const got = require('@/utils/got');
const cheerio = require('cheerio');
const utils = require('./utils');
const { generateData } = require('./pin/utils');
const { parseDate } = require('@/utils/parse-date');

module.exports = async (ctx) => {
    const id = ctx.params.id;
    const getAll = ctx.params.getAll;

    const response = await got({
        method: 'get',
        url: `https://www.zhihu.com/api/v4/collections/${id}/items?offset=0&limit=20`,
        headers: {
            ...utils.header,
            Referer: `https://www.zhihu.com/collection/${id}`,
        },
    });

    const list = response.data.data;

    if (getAll) {
        const totals = response.data.paging.totals;

        const offsetList = [...new Array(Math.round(totals / 20)).keys()].map((item) => item * 20).slice(1);
        const otherList = await Promise.all(
            offsetList.map((offset) =>
                ctx.cache.tryGet(`https://www.zhihu.com/api/v4/collections/${id}/items?offset=${offset}&limit=20`, async () => {
                    const response = await got({
                        method: 'get',
                        url: `https://www.zhihu.com/api/v4/collections/${id}/items?offset=${offset}&limit=20`,
                        headers: {
                            ...utils.header,
                            Referer: `https://www.zhihu.com/collection/${id}`,
                        },
                    });

                    return response.data.data;
                })
            )
        ).then((item) => item.flat());
        list.push(...otherList);
    }

    const response2 = await got({
        method: 'get',
        url: `https://www.zhihu.com/collection/${id}`,
        headers: {
            ...utils.header,
            Referer: `https://www.zhihu.com/collection/${id}`,
        },
    });

    const meta = response2.data;
    const $ = cheerio.load(meta);
    const collection_title = $('.CollectionDetailPageHeader-title').text() + ' - 知乎收藏夹';
    const collection_description = $('.CollectionDetailPageHeader-description').text();

    const generateDataPin = (item) => generateData([item.content])[0];
    ctx.state.data = {
        title: collection_title,
        link: `https://www.zhihu.com/collection/${id}`,
        description: collection_description,
        item:
            list &&
            list.map((item) =>
                item.content.type === 'pin'
                    ? generateDataPin(item)
                    : {
                          title: item.content.type === 'article' || item.content.type === 'zvideo' ? item.content.title : item.content.question.title,
                          link: item.content.url,
                          description: item.content.type === 'zvideo' ? `<img src=${item.content.video.url}/>` : item.content.content,
                          pubDate: parseDate((item.content.type === 'article' ? item.content.updated : item.content.updated_time) * 1000),
                      }
            ),
    };
};