var socketServer = require('ws').Server;
var wss = new socketServer({
	port: 8080
});

var app = require('express')();
var server = require('http').Server(app);

var socketServer = require('ws').Server;
var wss = new socketServer({server: server, port: 8080});

wss.on('connection', function (client) {
    client.on('message', function (_message) {
    	var _messageObj = JSON.parse(_message);
        //status = 1 表示正常聊天
        _messageObj.status = 1;
    	this.message = _messageObj;
        //把客户端的消息广播给所有在线的用户
        wss.broadcast(_messageObj);
    });

    // 退出聊天  
    client.on('close', function() {  
        try{
            this.message = this.message || {};
            // status = 0 表示退出聊天
            this.message.status = 0;
            //把客户端的消息广播给所有在线的用户
            wss.broadcast(this.message);  
        }catch(e){  
            console.log('刷新页面了');  
        }  
    });  
});

//定义广播方法
wss.broadcast = function broadcast(_messageObj) {  
    wss.clients.forEach(function(client) { 
        client.send(JSON.stringify(_messageObj))
    });  
}; 

if(!WebSocket){
    $('.connState').text("您的浏览器不支持WebSocket");
    return false;
} 
//连接 socket 服务器
var socket = new WebSocket('ws://localhost:8080');

//监听 socket 的连接
socket.onopen = function(){
    $('.connState').text("服务已连接 ws://localhost:8080");
}

//监听服务端断开
socket.onclose = function(){
    $('.connState').text("服务已断开");
    socket = null;
}

//监听服务端异常
socket.onerror = function(){
    $('.connState').text("服务错误");
    socket = null;
}

//监听服务端广播过来的消息
socket.onmessage = function(msg){
    var msgObj = JSON.parse(msg.data);
    if(msgObj.status == 0){
        $('<p>' + msgObj.nickname + '[' + msgObj.time + ']退出聊天</p>').appendTo('.msgList');
    } else{
        $('<p>' + msgObj.nickname + '[' + msgObj.time + ']：' + msgObj.message + '</p>').appendTo('.msgList');
    }
}

var sendMessage = function(_mess){
    if(socket){
        var myDate = new Date();
        var now = myDate.getMonth() + '-' + myDate.getDate() + ' ' + myDate.getHours() + ':' + myDate.getMinutes() + ':' + myDate.getSeconds();				
        
        var mesObj = {
            nickname: $('#nickName').val(),
            message: _mess || $('#mesBox').val(),
            time: now
        }
        //向服务端发送消息
        socket.send(JSON.stringify(mesObj));
    }			
}