react-native-background-geolocation/src/TransistorAuthorizationToken.js

The most sophisticated cross-platform background location-tracking & geofencing module with battery-conscious motion-detection intelligence

'use strict';

import { NativeModules } from "react-native"

const DEFAULT_URL  = 'https://tracker.transistorsoft.com';

const DUMMY_TOKEN 	= 'DUMMY_TOKEN';

const REFRESH_PAYLOAD = {
	refresh_token: '{refreshToken}'
}

const LOCATIONS_PATH = '/api/locations';

const REFRESH_TOKEN_PATH = '/api/refresh_token';

const { RNBackgroundGeolocation } = NativeModules;

export default class TransistorAuthorizationToken {
	static findOrCreate(orgname, username, url=DEFAULT_URL) {

		return new Promise((resolve, reject) => {
			let success = (token) => {
				// Configure Transistor url and refreshPayload.  Flutter is so much nice for this stuff.
				token.url = url;
				resolve(token)
			}
			let failure = (error) => {
				console.warn('[TransistorAuthorizationToken findOrCreate] ERROR: ', error);
				// Return a dummy token on error.  this is a weird thing to do but it probably failed due to no network connection to demo server.
				// Once app will request the token once again after restarting one's app.
				if (error.status == '403') {
					reject(error);
					return;
				}
				resolve({
					accessToken: DUMMY_TOKEN,
					refreshToken: DUMMY_TOKEN,
					expires: -1,
					url:url
				});
			}
			RNBackgroundGeolocation.getTransistorToken(orgname, username, url, success, failure);
		});
	}

  static destroy(url=DEFAULT_URL) {
  	return new Promise((resolve, reject) => {
			let success = (token) => { resolve(token) }
			let failure = (error) => { reject(error) }

			RNBackgroundGeolocation.destroyTransistorToken(url, success, failure);
		});
  }

  static applyIf(config) {
  	if (!config.transistorAuthorizationToken) return config;

  	let token = config.transistorAuthorizationToken;
  	delete config.transistorAuthorizationToken;

  	config.url = token.url + LOCATIONS_PATH;
  	config.authorization = {
  		strategy: 'JWT',
  		accessToken: token.accessToken,
  		refreshToken: token.refreshToken,
  		refreshUrl: token.url + REFRESH_TOKEN_PATH,
  		refreshPayload: REFRESH_PAYLOAD,
  		expires: token.expires
  	}
  	return config;
  }
}