// socket + http
const { createServer } = require("http");
const express = require("express");
const { Server } = require("socket.io");
const { fork } = require('child_process');
class VideoServer {
  constructor() {
    this.Contrl = null
    this.socket = null
    this.initSoket();
  }
  // socket 服务
  initSoket() {
    const app = express();
    app.use(express.static("./web"));
    const httpServer = createServer(app);
    const io = new Server(httpServer, {
      cors: {
        origin: ["*"],
      },
    });
    // 中间件
    io.use((socket, next) => {
      const { roomID, name } = socket.handshake.auth;
      if (roomID !== "feiCar" && (name !== "car" || name !== "ctrl"))
        return next(new Error("invalid token"));
      socket.join(roomID);
      socket.broadcast.to(roomID).emit('joined', { name: name, roomID: roomID })
      next();
    });
    io.on("connection", (socket) => {
      const { roomID, name } = socket.handshake.auth;
      console.log(name, "连接");

      // 监听其它信息
      socket.on("msg", (data) => {
        // 转发消息
        socket.broadcast.to(roomID).emit("msg", data);
      });

      // 监听离开
      socket.on("disconnect", () => {
        // 转发离开
        socket.broadcast.to(roomID).emit("leaved", {
          name: name,
          roomID: roomID
        });
        socket.leave(roomID)
        this.socket = null
        console.log(name, '断开连接');
      })

      // 控制服务
      this.socket = socket
    });
    httpServer.listen(7896);
    console.log("服务开启成功7896");
    this.initContrl()
  }
  // 控制服务
  initContrl() {
    this.Contrl = fork('./contrl.js')
    this.Contrl.on('message', (msg) => {
      if (this.socket && this.socket.connected) {
        console.log('用户连接可发送', msg);
      }
      console.log('parent get message: ' + msg);
    })
  }
}
new VideoServer();