import base from "@/common/config/domain.js"
class websocketUtil {
	constructor(token, time) {
		this.token = token;
		this.is_open_socket = false; //避免重复连接
		// this.url = url; //地址
		// this.data = null;
		this.reconnect_time=6000;//意外断开超过多少秒重连
		//心跳检测
		this.timeout = time; //多少秒执行检测
		this.sendheartInterval = null; //心跳发送计时器
		this.reconnectTimeOut = null; //重连之后多久再次重连计时器
		this.onHeartInterval = null; //心跳检测计时器
		this.heart_nownum=0;//心跳最新
		this.heart_oldnum=0;//上次心跳
		this.offline_time=0;//断开的毫秒数
		this.need_reconnect=false;//监听到关闭后，是否需要重连
		this.ac_close=false;//是否主动关闭 如果是主动断开不会自动重连，需要手动调用connectSocketInit
		this.is_reconnect=false;//是否正在重连
		
		try {
			return this.connectSocketInit();
		} catch (e) {
			// console.log("catch");
			this.is_open_socket = false;
			this.socketReconnect();
		}
	}

	// 初始化websocket链接
	connectSocketInit() {
		this.heart_nownum=0;//心跳最新
		this.heart_oldnum=0;//上次心跳
		this.offline_time=0;
		// console.log("this.sendheartInterval",this.sendheartInterval);
		
		if(this.reconnectTimeOut){
			clearTimeout(this.reconnectTimeOut);
			this.reconnectTimeOut=null;
		}
		//停止发送心跳
		if(this.sendheartInterval){
			clearInterval(this.sendheartInterval);
			this.sendheartInterval=null;
		}
		//停止监听心跳
		if(this.onHeartInterval){
			clearInterval(this.onHeartInterval);
			this.onHeartInterval=null;
		}
		
		if(this.socketTask){
			this.socketTask=null;
		}
		let url = `${base.wsUrl}/websocket/socketServer.do?token=${this.token}`; //地址
		// console.log("链接地址",url);
		this.socketTask = uni.connectSocket({
			url: url,
			success: () => {
				console.log("正准备建立websocket中...");
				// uni.showLoading({
				// 	title:"创建连接中..."
				// })
				// 返回实例
				return this.socketTask;
			},
			fail:(res)=>{
				console.log("创建websocket失败...",res);
			}
		});
		this.socketTask.onOpen((res) => {
			console.log("WebSocket连接成功！");
			uni.hideLoading();
			this.is_open_socket = true;
			this.need_reconnect=false;//监听到关闭后，是否需要重连
			this.ac_close=false;//是否主动关闭
			this.is_reconnect = false;
			//开始发送心跳
			this.start();
			// 开启检测心跳
			this.onHeart();
			
			//监听接受消息
			this.socketTask.onMessage((res) => {
				// console.log('websocket接受到的消息',res);
				let dJson = res.data;
				
				let data = JSON.parse(dJson);
				// console.log('websocket接受res.data',data);
				// data.msg = data.msg ? JSON.parse(data.msg) : data.msg;
				data.msg = data.msg;
				
				if(data.opt == 'HEALTH'){
					//接受心跳
					// console.log('接受心跳成功');
					this.heart_nownum++;
				}else{
					// console.log("接受到的数据", data);
					// 发射事件到页面
					// console.log("data--------------",data,data.opt);
					uni.$emit(data.opt, data.msg);
				}
				
			});
			
		});
		
		// 监听关闭链接
		this.socketTask.onClose((res) => {
			console.log("WebSocket关闭链接！",res);
			this.is_reconnect = false;
			
			//服务器重启导致websocket关闭
			this.socketTask=null;
			// if(!this.ac_close || this.need_reconnect){
			// 	//监听到不是主动断开 或者 需要主动重连的
			// 	this.is_open_socket = false;
			// 	this.socketReconnect();
			// }
			
		});
		//监听链接错误
		this.socketTask.onError((err) => {
			console.log("WebSocket错误！",err);
			// console.log("this.ac_close",this.ac_close);
			// console.log("this.need_reconnect",this.need_reconnect);
			
			if(!this.ac_close || this.need_reconnect){
				//监听到不是主动断开 或者 需要主动重连的
				this.is_open_socket = false;
				this.is_reconnect = false;
				this.socketReconnect();
			}
		});
	}

	//发送消息
	send(value) {
		// console.log("value",value);
		// 注：只有连接正常打开中 ，才能正常成功发送消息
		this.socketTask.send({
			data: value,
			success:(res)=> {
				// console.log("消息发送成功",res);
			},
			fail:(res)=>{
				// console.log("消息发送失败",res);
			}

		});
	}
	//重新连接
	socketReconnect() {
		if(this.is_reconnect  ||  this.is_open_socket) return;//正在重连  或者已连接 截断
		this.is_reconnect=true;
		this.ac_close=false;//重置是否主动断开，方便重连后判断
		// console.log("开始重连")
		// console.log('is_open_socket',this.is_open_socket);
		//停止发送心跳
		if(this.sendheartInterval){
			clearInterval(this.sendheartInterval);
			this.sendheartInterval=null;
		}
		//停止监听心跳
		if(this.onHeartInterval){
			clearInterval(this.onHeartInterval);
			this.onHeartInterval=null;
		}
		//链接是关闭状态下
		if (!this.is_open_socket) {
			// uni.showLoading({
			// 	title:"重接中..."
			// })
			this.reconnectTimeOut = setTimeout(() => {
				this.connectSocketInit();
			}, 1000);
		}
	}
	//关闭websocket
	close(ac_close=true){
		if(!this.is_open_socket) return;//链接未链接成功下，不能主动关闭
		// console.log("主动断开")
		//停止发送心跳
		if(this.sendheartInterval){
			clearInterval(this.sendheartInterval);
			this.sendheartInterval=null;
		}
		//停止监听心跳
		if(this.onHeartInterval){
			clearInterval(this.onHeartInterval);
			this.sendheartInterval=null;
		}
		//是否主动断开
		this.ac_close=ac_close;
		// console.log("主动关闭",this.ac_close)
		if(this.socketTask){
			this.socketTask.close({
				success:(res)=>{
					console.log('主动关闭返回1',res)
					this.is_open_socket = false;
					if(!this.ac_close || this.need_reconnect){
						// console.log("主动关闭")
						//监听到不是主动断开 或者 需要主动重连的
						this.socketReconnect();
					}
				},
				fail:(res)=>{
					// console.log('主动关闭返回2')
				}
			});
		}else{
			//服务器关闭导致没有websocket
			this.reconnectTimeOut = setTimeout(() => {
				this.connectSocketInit();
			}, 1000);
		}
	}
	//开启心跳检测
	start() {
		this.sendheartInterval = setInterval(() => {
			// let data = { healthCheck:'Y'};
			let data = {
				"opt":"HEALTH",
				"msg":{"healthCheck":"Y"}
			};
			
			// console.log(this.data);
			// console.log('发送心跳');
			this.send(JSON.stringify(data));
		}, this.timeout);
	}
	//监听心跳
	onHeart(){
		this.onHeartInterval = setInterval(() => {
			if(this.heart_nownum>this.heart_oldnum){
				// console.log("websocket正常",this.heart_nownum,this.heart_oldnum);
				//正常连接中
				this.heart_oldnum=this.heart_nownum;
				// console.log("websocket正常",this.heart_oldnum);
				
				
				// //测试
				// if(this.heart_oldnum>5){
				// 	this.close();
				// }
			}else{
				console.log("心跳检测到websocket断开",this.heart_nownum,this.heart_oldnum);
				this.offline_time+=this.timeout*2;
				
				if(this.offline_time>=this.reconnect_time){
					//开始重连
					// console.log("需要重连-------");
					this.need_reconnect=true;
					this.close(false);
					// this.socketReconnect();
				}
			}
		}, this.timeout*2);
	}
}

module.exports = websocketUtil;