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require_once __DIR__ . '/../includes/functions.php';
header('Content-Type: application/json');

if (!is_logged_in()) {
    echo json_encode(['success' => false, 'message' => 'Please login first']);
    exit;
}

$action = $_POST['action'] ?? '';
$user_id = $_SESSION['user_id'];
$product_id = intval($_POST['product_id']);

switch ($action) {
    case 'toggle':
        if (in_wishlist($user_id, $product_id)) {
            remove_from_wishlist($user_id, $product_id);
            echo json_encode([
                'success' => true,
                'action' => 'removed',
                'count' => count(get_user_wishlist($user_id))
            ]);
        } else {
            add_to_wishlist($user_id, $product_id);
            echo json_encode([
                'success' => true,
                'action' => 'added',
                'count' => count(get_user_wishlist($user_id))
            ]);
        }
        break;
        
    case 'add':
        add_to_wishlist($user_id, $product_id);
        echo json_encode([
            'success' => true,
            'message' => 'Added to wishlist',
            'count' => count(get_user_wishlist($user_id))
        ]);
        break;
        
    case 'remove':
        remove_from_wishlist($user_id, $product_id);
        echo json_encode([
            'success' => true,
            'message' => 'Removed from wishlist',
            'count' => count(get_user_wishlist($user_id))
        ]);
        break;
        
    case 'check':
        echo json_encode([
            'success' => true,
            'in_wishlist' => in_wishlist($user_id, $product_id)
        ]);
        break;
        
    default:
        echo json_encode(['success' => false, 'message' => 'Invalid action']);
}