<?php
require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");
header('Content-Type: application/json; charset=UTF-8');

use Bitrix\Main\Loader;
use Bitrix\Iblock\ElementTable;

$query = isset($_GET['q']) ? trim($_GET['q']) : '';
$results = [];

if ($query && Loader::includeModule('iblock') && Loader::includeModule('catalog')) {
    $iblockId = 4; // <-- Укажите ID вашего инфоблока с товарами
    $res = CIBlockElement::GetList([
        'SORT' => 'ASC'
    ], [
        'IBLOCK_ID' => $iblockId,
        'ACTIVE' => 'Y',
        '%NAME' => $query
    ], false, ['nTopCount' => 10], ['ID', 'NAME', 'DETAIL_PAGE_URL', 'PREVIEW_PICTURE', 'DETAIL_PICTURE']);
    while ($item = $res->GetNext()) {
        $img = '';
        if ($item['PREVIEW_PICTURE']) {
            $img = CFile::GetPath($item['PREVIEW_PICTURE']);
        } elseif ($item['DETAIL_PICTURE']) {
            $img = CFile::GetPath($item['DETAIL_PICTURE']);
        }
        // Абсолютный путь к картинке
        if ($img && strpos($img, 'http') !== 0) {
            global $APPLICATION;
            $protocol = (method_exists($APPLICATION, 'IsHTTPS') && $APPLICATION->IsHTTPS()) ? 'https' : 'http';
            $img = $protocol . '://' . $_SERVER['SERVER_NAME'] . $img;
        }
        $url = $item['DETAIL_PAGE_URL'];
        if ($url && $url[0] !== '/') {
            $url = '/' . ltrim($url, '/');
        }
        // Получаем цену
        $price = '';
        if (Loader::includeModule('catalog')) {
            $arPrice = CCatalogProduct::GetOptimalPrice($item['ID'], 1, array(), 'N');
            if ($arPrice && isset($arPrice['RESULT_PRICE']['DISCOUNT_PRICE'])) {
                $price = number_format($arPrice['RESULT_PRICE']['DISCOUNT_PRICE'], 0, '', ' ') . ' ₽';
            }
        }
        $results[] = [
            'title' => $item['NAME'],
            'url' => $url,
            'img' => $img,
            'price' => $price
        ];
    }
}
echo json_encode($results, JSON_UNESCAPED_UNICODE);