var server = require("http").createServer();

const EVENT = {
  someOneInRoom: 'someOneInRoom',
  someOneLeaveRoom: 'someOneLeaveRoom',
  startCall: 'startCall',
  stopCall: 'stopCall',
  webSyncAction: 'webSyncAction',
  clientSyncAction: 'clientSyncAction',
  action: 'action',
  roomClose: 'roomClose',
  roomIn: 'roomIn',
  changeVoiceStatus: 'changeVoiceStatus'
}

module.exports = class WebSocketServer {
  constructor() {
    this._pageMap = new Map();
    this._roomIDS = new Map();
    this._roomPerson = new Map()

  }

  create() {
    this.io = require("socket.io")(server, {
      path: "/vr-node",
      serveClient: false,
      // below are engine.IO options
      pingInterval: 10000,
      pingTimeout: 5000,
      cookie: false,
    });

    server.listen(3030, { origins: "*" });

    this.io.on("connection", (socket) => {
      let user = socket.handshake.query
      const { roomId, userId, sceneNum, isClient, role, userLimitNum } = user
      const webRoomId = `${roomId}${sceneNum}`
      const clientRoom = userId ? `${userId}` : `${sceneNum}${roomId}`
      // 加入客户端与H5单独的通讯房间 
      socket.join(clientRoom, () => {
        console.log('join success', clientRoom, user)
      })

      // 若有房间人数限制
      if (userLimitNum && this._roomPerson.get(roomId) && this._roomPerson.get(roomId).length >= userLimitNum) {
        socket.emit('roomInFail', { type: 'full', msg: '房间人数已满' })
        return this
      }

      // 若已结束、房间已关闭
      if ( this._roomPerson.get(roomId) && !this._roomPerson.get(roomId).find(item => item.role === 'leader')) {
        socket.broadcast.to(roomId).emit(EVENT.roomClose)
        return
      }

      // 加入所有连接数的通讯房间
      socket.join(roomId, () => {
        // 只有h5才能加入H5端的房间
        if (!isClient) {
          let roomsPerson = this._roomPerson.get(roomId) || []
          roomsPerson.push(user)
          this._roomPerson.set(roomId, roomsPerson)
        }
      })
      let clientPerson = this._roomPerson.get(clientRoom) || []
      if (isClient) {   
        clientPerson.push(user)
        this._roomPerson.set(clientRoom, clientPerson)
      } else {
        clientPerson.forEach(item => {
          if (item.userId === user.userId) {
            user.avatar = item.avatar
            user.voiceStatus = item.voiceStatus
          }
        })
      }
      
      
      socket.on(EVENT.startCall, () => {
        console.log('startcall', user)
        if (!isClient) {
          socket.join(webRoomId, () => {
            console.log('join webRoom', user)
            let roomsPerson = this._roomPerson.get(roomId) || []
            socket.emit(EVENT.roomIn, { roomsPerson })
            socket.broadcast.to(roomId).emit(EVENT.someOneInRoom, { user, roomsPerson })
          })
          
        }
      })

      socket.on(EVENT.stopCall, () => {
        console.log('stopCall', user)
        socket.leave(roomId)
        if (role === 'leader') {
          socket.broadcast.to(roomId).emit(EVENT.roomClose)
        }
        if (!isClient) {
          socket.leave(webRoomId)
          let roomsPerson = this._roomPerson.get(roomId) || []
          roomsPerson = roomsPerson.filter(item => item.userId !== user.userId)
          this._roomPerson.set(roomId, roomsPerson)
          socket.broadcast.to(roomId).emit(EVENT.someOneLeaveRoom, { user, roomsPerson })
        }
      })

      socket.on(EVENT.webSyncAction, (data) => {
        socket.broadcast.to(webRoomId).emit(EVENT.webSyncAction, data)
      })

      socket.on(EVENT.action, (data) => {
        socket.broadcast.to(roomId).emit(EVENT.action, data)
      })

      socket.on(EVENT.clientSyncAction, (data) => {
        console.log('client', clientRoom, data)
        socket.broadcast.to(clientRoom).emit(EVENT.clientSyncAction, data)
      })

      socket.on(EVENT.changeVoiceStatus, data => {
        let _roomPerson = this._roomPerson.get(roomId) || []
        user.voiceStatus = data.status
        console.log(_roomPerson, '_roomPerson')
        _roomPerson.forEach(item => {
          if (item.userId === user.userId) {
            item.voiceStatus = user.voiceStatus
          }
        })
        this._roomPerson.set(roomId, _roomPerson)
        console.log(_roomPerson, data, user)
        socket.broadcast.to(roomId).emit(EVENT.changeVoiceStatus, {roomsPerson: _roomPerson})
      })

      socket.on("disconnect", (reason) => {
        console.log(reason, 'reason')
        socket.leave(roomId)
        if (!isClient) {
          // if (role === 'leader' && reason !== 'ping timeout') {
          //   socket.broadcast.to(roomId).emit(EVENT.roomClose)
          // }
          let roomsPerson = this._roomPerson.get(roomId) || []
          roomsPerson = roomsPerson.filter(item => item.userId !== user.userId)
          this._roomPerson.set(roomId, roomsPerson)
          // socket.broadcast.to(roomId).emit(EVENT.someOneLeaveRoom, { user, roomsPerson })
          socket.leave(webRoomId)
          socket.leave(roomId)
        }
      })

      socket.on('reconnect', () => {
        console.log('重连', user)
        socket.join(roomId)
        if (!isClient) {
          let roomsPerson = this._roomPerson.get(roomId) || []
          roomsPerson.push(user)
          this._roomPerson.set(roomId, roomsPerson)
          socket.join(webRoomId)
          socket.join(roomId)
        }
      })

      socket.on("error", function (reason) {
        console.log("异常关闭", reason)
      })
      return this;

    })

  }

  close() {
    this.server.disconnect(true);
  }

};