import { type Data, type DataItem, type Route, ViewType } from '@/types';

import cache from '@/utils/cache';
import iconv from 'iconv-lite';
import ofetch from '@/utils/ofetch';
import { parseDate } from '@/utils/parse-date';
import timezone from '@/utils/timezone';

import { type CheerioAPI, type Cheerio, load } from 'cheerio';
import type { Element } from 'domhandler';
import { type Context } from 'hono';

const domain: string = 'www.dydytt.net';
const baseUrl: string = `https://${domain}`;

export const handler = async (ctx: Context): Promise<Data> => {
    const { category = 'gndy/dyzz' } = ctx.req.param();
    const limit: number = Number.parseInt(ctx.req.query('limit') ?? '25', 10);

    const targetUrl: string = new URL(`html/${category.replace(/^html\//, '')}`, baseUrl).href;

    const response = await ofetch(targetUrl, {
        responseType: 'arrayBuffer',
    });
    const $: CheerioAPI = load(iconv.decode(Buffer.from(response), 'gb2312'));
    const language = $('html').attr('lang') ?? 'zh-CN';

    let items: DataItem[] = [];

    items = $('div.co_content8 ul table')
        .slice(0, limit)
        .toArray()
        .map((el): Element => {
            const $el: Cheerio<Element> = $(el);

            const $aEl: Cheerio<Element> = $el.find('a.ulink');

            const title: string = $aEl.text();
            const description: string = $el.find('td').last().text();
            const pubDateStr: string | undefined = $el.find('font').last().text().split(/：/).pop();
            const linkUrl: string | undefined = $aEl.attr('href');
            const upDatedStr: string | undefined = pubDateStr;

            const processedItem: DataItem = {
                title,
                description,
                pubDate: pubDateStr ? timezone(parseDate(pubDateStr), +8) : undefined,
                link: linkUrl ? new URL(linkUrl, baseUrl).href : undefined,
                doi: $el.find('meta[name="citation_doi"]').attr('content'),
                content: {
                    html: description,
                    text: description,
                },
                updated: upDatedStr ? timezone(parseDate(upDatedStr), +8) : undefined,
                language,
            };

            return processedItem;
        });

    items = (
        await Promise.all(
            items.map((item) => {
                if (!item.link) {
                    return item;
                }

                return cache.tryGet(item.link, async (): Promise<DataItem> => {
                    const detailResponse = await ofetch(item.link, {
                        responseType: 'arrayBuffer',
                    });
                    const $$: CheerioAPI = load(iconv.decode(Buffer.from(detailResponse), 'gb2312'));

                    const title: string = $$('div.title_all h1 font').text();

                    const $descriptionEl: Cheerio<Element> = $$('div#Zoom span').first();
                    const childEls = $descriptionEl.contents().toArray();
                    const centerIdx = childEls.findIndex((node) => node.type === 'tag' && node.name === 'center');
                    const description: string = (centerIdx === -1 ? childEls : childEls.slice(0, centerIdx)).map((node) => $.html(node)).join('');

                    const pubDateStr: string | undefined = item.pubDate ? undefined : $descriptionEl.prev().text().split(/：/).pop();
                    const image: string | undefined = $descriptionEl.find('img').first().attr('src');
                    const upDatedStr: string | undefined = pubDateStr;

                    let processedItem: DataItem = {
                        title,
                        description,
                        pubDate: pubDateStr ? parseDate(pubDateStr) : item.pubDate,
                        content: {
                            html: description,
                            text: description,
                        },
                        image,
                        banner: image,
                        updated: upDatedStr ? parseDate(upDatedStr) : item.updated,
                        language,
                    };

                    const $enclosureEl: Cheerio<Element> = $descriptionEl.find('a[href^="magnet:"]').last();
                    const enclosureUrl: string | undefined = $enclosureEl.attr('href');

                    if (enclosureUrl) {
                        const enclosureType: string = 'application/x-bittorrent';
                        const enclosureTitle: string = $enclosureEl.text();

                        processedItem = {
                            ...processedItem,
                            enclosure_url: enclosureUrl,
                            enclosure_type: enclosureType,
                            enclosure_title: enclosureTitle || title,
                            enclosure_length: undefined,
                            itunes_duration: undefined,
                            itunes_item_image: image,
                        };
                    }

                    return {
                        ...item,
                        ...processedItem,
                    };
                });
            })
        )
    ).filter((_): _ is DataItem => true);

    const title: string = $('title').text();

    return {
        title,
        description: $('META[name=description]').attr('content'),
        link: targetUrl,
        item: items,
        allowEmpty: true,
        image: new URL('images/logo.gif', baseUrl).href,
        author: title.split(/_/).pop(),
        language,
        id: targetUrl,
    };
};

export const route: Route = {
    path: '/:category{.+}?',
    name: '分类',
    url: domain,
    maintainers: ['junfengP', 'nczitzk'],
    handler,
    example: '/dytt/gndy/dyzz',
    parameters: {
        category: {
            description: '分类，默认为 `gndy/dyzz`，即最新影片，可在对应分类页 URL 中找到',
            options: [
                {
                    label: '最新影片',
                    value: 'gndy/dyzz',
                },
                {
                    label: '经典影片',
                    value: 'gndy',
                },
                {
                    label: '国内电影',
                    value: 'gndy/china',
                },
                {
                    label: '欧美电影',
                    value: 'gndy/oumei',
                },
                {
                    label: '其它电影',
                    value: 'gndy/rihan',
                },
                {
                    label: '华语电视',
                    value: 'tv/hytv',
                },
                {
                    label: '欧美电视',
                    value: 'tv/oumeitv',
                },
                {
                    label: '最新综艺',
                    value: 'zongyi2013',
                },
                {
                    label: '旧版综艺',
                    value: '2009zongyi',
                },
                {
                    label: '动漫资源',
                    value: 'dongman',
                },
                {
                    label: '旧版游戏',
                    value: 'game',
                },
                {
                    label: '游戏下载',
                    value: 'newgame',
                },
                {
                    label: '日韩剧集专区',
                    value: 'tv/rihantv',
                },
            ],
        },
    },
    description: `:::tip
若订阅 [最新影片](${baseUrl}/html/gndy/dyzz)，网址为 \`${baseUrl}/html/gndy/dyzz\`，请截取 \`${baseUrl}/html/\` 到末尾的部分 \`gndy/dyzz\` 作为 \`category\` 参数填入，此时目标路由为 [\`/dytt/gndy/dyzz\`](https://rsshub.app/dytt/gndy/dyzz)。

:::

<details>
<summary>更多分类</summary>

| 分类                                                  | ID                                               |
| ----------------------------------------------------- | ------------------------------------------------ |
| [最新影片](${baseUrl}/html/gndy/dyzz/index.html)      | [gndy/dyzz](https://rsshub.app/dytt/gndy/dyzz)   |
| [经典影片](${baseUrl}/html/gndy/index.html)           | [gndy](https://rsshub.app/dytt/gndy)             |
| [国内电影](${baseUrl}/html/gndy/china/index.html)     | [gndy/china](https://rsshub.app/dytt/gndy/china) |
| [欧美电影](${baseUrl}/html/gndy/oumei/index.html)     | [gndy/oumei](https://rsshub.app/dytt/gndy/oumei) |
| [其它电影](${baseUrl}/html/gndy/rihan/index.html)     | [gndy/rihan](https://rsshub.app/dytt/gndy/rihan) |
| [华语电视](${baseUrl}/html/tv/hytv/index.html)        | [tv/hytv](https://rsshub.app/dytt/tv/hytv)       |
| [欧美电视](${baseUrl}/html/tv/oumeitv/index.html)     | [tv/oumeitv](https://rsshub.app/dytt/tv/oumeitv) |
| [最新综艺](${baseUrl}/html/zongyi2013/index.html)     | [zongyi2013](https://rsshub.app/dytt/zongyi2013) |
| [旧版综艺](${baseUrl}/html/2009zongyi/index.html)     | [2009zongyi](https://rsshub.app/dytt/2009zongyi) |
| [动漫资源](${baseUrl}/html/dongman/index.html)        | [dongman](https://rsshub.app/dytt/dongman)       |
| [旧版游戏](${baseUrl}/html/game/index.html)           | [game](https://rsshub.app/dytt/game)             |
| [游戏下载](${baseUrl}/html/newgame/index.html)        | [newgame](https://rsshub.app/dytt/newgame)       |
| [日韩剧集专区](${baseUrl}/html/tv/rihantv/index.html) | [tv/rihantv](https://rsshub.app/dytt/tv/rihantv) |

</details>
`,
    categories: ['multimedia'],
    features: {
        requireConfig: false,
        requirePuppeteer: false,
        antiCrawler: false,
        supportRadar: true,
        supportBT: true,
        supportPodcast: false,
        supportScihub: false,
    },
    radar: [
        {
            source: ['${domain}/index.htm', `${domain}/html/:category`],
            target: (params) => {
                const category: string = params.category;

                return `/dytt/html${category ? `/${category}` : ''}`;
            },
        },
        {
            title: '最新影片',
            source: [`${baseUrl}/html/gndy/dyzz/index.html`],
            target: '/gndy/dyzz',
        },
        {
            title: '经典影片',
            source: [`${baseUrl}/html/gndy/index.html`],
            target: '/gndy',
        },
        {
            title: '国内电影',
            source: [`${baseUrl}/html/gndy/china/index.html`],
            target: '/gndy/china',
        },
        {
            title: '欧美电影',
            source: [`${baseUrl}/html/gndy/oumei/index.html`],
            target: '/gndy/oumei',
        },
        {
            title: '其它电影',
            source: [`${baseUrl}/html/gndy/rihan/index.html`],
            target: '/gndy/rihan',
        },
        {
            title: '华语电视',
            source: [`${baseUrl}/html/tv/hytv/index.html`],
            target: '/tv/hytv',
        },
        {
            title: '欧美电视',
            source: [`${baseUrl}/html/tv/oumeitv/index.html`],
            target: '/tv/oumeitv',
        },
        {
            title: '最新综艺',
            source: [`${baseUrl}/html/zongyi2013/index.html`],
            target: '/zongyi2013',
        },
        {
            title: '旧版综艺',
            source: [`${baseUrl}/html/2009zongyi/index.html`],
            target: '/2009zongyi',
        },
        {
            title: '动漫资源',
            source: [`${baseUrl}/html/dongman/index.html`],
            target: '/dongman',
        },
        {
            title: '旧版游戏',
            source: [`${baseUrl}/html/game/index.html`],
            target: '/game',
        },
        {
            title: '游戏下载',
            source: [`${baseUrl}/html/newgame/index.html`],
            target: '/newgame',
        },
        {
            title: '日韩剧集专区',
            source: [`${baseUrl}/html/tv/rihantv/index.html`],
            target: '/tv/rihantv',
        },
    ],
    view: ViewType.Articles,
};