const got = require('@/utils/got');
const { art } = require('@/utils/render');
const path = require('path');
const cheerio = require('cheerio');
const get_sec_page_data = require('./get_sec_page_data');

const rootUrl = 'https://oreno3d.com';

const sortRename = {
    favorites: '高評価',
    hot: '急上昇',
    latest: '新着',
    popularity: '人気',
};

function get_user_url(rootUrl, ctx, sort) {
    let userUrl = '';
    // 判断userurl获取位置
    if (ctx.params.keyword) {
        const keyword = ctx.params.keyword;
        userUrl = `${rootUrl}/search?sort=${sort}&keyword=${keyword}`;
    } else if (ctx.params.characterid) {
        const characterid = ctx.params.characterid;
        userUrl = `${rootUrl}/characters/${characterid}?sort=${sort}`;
    } else if (ctx.params.authorid) {
        const authorid = ctx.params.authorid;
        userUrl = `${rootUrl}/authors/${authorid}?sort=${sort}`;
    } else if (ctx.params.tagid) {
        const tagid = ctx.params.tagid;
        userUrl = `${rootUrl}/tags/${tagid}?sort=${sort}`;
    } else if (ctx.params.originid) {
        const originid = ctx.params.originid;
        userUrl = `${rootUrl}/origins/${originid}?sort=${sort}`;
    }
    return userUrl;
}
module.exports = async (ctx) => {
    // 获取视频链接列表及标题
    function getLinksTitle(response) {
        const selector = 'a.box';
        const $ = cheerio.load(response.data);
        const title = $('div.g-main-list').find('h1.main-h').text();
        const list = $(selector);
        return { title, list };
    }
    // 数据爬取和分析
    async function getData(response) {
        const $ = cheerio.load(response.data);
        // 第一页，获取搜索主标题
        const title = getLinksTitle(response).title;
        const list = getLinksTitle(response).list;
        const items = await Promise.all(
            list
                .map(async (_, item) => {
                    // 第一页，获取搜各视频地址
                    const link = $(item).attr('href');
                    // 第二页数据分析+缓存
                    const sec_data = await get_sec_page_data(link);
                    // 传递
                    const raw_pic_link = sec_data.raw_pic_link;
                    const video_name = sec_data.video_name;
                    const authors = sec_data.authors;
                    const origins = sec_data.origins;
                    const characters = sec_data.characters;
                    const tags = sec_data.tags;
                    const desc = sec_data.desc;
                    const iwara_link = sec_data.iwara_link;
                    const oreno3d_link = sec_data.oreno3d_link;
                    // 打包,缓存HTML
                    const description = art(path.join(__dirname, 'templates/description.art'), {
                        raw_pic_link,
                        video_name,
                        authors,
                        origins,
                        characters,
                        tags,
                        desc,
                        iwara_link,
                        oreno3d_link,
                    });
                    const title = `${video_name} - ${authors}`;
                    const realData = await ctx.cache.tryGet(oreno3d_link, () => {
                        const result = {
                            title,
                            author: authors,
                            link: oreno3d_link,
                            category: tags.split(' '),
                            description,
                        };
                        return result;
                    });
                    return realData;
                })
                .get()
        );
        return { items, title };
    }
    // 参数定义
    const sort = ctx.params.sort;
    let pagelimit = ctx.params.pagelimit ?? 1;
    // 根链接
    const userUrl = get_user_url(rootUrl, ctx, sort);
    // 确认最大页数并比较修改(同时也是获取第一页的内容)
    const response = await got(userUrl);
    const $ = cheerio.load(response.data);
    const maxPageSelector = 'div.container > main > div.g-main-list > ul.pagination > li:last-child > a';
    // 页码判断
    if ($(maxPageSelector)) {
        const pageLink = new URLSearchParams($(maxPageSelector).attr('href'));
        const actualNum = pageLink.get('page'); // 获取最大页数
        if (parseInt(pagelimit) >= parseInt(actualNum)) {
            pagelimit = actualNum;
        }
    } else {
        pagelimit = 1;
    }
    // 构造网页数据的对应数组
    const responseList = [];
    // 将第一页的数据加入数组
    responseList.push(response);
    // 创建不含第一页链接的数组
    const Links = [];
    for (let i = 1; i < pagelimit; i++) {
        Links.push(`${userUrl}&page=${i + 1}`);
    }
    // 由数组索引添加response
    await Promise.all(
        Links.map(async (link) => {
            const response = await got(link);
            responseList.push(response);
        })
    );
    // 由数组索引获取初步分析数据
    const tempData = [];
    await Promise.all(
        responseList.map(async (response) => {
            const result = await getData(response);
            tempData.push(result);
        })
    );
    // 拼接多页面item
    let realItem = [];
    for (const data of tempData) {
        realItem = realItem.concat(data.items);
    }
    // 构造最终data
    const data = {
        title: tempData[0].title,
        item: realItem,
    };
    // 生成RSS源码
    ctx.state.data = {
        title: `${data.title} - ${sortRename[sort]}(Page 1-${pagelimit})`,
        link: userUrl,
        item: data.item,
    };
};