import axios from "axios";
import fs from "fs";
import path from "path";
import JSON5 from "json5";
import { timestampToDate, loopCall, keywordsInclude } from "./utils.js";
import config from "./config.js";
import { SQLiteMessageQueue } from "./sqlite.js";
import * as cheerio from "cheerio";

class Third {
  constructor(jsonMap) {
    this.axiosInstance = axios.create({ timeout: 30000, maxRedirects: 5 });
    this.axiosInstance.interceptors.request.use((config) => {
      // 添加cookie到请求头
      const cookieString = Array.from(this.cookiePair.entries())
        .map(([name, value]) => `${name}=${value}`)
        .join("; ");
      config.headers.Cookie = cookieString;
      // console.log(config);
      return config;
    });
    this.axiosInstance.interceptors.response.use(
      (response) => {
        // 更新cookie到请求头
        let cookieArr = response.headers["set-cookie"] || [];
        this.extractCookie(cookieArr);
        return response;
      },
      (error) => {
        return Promise.reject(error);
      }
    );
    this.cookiePair = new Map();
    // this.csrfToken = "";
    this.jsonMap = jsonMap;
    console.log("三方平台 爬虫启动...");
    this.queue = new SQLiteMessageQueue();
    this.start();
  }

  async start() {
    try {
      await this.init();
    } catch (err) {
      console.error("启动失败:", err);
    }
  }
  async init() {
    for (let item of this.jsonMap) {
      let announcements = this.queue.getAnnouncementsBySpider(item.name);
      if (announcements.length > 0) {
        this.loopFetchIncrement(item);
      } else {
        this.loopFetchFull(item);
      }
    }
  }
  async initializeCookie() {
    try {
      let headers = {
        headers: {
          Accept: "text/plain, */*; q=0.01",
          "Accept-Language": "zh-CN,zh;q=0.9",
          "Cache-Control": "no-cache",
          "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8",
          Origin: "https://www.chinabidding.com",
          Pragma: "no-cache",
          Priority: "u=1, i",
          Referer: "https://www.chinabidding.com/search/proj.htm",
          "Sec-Ch-Ua":
            '"Not)A;Brand";v="8", "Chromium";v="138", "Google Chrome";v="138"',
          "Sec-Ch-Ua-Mobile": "?0",
          "Sec-Ch-Ua-Platform": '"macOS"',
          "Sec-Fetch-Dest": "empty",
          "Sec-Fetch-Mode": "cors",
          "Sec-Fetch-Site": "same-origin",
          "User-Agent":
            "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36",
          "X-Requested-With": "XMLHttpRequest",
        },
      };
      const homeResponse = await this.axiosInstance.get(
        "https://www.chinabidding.com/search/proj.htm",
        headers
      );
    } catch (err) {
      console.log("err", err);
      throw err;
    }
  }
  extractCookie(cookieArr) {
    for (let cookie of cookieArr) {
      let [key, value] = cookie.split(";")[0].split("=");
      this.cookiePair.set(key, value);
    }
    // console.log(this.cookiePair);
  }
  // 全量爬取
  loopFetchFull(props) {
    console.log("开始全量爬取");
    try {
      loopCall(this.getInfo.bind(this), {
        time: config.fullFetchTime,
        pagenumber: 1,
        additional: props.options,
        stopWhen: (pagenumber, result) => {
          return (
            pagenumber >= result.pages || pagenumber >= config.pageNumberLimit
          );
        },
        readyForNext: (pagenumber, result) => {
          props.info.push(...result.info);
          return pagenumber + 1;
        },
        complete: (result) => {
          props.info.push(...result.info);
          console.log(`爬取完成，共获取 ${props.info.length} 条有效数据`);
          try {
            if (props.info.length > 0) {
              this.queue.saveAnnouncements(props.name, props.info);
              this.queue.addMessage(props.name, props.info);
            }
          } catch (error) {
            console.error("数据库操作失败:", error);
          }
          this.loopFetchIncrement(props);
        },
      });
    } catch (error) {
      console.error(`${props.options.name}全量爬取失败:`, error);
    }
  }
  loopFetchIncrement(props) {
    console.log("开始增量爬取");
    try {
      loopCall(this.getInfo.bind(this), {
        time: config.incrementFetchTime, // 5分钟间隔
        pagenumber: 1,
        additional: props.options,
        readyForNext: (pagenumber, result) => {
          try {
            let newInfo = this.queue.filterNewAnnouncements(
              props.name,
              result.info
            );
            // 存在新数据
            if (newInfo.length > 0) {
              console.log(`发现 ${newInfo.length} 条新数据`);
              // props.info.push(...newInfo);
              this.queue.saveAnnouncements(props.name, newInfo);
              // this.writeFile(props);
              this.queue.addMessage(props.name, newInfo);
              // 全是新数据，继续下一页
              if (newInfo.length === result.info.length) {
                return pagenumber + 1;
              } else {
                // 有部分重复数据，重新从第一页开始
                return 1;
              }
            } else {
              console.log("没有发现新数据，继续监控...");
              return 1; // 重新从第一页开始
            }
          } catch (error) {
            console.error("数据库操作失败:", error);
          }
        },
      });
    } catch (error) {
      console.error(`${props.options.name}增量爬取失败:`, error);
    }
  }

  async getNoticeDetail(url) {
    try {
      let result = await axios.get(url);
      return result.data;
    } catch (err) {
      return "err";
    }
  }
  async getInfo(pagenumber = 1, config) {
    let info = [];
    console.log(`${config.name}--获取第 ${pagenumber} 页数据...`);
    let result = await this.getList(pagenumber, config);
    if (result[0]) {
      // 出错, 记录错误日志
      console.error("获取页面数据失败: ", result[0]);
      return { pages: 0, info: [] };
    } else {
      let pages = 3;
      let html = result[1];
      const $ = cheerio.load(html);
      $(".as-pager-body li").each((index, element) => {
        let idmatch = $(element)
          .find(".as-pager-item")
          .attr("href")
          .match(/\/bidDetail\/(\d+)\.html/);
        let id = idmatch ? idmatch[1] : "";
        let name = $(element).find(".txt").attr("title");

        let url = $(element).find(".as-pager-item").attr("href");
        if (keywordsInclude(name)) {
          console.log("处理项目：", name);
          info.push({
            id: id,
            name: name,
            urls: url,
            publishTime: "--",
            endTime: "--",
          });
        }
      });
      return { pages, info };
    }
  }
  async getList(pagenumber, config) {
    let data = config.data;
    data.currentPage = pagenumber;
    let headers = {
      Accept: "text/plain, */*; q=0.01",
      "Accept-Language": "zh-CN,zh;q=0.9",
      "Cache-Control": "no-cache",
      "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8",
      Origin: "https://www.chinabidding.com",
      Pragma: "no-cache",
      Priority: "u=1, i",
      Referer: "https://www.chinabidding.com/search/proj.htm",
      "Sec-Ch-Ua":
        '"Not)A;Brand";v="8", "Chromium";v="138", "Google Chrome";v="138"',
      "Sec-Ch-Ua-Mobile": "?0",
      "Sec-Ch-Ua-Platform": '"macOS"',
      "Sec-Fetch-Dest": "empty",
      "Sec-Fetch-Mode": "cors",
      "Sec-Fetch-Site": "same-origin",
      "User-Agent":
        "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36",
      "X-Requested-With": "XMLHttpRequest",
    };
    try {
      const response = await this.axiosInstance({
        url: config.url,
        data,
        method: "post",
        headers,
      });
      let result = response.data;
      return [null, result];
    } catch (err) {
      console.log("cookie不对");
      try {
        await this.initializeCookie();
        const retryResponse = await this.axiosInstance({
          url: config.url,
          data,
          method: "post",
          headers,
        });
        let result = retryResponse.data;
        return [null, result];
      } catch (retryErr) {
        return [retryErr, null];
      }
    }
  }
}

new Third([
  {
    name: "机电项目招投标【招标公告】",
    info: [],
    options: {
      name: "机电项目招投标【招标公告】",
      url: "https://www.chinabidding.com/search/proj.htm",
      data: {
        fullText: "",
        pubDate: "",
        infoClassCodes: "(0105 0103)",
        normIndustry: "",
        zoneCode: "",
        fundSourceCodes: "",
        poClass: "BidNotice",
        rangeType: "",
        currentPage: 1,
      },
    },
  },
]);
new Third([
  {
    name: "机电项目招投标【招标变更公告】",
    info: [],
    options: {
      name: "机电项目招投标【招标变更公告】",
      url: "https://www.chinabidding.com/search/proj.htm",
      data: {
        fullText: "",
        pubDate: "",
        infoClassCodes: "(0106 0104)",
        normIndustry: "",
        zoneCode: "",
        fundSourceCodes: "",
        poClass: "BidNotice",
        rangeType: "",
        currentPage: 1,
      },
    },
  },
]);