import { Route } from '@/types';
import cache from '@/utils/cache';
import got from '@/utils/got';
import { load } from 'cheerio';
import { parseDate } from '@/utils/parse-date';
import { isValidHost } from '@/utils/valid-host';
import InvalidParameterError from '@/errors/types/invalid-parameter';

export const route: Route = {
    path: '/:domain/tag/:tag',
    name: 'Unknown',
    maintainers: [],
    handler,
};

async function handler(ctx) {
    const { domain = 'news', tag } = ctx.req.param();
    if (!isValidHost(domain)) {
        throw new InvalidParameterError('Invalid domain');
    }
    const baseUrl = `https://${domain}.gamme.com.tw`;
    const pageUrl = `${baseUrl}/tag/${tag}`;

    const { data } = await got(pageUrl);
    const $ = load(data);

    const list = $('#category_new li a, .List-4 h3 a')
        .toArray()
        .map((item) => {
            item = $(item);
            return {
                title: item.attr('title') || item.text(),
                link: item.attr('href'),
            };
        });

    const items = await Promise.all(
        list.map((item) =>
            cache.tryGet(item.link, async () => {
                const { data } = await got(item.link);
                const $ = load(data);

                $('.entry img').each((_, img) => {
                    if (img.attribs['data-original'] || img.attribs['data-src']) {
                        img.attribs.src = img.attribs['data-original'] || img.attribs['data-src'];
                        delete img.attribs['data-original'];
                        delete img.attribs['data-src'];
                    }
                });

                item.author = $('.author_name').text().trim();
                item.category = $('.tags a')
                    .toArray()
                    .map((tag) => $(tag).text());
                $('.social_block, .tags').remove();
                item.pubDate = parseDate($('.postDate').attr('content'));
                item.description = $('.entry').html();

                return item;
            })
        )
    );

    return {
        title: `${tag} | ${domain === 'news' ? '宅宅新聞' : '西斯新聞'}`,
        description: $('meta[name=description]').attr('content'),
        link: pageUrl,
        image: domain === 'news' ? `${baseUrl}/blogico.ico` : `${baseUrl}/favicon.ico`,
        item: items,
    };
}