// pages/bluetooth/bluetooth.js
import { BluetoothMode } from '../../models/bluetooth.js'
import {System} from '../../models/system.js'
const bluetooth = new BluetoothMode()
const system = new System()
Page({/*** 页面的初始数据*/data: {devicesData: [],sys: {}},/*** 生命周期函数--监听页面加载*/onLoad: function (options) {const res=system.getSync()this.setData({sys:res})},// 点击连接蓝牙设备connectionBluetooth: function (e) {const deviceId = e.currentTarget.dataset.idbluetooth.connect(deviceId).then(res => {wx.setStorageSync('serviceData', res)// 停止搜索 减少资源
      bluetooth.stop()wx.navigateTo({url: '../device/device?name=' + e.currentTarget.dataset.name,})})},// 扫描设备
  startBluetooth() {this._initBluetooth()},//初始化蓝牙适配器_initBluetooth: function () {// 调用蓝牙子类的初始化事件bluetooth.initBluetooth().then(res => {// 监听发现新的设备bluetooth.on('newDevice',data => {this.setData({devicesData:data})})})},})

import {PublishtionModel
} from 'publishtion.js'const tips = {0: '正常',10000: '未初始化蓝牙适配器',10001: '当前蓝牙适配器不可用,请打开手机蓝牙后重试',10002: '没有找到指定设备',10003: '连接失败',10004: '没有找到指定服务',10005: '没有找到指定特征值',10006: '当前连接已断开',10007: '当前特征值不支持此操作',10008: '其余所有系统上报的异常',10009: 'Android 系统特有，系统版本低于 4.3 不支持 BLE',10012: '连接超时',10013: '连接 deviceId 为空或者是格式不正确',20000: '蓝牙适配器不可用，蓝牙可能被关闭',
}class BluetoothMode extends PublishtionModel {//获取搜索到的蓝牙设备data = []//初始化蓝牙适配器
  initBluetooth() {return new Promise((resolve, reject) => {this._initBluetooth().then(res => {this._getBluetoothState()return this._search()}).then(res => {// 开启监听 this._onDFound()resolve(res)})})}_initBluetooth() {return new Promise((resolve, reject) => {wx.openBluetoothAdapter({success: res => {console.log(res)console.log('初始化蓝牙模块成功')resolve()},fail: error => {console.log(error)this._showTips(error.errCode)}})})}// 连接低功耗蓝牙
  connection(deviceId) {return new Promise((resolve, reject) => {wx.createBLEConnection({deviceId,success: res => {console.log(res)this._setDevice(deviceId)// 暂停搜索this.stop()resolve({res,deviceId})},fail: res => {console.log(res)}})})}connect(deviceId) {return new Promise((resolve, reject) => {this.connection(deviceId).then(res => {return this.getServiceList(res.deviceId)}).then(res => {let promiseList = []for (var i in res.services) {promiseList.push(this.getBLEDeviveChar({deviceId,serviceId: res.services[i].uuid}))}return Promise.all(promiseList)}).then(res => {resolve(res)})})}// 启用低功耗蓝牙设备特征值变化时的 notify 功能，订阅特征值。// 注意：必须设备的特征值支持 notify 或者 indicate 才可以成功调用。
  notify({deviceId,serviceId,characteristicId}) {return new Promise((resolve, reject) => {wx.notifyBLECharacteristicValueChange({state: true, // 启用 notify 功能// 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接
        deviceId,// 这里的 serviceId 需要在 getBLEDeviceServices 接口中获取
        serviceId,// 这里的 characteristicId 需要在 getBLEDeviceCharacteristics 接口中获取
        characteristicId,success(res) {resolve(res)console.log('notifyBLECharacteristicValueChange success', res.errMsg)}})})}// 获取服务列表
  getServiceList(deviceId) {return new Promise((resolve, reject) => {wx.getBLEDeviceServices({// 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接
        deviceId,success(res) {console.log('device services:', res.services)resolve({services: res.services,deviceId})}})})}// 获取蓝牙设备某个服务中所有特征值 getBLEDeviceCharacteristics
  getBLEDeviveChar({deviceId,serviceId}) {return new Promise((resolve, reject) => {wx.getBLEDeviceCharacteristics({// 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接
        deviceId,// 这里的 serviceId 需要在 getBLEDeviceServices 接口中获取
        serviceId,success(res) {resolve(res)console.log('device getBLEDeviceCharacteristics:', res.characteristics)}})})}// 断开与低功耗蓝牙设备的连接。
  closeConnection() {wx.closeBLEConnection({deviceId,success(res) {console.log(res)}})}//向低功耗蓝牙设备特征值中写入二进制数据。
  write({deviceId,serviceId,characteristicId,value}) {//传入String 返回 ArrayBuffer类型let abf = this.__hexStringToArrayBuffer(value)return new Promise((resolve, reject) => {wx.writeBLECharacteristicValue({// 这里的 deviceId 需要在 getBluetoothDevices 或 onBluetoothDeviceFound 接口中获取
        deviceId,// 这里的 serviceId 需要在 getBLEDeviceServices 接口中获取
        serviceId,// 这里的 characteristicId 需要在 getBLEDeviceCharacteristics 接口中获取
        characteristicId,// 这里的value是ArrayBuffer类型
        value: abf,success(res) {resolve(res)console.log('writeBLECharacteristicValue success', res.errMsg)}})})}// 停止搜寻附近的蓝牙外围设备
  stop() {return new Promise((resolve, reject) => {wx.stopBluetoothDevicesDiscovery({success(res) {console.log(res)resolve(res)}})})}// 关闭蓝牙适配器
  close() {wx.closeBluetoothAdapter()}// 获取设备Id
  getDevice() {return wx.getStorageSync('deviceId')}// 开启蓝牙搜索
  _search() {wx.showLoading({title: '正在扫描中...',})return new Promise((resolve, reject) => {wx.startBluetoothDevicesDiscovery({success: res => {console.log(res)resolve(res)},fail: err => {console.log(err)},complete: res => {setTimeout(() => {wx.hideLoading()}, 2000)}})})}//返回ArrayBuffe
  _hexStringToArrayBuffer(str) {if (!str) {return new ArrayBuffer(0);}var buffer = new ArrayBuffer(str.length);let dataView = new DataView(buffer)let ind = 0;for (var i = 0, len = str.length; i < len; i += 2) {let code = parseInt(str.substr(i, 2), 16)dataView.setUint8(ind, code)ind++}return buffer;}// 开启监听获取到新的设备
  _onDFound() {wx.onBluetoothDeviceFound(devices =>{this._getDevices().then(res=>{// console.log(this)this.publish(this.data,'newDevice')})// console.dir(devices)
    })}// 获取寻找的所有设备
  _getDevices() {return new Promise((resolve, reject) => {wx.getBluetoothDevices({success: res => {// console.log(res)let array = []for (var x in res.devices) {if (res.devices[x].name != '未知设备') {res.devices[x].advertisData = this._ab2hex(res.devices[x].advertisData)array.push(res.devices[x])}}// console.log(array)this.data = arrayresolve(array)}})})}// 获取蓝牙适配器的状态
  _getBluetoothState() {const that = thiswx.onBluetoothAdapterStateChange(res => {console.log(res)if (res.available) {console.log('蓝牙模块可用')} else {wx.showModal({title: '提示',content: '蓝牙已被关闭',showCancel: false,success(res) {if (res.confirm) {console.log('用户点击确定')} else if (res.cancel) {console.log('用户点击取消')}}})this._showTips(20000)console.log('蓝牙模块不可用')}if (res.discovering) {console.log('蓝牙适配器处于搜索状态')} else {console.log('蓝牙适配器不处于搜索状态')}})}// ArrayBuffer转16进度字符串示例
  _ab2hex(buffer) {var hexArr = Array.prototype.map.call(new Uint8Array(buffer),function(bit) {return ('00' + bit.toString(16)).slice(-2)})return hexArr.join('');}// 错误提示
  _showTips(code) {code && wx.showToast({title: tips[code],icon: 'none'})}// 储存设备Id
  _setDevice(id) {wx.setStorageSync('deviceId', id)}}export {BluetoothMode
}