// MQTT工具包 - 兼容H5、App、微信小程序
// 参考：https://blogs.seecsdn.cn/online/2025-09-27/0ecf1401e23b25be5f8c7e4377d8b5dd.html

let mqtturl;

// #ifdef H5
mqtturl = "ws://122.51.194.184:8083/mqtt";
import * as mqtt from "mqtt/dist/mqtt.min.js";
// #endif

// #ifdef APP-PLUS
mqtturl = "wx://122.51.194.184:8083/mqtt";
import * as mqtt from "mqtt/dist/mqtt.min.js";
//#endif

// #ifdef MP-WEIXIN
mqtturl = "wx://122.51.194.184:8083/mqtt";
import * as mqtt from "mqtt/dist/mqtt.min.js";
//#endif

// #ifdef MP-ALIPAY
mqtturl = "alis://122.51.194.184:8083/mqtt";
import * as mqtt from "@/utils/mqtt.min.js";
//#endif

function messageid2() {
	// 2位随机数
	return Math.floor(Math.random() * (99 - 10)) + 10;
}

var client;

// 创建MQTT连接
const createMqtt = () => {
	let options = {
		keepalive: 30,
		clientId: `mobile-inspection-system-${messageid2()}`, // 客户端ID
		protocolId: 'MQTT',
		username: "dmbroker",
		password: "qwer1234",
		protocolVersion: 4,
		clean: true,
		reconnectPeriod: 1000, // 恢复自动重连，1秒重连一次
		connectTimeout: 5000, // 5s超时时间
		// topic: "HDYDCJ_01_DOWN",
		topic: "HDYDCJ_01_UP",
		rejectUnauthorized: false,
		// #ifdef MP-ALIPAY
		my: my,//注意这里的my
		//#endif
	}

	try {
		if (!client) {
			console.log('🔧 开始创建MQTT连接...');
			console.log('🔧 MQTT URL:', mqtturl);
			console.log('🔧 连接选项:', options);
			console.log('🔧 当前平台:', 
				// #ifdef H5
				'H5'
				// #endif
				// #ifdef APP-PLUS
				'APP-PLUS'
				// #endif
				// #ifdef MP-WEIXIN
				'MP-WEIXIN'
				// #endif
				// #ifdef MP-ALIPAY
				'MP-ALIPAY'
				// #endif
			)
			
			// 显示连接loading
			uni.showLoading({
				title: 'MQTT连接中...',
				mask: true
			});
			
			client = mqtt.connect(mqtturl, options);
			initEventHandleMqtt(options.topic);
		} else {
			console.log('🔧 MQTT客户端已存在，跳过创建');
		}
	} catch (e) {
		console.error('❌ MQTT连接创建失败:', e);
		console.error('❌ 错误详情:', e.message);
		console.error('❌ 错误堆栈:', e.stack);
		
		// 连接失败时隐藏loading
		uni.hideLoading();
		// uni.showToast({
		// 	title: 'MQTT连接失败',
		// 	icon: 'error',
		// 	duration: 3000
		// });
		
		// 重置客户端，允许重试
		client = null;
	}
};

//建立连接  
const initEventHandleMqtt = (topicUrl) => {
    // 当连接成功时触发
	client.on("connect", function() {
		uni.hideLoading();
		console.log("✅ MQTT连接成功");
		
		// 显示连接成功提示
		uni.showToast({
			title: 'MQTT连接成功',
			icon: 'success',
			duration: 2000
		});
		
		//订阅主题
		client.subscribe(topicUrl, function(err) {
			if (err) {
				console.error("❌ MQTT订阅主题失败:", err);
				uni.showToast({
					title: '订阅主题失败',
					icon: 'error',
					duration: 3000
				});
			} else {
				console.log("✅ MQTT订阅主题成功:", topicUrl);
			}
		});
	});

	//如果mqttws订阅主题成功，那么这里就是当接收到自己订阅主题的处理逻辑
	client.on("message", function(topic, message) {
		try {
			console.log('📨 收到MQTT消息:');
			console.log('主题:', topic);
			console.log('消息内容:', message.toString());
			
			// 获取信息
			const mqttData = JSON.parse(message.toString());
			console.log('📋 解析后的数据:', mqttData);
			console.log('数据类型:', Array.isArray(mqttData) ? '数组' : '对象');
			
			// 如果是数组，打印数组信息
			if (Array.isArray(mqttData)) {
				console.log('📋 数组长度:', mqttData.length);
				mqttData.forEach((item, index) => {
					console.log(`📦 数组[${index}]:`, item);
					if (item.Device) {
						console.log(`🔍 设备类型[${index}]: ${item.Device}`);
					}
				});
			}
			
			// 传递信息
			uni.$emit("mqttData", mqttData);
		} catch (error) {
			console.error('❌ 处理MQTT消息失败:', error);
			console.error('原始消息:', message.toString());
		}
	});

	// 当断开连接后，经过重连间隔时间重新自动连接到 Broker 时触发
	client.on('reconnect', function() {
		console.log('🔄 MQTT重新连接中...');
		uni.showLoading({
			title: "重新连接中..."
		});
	});

	// 当客户端无法成功连接时或发生解析错误时触发，参数 error 为错误信息
	client.on("error", function(err) {
		console.error('❌ MQTT连接错误:', err);
		uni.hideLoading();
		uni.showToast({
			title: 'MQTT连接错误',
			icon: 'error',
			duration: 3000
		});
	});

	// 在收到 Broker 发送过来的断开连接的报文时触发
	client.on('disconnect', function() {
		console.log('⚠️ MQTT连接断开');
		uni.hideLoading();
	});

	// 在断开连接以后触发
	client.on("close", function() {
		console.log('🔌 MQTT连接关闭');
		uni.hideLoading();
	});

	// 当客户端下线时触发
	client.on("offline", function() {
		console.log('📴 MQTT客户端离线');
		uni.hideLoading();
	});
};

//强制断开Mqtt
const closeMqtt = () => {
	if (client) {
		console.log('🔌 强制断开MQTT连接');
		uni.hideLoading();
		client.end();
		client = null;
	}
};

// 使用pingResp心跳判断客户端和服务端是否还在连接着
const judgeBeat = () => {
	if (client && client.pingResp === false) {
		console.log('💔 MQTT心跳停止，准备重连');
		uni.showLoading({
			title: "心跳停止，等待重连..."
		});
		closeMqtt();
		createMqtt();
	}
};

// 获取连接状态
const getConnectionStatus = () => {
	if (!client) {
		console.log('🔍 连接状态检查: 客户端不存在');
		return false;
	}
	
	const isConnected = client.connected;
	console.log('🔍 连接状态检查:', {
		clientExists: !!client,
		connected: isConnected,
		readyState: client.stream ? client.stream.readyState : 'unknown'
	});
	
	return isConnected;
};

// 手动重连函数
const manualReconnect = () => {
	console.log('🔄 手动触发重连');
	closeMqtt();
	setTimeout(() => {
		createMqtt();
	}, 1000);
};

export {
	createMqtt,
	closeMqtt,
	judgeBeat,
	getConnectionStatus,
	manualReconnect,
	client,
}