/**
 *
 * LOG 信息管理（上传和输出)
 * */
const WEBRTC_LOG="WebRtcLog-"
class LogManager {
  constructor() {

  }
  //捕获日志输出
  static catchConsole(){
    console.oldLog = console.log;
    console.log("捕获日志输出");
    console.log = (...args)=> {
      if(args[0]=="INFO:"||args[0]=="DEBUG:"||args[0]=="WARNING:"||args[0]=="ERROR:") {
        LogManager.addLog(LogManager.LOG,WEBRTC_LOG+JSON.stringify(args));
      }else {
        if(!args){
          return;
        }
        if(args.length==1){
          console.oldLog(args[0]);
        }else{
          console.oldLog(args);
        }
      }
    }
    console.warn = (...args)=>  {
      if(args[0]=="INFO:"||args[0]=="DEBUG:"||args[0]=="WARNING:"||args[0]=="ERROR:") {
        LogManager.addLog(LogManager.LOG,WEBRTC_LOG+JSON.stringify(args));
      }else {
        if(!args){
          return;
        }
        if(args.length==1){
          console.oldLog(args[0]);
        }else{
          console.oldLog(args);
        }
      }
    }
    console.error = (...args)=>  {
      if(args[0]=="INFO:"||args[0]=="DEBUG:"||args[0]=="WARNING:"||args[0]=="ERROR:") {
        LogManager.addLog(LogManager.LOG,WEBRTC_LOG+JSON.stringify(args));
      }else {
        if(!args){
          return;
        }
        if(args.length==1){
          console.oldLog(args[0]);
        }else{
          console.oldLog(args);
        }
      }
    }
  }
  /*
   * 添加需要上报的日志信息到队列中
   * _type
   * _msg
   * */
  static addLog(_type, _msg) {
    //无效的数据不上报
    if (!_msg) {
      return;
    }

    if (this.IS_OPEN_SEND_LOG == true || this.IS_OPEN_SEND_LOG == "true") {
      //显示格式20170729 16:42:00 INFO _msg
      let sendMsgStr = "";
      switch (_type) {
        case this.ERROR:
          sendMsgStr = this.getCurrentDateTime() + " ERROR " + _msg;
          //this.errorList.push(sendMsgStr);
          break;
        case this.WARN:
          sendMsgStr = this.getCurrentDateTime() + " WARN " + _msg;
          //this.warnList.push(sendMsgStr);
          break;
        case  this.LOG:
          sendMsgStr = this.getCurrentDateTime() + " INFO " + _msg;
         // this.logList.push(sendMsgStr);
          break;
        default:
          sendMsgStr = this.getCurrentDateTime() + " INFO " + _msg;
         // this.logList.push(sendMsgStr);
          break;
      }

      this.allLogList.push(sendMsgStr);
      let _this = this;
      clearTimeout(this.logDelayTimer);
      this.logDelayTimer = setTimeout(function () {
        _this.checkAndSendLog();
      }, 2000);
    }
  }

  static checkAndSendLog() {
    //发送日志
    /*this.sendLogToServer(LogManager.ERROR);
    this.sendLogToServer(LogManager.WARN);
    this.sendLogToServer(LogManager.LOG);*/
    //不区分日志类型，按时间先后顺序发送
    this.sendLogToServer(-1);
  }

  //发送log到服务器
  static sendLogToServer(_msgType) {
    if (!this.logUrl) {
      console.warn("日志服务器地址->"+this.logUrl);
      return;
    }
    const msgType = _msgType;
    let msgData = "";
    let tempArr = [];
    let msgLen = 0;
    msgLen = this.allLogList.length;
    for (let i = 0; i < msgLen; i++) {
      let item = this.allLogList.shift();
      if (item) {
        tempArr.push(item);
        msgData += item + "\n ";
      }
    }

    if (tempArr.length < 1 || !msgData) {
      //console.log("没有数据->不需要上报");
      return;
    }
    //console.log("上报的日志->", tempArr, msgData);
    //需要过滤掉&字符，否则Sass无法取数据
    msgData=msgData.replace(/&/g,"#");
    const userRoleAndUserId="["+this.userRole+"]_"+this.platform+"__"+this.userId;//身份+userId
    fetch(encodeURI(this.logUrl), {
      method: 'POST',
      headers: {
        "Content-Type": "application/x-www-form-urlencoded; charset=utf-8"
      },
      body: `classId=${this.classId}&userId=${userRoleAndUserId}&nodeId=${this.nodeId}&type=${msgType}&data=${msgData}`,
      timeout: 3000
    })
      .then(ret => {
        if (ret.ok) {
          return ret.json();
        } else {
          console.error(`保存日志信息-网络异常.状态码:${ret.status}`);
          throw '';
        }
      })
      .then(ret => {
        if (ret == 0) {
          //console.log('保存日志信息 完成');
          tempArr=[];
        } else {
          console.warn('保存日志信息 失败.', ret);
          this.allLogList=tempArr.concat(this.allLogList);
          tempArr=[];
        }
      })
      .catch(err => {
        console.error(`保存日志信息.状态码:${err}`);
        this.allLogList=tempArr.concat(this.allLogList);
        tempArr=[]
      });
  }

  //计算当前服务器时间
  static getCurrentDateTime() {
    let currentServerTime = new Date().getTime() - this.serverAndLoacTimeDistanc * 1000;//计算当前服务器时间
    let time=new Date(currentServerTime);
    //显示格式20170729 16:42:00 INFO _msg
    let timeStr = time.getFullYear()+"-"+(time.getMonth()+1)+"-"+time.getDate()+" "+time.getHours()+":"+time.getMinutes()+":"+time.getSeconds();
    return timeStr;
  }
}
LogManager.allLogList = [];//所有需要上报的日志列表
LogManager.logList = [];//日志上报列表
LogManager.warnList = [];//警告日志上报列表
LogManager.errorList = [];//错误日志上报列表

LogManager.serverAndLoacTimeDistanc = 0;//本地时间和服务器时间的差值(秒)
LogManager.classId = 0;//课堂号
LogManager.userId = "";//userId
LogManager.nodeId = 0;//nodeId
LogManager.userName = "";//用户名称
LogManager.userRole = "normal";//用户名称
LogManager.logUrl = "";//日志服务器地址 //http://log.3mang.com:8888
LogManager.platform="unknow";
LogManager.ERROR = 1;
LogManager.WARN = 2;
LogManager.LOG = 3;

LogManager.DATA = 5;
LogManager.logDelayTimer = 0;
LogManager.IS_OPEN_SEND_LOG = true;//是否上报日志
export default   LogManager;