var server = require("http").createServer();
module.exports = class WebSocketServer {
  constructor() {
    this._pageMap = new Map();
    this._roomIDS = new Map();
    this._roomPerson = new Map()

    this._users = [];

  }

  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(3000, { origins: "*" });

    this.io.on("connection", (socket) => {
      let user = socket.handshake.query
      this._users.push(user)
      const roomId = user['roomId']
      const client_room = `${roomId}_client`
      let roomsPerson = this._roomPerson.get(roomId) || []
      socket.join(client_room);
      // 一个房间只允许存在一个场景码
      if (!user['isClient'] && roomsPerson.filter(item => item.scene_num !== user.scene_num).length === 0) {
        socket.join(roomId, () => {
          roomsPerson.push(user)
          this._roomPerson.set(roomId, roomsPerson)
          // 只派发非小程序端的socket连接数及其user数据
          console.log(user.scene_num, user.role)
          this.io.to(roomId).emit('vr_request', { persons: roomsPerson.filter(item => !item.isClient) });
          this.io.to(client_room).emit('vr_request', { persons: roomsPerson.filter(item => !item.isClient) });
        });
      }
      
      
      socket.on('startCall', () => {
        socket.broadcast.to(roomId).emit('answer', { user })
        socket.broadcast.to(client_room).emit('answer', { user })
      })

      socket.on('stopCall', () => {
        socket.broadcast.to(roomId).emit('putup', { user })
        socket.broadcast.to(client_room).emit('putup', { user })
      })



      socket.on("getJson", (data) => {
        if (roomId) {
          this.io.to(roomId).emit("action",  data.content.action);
          this.io.to(roomId).emit("vr_response", data);
        }
      });

      socket.on("disconnect", (reason) => {
        let roomsPerson = this._roomPerson.get(roomId) || []
        // 断开连接的把roomsPerson中的user去掉
        roomsPerson = roomsPerson.filter(item => item !== user)
        this._roomPerson.set(roomId, roomsPerson)
        if (!user.isClient) {
          this.io.to(roomId).emit('vr_request', { persons: roomsPerson.filter(item => !item.isClient) });
          this.io.to(client_room).emit('vr_request', { persons: roomsPerson.filter(item => !item.isClient) });
        }
      });
      socket.on("error", function (reason) {
        console.log("异常关闭", reason)
      });
      return this;

    })

  }

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

};