/**
 * Google Trends via public RSS feed.
 * Shows daily trending searches for a given region.
 */
import { cli, Strategy } from '@jackwener/opencli/registry';
import { CliError } from '@jackwener/opencli/errors';
import { parseRssItems } from './utils.js';
cli({
    site: 'google',
    name: 'trends',
    access: 'read',
    description: 'Get Google Trends daily trending searches',
    strategy: Strategy.PUBLIC,
    browser: false,
    args: [
        { name: 'region', default: 'US', help: 'Region code (e.g. US, CN, JP)' },
        { name: 'limit', type: 'int', default: 20, help: 'Number of results' },
    ],
    columns: ['title', 'traffic', 'date'],
    func: async (args) => {
        const limit = Math.max(1, Math.min(Number(args.limit), 100));
        const region = encodeURIComponent(args.region);
        const url = `https://trends.google.com/trending/rss?geo=${region}`;
        const resp = await fetch(url);
        if (!resp.ok) {
            throw new CliError('FETCH_ERROR', `HTTP ${resp.status}`, 'Check your network connection or region code');
        }
        const xml = await resp.text();
        const items = parseRssItems(xml, ['title', 'pubDate', 'ht:approx_traffic']);
        if (!items.length) {
            throw new CliError('NOT_FOUND', 'No trending data found', 'Try a different region code');
        }
        return items.slice(0, limit).map(item => ({
            title: item['title'],
            traffic: item['ht:approx_traffic'], // raw string e.g. "1,000,000+", no numeric conversion
            date: item['pubDate'],
        }));
    },
});
