import { load } from 'cheerio';
import iconv from 'iconv-lite';

import type { Route } from '@/types';
import cache from '@/utils/cache';
import got from '@/utils/got';
import { parseDate } from '@/utils/parse-date';
import timezone from '@/utils/timezone';

export const route: Route = {
    path: '/:category?',
    categories: ['other'],
    example: '/auto-stats',
    parameters: { category: '分类，见下表，默认为信息快递' },
    features: {
        requireConfig: false,
        requirePuppeteer: false,
        antiCrawler: false,
        supportBT: false,
        supportPodcast: false,
        supportScihub: false,
    },
    name: '分类',
    maintainers: ['nczitzk'],
    handler,
    description: `| 信息快递 | 工作动态 | 专题分析 |
| -------- | -------- | -------- |
| xxkd     | gzdt     | ztfx     |`,
};

async function handler(ctx) {
    const { category = 'xxkd' } = ctx.req.param();
    const limit = ctx.req.query('limit') ? Number.parseInt(ctx.req.query('limit'), 10) : 30;

    const rootUrl = 'http://www.auto-stats.org.cn';
    const currentUrl = new URL(`${category}.asp`, rootUrl).href;

    const { data: response } = await got(currentUrl, {
        responseType: 'buffer',
    });

    const $ = load(iconv.decode(response, 'gbk'));

    let items = $('a.dnews font')
        .slice(0, limit)
        .toArray()
        .map((item) => {
            item = $(item);

            const title = item.text();
            const pubDate = title.match(/(\d{4}(?:\/\d{1,2}){2}\s\d{1,2}(?::\d{2}){2})/)?.[1] ?? undefined;

            return {
                title: title.replace(/●/, '').split(/（\d+/)[0],
                link: new URL(item.parent().prop('href'), rootUrl).href,
                pubDate: timezone(parseDate(pubDate, 'YYYY/M/D H:mm:ss'), +8),
            };
        });

    items = await Promise.all(
        items.map((item) =>
            cache.tryGet(item.link, async () => {
                const { data: detailResponse } = await got(item.link, {
                    responseType: 'buffer',
                });

                const content = load(iconv.decode(detailResponse, 'gbk'));

                item.description = content('table tbody tr td.dd').last().html();

                return item;
            })
        )
    );

    const subtitle = $('title')
        .text()
        .split(/——/)
        .pop();
    const image = new URL('images/logo.jpg', rootUrl).href;

    return {
        item: items,
        title: $('title').text(),
        link: currentUrl,
        description: subtitle,
        language: 'zh',
        image,
        subtitle,
        allowEmpty: true,
    };
}
