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

module.exports = async (ctx) => {
    const cid = ctx.params.cid || 'all';
    const sort = ctx.params.sort;

    let url = 'https://learnblockchain.cn/categories/';
    url += cid + '/';

    if (sort) {
        url += sort + '/';
    }

    const response = await got(url);

    const data = response.data;
    const $ = cheerio.load(data);
    const list = $('div.stream-list section.stream-list-item');

    ctx.state.data = {
        title: `登链社区--${cid}`,
        link: url,
        description: `登链社区`,
        item: list && list.map((idx, ite) => {
            const item = $(ite);
            const json = {
                title: item.find('h2.title').text().trim(),
                description: item.find('div.excerpt').text().trim(),
                pubDate: parseRelativeDate(item.find('.author li:nth-child(2)').text().replace('发布于', '').trim()),
                link: item.find('h2.title a').attr('href').trim(),
                author: item.find('.author li:nth-child(1)').text().trim(),
            };

            return json;
        }).get(),
    };

};