const { log } = require('console');

var app = require('express')();
var http = require('http').createServer(app);
var io = require('socket.io')(http);


app.get('/', (req, res) => {
    res.send('<h1>Hello world</h1>');
});

var onlineUserList = []


//如果有客户端连接了 connection
io.on('connection', (socket) => {
    socket.on("login", function(res) {
        if (onlineUserList.length == 0) {
            onlineUserList.push(res);
            socket.emit("LoginSuccess", res);
        } else {
            var u = onlineUserList.filter(v => {
                if (v.name == res.name) {
                    return v
                }
            });

            if (u.length != 0) {
                socket.emit("userNameExists");
            } else {
                onlineUserList.push(res);
                socket.emit("LoginSuccess", res);
            }
        }
    });
  
    socket.on("JoinRoom",function(res) {
        socket.join(res.roomid);
        var Online = onlineUserList.filter(v=> {
            if (v.roomid == res.roomid) {
                return v
            }
        });
        io.in(res.roomid).emit("OnLineUserList", Online);
        io.in(res.roomid).emit("WelcomeUser", `欢迎用户${res.name}加入群聊`);
    });

    socket.on("shake",function(res) {
        console.log("shake1: ",res);
        socket.to(res.roomid).emit("addShake", "");
    })

    socket.on("sendMessage",function(res) {
        console.log("用户的聊天内容：", res);
        socket.to(res.roomid).emit('SetMessage', res);
    })

});


http.listen(1314, () => {
    console.log('listening on *:1314');
});