export { CONNECT_STATUS,MQTT_EVENT_TYPE,MQTT_EVENT_CALL,MQTT_EVENT_PUBLISH,MQTT_SUBSCRIBE,MQTT_EVENTS_CALL,MQTT_PUBLISH_TOPIC,MQTT_CONNECT_OPTS } from "../interface.uts"
import Paho from './mqtt.js'
// var client = new Paho.MQTT.Client(location.hostname, Number(location.port), "clientId");
// mqtt测试服务器
// https://console.hivemq.cloud/
// https://github.com/eclipse/paho.mqtt.javascript
// https://eclipse.dev/paho/files/jsdoc/Paho.MQTT.Client.html

type MqttConnectOptions = {
	userName?:string,
	password?:string,
	useSSL?:boolean,
	keepAliveInterval?:number,
	timeout?:number,
	reconnect?:boolean,
	onSuccess?:any,
	onFailure?:any
}


export class xMqtt {
	mqtt : MqttAndroidClient | null = null;
	mqttConnectOptions : MqttConnectOptions | null = null;
	connectStatus:CONNECT_STATUS = 'wait'
	events = new Map<string,MQTT_EVENTS_CALL>();
	constructor(){
		
	}
	/**
	 * @param ulr {string} 连接地址
	 * @param clientIdStr {string} 客户端id
	 * @param username {string|null} 用户名称，如果不需要，设置为null即可
	 * @param password {string|null} 登录密码，如果不需要，设置为null即可
	 */
	async create(opts:MQTT_CONNECT_OPTS):xMqtt {
		let t = this;
		this.mqttConnectOptions = {} as MqttConnectOptions;
		this.mqttConnectOptions.userName = opts.userName;
		this.mqttConnectOptions.password = opts.passWord;
		this.mqttConnectOptions.useSSL = opts.useSSL;
		this.mqttConnectOptions.keepAliveInterval = opts.keepAliveInterval;
		this.mqttConnectOptions.timeout = opts.timeout;
		
		this.mqttConnectOptions.reconnect = opts.reconnect;
		this.mqtt = new Paho.Client( `${opts.protocol}${opts.server}:${opts.port}${opts.path}`, opts.clientId);
		this.mqttConnectOptions.onSuccess = ()=>{
			t.buildCallEvents('open',null,'连接成功')
		};
		this.mqttConnectOptions.onFailure = ()=>{
			t.buildCallEvents('error',null,'连接失败')
		};
		
		this.mqtt.onConnectionLost  = ()=>{
			t.buildCallEvents('dissconnect',null,'连接断开')
		};
		this.mqtt.onMessageArrived = (evt)=>{
			
			t.buildCallEvents('message',evt.topic,evt.payloadString)
		};
		this.connectStatus = 'wait'
		this.mqtt.connect(this.mqttConnectOptions)
		
		return this;
	}

	/**
	 * @param type {MQTT_EVENT_TYPE} 事件名称
	 * @param call {MQTT_EVENT_CALL} 事件回调
	 */
	addEventListener(type:MQTT_EVENT_TYPE,call:MQTT_EVENT_CALL):string{
		let id = Date.now().toString()+(Math.random()*100).toString()
		this.events.set(id,
			{
				type,
				value:call
			} as MQTT_EVENTS_CALL
		)
		
		return id;
	}
	/**
	 * @param id {string} addEventListener返回的事件id
	 */
	removeEventListener(id:string):xMqtt{
		this.events.delete(ids[i])
		return this;
	}
	private buildCallEvents(type:MQTT_EVENT_TYPE,toppic:string|null,str:string){
		this.events.forEach((value:MQTT_EVENTS_CALL,key:string)=>{
			if(value.type == type){
				value.value(type,toppic,str)
			}
		})
	}
	connect():xMqtt{
		
		this.mqtt?.connect(this.mqttConnectOptions);
		return this;
	}
	/**
	 * 订阅
	 * @param data {MQTT_SUBSCRIBE[]} 订阅的消息数组
	 */
	subscribe(data:MQTT_SUBSCRIBE[]):xMqtt{
		let t = this;
		if(this.mqtt == null) return this;
		for(let i=0;i<data.length;i++){
			
			this.mqtt.subscribe(data[i].topic,{
				qos:data[i].qos,
				onSuccess(){
					console.log("订阅成功")
				}
			});
		}
		
		return this;
		
	}
	
	/**
	 * 推送消息
	 * @param message {MQTT_EVENT_PUBLISH}
	 * @param call ()=>void 推送消息成功时的回调【web端永为真】
	 */
	publish(message:MQTT_PUBLISH_TOPIC,call:MQTT_EVENT_PUBLISH):xMqtt{
		if(this.mqtt == null) return this;
		this.mqtt!.publish(message.topic,message.message,message.qos,true);
		call(true)
		return this;
	}
	/**
	 * 取消订阅
	 * @param topics {string[]} 主题数组
	 */
	unsubscribe(topics:string[]):xMqtt{
		let t = this;
		if(this.mqtt == null||topics.length==0) return this;
		for(let i=0;i<topics.length;i++){
			this.mqtt!.unsubscribe(topics[i],{
				onSuccess(){
					console.log("取消订阅成功")
				}
			});
		}
		
		return this;
	}
	/**
	 * 断开连接
	 */
	disconnect():xMqtt{
		if(this.mqtt == null) return this;
		this.mqtt!.disconnect()
		return this;
	}
	
}