'use server';

/**
 * Service to discover a Whiskybase ID for a given bottle.
 * Uses Google Custom Search JSON API to search Google and extracts the ID from the first result.
 */
export async function discoverWhiskybaseId(bottle: {
    name: string;
    distillery?: string;
    abv?: number;
    age?: number;
    distilled_at?: string;
    bottled_at?: string;
    batch_info?: string;
}) {
    // Both Gemini and Custom Search often use the same API key if created via AI Studio
    const apiKey = process.env.GEMINI_API_KEY || process.env.GOOGLE_API_KEY;
    const cx = '37e905eb03fd14e0f'; // Provided by user

    if (!apiKey) {
        return {
            success: false,
            error: 'GEMINI_API_KEY oder GOOGLE_API_KEY ist nicht konfiguriert.'
        };
    }

    try {
        // Construct targeted search query
        const queryParts = [
            bottle.distillery ? `${bottle.distillery}` : '', // Removed quotes for more fuzzy matching
            bottle.name ? `${bottle.name}` : '',
            bottle.abv ? `${bottle.abv}%` : '',
            bottle.age ? `${bottle.age} year old` : '',
            bottle.batch_info ? `"${bottle.batch_info}"` : '',
            bottle.distilled_at ? `distilled ${bottle.distilled_at}` : '',
            bottle.bottled_at ? `bottled ${bottle.bottled_at}` : ''
        ].filter(Boolean);

        const q = queryParts.join(' ');
        console.log('Whiskybase Search Query:', q);

        const url = `https://www.googleapis.com/customsearch/v1?key=${apiKey}&cx=${cx}&q=${encodeURIComponent(q)}`;

        const response = await fetch(url);
        const data = await response.json();

        if (data.error) {
            console.error('Google API Error Response:', data.error);
            throw new Error(data.error.message || 'Google API Error');
        }

        if (!data.items || data.items.length === 0) {
            return {
                success: false,
                error: `Keine Treffer auf Whiskybase gefunden. (Query: ${q})`
            };
        }

        // Try to find the first result that looks like a valid product page
        // Pattern matches: https://www.whiskybase.com/whiskies/whisky/12345/name
        const wbRegex = /\/whisky\/(\d+)\//;

        for (const item of data.items) {
            const link = item.link;
            const match = link.match(wbRegex);

            if (match && match[1]) {
                return {
                    success: true,
                    id: match[1],
                    url: link,
                    title: item.title
                };
            }
        }

        return { success: false, error: 'Konnte keine gültige Whiskybase-ID im Suchergebnis finden.' };
    } catch (error) {
        console.error('Whiskybase Discovery Error:', error);
        return {
            success: false,
            error: error instanceof Error ? error.message : 'Fehler bei der Suche auf Whiskybase.'
        };
    }
}