bodyWeight/app.js

App({
	onLaunch() {
		this.initPpScale();
	},

	globalData: {
		// wx.request 请求的服务地址
		wxRequestUrl: "https://device.shuziweidao.com/gateway/",
		// wxRequestUrl: "http://192.168.1.12:8889/",

		// 秤的所有信息
		ppScale: {
			plugin: null,
			activeProtocol: null,
			domain: "http://device.shuziweidao.com:80/gateway",
			// domain: "http://192.168.1.12:8889",
			wifi: {
				ssid: "",
				password: ""
			},
			options: {
				key: "lefudc91611833e18d94",
				secret: "eQ50JYimMp0X7uhNLj6D3lTEk4TUUvEG7dvaqKM9t1U="
			},
			device: {
				setting: [{ 
					"advLength": 999, 
					"calorieStatus": 0, 
					"createBy": null, 
					"deviceAccuracyType": 2, 
					"deviceCalcuteType": 3, 
					"deviceConnectType": 2, 
					"deviceFuncType": 223,
					"deviceName": "CF568_G",
					"devicePowerType": 3, 
					"deviceProtocolType": 3, 
					"deviceType": 1, 
					"deviceUnitType": "0,1,11", 
					"id": 65, 
					"imgUrl": null, 
					"macAddressStart": 6, 
					"remark": null, 
					"sign": "FF", 
					"status": 0, 
					"uhStatus": 1, 
					"updateBy": null 
				}, { 
					"advLength": 999, 
					"calorieStatus": 0, 
					"createBy": null, 
					"deviceAccuracyType": 2, 
					"deviceCalcuteType": 3, 
					"deviceConnectType": 2, 
					"deviceFuncType": 223,
					"deviceName": "YX-B4-568-BW",
					"devicePowerType": 3, 
					"deviceProtocolType": 3, 
					"deviceType": 1, 
					"deviceUnitType": "0,1,11", 
					"id": 65, 
					"imgUrl": null, 
					"macAddressStart": 6, 
					"remark": null, 
					"sign": "FF", 
					"status": 0, 
					"uhStatus": 1, 
					"updateBy": null 
				}, { 
					"advLength": 999, 
					"calorieStatus": 0, 
					"createBy": null, 
					"deviceAccuracyType": 2, 
					"deviceCalcuteType": 4, 
					"deviceConnectType": 2, 
					"deviceFuncType": 65759, 
					"deviceName": "CF636_G", 
					"devicePowerType": 3, 
					"deviceProtocolType": 3, 
					"deviceType": 1, 
					"deviceUnitType": "0,1,2", 
					"id": 216, 
					"imgUrl": null, 
					"macAddressStart": 6, 
					"remark": null, 
					"sign": "FF", 
					"status": 0, 
					"uhStatus": 1, 
					"updateBy": null 
				}, { 
					"advLength": 999, 
					"calorieStatus": 0, 
					"createBy": null, 
					"deviceAccuracyType": 2, 
					"deviceCalcuteType": 4, 
					"deviceConnectType": 2, 
					"deviceFuncType": 65759, 
					"deviceName": "YX-B8-636-BW", 
					"devicePowerType": 3, 
					"deviceProtocolType": 3, 
					"deviceType": 1, 
					"deviceUnitType": "0,1,2", 
					"id": 216, 
					"imgUrl": null, 
					"macAddressStart": 6, 
					"remark": null, 
					"sign": "FF", 
					"status": 0, 
					"uhStatus": 1, 
					"updateBy": null 
				}, {
					"advLength": 999,
					"calorieStatus": 0,
					"createBy": null,
					"deviceAccuracyType": 2,
					"deviceCalcuteType": 4,
					"deviceConnectType": 2,
					"deviceFuncType": 223,
					"deviceName": "CF577",
					"devicePowerType": 3,
					"deviceProtocolType": 3,
					"deviceType": 1,
					"deviceUnitType": "0,1,11",
					"id": 51,
					"imgUrl": null,
					"macAddressStart": 6,
					"remark": null,
					"sign": "FF",
					"status": 0,
					"uhStatus": 1,
					"updateBy": null
				}], // 即将要搜索周边秤的配置
                list: [], // 根据配置搜索到秤的列表
                name: "",
				mac: null, // 选中的设备mac地址/SN码
				connection: null, // 默认选中连接的设备
                connectState: null, // 当前连接设备的状态
			}
        },

        _callbacks: {} // 用于存储所有 globalData 属性的监听回调
	},
	
	initPpScale() {
		this.globalData.ppScale.plugin = requirePlugin('ppScale-plugin');
		
        // 蓝牙连接状态监听
		this.globalData.ppScale.plugin.bus.subscribe("connectState", (res) => {
            console.log("app.js ===> connectState", res);
            this.setGlobalData('ppScale.device.connectState', res);

			// 连接失败则重新连接
			if (res == this.globalData.ppScale.plugin.BLUE_STATE.CONNECTFAILED) {
				this.reconnectDevice()
			}
			wx.hideLoading();
		});

        // 设备自动断开监听
		this.globalData.ppScale.plugin.bus.subscribe("deviceWillDisconnect", (res) => {
			console.log("app.js ===> deviceWillDisconnect", res);
            
            this.reconnectDevice();
		})
	},

	reconnectDevice() {
		this.globalData.ppScale.plugin.Blue.disconnect((disres) => {
			if (disres.errCode == 0) {
				this.globalData.ppScale.plugin.Blue.startBluetoothDevicesDiscovery();
			} else {
				this.reconnectDevice();
			}
		})
    },
    
    /**
     * 注册 globalData 某个属性的监听
     * @param {string} keyPath 要监听的 globalData 属性路径，例如 'ppScale.device.connectState'
     * @param {function} callback 属性变化时执行的回调函数 (newValue, oldValue) => {}
     */
    watch(keyPath, callback) {
        if (!this.globalData._callbacks[keyPath]) {
            this.globalData._callbacks[keyPath] = [];
        }
        this.globalData._callbacks[keyPath].push(callback);
    },

    /**
     * 取消 globalData 某个属性的监听
     * @param {string} keyPath 要取消监听的 globalData 属性路径
     * @param {function} callback 之前注册的回调函数
     */
    unwatch(keyPath, callback) {
        if (this.globalData._callbacks[keyPath]) {
            this.globalData._callbacks[keyPath] = this.globalData._callbacks[keyPath].filter(cb => cb !== callback);
        }
    },

    /**
     * 设置 globalData 的值并触发所有相关监听器
     * 支持点表示法设置嵌套属性，例如 'ppScale.device.connectState'
     * @param {string} keyPath 要设置的 globalData 属性路径
     * @param {*} value 要设置的新值
     */
    setGlobalData(keyPath, value) {
        const keys = keyPath.split('.');
        let current = this.globalData;
        let oldValue = undefined;

        // 遍历到目标属性的父级
        for (let i = 0; i < keys.length - 1; i++) {
            if (!current[keys[i]]) {
                current[keys[i]] = {}; // 如果路径不存在，创建空对象
            }
            current = current[keys[i]];
        }

        // 获取旧值
        oldValue = current[keys[keys.length - 1]];

        // 只有当值发生变化时才更新并通知
        if (oldValue !== value) {
            current[keys[keys.length - 1]] = value; // 设置新值

            // 触发监听器
            if (this.globalData._callbacks[keyPath]) {
                this.globalData._callbacks[keyPath].forEach(callback => {
                    callback(value, oldValue);
                });
            }
        }
    },
})