const cheerio = require('cheerio');
const axios = require('@/utils/axios');

module.exports = async (ctx) => {
    const link = 'https://www.digitaling.com';
    const res = await axios.get(link);
    const $ = cheerio.load(res.data);
    // 文章列表
    const list = $('#home_latest li h3')
        .find('a')
        .map((i, e) => $(e).attr('href'))
        .get();

    const out = await Promise.all(
        list.map(async (itemUrl) => {
            const cache = await ctx.cache.get(itemUrl);
            // 判断缓存
            if (cache) {
                return Promise.resolve(JSON.parse(cache));
            }
            const res = await axios.get(itemUrl);
            const $ = cheerio.load(res.data);

            const item = {
                title: $('.project_title h2').text(),
                author: $('#avatar_by')
                    .find('a')
                    .text(),
                link: itemUrl,
                description: $('#article_con').html(),
                pubDate: new Date().toUTCString(),
            };
            ctx.cache.set(itemUrl, JSON.stringify(item));

            return Promise.resolve(item);
        })
    );

    ctx.state.data = {
        title: '数英网-最新文章',
        link: link,
        item: out,
    };
};