import * as cheerio from "cheerio";
import { htmlRequestHeaders, redis } from "../utils/server";
import type { ClubInfo, EventDetail, IEventInfo, MatchSummary, Player } from "../types";
import dayjs from "dayjs";
import utc from 'dayjs/plugin/utc';
import timezone from 'dayjs/plugin/timezone';

dayjs.extend(utc);
dayjs.extend(timezone);

export class KaiqiuService {
  static #baseURL = 'https://kaiqiuwang.cc';

  public static async findClub(name: string, page = 1, normalClub?: boolean, province?: string, city?: string) {
    const searchKey = encodeURIComponent(name);
    const url = `${this.#baseURL}/home/space.php?province=${province}&city=${city}&searchkey=${searchKey}&searchsubmit=%E6%90%9C%E7%B4%A2&searchmode=1&do=mtag&view=hot&${normalClub ? 'page2': 'page'}=${page}`;
    const html = await fetch(url, {
      headers: htmlRequestHeaders,
    }).then(res => res.text());
    return this.parseSearchClubPage(html, Boolean(normalClub));
  }

  private static parseSearchClubPage(html: string, normal: boolean): {
    clubs: ClubInfo[];
    total: number;
  } {
    const $ = cheerio.load(html);
    const infos = $(`#content > div:nth-of-type(${normal ? 2 : 1}) td[width="250"]`).toArray();
    const imgs = $(`#content > div:nth-of-type(${normal ? 2 : 1}) td[width="80"]`).toArray();
    const parseInfo = (info: typeof infos[number], index: number): ClubInfo => {
      const name = $(info).find('a').text().trim();
      const url = $(info).find('a').attr('href') ?? '';
      const clubId = /-(?<id>\d+).html$/.exec(url)?.groups?.id?.toString() ?? '';
      const members = parseInt($(info).find('span.num').text().trim());
      const area = $(info).find('div.gray:nth-of-type(1)').text().trim();
      const src = $(imgs[index]).find('.threadimg60 img').attr('src')  ?? '';
      const img = src.startsWith('http') ? src : 'https://kaiqiuwang.cc/home/image/nologo.jpg';
      return { name, id: clubId, members, area, img, url: `${this.#baseURL}/home/${url}` };
    }
    const clubs = infos.map((e, i) => parseInfo(e, i));
    const total = parseInt($('#content > div:nth-of-type(1) div.page > em').text().trim()) || clubs.length;
    return { clubs, total };
  }

  public static async getClubInfo(clubId: string, force?: boolean) {
    if (!clubId) return null;
    const url = `${this.#baseURL}/home/space-mtag-tagid-${clubId}.html`;
    const key = `my-kaiqiuwang:club:${clubId}`;
    let html = await redis.get(key) ?? '';
    if (!html || html.includes('连接超时') || force) {
      html = await fetch(url, { headers: htmlRequestHeaders }).then(res => res.text());
      await redis.setex(key, 60 * 60 * 24, html);
    }
    const $ = cheerio.load(html);
    const name = $('h2.title a:nth-of-type(2)').text().trim();
    const src = $('#space_avatar img').attr('src') ?? '';
    const img = src.startsWith('http') ? src : 'https://kaiqiuwang.cc/home/image/nologo.jpg';
    const article = $('.article').text().trim();
    const geo = await this.#getClubLocation(clubId);
    return { id: clubId, name, img, article, geo };
  }

  static async fetchEventListHTML(clubId: string, page: number) {
    const url = `https://kaiqiuwang.cc/home/space-0-do-mtag-tagid-${clubId}-view-event-page-${page}.html`;
    const resp = await fetch(url, { headers: htmlRequestHeaders });
    return resp.text();
  }

  public static async listClubEvents(clubId: string, page = 1, force?: boolean) {
    if (!clubId) return {
      data: [],
      total: 0,
    };
    let html = await redis.get(`my-kaiqiuwang:events:${clubId}:${page}`);
    if (!html || html.includes('连接超时') || force) {
      html = await this.fetchEventListHTML(clubId, page);
      await redis.setex(`my-kaiqiuwang:events:${clubId}:${page}`, 60 * 3, html);
    }
    const data = await this.#parseEventList(html);
    return data;
  }

  static async #parseEventList(html: string) {
    const $ = cheerio.load(html);
    const blockList = $('div.event_list > ol > li');
    const list: IEventInfo[] = [];
    for (const block of blockList) {
      const titleEl = $(block).find('.event_title');
      const title = titleEl.text();
      const place = $(block).find('ul li:nth-of-type(2)').text().replace('比赛地点: \\t', '').trim();
      const eventPath = $(titleEl).find('a').attr('href') ?? '';
      const eventURL = `${this.#baseURL}/home/${eventPath}`;
      const matchId = /\S+-(\d+).html$/.exec(eventPath)?.[1] ?? '';
      const {
        startDate,
        isFinished,
        isProcessing,
        location,
        nums,
        see,
      } = await this.getEventInfo(matchId);
      const event: IEventInfo = {
        title,
        info: [`比赛时间：${startDate}`, place, [see, nums].join(' ')],
        url: eventURL,
        startDate,
        matchId,
        isFinished,
        isProcessing,
        location,
      }
      list.push(event);
    }
    const total = parseInt($('#mainarea > div.event_list > div > em').text().trim());
    return {
      data: list,
      total: total || list.length,
    };
  }

  static async #getClubLocation(clubId: string, force?: boolean) {
    const url = `${this.#baseURL}/home/space-mtag-tagid-${clubId}-view-map.html`;
    const key = `my-kaiqiuwang:location:${clubId}`;
    let html: string = await redis.get(key) || '';
    if (!html || html.includes('连接超时') || force) {
      html = await fetch(url, { headers: htmlRequestHeaders }).then(res => res.text());
      redis.setex(key, 60 * 60 * 24, html);
    }
    const $ = cheerio.load(html);
    const lng = Number($('#lng').val());
    const lat = Number($('#lat').val());
    if (!lng && !lat) return null;
    return { lng, lat };
  }

  public static async getEventInfo(eventId: string, force?: boolean): Promise<MatchSummary> {
    // https://kaiqiuwang.cc/home/space-event-id-175775.html
    const key = `my-kaiqiuwang:event-info:${eventId}`;
    const eventURL = `${this.#baseURL}/home/space-event-id-${eventId}.html`;
    let eventPage = await redis.get(key) ?? ''; 
    if (!eventPage || eventPage.includes('连接超时') || force) {
      eventPage = await fetch(eventURL, { headers: htmlRequestHeaders }).then(res => res.text() ?? '');
      await redis.setex(key, 60 * 3, eventPage);
    }
    const $ = cheerio.load(eventPage);
    const eventContent = $('.event_content').text().replace(/(\r|\n)/g, ',').split(',').filter(Boolean).join(' ');
    const { y, M, D, H, m} = /比赛开始:.*?(?<y>\d{4})年(?<M>\d{2})月(?<D>\d{2})日 \w+ (?<H>\d{2}):(?<m>\d{2})/
      .exec(eventContent)?.groups ?? {};
    const startDate = [y, M, D, H, m].every(Boolean) ? `${y}-${M}-${D} ${H}:${m}` : '0000-00';
    const title = $('#mainarea > h2 > a:nth-child(3)').text().trim();
    const nums = $('#content > div:nth-child(1) > div > div.event_content > ul > li:nth-child(2)').text();
    const see = /(?<see>\d+)\b/.exec($('#content > div:nth-child(1) > div > div.event_content > ul > li:nth-child(1)').text())?.groups?.see ?? '';
    const club = $('#sidebar .sidebox > p > a');
    const clubLink = club.attr('href') ?? '';
    const clubName = club.text() ?? '';
    const clubId = /-(?<clubId>\d+).html$/.exec(clubLink)?.groups?.clubId ?? '';
    const location = $('#content > div:nth-child(1) > div > div.event_content > dl > dd:nth-child(6) > a')
      .text().split(' ')?.[1]?.trim() ?? '';
    const startTime = dayjs.tz(startDate || new Date(), 'Asia/Tokyo');
    const overTime = startTime.add(6, 'hour');
    const now = dayjs();
    const isProcessing = now.isAfter(startTime) && now.isBefore(overTime);
    const isFinished = now.isAfter(overTime);
    if (isFinished) {
      await redis.set(key, eventPage);
    }
    console.debug('clubId', clubId);
    return {
      title,
      eventId,
      clubId,
      clubName,
      startDate,
      url: eventURL,
      isProcessing,
      isFinished,
      location,
      nums,
      see: see ? `${see} 次查看` : '',
    }
  } 

  public static async getMatchDetail(eventId: string, force?: boolean) {
    const url = `${this.#baseURL}/home/space.php?do=event&id=${eventId}&view=member&status=2`;
    const key = `my-kaiqiuwang:match-detail:${eventId}`;
    let html = await redis.get(key) ?? '';
    const info = await this.getEventInfo(eventId);
    if (!html || html.includes('连接超时') || force) {
      html = await fetch(url, { headers: htmlRequestHeaders }).then(res => res.text() || '');
      if (info.isFinished) {
        await redis.set(key, html);
      } else {
        await redis.setex(key, 60 * 5, html);
      }
    }
    return {
      detail: this.parseEventInfo(html, eventId),
      summary: info,
    };
  }

  private static parseEventInfo(html: string, eventId: string): EventDetail {
    const $ = cheerio.load(html);
    const title = $('h2.title a').text();
    const itemHref = $('.sub_menu a.active').attr('href') ?? '';
    const itemId = /\S+item_id=(\d+)$/.exec(itemHref)?.[1] ?? '';
    const players: Player[] = [];
    const playersEl = $('.thumb');
    for (const player of playersEl) {
      const img = $(player).find('.image img').attr('src') ?? '';
      const name = $(player).find('h6').text().trim();
      const uid = /space-(?<uid>\d+).html/.exec($(player).find('h6 a').attr('href') ?? '')?.groups?.uid ?? '';
      const info = $(player).find('p:nth-of-type(2)').text().replace(/\s/g, '');
      const score = /^.*?\b(\d+)\b/.exec(info)?.[1] ?? '';
      players.push({ name, avatar: img, score, info, uid });
    }
    return {
      itemId,
      eventId,
      title,
      players,
    }
  }

  public static async login(username: string, password: string) {
    const loginPageRes = await fetch('https://kaiqiuwang.cc/home/do.php?ac=668g&&ref');
    const cookies = loginPageRes.headers.getSetCookie().map(c => c.split(';')[0]).join('; ');
    console.debug('init cookies: ', cookies);
    let $ = cheerio.load(await loginPageRes.text());
    const loginsubmit = $('#loginsubmit').val()?.toString() || '';
    const formhash = $('#loginform > input[type=hidden]').val()?.toString() || '';
    const cookietime = $('#cookietime').val()?.toString() || '';
    const refer = "https://kaiqiuwang.cc/home/do.php?ac=668g&&ref";
    const formData = new FormData();
    formData.append('loginsubmit', loginsubmit);
    formData.append('cookietime', cookietime);
    formData.append('formhash', formhash);
    formData.append('username', username);
    formData.append('password', password);
    formData.append('refer', refer);
    const loginRes = await fetch("https://kaiqiuwang.cc/home/do.php?ac=668g&&ref", {
      "headers": {
        "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8",
        "accept-language": "zh-CN,zh;q=0.9",
        "cache-control": "no-cache",
        "content-type": "application/x-www-form-urlencoded",
        "pragma": "no-cache",
        "priority": "u=0, i",
        "sec-ch-ua": "\"Chromium\";v=\"146\", \"Not-A.Brand\";v=\"24\", \"Brave\";v=\"146\"",
        "sec-ch-ua-mobile": "?0",
        "sec-ch-ua-platform": "\"Windows\"",
        "sec-fetch-dest": "document",
        "sec-fetch-mode": "navigate",
        "sec-fetch-site": "same-origin",
        "sec-fetch-user": "?1",
        "sec-gpc": "1",
        "upgrade-insecure-requests": "1",
        "cookie": cookies,
        "Referer": "https://kaiqiuwang.cc/home/do.php?ac=668g"
      },
      "body": new URLSearchParams(Object.fromEntries(formData.entries())),
      "method": "POST"
    });
    const PHPSESSID = cookies.split('; ').filter(cookie => cookie.startsWith('PHPSESSID'))[0];
    const authCookies = [
      PHPSESSID,
      loginRes.headers
        .getSetCookie()
        .map(c => c.split(';')[0])
        .filter(cookie => !cookie?.includes('uchome_auth=deleted'))
        .join('; ')
    ].join('; ');
    console.debug('auth cookies', authCookies);
    const networkPageReq = await fetch("https://kaiqiuwang.cc/home/network.php", {
      "headers": {
        "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8",
        "accept-language": "zh-CN,zh;q=0.9",
        "cache-control": "no-cache",
        "pragma": "no-cache",
        "priority": "u=0, i",
        "sec-ch-ua": "\"Chromium\";v=\"146\", \"Not-A.Brand\";v=\"24\", \"Brave\";v=\"146\"",
        "sec-ch-ua-mobile": "?0",
        "sec-ch-ua-platform": "\"Windows\"",
        "sec-fetch-dest": "document",
        "sec-fetch-mode": "navigate",
        "sec-fetch-site": "none",
        "sec-fetch-user": "?1",
        "sec-gpc": "1",
        "upgrade-insecure-requests": "1",
        "cookie": authCookies,
      },
      "method": "GET",
      "redirect": 'follow',
    });
    const html = await networkPageReq.text();
    $ = cheerio.load(html);
    const success = $('#header_content > div.user_info > div.login_ext').text().includes('欢迎');
    const href = $('#header_content > div.user_info > div.login_ext > p > a.loginName').attr('href') || '';
    const uid = /\b(?<uid>\d+)\.html/.exec(href)?.groups?.uid;
    return { uid, success, cookies: authCookies };
  }

}