const got = require('@/utils/got');
const cheerio = require('cheerio');
const timezone = require('@/utils/timezone');
const { parseDate, parseRelativeDate } = require('@/utils/parse-date');

module.exports = async (ctx) => {
    const { params = 'posts' } = ctx.params;
    const limit = ctx.query.limit ? parseInt(ctx.query.limit, 10) : 30;

    const isHot = params === 'hot';

    const rootUrl = 'https://www.toodaylab.com';
    const currentUrl = new URL(isHot ? 'posts' : params, rootUrl).href;

    const { data: response } = await got(currentUrl);

    const $ = cheerio.load(response);

    let items = isHot
        ? $('div.hot-list a')
              .slice(0, limit)
              .toArray()
              .map((item) => {
                  item = $(item);

                  return {
                      title: item.find('div.hot-item p').text(),
                      link: new URL(item.prop('href'), rootUrl).href,
                  };
              })
        : $('div.single-post')
              .slice(0, limit)
              .toArray()
              .map((item) => {
                  item = $(item);

                  const a = item.find('p.title a');

                  const pubDate = item
                      .find('div.left-infos p')
                      .text()
                      .trim()
                      .split(/\/\/\s/)
                      .pop();

                  return {
                      title: a.text(),
                      link: new URL(a.prop('href'), rootUrl).href,
                      description: item.find('p.excerpt').html(),
                      author: item.find('div.left-infos p a').text().trim(),
                      pubDate: timezone(/年|月|日/.test(pubDate) ? parseDate(pubDate, ['YYYY年M月D日 HH:mm', 'M月D日 HH:mm']) : parseRelativeDate(pubDate), +8),
                  };
              });

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

                const content = cheerio.load(detailResponse);

                const pubDate = content('div.left-infos p')
                    .text()
                    .trim()
                    .split(/\/\/\s/)
                    .pop();

                item.title = content('h1').text() || item.title;
                item.description = content('div.post-content').html() ?? item.description;
                item.author = content('div.left-infos p a').text().trim() ?? item.author;
                item.category = content('div.right-infos a')
                    .slice(1)
                    .toArray()
                    .map((c) => content(c).text().replace(/#/, ''));
                item.pubDate = item.pubDate ?? timezone(/年|月|日/.test(pubDate) ? parseDate(pubDate, ['YYYY年M月D日 HH:mm', 'M月D日 HH:mm']) : parseRelativeDate(pubDate), +8);
                item.upvotes = content('#like_count').text() ? parseInt(content('#like_count').text(), 10) : 0;
                item.comments = parseInt(content('div.right-infos a').first().text(), 10) || 0;

                return item;
            })
        )
    );

    const title = $('title').text().split(/\s-/)[0];
    const icon = $('link[rel="apple-touch-icon"]').last().prop('href');

    ctx.state.data = {
        item: items,
        title: isHot ? title.replace(/[^|]+/, '最热 ') : title,
        link: currentUrl,
        description: $('meta[name="description"]').prop('content'),
        language: $('html').prop('lang'),
        image: $('h3.logo a img').prop('src'),
        icon,
        logo: icon,
        subtitle: $('meta[name="keywords"]').prop('content'),
        author: $('h3.logo a img').prop('alt'),
    };
};