<?php
session_start();
header('Content-Type: application/json');

if (!isset($_SESSION['user_id'])) {
    echo json_encode(['success' => false, 'message' => 'يجب تسجيل الدخول']);
    exit;
}

require_once '../../config/database.php';

try {
    $database = new Database();
    $db = $database->getConnection();
    
    $user_id = $_SESSION['user_id'];
    $product_id = $_POST['product_id'] ?? 0;
    
    if (empty($product_id)) {
        echo json_encode(['success' => false, 'message' => 'معرف المنتج مطلوب']);
        exit;
    }
    
    // Check if product exists
    $stmt = $db->prepare("SELECT id FROM products WHERE id = ?");
    $stmt->execute([$product_id]);
    if (!$stmt->fetch()) {
        echo json_encode(['success' => false, 'message' => 'المنتج غير موجود']);
        exit;
    }
    
    // Check if already in wishlist
    $stmt = $db->prepare("SELECT id FROM wishlist WHERE user_id = ? AND product_id = ?");
    $stmt->execute([$user_id, $product_id]);
    
    if ($stmt->fetch()) {
        echo json_encode(['success' => false, 'message' => 'المنتج موجود بالفعل في المفضلة']);
        exit;
    }
    
    // Add to wishlist
    $stmt = $db->prepare("INSERT INTO wishlist (user_id, product_id) VALUES (?, ?)");
    $stmt->execute([$user_id, $product_id]);
    
    // Get wishlist count
    $stmt = $db->prepare("SELECT COUNT(*) FROM wishlist WHERE user_id = ?");
    $stmt->execute([$user_id]);
    $wishlist_count = $stmt->fetchColumn();
    
    echo json_encode([
        'success' => true, 
        'message' => 'تم إضافة المنتج للمفضلة',
        'wishlist_count' => $wishlist_count
    ]);
    
} catch (PDOException $e) {
    echo json_encode(['success' => false, 'message' => 'حدث خطأ: ' . $e->getMessage()]);
}
?>