/**
 * Fetch IKEA product name and canonical ID via Search API
 */
function getIkeaProductInfo($country, $productId) {
    $country = strtolower($country);
    $lang = ($country == 'ca') ? 'en' : 'en'; // Simple map for now
    $url = "https://sik.search.blue.cdtapps.com/{$country}/{$lang}/search-result-page?q={$productId}";

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 10);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36");
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        "Accept: application/json",
        "Referer: https://www.ikea.com/{$country}/{$lang}/"
    ]);
    
    $response = curl_exec($ch);
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    if ($httpCode != 200 || !$response) {
        return ['name' => "Article $productId", 'canonical_id' => $productId];
    }

    $data = json_decode($response, true);
    $items = $data['searchResultPage']['products']['main']['items'] ?? [];
    
    foreach ($items as $item) {
        $p = $item['product'] ?? [];
        $itemNo = $p['itemNo'] ?? '';
        $name = $p['name'] ?? '';
        $type = $p['typeName'] ?? '';
        
        if ($itemNo == $productId || stripos($name, $productId) !== false) {
            return [
                'name' => trim("$name $type"),
                'canonical_id' => $itemNo
            ];
        }
    }

    return ['name' => "Article $productId", 'canonical_id' => $productId];
}

/**
 * Fetch IKEA stock availability
 */
function getIkeaAvailability($country, $productId, $canonicalId, $storeId = null) {
    if (!$canonicalId) return ['stock' => 0, 'status' => "Invalid ID", 'restock' => null];
    
    $baseUrl = "https://api.ingka.ikea.com/cia/availabilities";
    $clientId = "da465052-7912-43b2-82fa-9dc39cdccef8";

    if ($storeId) {
        $url = "{$baseUrl}/sto/{$storeId}?itemNos={$canonicalId}&expand=Restocks";
    } else {
        $url = "{$baseUrl}/ru/" . strtolower($country) . "?itemNos={$canonicalId}&expand=Restocks";
    }

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        "X-Client-ID: $clientId",
        "Accept: application/json;version=1",
        "Referer: https://www.ikea.com/",
        "Origin: https://www.ikea.com"
    ]);
    curl_setopt($ch, CURLOPT_TIMEOUT, 15);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36");

    $response = curl_exec($ch);
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    if ($httpCode == 403) {
        return [
            'stock' => 0,
            'status' => "Blocked (403)",
            'restock' => null
        ];
    }

    if ($httpCode != 200 || !$response) {
        return [
            'stock' => 0,
            'status' => "API Error ($httpCode)",
            'restock' => null
        ];
    }

    $data = json_decode($response, true);
    $availabilities = $data['availabilities'] ?? [];
    
    if (empty($availabilities)) {
        return [
            'stock' => 0,
            'status' => "Not Found",
            'restock' => null
        ];
    }

    // Usually there's only one item in the list for a specific sto/ru call with one itemNo
    $item = $availabilities[0];
    
    $avail = $item['buyingOption']['cashCarry']['availability'] ?? null;
    if (!$avail && $item['classUnitKey']['classUnitType'] == 'RU') {
        $avail = $item['buyingOption']['homeDelivery']['availability'] ?? null;
    }
    
    if (!$avail) {
        return [
            'stock' => 0,
            'status' => "No Data",
            'restock' => null
        ];
    }

    $stock = $avail['quantity'] ?? 0;
    $prob = $avail['probability']['thisDay']['messageType'] ?? 'UNKNOWN';
    
    $restock = null;
    $restocks = $avail['restocks'] ?? [];
    if (!empty($restocks)) {
        $restock = $restocks[0]['earliestDate'] ?? $restocks[0]['date'] ?? null;
    }

    return [
        'stock' => $stock,
        'status' => strtoupper($prob),
        'restock' => $restock
    ];
}

/**
 * List of stores for selection
 */
function getIkeaStores($country) {
    // Subset of stores for CA as requested
    $stores = [
        'ca' => [
            ['buCode' => '216', 'name' => 'Calgary'],
            ['buCode' => '004', 'name' => 'Ottawa'],
            ['buCode' => '149', 'name' => 'Toronto North York'],
            ['buCode' => '039', 'name' => 'Montréal'],
            ['buCode' => '003', 'name' => 'Vancouver Richmond'],
            ['buCode' => '659', 'name' => 'Toronto Downtown'],
            ['buCode' => '313', 'name' => 'Coquitlam'],
            ['buCode' => '349', 'name' => 'Edmonton'],
            ['buCode' => '256', 'name' => 'Etobicoke'],
            ['buCode' => '529', 'name' => 'Halifax'],
            ['buCode' => '559', 'name' => 'Québec City'],
            ['buCode' => '372', 'name' => 'Vaughan'],
            ['buCode' => '249', 'name' => 'Winnipeg'],
            ['buCode' => '414', 'name' => 'Boucherville'],
            ['buCode' => '040', 'name' => 'Burlington'],
        ]
    ];
    
    return $stores[strtolower($country)] ?? [];
}
?>
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