keolis-services/services/heartRate.js

Keolis services includes Microphone, Location, Voice Activity Detector, Heart rate through web bluetooth API, text to speech, stop watch with our own cloud.

const _axios = InteropRequireDefault(require('axios'))
const $ = require('jquery');
const { api_url } = require('../variables/constants');

const onDisconnected = (event) => {
    const device = event.target;
}

function InteropRequireDefault(obj) {
  return obj && obj.__esModule ? obj : { default: obj }
}

function PlayCarl() {

    var settings = {
        "url": api_url + "/api/TokenAuth/Auth",
        "method": "POST",
        "timeout": 0,
        "headers": {
          "Content-Type": "application/json"
        },
        "data": JSON.stringify({
          "apiKey": global.apiKey,
          "apiSecret": global.apiSecret,
          "tenantName": global.tenantName
        }),
    };

    $.ajax(settings).done(function (response) {
        var Token = response.result.accessToken;
  
        var settings = {
          "url": api_url + "/api/Interaction/SDK_InitializeSession",
          "method": "POST",
          "timeout": 0,
          "headers": {
            "Authorization": "Bearer " + Token,
            "Content-Type": "application/json"
          },
          "data": JSON.stringify({
            "UserID": localStorage.getItem("logged_in_user")
          }),
          "beforeSend" : function(){
            $("#loading").show();          
          },
          "error": function (xhr, ajaxOptions, thrownError) {
            $("#loading").hide();
          }
        };
        
        $.ajax(settings).done(function (response) {
          debugger;
          $("#loading").hide();
          $(".wrapper").show();
          
          if(response.success){
            localStorage.setItem("interaction_session",response.result.id);
    
            TextToSpeach("Hello, My Name Is Carl");
          }
        });

    });

}

const bluetoothConnector = async (props) => {
    const device = await navigator.bluetooth.requestDevice({
    filters: [{ services: ['heart_rate',] }],
    //optionalServices: ['battery_service'], // Required to access service later.
    acceptAllDevices: false,
    })

    const server = await device.gatt.connect()
    const service = await server.getPrimaryService('heart_rate')
    const char = await service.getCharacteristic('heart_rate_measurement')

    device.addEventListener('gattserverdisconnected', onDisconnected);

    char.oncharacteristicvaluechanged = props.onChange

    char.startNotifications()

    if (localStorage.getItem('logged_in_user')) PlayCarl();

    return char
}

let hrData = new Array(200).fill(10);
let RealtimeHeartRate = 0;
let arrow = '';

export function heartRate(event) {
    RealtimeHeartRate = event.target.value.getInt8(1);

    //check if hearRate triggered the passive mode
    const prev = hrData[hrData.length - 1]
    hrData[hrData.length] = RealtimeHeartRate
    hrData = hrData.slice(-200)
    if (RealtimeHeartRate !== prev) arrow = RealtimeHeartRate > prev ? '⬆' : '⬇'
    document.getElementById("hr-rate").innerHTML = `${RealtimeHeartRate} ${arrow}`;
}

export function startHeartRate() {
    bluetoothConnector({ onChange: heartRate }).catch(error => {console.log(error);});
}