// digikala.js

async function searchDigikala(query, limit = 12) {
    if (!query?.trim()) return [];

    const url = `https://api.digikala.com/v3/search/?q=${encodeURIComponent(query.trim())}`;

    const headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36',
        'Accept': 'application/json',
        'Accept-Language': 'fa,en;q=0.9',
        'Referer': 'https://www.digikala.com/',
        'Origin': 'https://www.digikala.com',
        'Sec-Fetch-Site': 'same-site',
        'Sec-Fetch-Mode': 'cors',
        'x-api-client': 'web'
    };

    try {
        const res = await fetch(url, { headers, timeout: 10000 });

        if (!res.ok) {
            console.error(`❌ API Error: ${res.status} ${res.statusText}`);
            return [];
        }

        const data = await res.json();

        // Navigate to product list
        const widgets = data?.data?.widgets?.[0];
        if (!widgets || widgets.type !== 'vertical_product_listing') {
            console.warn('⚠️ Unexpected widget structure');
            return [];
        }

        const productWidgets = widgets.data?.widgets || [];
        const products = productWidgets
            .filter(w => w.type === 'product')
            .map(w => w.data)
            .slice(0, limit)
            .map(p => ({
                id: p.id,
                title: p.title_fa || 'بدون عنوان',
                image: p.images?.main?.url?.[0] || 'https://dkstatics-public.digikala.com/digikala-products/default.jpg?x-oss-process=image/resize,m_lfit,h_150,w_150',
                rrpPrice: p.default_variant?.price?.sellingPrice || null,
                sellingPrice: p.default_variant?.price?.selling_price || null,
                discountPercent: p.default_variant?.price?.discount_percent || 0,
                link: 'https://www.digikala.com' + (p.url?.uri || `/product/dkp-${p.id}/`)
            }));

        return products;

    } catch (err) {
        console.error('🔴 Fetch error:', err.message);
        return [];
    }
}

module.exports = { searchDigikala };