<template>
	<view>
		<view class="content weightPages">
			<view class="title" v-if="isConnection == 0">连接中，请稍后</view>
			<view class="title" v-if="isConnection == 1">连接成功，请开始测量</view>
			<view class="title" v-if="isConnection == 2" @click="openBluetoothAdapter">连接失败，点击重新连接</view>
			<view class="text">{{text}}</view>
			<view class="text">{{textH}}</view>
			<view class="image">
				<image src="/BLEPages/static/H01pro.gif"></image>
			</view>
			<view class="tips">
				<text>提示：</text>
				<text>1.请确定设备是开机状态</text>
				<text>2.请确定手机蓝牙、位置信息已打开</text>
				<text>3.ios系统需打开设置—>应用—>微信里的蓝牙权限</text>
			</view>
		</view>
	</view>
</template>

<script>
	import {
		mapState
	} from "vuex";
	var myTime;
	export default {
		data() {
			return {
				text: "",
				textH: "",
				height: "",
				weight: "",
				imp: 0,
				uuid1: "",
				uuid2: "",
				uuid3: "",
				macAddr: "",
				deviceId: "",
				serviceId: "",
				type30: false,
				Unload: false,
				isConnection: 0, //是否连接成功
			}
		},
		computed: {
			...mapState(["user", "isConnected", "isBluetoothTyle", "appTheme"]),
			info() {
				return this.user
			}
		},
		onUnload: function() {
			let that = this
			if (!that.Unload) {
				that.stopBluetoothDevicesDiscovery() //取消蓝牙搜索
				clearTimeout(myTime);
				that.closeBLEConnection()
				that.closeBluetoothAdapter()
				uni.switchTab({
					url: "/pages/index/index"
				})
				console.log("返回首页")
			}
		},
		onLoad(options) {
			let that = this
			// 导航栏颜色
			uni.setNavigationBarColor({
				frontColor: '#ffffff',
				backgroundColor: this.appTheme,
			})
			// 
			that.text = ""
			that.textH = ""
			that.imp = 0
			if (options && options.deviceId) {
				that.deviceId = options.deviceId
				that.closeBLEConnection()
				that.closeBluetoothAdapter()
				that.openBluetoothAdapter()
			}

			that.onBLEConnectionStateChange()
			uni.onBluetoothAdapterStateChange(function(res) {
				that.$store.commit("changeBluetooth", res.available);
			})
		},
		watch: {
			isConnected: function() {
				let that = this
				if (!that.isConnected) {
					that.handleBack()
					that.isConnection = 2
				}
			},
			isBluetoothTyle: function() {
				let that = this
				if (!that.isBluetoothTyle) {
					that.handleBack()
					that.isConnection = 2
				}
			},
		},
		methods: {
			// 初始化蓝牙
			openBluetoothAdapter() {
				let that = this
				that.text = ""
				that.textH = ""
				uni.openBluetoothAdapter({
					success: e => {
						that.isConnection = 0
						that.startBluetoothDeviceDiscovery()
					},
					fail: e => {
						that.isConnection = 2
						that.$tools.msg("请确定设备是开机状态、手机蓝牙权限已打开！")
					}
				});
			},
			// 开始搜寻附近的蓝牙外围设备
			startBluetoothDeviceDiscovery() {
				let that = this
				uni.startBluetoothDevicesDiscovery({
					allowDuplicatesKey: false,
					interval: 500, //上报设备的间隔
					services: [
						"FFE0",
					],
					success: res => {
						that.isConnection = 0
						that.onBluetoothDeviceFound();
					},
					fail: res => {
						that.isConnection = 2
						that.$tools.msg("请确定设备是开机状态、手机蓝牙权限已打开！")
					}
				});
			},
			/**
			 * 发现外围设备
			 */
			onBluetoothDeviceFound() {
				var that = this;
				that.isConnection = 0
				uni.onBluetoothDeviceFound(res => {
					res.devices.forEach(device => {
						if (!device.name && !device.localName) {
							return
						}
						if (device.name.indexOf('AiLink_') != -1 || (device.localName && device.localName
								.indexOf('AiLink_') != -1)) {
							clearTimeout(myTime);
							let buff = device.advertisData.slice(-6)
							device.mac = new Uint8Array(buff) // 保存广播数据中的mac地址，这是由于iOS不直接返回mac地址
							let tempMac = Array.from(device.mac)
							tempMac.reverse()
							device.macAddr = that.$tools.ab2hex(tempMac, ':').toUpperCase()
							if (device.deviceId.indexOf(that.deviceId) != -1 || device.macAddr.indexOf(that
									.deviceId) != -1) {
								that.stopBluetoothDevicesDiscovery()
								that.macAddr = device.macAddr
								that.deviceId = device.deviceId;
								that.createBLEConnection()
								return;
							}
						}
					})
				});
				that.handleMyTime()
			},
			handleMyTime() {
				var that = this;
				myTime = setTimeout(function() {
					if (!that.macAddr) {
						clearTimeout(myTime);
						that.Unload = true
						that.isConnection = 2
						that.closeBLEConnection()
						that.closeBluetoothAdapter()
					}
				}, 20000);
			},
			/**
			 * 停止搜索蓝牙设备
			 */
			stopBluetoothDevicesDiscovery() {
				uni.stopBluetoothDevicesDiscovery({
					success: e => {
						console.log("停止搜索蓝牙设备", e)
					},
				});
			},
			// 监听蓝牙连接状态
			onBLEConnectionStateChange() {
				let that = this
				uni.onBLEConnectionStateChange(function(res) {
					console.log("监听蓝牙连接状态", res.connected)
					if (!res.connected) {
						that.Unload = true
						that.isConnection = 2
						clearTimeout(myTime);
						that.closeBLEConnection()
						that.closeBluetoothAdapter()
					}
					that.$store.commit("changeConnected", res.connected);
				})
			},
			// 连接蓝牙
			createBLEConnection() {
				let that = this;
				uni.createBLEConnection({
					deviceId: that.deviceId,
					success: res => {
						that.isConnection = 0
						that.getBLEDeviceServices();
					},
					fail: res => {
						that.isConnection = 2
						console.log("设备连接失败，请重新连接", res);
					}
				});
			},
			/**
			 * 获取设备的UUID
			 */
			getBLEDeviceServices() {
				let serviceList = [];
				let that = this;
				uni.getBLEDeviceServices({
					deviceId: that.deviceId,
					success: res => {
						console.log("获取设备的UUID成功", res)
						serviceList = res.services;
						for (let i = 0; i < serviceList.length; i++) {
							let service = serviceList[i];
							if (service.uuid.indexOf("FFE0") != -1) {
								that.isConnection = 1
								that.serviceId = service.uuid;
								that.getBLEDeviceCharacteristics();
								console.log("设备的FFE0的serviceId： " + that.serviceId);
								break;
							}
						}
					},
					fail: res => {
						console.log('获取设备的UUID失败:', res)
					}
				});
			},
			/**
			 * 获取指定服务的特征值
			 */
			getBLEDeviceCharacteristics() {
				let characteristicsList = [];
				let that = this;
				uni.getBLEDeviceCharacteristics({
					deviceId: that.deviceId,
					serviceId: that.serviceId,
					success: res => {
						console.log("服务的特征值成功", res)
						for (let i = 0; i < res.characteristics.length; i++) {
							let item = res.characteristics[i];
							if (item.uuid.indexOf('0000FFE1') != -1) {
								that.uuid1 = item.uuid //下发数据
							} else if (item.uuid.indexOf('0000FFE2') != -1) {
								that.uuid2 = item.uuid //监听数据
							} else if (item.uuid.indexOf('0000FFE3') != -1) {
								that.uuid3 = item.uuid //写入设置
							}
						}
						uni.notifyBLECharacteristicValueChange({
							deviceId: that.deviceId,
							serviceId: that.serviceId,
							characteristicId: that.uuid2,
							state: true,
						})
						uni.notifyBLECharacteristicValueChange({
							deviceId: that.deviceId,
							serviceId: that.serviceId,
							characteristicId: that.uuid3,
							state: true,
						})
						// that.sendData()
						uni.onBLECharacteristicValueChange(function(res) {
							let value = that.$tools.ab2hex(res.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("单位", value, dw)
							if (type == "10") {
								let data = parseInt(value.substring(13, 18), 16)
								let dw1 = "kg"
								let dw2 = "kg"
								if (dw == "1") {
									dw1 = "斤"
									dw2 = "jin"
								}
								if (dw == "4") {
									dw1 = "st:lb"
									dw2 = "st"
									data = 1 * data + 5
								}
								if (dw == "6") {
									dw1 = "lb"
									dw2 = "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.text = "您的实时体重是：" + data + dw1
								}
								if (typeInfo == "02") {
									that.text = "您的体重是：" + data + dw1
									that.weight = data + dw2
									console.log("稳定体重：", value, that.weight)
								}
							}
							if (type == "14") {
								that.height = parseInt(value.substring(10, 14), 16) / 10
								that.textH = "您的身高是：" + that.height + "cm"
								console.log("稳定身高：", that.height)
							}
							if (type == "11") {
								if (typeInfo == "03" || typeInfo == "04") {
									that.imp = parseInt(value.substring(17, 22), 16)
								}
								console.log("阻抗：", typeInfo, parseInt(value.substring(17, 22), 16))
							}
							if (type == "30") {
								console.log("测量完成", that.weight, that.imp, that.height)

								if (!that.type30) {
									if (that.imp == 0) {
										uni.showModal({
											title: '提示',
											content: "体脂测量失败，是否保存本次测量结果？",
											cancelText: "放弃",
											confirmText: "保存",
											success(res) {
												if (res.confirm) {
													that.imp = 0
													that.handleGetMeasure()
												} else {
													console.log("放弃保存")
													that.Unload = true
													that.closeBLEConnection()
													that.closeBluetoothAdapter()
													uni.switchTab({
														url: "/pages/index/index"
													})
												}
											}
										})
									} else {
										that.handleGetMeasure()
									}
									that.type30 = true
								}
							}
						});
					},
					fail: res => {
						console.log('获取特征值失败:', JSON.stringify(res))
					}
				})
			},
			// 身高体重体脂模式
			sendData() {
				let that = this
				let j = Number(26 + 3 + 6 + 1).toString(16)
				let str = "A9002603060100" + j.substr(j.length - 2, 2) + "9A"
				let buf = new Uint8Array(str.match(/[\da-f]{2}/gi).map(function(h) {
					return parseInt(h, 16)
				}))
				uni.writeBLECharacteristicValue({
					deviceId: that.deviceId,
					serviceId: that.serviceId,
					characteristicId: that.uuid1,
					value: buf.buffer,
					success: res => {
						console.log('下发指令成功', res.errMsg)
					},
					fail: res => {
						console.log("下发指令失败", res);
					},
				})
			},
			// 保存测量结果 
			handleGetMeasure() {
				let that = this
				that.$model.getmeasure({
					weight: that.weight,
					imp: that.imp,
					ecode: that.macAddr,
					height: that.height,
					familyid: that.info.familyid,
				}).then(res => {
					if (res.code == 0) {
						that.$store.dispatch("getUserInfo", {
							familyid: that.info.familyid,
						});
						that.$store.dispatch("getResult", {
							birthday: that.info.birthday,
							familyid: that.info.familyid,
							height: that.height,
							sex: that.info.sex,
						});
						that.$tools.msg("测量成功")
					} else {
						console.log("测量失败", res.message)
						that.$tools.msg(res.message)
					}
					that.Unload = true
					setTimeout(function() {
						that.closeBLEConnection()
						that.closeBluetoothAdapter()
						uni.switchTab({
							url: "/pages/index/index"
						})
					}, 200)
				})
			},
			handleBack(ind) {
				let that = this
				that.text = ""
				that.textH = ""
				that.Unload = true
				that.stopBluetoothDevicesDiscovery() //取消蓝牙搜索
				that.closeBLEConnection()
				that.closeBluetoothAdapter()
			},
			/**
			 * 断开蓝牙模块
			 */
			closeBluetoothAdapter() {
				let that = this;
				uni.closeBluetoothAdapter({
					success: res => {
						console.log('蓝牙模块关闭成功');
					}
				})
			},
			/**
			 * 断开蓝牙连接
			 */
			closeBLEConnection() {
				var that = this;
				uni.closeBLEConnection({
					deviceId: that.deviceId,
					success: res => {
						console.log('断开蓝牙连接成功');
					}
				});
			},
		},
	}
</script>

<style scoped lang="scss">
</style>