const util = require("../../utils/util");
const {
	inArray,
	ab2hex
} = util
Page({
	data: {
		devices: [],
		connected: false,
		cmd: '',
		name: '',
		weight: "",
		height: "",
		text: "",
		imp0: '',
		imp1: '',
		imp2: '',
		imp3: '',
		imp4: '',
		imp5: '',
		imp7: '',
		uuid1: null,
		uuid2: null,
		uuid3: null,
		deviceId: null,
	},
	onLoad: function() {},
	// 初始化蓝牙模块
	openBluetoothAdapter() {
		wx.openBluetoothAdapter({
			success: (res) => {
				console.log('openBluetoothAdapter success', res)
				wx.showToast({
					title: '蓝牙连接中',
					icon: "none"
				})
				this.startBluetoothDevicesDiscovery()
			},
			fail: (res) => {
				if (res.errCode === 10001) {
					wx.showToast({
						title: '请打开蓝牙',
						icon: "none"
					})
					// 监听本机蓝牙状态变化的事件
					wx.onBluetoothAdapterStateChange((res) => {
						console.log('onBluetoothAdapterStateChange', res)
						if (res.available) {
							this.startBluetoothDevicesDiscovery()
						}
					})
				}
			}
		})
	},

	// 开始搜寻附近的蓝牙外围设备
	startBluetoothDevicesDiscovery() {
		if (this._discoveryStarted) {
			return
		}
		this._discoveryStarted = true
		wx.startBluetoothDevicesDiscovery({
			allowDuplicatesKey: true,
			interval: 1000, //上报设备的间隔
			services: [
				"FFE0",
			],
			success: (res) => {
				console.log('startBluetoothDevicesDiscovery success', res)
				this.onBluetoothDeviceFound()
			},
		})
	},
	// 停止搜寻附近的蓝牙外围设备
	stopBluetoothDevicesDiscovery() {
		wx.stopBluetoothDevicesDiscovery()
	},

	// 找到新设备的事件
	onBluetoothDeviceFound() {
		wx.onBluetoothDeviceFound((res) => {
			res.devices.forEach(device => {
				if (!device.name && !device.localName) {
					return
				}
				if (device.name.indexOf('AiLink_') != -1) {
					wx.stopBluetoothDevicesDiscovery() //搜索到名称为“AiLink_”的蓝牙后，停止搜寻附近的蓝牙
					const foundDevices = this.data.devices
					const idx = inArray(foundDevices, 'deviceId', device.deviceId)
					const data = {}
					let buff = device.advertisData.slice(-6)
					device.mac = new Uint8Array(buff) // 保存广播数据中的mac地址，这是由于iOS不直接返回mac地址
					let tempMac = Array.from(device.mac)
					tempMac.reverse()
					device.macAddr = ab2hex(tempMac, ':').toUpperCase()
					if (idx === -1) {
						data[`devices[${foundDevices.length}]`] = device
					} else {
						data[`devices[${idx}]`] = device
					}
					this.setData(data)
				}
			})
		})
	},
	// 连接低功耗蓝牙设备
	createBLEConnection(e) {
		wx.showLoading({
			title: '连接中',
		})
		const ds = e.currentTarget.dataset
		const index = ds.index
		this._device = this.data.devices[index]
		const deviceId = ds.deviceId
		const name = ds.name
		this.mac = ds.mac
		wx.createBLEConnection({
			deviceId,
			success: (res) => {
				this.setData({
					connected: true,
					name,
					deviceId,
				})
				console.log("createBLEConnection:success")
				this.onBLEConnectionStateChange()
				this.getBLEDeviceServices(deviceId)
			},
			fail: res => {
				wx.hideLoading()
				wx.showToast({
					title: '连接失败',
					icon: 'none'
				})
			}
		})
	},
	//监听蓝牙连接状态
	onBLEConnectionStateChange() {
		wx.onBLEConnectionStateChange((res) => {
			if (!res.connected) {
				setTimeout(() => {
					wx.showToast({
						title: '连接已断开',
						icon: 'none'
					})
				}, 500)
				this.setData({
					connected: false,
					devices: [],
					weight: "",
					height: "",
					text: "",
					imp: "",
					imp0: '',
					imp1: '',
					imp2: '',
					imp3: '',
					imp4: '',
					imp5: '',
					imp7: '',
				})
			}
		})
	},

	// 获取蓝牙设备的 serviceId
	getBLEDeviceServices(deviceId) {
		wx.getBLEDeviceServices({
			deviceId,
			success: (res) => {
				for (let i = 0; i < res.services.length; i++) {
					if (res.services[i].isPrimary && res.services[i].uuid.indexOf('FFE0') > -1) {
						wx.showLoading({
							title: '获取设备的UUID成功',
						})
						this.getBLEDeviceCharacteristics(deviceId, res.services[i].uuid)
						return
					}
				}
			}
		})
	},

	// 获取蓝牙设备某个服务中所有特征值(characteristic)
	/**
	 * read: true读,write: true写,notify: true广播
	 */
	getBLEDeviceCharacteristics(deviceId, serviceId) {
		let that = this
		that._deviceId = deviceId
		that._serviceId = serviceId
		that._device.serviceId = serviceId
		wx.hideLoading()
		wx.getBLEDeviceCharacteristics({
			deviceId,
			serviceId,
			success: (res) => {
				console.log('getBLEDeviceCharacteristics success', res.characteristics)
				wx.showLoading({
					title: '获取特征值成功',
				})
				for (let i = 0; i < res.characteristics.length; i++) {
					let item = res.characteristics[i];
					if (item.uuid.indexOf('FFE1') != -1) {
						that.data.uuid1 = item.uuid //主服务 UUID
					} else if (item.uuid.indexOf('FFE2') != -1) {
						that.data.uuid2 = item.uuid //写入设置
						that.notifyBLECharacteristicValue(deviceId, serviceId, item.uuid)
					} else if (item.uuid.indexOf('FFE3') != -1) {
						that.data.uuid3 = item.uuid //监听数据
					}
				}
				wx.hideLoading()
			},
			fail(res) {
				console.error('getBLEDeviceCharacteristics', res)
			}
		})
	},
	//解析蓝牙返回数据 
	notifyBLECharacteristicValue(deviceId, serviceId, notifyId) {
		let that = this
		wx.notifyBLECharacteristicValueChange({
			state: true, // 启用 notify 功能
			deviceId: deviceId,
			serviceId: serviceId,
			characteristicId: notifyId,
			success(res) {
				wx.onBLECharacteristicValueChange((characteristic) => {
					let value = ab2hex(characteristic.value, "");
					let num = value.substring(18, 19)
					let dw = value.substring(19, 20)
					let type = value.substring(8, 10)
					let typeInfo = value.substring(10, 12)
					console.log("type", type)
					if (type == "01") { // 称重模式
						let data = parseInt(value.substring(13, 18), 16)
						let dw1 = "kg"
						if (dw == "1") {
							dw1 = "斤"
						}
						if (dw == "4") {
							dw1 = "st:lb"
						}
						if (dw == "6") {
							dw1 = "lb"
						}
						if (num == "1") {
							data = parseInt(value.substring(13, 18), 16) / 10
						}
						if (num == "2") {
							data = parseInt(value.substring(13, 18), 16) / 100
						}
						if (num == "3") {
							data = parseInt(value.substring(13, 18), 16) / 1000
						}
						if (typeInfo == "01") {
							that.setData({
								weight: "实时体重是：" + data + dw1
							})
						}
						if (typeInfo == "02") {
							that.setData({
								weight: "稳定体重是：" + data + dw1
							})
						}
					}
					if (type == "02") { //阻抗
						let mcu = value.substring(12, 14)
						console.log("typeInfo", typeInfo)
						if (typeInfo == "02") {
							that.setData({
								imp0: "阻抗值测量失败"
							})
						} else if (typeInfo == "03") {
							if (mcu == "00") {
								let imp0 = parseInt(value.substring(14, 22), 16)
								that.setData({
									imp0: "双脚阻抗：" + imp0
								})
							}
							if (mcu == "01") {
								let imp1 = parseInt(value.substring(14, 22), 16)
								that.setData({
									imp1: "双手阻抗：" + imp1
								})
								console.log("双手", imp1)
							}
							if (mcu == "02") {
								let imp2 = parseInt(value.substring(14, 22), 16)
								that.setData({
									imp2: "左手阻抗：" + imp2
								})
								console.log("左手阻抗", imp2)
							}
							if (mcu == "03") {
								let imp3 = parseInt(value.substring(14, 22), 16)
								that.setData({
									imp3: "右手阻抗：" + imp3
								})
								console.log("右手阻抗", imp3)
							}
							if (mcu == "04") {
								let imp4 = parseInt(value.substring(14, 22), 16)
								that.setData({
									imp4: "左脚阻抗：" + imp4
								})
								console.log("左脚阻抗", imp4)
							}
							if (mcu == "05") {
								let imp5 = parseInt(value.substring(14, 22), 16)
								that.setData({
									imp5: "右脚阻抗：" + imp5
								})
								console.log("右脚阻抗", imp5)
							}
							if (mcu == "07") {
								let imp7 = parseInt(value.substring(14, 22), 16)
								that.setData({
									imp7: "右全身阻抗：" + imp7
								})
							}
						}
					}
					if (type == "05") { //身高
						let height = parseInt(value.substring(14, 18), 16) / 10
						let dw1 = "cm"
						if (dw == "01") {
							dw1 = "inch"
						}
						if (dw == "02") {
							dw1 = "ft-in"
						}
						if (typeInfo == "02") {
							that.setData({
								height: "身高：" + height + "单位：" + dw1
							})
						} else if (typeInfo == "03" || typeInfo == "04") {
							that.setData({
								height: "身高测量失败"
							})
						}

					}
				})
			},
			fail(res) {
				console.error('getBLEDeviceCharacteristics', res)
			}
		})
	},

	/**
	 * 断开蓝牙模块
	 */
	closeBluetoothAdapter() {
		wx.closeBluetoothAdapter()
		this._discoveryStarted = false
		wx.showToast({
			title: '断开蓝牙模块',
			icon: 'none'
		})
		this.setData({
			devices: [],
			weight: "",
			height: "",
			text: "",
			imp: "",
			imp0: '',
			imp1: '',
			imp2: '',
			imp3: '',
			imp4: '',
			imp5: '',
			imp7: '',
		})
	},
	// 断开与低功耗蓝牙设备的连接
	closeBLEConnection() {
		wx.closeBLEConnection({
			deviceId: this._deviceId
		})
		wx.showToast({
			title: '断开蓝牙连接',
			icon: 'none'
		})
		this.setData({
			connected: false,
			devices: [],
			text: "",
			height: "",
			weight: "",
			imp: "",
			imp0: '',
			imp1: '',
			imp2: '',
			imp3: '',
			imp4: '',
			imp5: '',
			imp7: '',
		})
	},

});