` to `ShopService` in the container
- Bind `shop.cart` to `CartService` in the container
- Register both facades for easy access throughout the application

## Test Coverage

### `tests/Feature/ShopFacadeTest.php` (23 tests)
Tests for Shop facade functionality:
- Product retrieval and filtering
- Category access
- Stock checking
- Search functionality
- Configuration access
- Query builder chaining
- Pagination support

### `tests/Feature/CartFacadeTest.php` (26 tests)
Tests for Cart facade functionality:
- Cart retrieval and creation
- Adding items with parameters
- Removing items
- Updating quantities
- Cart clearing and checkout
- Total and count calculations
- Cart status checks
- Paid/unpaid amount tracking
- Multi-product operations

## Test Results

✅ **All 49 new tests pass**
✅ **All 391 total tests pass** (including existing tests)
✅ **7 tests skipped** (intentional)
✅ **No regressions** to existing functionality

## Usage Examples

### Shop Facade

```php
use Blax\Shop\Facades\Shop;

// Get featured products
$featured = Shop::featured()->with('prices')->get();

// Check stock availability
if (Shop::checkStock($product, 2)) {
    // Add to cart
}

// Search products
$results = Shop::search('laptop')->paginate(10);

// Get available stock
$available = Shop::getAvailableStock($product);
```

### Cart Facade

```php
use Blax\Shop\Facades\Cart;

// Add to cart
Cart::add($product, quantity: 2, parameters: ['size' => 'L']);

// Get cart info
$total = Cart::total();
$count = Cart::itemCount();
$items = Cart::items();

// Update and manage
Cart::update($cartItem, quantity: 5);
Cart::remove($product, quantity: 1);

// Checkout
$purchases = Cart::checkout();
```

## Benefits

1. **Cleaner Code**: No need for `auth()->user()->currentCart()->getTotal()`
2. **Better Testing**: Easy to mock with `Cart::shouldReceive()`
3. **IDE Support**: Static methods provide excellent autocomplete
4. **Consistent Interface**: Unified API across the package
5. **Type Safety**: All methods are properly type-hinted
6. **Documentation**: Methods are self-documenting through type hints

## Future Improvements

Consider implementing additional facades:
- `Inventory` - For stock management
- `Purchase` - For purchase operations
- `Stripe` - For payment processing

These were outlined in the `FACADE_SUGGESTIONS.md` document and can be implemented using the same pattern.

## Integration

The facades are automatically registered in the service container through the `ShopServiceProvider`. They're ready to use immediately after the package is installed:

```php
// No additional configuration needed!
use Blax\Shop\Facades\Shop;
use Blax\Shop\Facades\Cart;

Shop::featured();
Cart::add($product);
```