const got = require('@/utils/got');
const { parseDate } = require('@/utils/parse-date');
const { art } = require('@/utils/render');
const path = require('path');

module.exports = async (ctx) => {
    const topic = ctx.params.topic ?? '';
    const type = /t|y/i.test(ctx.params.type ?? 'true');
    const count = ctx.query.limit ? parseInt(ctx.query.limit) : 100;

    const rootUrl = 'https://www.dedao.cn';
    const currentUrl = `${rootUrl}/knowledge${topic === '' ? '' : '/topic/' + topic}`;
    const apiUrl = `${rootUrl}/pc/ledgers/${topic === '' ? 'notes/friends_timeline' : 'topic/notes/list'}`;
    const detailUrl = `${rootUrl}/pc/ledgers/topic/detail`;

    let title = '',
        description = '';

    if (topic !== '') {
        const detailResponse = await got({
            method: 'post',
            url: detailUrl,
            json: {
                incr_view_count: false,
                topic_id_hazy: topic,
            },
        });

        title = detailResponse.data.c.name;
        description = detailResponse.data.c.intro;
    }

    const response = await got({
        method: 'post',
        url: apiUrl,
        json: {
            count,
            load_chain: true,
            is_elected: type,
            page_id: 0,
            topic_id_hazy: topic,
            version: 2,
        },
    });

    const items = (topic === '' ? response.data.c.notes : response.data.c.note_detail_list).map((item) => ({
        title: item.f_part.note,
        author: item.f_part.nick_name,
        link: `${rootUrl}/knowledge/note/${item.f_part.note_id_hazy}`,
        pubDate: parseDate(item.f_part.time_desc, 'MM-DD'),
        description: art(path.join(__dirname, 'templates/knowledge.art'), {
            rootUrl,
            f_part: item.f_part,
            s_part: item.s_part,
        }),
    }));

    ctx.state.data = {
        title: `得到 - 知识城邦${title === '' ? '' : ' - ' + title}`,
        link: currentUrl,
        item: items,
        description,
    };
};