/// <reference path="main.d.ts" />

import qs from "./utils/qs";
import resetHistory from "./utils/resetHistory";

import handleWinError from "./funcs/handleWinError";
import updateUserinfo from "./funcs/updateUserinfo";
import updatePerformance from "./funcs/updatePerformance";

import { REPORT_TYPES } from "./constant";

// 是否可以检测重写 popstate
const hasPopState = "onpopstate" in window;

/**
 * 全部可用功能
 */
const Modules: TModule[] = ["error", "userinfo", "performance", "action"];

/**
 * 工具函数
 */
const Utils = { qs, resetHistory };

/**
 * 主类
 * @param params 初始化参数
 * @param overrideUserinfo 覆盖用户信息
 */
const Main = class {
  // 存放一些临时数据比如计时器
  private _actionTimer: any;

  debug: boolean = false;

  /**
   * 项目识别
   */
  appId: string | number;
  appName: string;

  /**
   * 启用功能
   */
  modules: TModule[] = ["error", "userinfo", "action"];

  /**
   * 收集用户信息
   */
  userinfo: IUserinfo = {
    url: "",
    history: [],
    title: "",
    agent: navigator.userAgent,
    platform: navigator.platform,
  };

  /**
   * 收集性能信息
   */
  performance: object = {};

  /**
   * 上报地址
   * @param params
   */
  reportUrl: string = "http://api-s1.dynv6.net:10010/kuririn/test";

  /**
   * 注入api请求数据的回调方法
   */
  injectAPI: Function = function () {
    return {};
  };

  /**
   * 匹配规则的res上报 { error_no: [334064, ...] }
   */
  matchAPI: object = {};

  /**
   * 构建初始化配置
   * @param params
   */
  constructor(params: IConstructor, overrideUserinfo?: IUserinfo) {
    if (hasPopState) {
      window.history.pushState = Utils.resetHistory("pushState");
      window.history.replaceState = Utils.resetHistory("replaceState");
      window.addEventListener(
        "pushState",
        this.func_onPopstate.bind(this),
        false
      );
      window.addEventListener(
        "replaceState",
        this.func_onPopstate.bind(this),
        false
      );
      window.addEventListener(
        "popstate",
        this.func_onPopstate.bind(this),
        false
      );
    }

    document.addEventListener("DOMContentLoaded", () => {
      // 确保body节点存在，在任意dom变动下触发最后一次即可
      document.body.addEventListener(
        "DOMSubtreeModified",
        this.func_actionAddEventListener.bind(this)
      );
    });

    this.appId = params.appId;
    this.appName = params.appName;

    if (params.debug) {
      this.debug = params.debug;
    }

    if (params.injectAPI) {
      this.injectAPI = params.injectAPI;
    }

    if (params.matchAPI) {
      this.matchAPI = params.matchAPI;
    }

    // 覆盖默认启用功能
    if (params.modules) {
      this.modules = params.modules.filter(
        (mod: any) => ~Modules.indexOf(mod)
      ) as TModule[];
    }

    // 覆盖默认上报地址
    if (params.reportUrl) {
      this.reportUrl = params.reportUrl;
    }

    // 覆盖用户信息
    if (overrideUserinfo) {
      this.userinfo = {
        ...this.userinfo,
        ...overrideUserinfo,
      };
    }

    // 逻辑追踪默认开启
    this.mod_logicTracker();

    // 激活
    this.modules.map((mod) => {
      this[`mod_${mod}`].apply(this, []);
    });
  }

  /**
   * log
   */
  protected func_log(...args) {
    if (!this.debug) return;
    console.log(...args);
  }

  /**
   * 处理全局错误
   */
  protected func_onError(event: ErrorEvent) {
    handleWinError(event).then((data) => this.func_report(data));
    return false;
  }

  /**
   * 当历史记录发生变化
   * @param event
   */
  protected func_onPopstate(event) {
    if (~this.modules.indexOf("userinfo")) {
      this.userinfo = updateUserinfo(event.type, this.userinfo);
    }
    if (~this.modules.indexOf("performance")) {
      this.performance = updatePerformance();
    }
    if (~this.modules.indexOf("action")) {
    }
    this.func_log("kuririn debug:", { ...this, injectAPI: this.injectAPI() });
  }

  /** 设置动作捕捉 */
  protected func_actionAddEventListener() {
    if (this._actionTimer) {
      clearTimeout(this._actionTimer);
    }
    this._actionTimer = setTimeout(() => {
      const actions: NodeList = document.querySelectorAll("[krin-eid]");
      Array.prototype.forEach.call(actions, (action) => {
        action.addEventListener("click", () => {
          this.func_report({
            type: REPORT_TYPES.ACTION,
            event: {
              id: action.getAttribute("krin-eid"),
              name: action.getAttribute("krin-ename"),
            },
          });
        });
      });
    }, 100);
  }

  /**
   * 处理上报
   * @param {Object} 上报的参数
   */
  protected func_report(params) {
    const reportData = {
      appId: this.appId,
      appName: this.appName,
      userinfo: this.userinfo,
      ...params,
    };
    this.func_log("kuririn report:", reportData);
    const xhr = new XMLHttpRequest();
    xhr.open("POST", this.reportUrl, true);
    xhr.setRequestHeader("Content-Type", "application/json");
    xhr.send(JSON.stringify(reportData));
  }

  /**
   * 注入原生ajax请求重写参数
   */
  protected func_injectXHR() {
    let url = "";
    let method = "";
    let res = "";
    let status = "";
    const xhrOpen = window.XMLHttpRequest.prototype.open;
    const xhrSend = window.XMLHttpRequest.prototype.send;
    const injectData = this.injectAPI();
    const injectDataQuery =
      typeof injectData === "string"
        ? Utils.qs({ _krin_: injectData })
        : Utils.qs(this.injectAPI());
    const root = this;
    window.XMLHttpRequest.prototype.open = function () {
      // 原请求数据
      url = arguments[1];
      method = arguments[0];

      // 非上报地址注入
      if (url !== root.reportUrl && injectDataQuery) {
        url += url.indexOf("?") !== -1 ? "&" : "?";
        url += injectDataQuery;
        arguments[1] = url;
      }
      // console.log("kuririn override xhr.open", { url, method }, arguments);
      xhrOpen.apply(this, [].slice.call(arguments));
    };
    window.XMLHttpRequest.prototype.send = function () {
      let reportData = {
        url,
        method,
        status,
        res,
        data: arguments[0] || {},
      };
      this.addEventListener("readystatechange", function () {
        if (reportData.url === root.reportUrl) return;
        if (this.readyState === 4) {
          reportData.res = this.response;
          reportData.status = this.status;
          if (this.status >= 400) {
            // http status code 不正常的上报
            return root.func_report({
              type: REPORT_TYPES.ERR,
              reason: "xhr status >= 400",
              error: reportData,
            });
          }
          try {
            const resJSON = JSON.parse(reportData.res);
            Object.keys(root.matchAPI).map((field) => {
              const values = root.matchAPI[field].map((v) => String(v));
              const fieldValueStr = String(resJSON[field]);
              if (resJSON[field] && values.indexOf(fieldValueStr) !== -1) {
                // 匹配规则接口上报
                root.func_report({
                  type: REPORT_TYPES.MATCH_RES,
                  match: `${field}=${fieldValueStr}`,
                  response: reportData,
                });
              }
            });
          } catch (e) {
            // 解析错误单独上报
            root.func_report({
              type: REPORT_TYPES.ERR,
              reason: "xhr response json parse",
              error: reportData,
            });
          }
        }
      });
      this.addEventListener("error", function () {
        // 上报
        if (reportData.url === root.reportUrl) return;
        root.func_report({
          type: REPORT_TYPES.ERR,
          reason: "xhr send error",
          error: reportData,
        });
      });
      // console.log("kuririn override xhr.send", reportData);
      xhrSend.apply(this, [].slice.call(arguments));
    };
  }

  /**
   * 模块：logicTracker
   * 依附应用自身 api 上报
   */
  mod_logicTracker() {
    this.func_log("kuririn: mod_logicTracker");
    this.func_injectXHR();
  }

  /**
   * 模块：行为事件捕捉上报
   */
  mod_action() {
    this.func_log("kuririn: mod_action");
  }

  /**
   * 模块：error
   * 捕捉全局错误上报
   */
  mod_error() {
    window.addEventListener("error", this.func_onError.bind(this), false);
  }

  /**
   * 模块：userinfo
   * 获取用户相关信息
   */
  mod_userinfo() {
    this.func_log("kuririn: mod_userinfo");
    // 基础用户数据
    this.userinfo.agent = navigator.userAgent;
  }

  /**
   * 模块：性能
   */
  mod_performance() {
    this.func_log("kuririn: mod_performance");
    this.performance = updatePerformance();
  }
};

export default Main;