apps
/
atlas-mobile-ts


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252
							

<!DOCTYPE html>
<html lang="en">

<head>
  
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title> src/components/Atlas.tsx</title>

  <script src="https://cdn.jsdelivr.net/gh/google/code-prettify@master/loader/run_prettify.js"></script>
  <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
  <script src="./build/entry.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  <!--[if lt IE 9]>
    <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
  <![endif]-->
  <link href="https://fonts.googleapis.com/css?family=Roboto:100,400,700|Inconsolata,700" rel="stylesheet">
  <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.6.3/css/all.css" integrity="sha384-UHRtZLI+pbxtHCWp1t77Bi1L4ZtiqrqD80Kn4Z8NTSRyMA2Fd33n5dQ8lWUE00s/" crossorigin="anonymous">
  <link type="text/css" rel="stylesheet" href="https://jmblog.github.io/color-themes-for-google-code-prettify/themes/tomorrow-night.min.css">
  <link type="text/css" rel="stylesheet" href="styles/app.min.css">
  <link type="text/css" rel="stylesheet" href="styles/iframe.css">
  <link type="text/css" rel="stylesheet" href="">
  <script async defer src="https://buttons.github.io/buttons.js"></script>

  
</head>


<body class="layout small-header">
    <div id="stickyNavbarOverlay"></div>
    

<div class="top-nav">
    <div class="inner">
        <a id="hamburger" role="button" class="navbar-burger" aria-label="menu" aria-expanded="false">
            <span aria-hidden="true"></span>
            <span aria-hidden="true"></span>
            <span aria-hidden="true"></span>
        </a>
        <div class="logo">
            
            
        </div>
        <div class="menu">
            
            <div class="navigation">
                <a
                    href="index.html"
                    class="link"
                >
                    API Documentation
                </a>
                
                
            </div>
        </div>
    </div>
</div>
    <div id="main">
        <div
            class="sidebar "
            id="sidebarNav"
        >
            
            <nav>
                
                    <h2><a href="index.html">Documentation</a></h2><div class="category"><h3>Interfaces</h3><ul><li><a href="AddLandmarkProps.html">AddLandmarkProps</a></li><li><a href="CommentProps.html">CommentProps</a></li><li><a href="IdToken.html">IdToken</a></li><li><a href="IntroProps.html">IntroProps</a></li><li><a href="Landmark.html">Landmark</a></li><li><a href="LandmarkDetailsProps.html">LandmarkDetailsProps</a></li><li><a href="LandmarkPinProps.html">LandmarkPinProps</a></li><li><a href="LMComment.html">LMComment</a></li><li><a href="ProfileProps.html">ProfileProps</a></li><li><a href="RegisterProps.html">RegisterProps</a></li><li><a href="UserProfile.html">UserProfile</a></li></ul><h3>Components</h3><ul><li><a href="App.html">App</a></li><li><a href="Atlas.html">Atlas</a></li><li><a href="Comment.html">Comment</a></li><li><a href="PrimaryButton.html">PrimaryButton</a></li><li><a href="Profile.html">Profile</a></li><li><a href="SecondaryButton.html">SecondaryButton</a></li></ul><h3>Global</h3><ul><li><a href="global.html#IconStrings">IconStrings</a></li></ul></div><div class="category"><h2>Hooks</h2><h3>Namespaces</h3><ul><li><a href="useAuth.html">useAuth</a></li><li><a href="useLandmarks.html">useLandmarks</a></li><li><a href="useProfile.html">useProfile</a></li></ul></div><div class="category"><h2>Map</h2><h3>Interfaces</h3><ul><li><a href="UserLocation.html">UserLocation</a></li></ul><h3>Components</h3><ul><li><a href="AddLandmark.html">AddLandmark</a></li><li><a href="LandmarkDetails.html">LandmarkDetails</a></li><li><a href="LandmarkPin.html">LandmarkPin</a></li><li><a href="Map.html">Map</a></li></ul></div><div class="category"><h2>Navigation</h2><h3>Components</h3><ul><li><a href="AuthorizedNavigator.html">AuthorizedNavigator</a></li><li><a href="UnauthorizedNavigator.html">UnauthorizedNavigator</a></li></ul><h3><a href="global.html">Global</a></h3></div><div class="category"><h2>Stores</h2><h3>Classes</h3><ul><li><a href="AuthStore.html">AuthStore</a></li></ul></div><div class="category"><h2>Unauthorized</h2><h3>Components</h3><ul><li><a href="Intro.html">Intro</a></li><li><a href="UnauthorizedLayout.html">UnauthorizedLayout</a></li></ul><h3>Components / Registration</h3><ul><li><a href="RegisterMain.html">RegisterMain</a></li></ul></div>
                
            </nav>
        </div>
        <div class="core" id="main-content-wrapper">
            <div class="content">
                <header class="page-title">
                    <p>Source</p>
                    <h1>src/components/Atlas.tsx</h1>
                </header>
                

    <section>
        <article>
            <pre class="prettyprint source linenums"><code>import {
  RacingSansOne_400Regular
} from '@expo-google-fonts/racing-sans-one';
import { NavigationContainer } from '@react-navigation/native';
import axios, { AxiosRequestConfig } from 'axios';
import { useFonts } from 'expo-font';
import { getItemAsync } from 'expo-secure-store';
import { observer } from 'mobx-react';
import React, { useEffect, useRef, useState } from 'react';
import { AppState } from 'react-native';
import { SafeAreaProvider } from 'react-native-safe-area-context';
import { QueryClient, QueryClientProvider } from 'react-query';
import { Splash } from '../components/Splash';
import { API_URL, reportAxiosError } from '../globals';
import { useAuth } from '../hooks/useAuth';
import UnauthorizedNavigator from '../navigation/UnauthorizedNavigator';
import AuthorizedNavigator from '../navigation/AuthorizedNavigator';
import { authStore } from '../stores/AuthStore';

export enum TokenState {
  CheckingToken,
  ValidToken,
  InvalidToken
}

const queryClient = new QueryClient();

/**
 * Sub-root component of the app. Contains all global providers (NavigationContainer and SafeAreaProvider for React Navigation, QueryClientProvider for react-query) and is responsible for restricting unauthenticated users to the Intro screen by listening to {@link AuthStore}'s accessToken value.
 * @component
 */
const Atlas : React.FC = () => {
  /**
   * Ref that keeps track of the app's state (opened or closed)
   */
  const appState = useRef(AppState.currentState);
  /**
   * Flag that is switched on when the app is checking for tokens in the keystore and in memory. When true, "Logging you in.." and a spinner will be displayed to the user.
   */
  const [checkingToken, setCheckingToken] = useState&lt;boolean>(true);
  const { refreshAccessToken } = useAuth();
  const [fontsLoaded, error] = useFonts({
    RacingSansOne_400Regular
  });

  /**
   * Checks if there is an access token available in {@link AuthStore}, then checks if that access token is valid by calling the API. 
   * If the response is valid, the access token will be stored in memory, otherwise the user will be directed to intro screen.
   */
  const checkToken = async () => {
    // check both the mobx store and secure storage for the token
    let currentAccessToken = authStore.accessToken;
    if (!currentAccessToken) {
      currentAccessToken = await getItemAsync('accessToken');
    }

    if (currentAccessToken) {
      // check to see if the token is valid by making test call
      const requestConfig: AxiosRequestConfig = {
        method: 'GET',
        url: API_URL + "/api/me/",
        headers: { "Authorization": "Bearer " + currentAccessToken }
      };

      try {
        await axios(requestConfig);
        await authStore.setAccessTokenAsync(currentAccessToken);
      } catch (error) {
        // check if access token can be refreshed
        if (error.response.status == 401) {
          try {
            await refreshAccessToken();

            // update authorization header w/ new token
            await axios({...requestConfig, headers: { "Authorization": "Bearer " + authStore.accessToken }}); 
          } catch (error) {
            await authStore.setAccessTokenAsync(null);    
          }
        }
        // something went wrong with the api call, log error and delete access token
        reportAxiosError('Something went wrong when retrieving an access token', error)
        await authStore.setAccessTokenAsync(null);
      }
    }
    else {
      // no access token was found, user will be taken to login
      await authStore.setAccessTokenAsync(null);
    }

    setCheckingToken(false);
  }
  useEffect(() => {
    /**
     * useEffect hook that is responsible for registering an appState "change" handler that will call {@linkcode checkToken} each time the app is opened or closed on the device.
     * @memberOf Atlas
     */
    function registerAppStateChangeHandler() {
      AppState.addEventListener("change", (appState: string) => {
        if (appState == 'active') {
          checkToken(); 
        }
      });
      return () => {
        AppState.removeEventListener("change", (appState: string) => {
          if (appState == 'active') {
            checkToken(); 
          }
        });
      };
    }
    registerAppStateChangeHandler();
  }, []);

  useEffect(() => {
    /**
   * Calls {@linkcode checkToken} when a change to the access token stored in {@link AuthStore} is detected. 
   * @memberOf Atlas
   */
    const checkTokenOnAccessTokenChange = () => {
      checkToken()
    }
    checkTokenOnAccessTokenChange()
  }, [authStore.accessToken]);

  return (
    &lt;SafeAreaProvider>
      &lt;NavigationContainer>  
        {checkingToken ? &lt;Splash/> :
        &lt;QueryClientProvider client={queryClient}>
          {authStore.accessToken ? &lt;AuthorizedNavigator  /> : &lt;UnauthorizedNavigator /> } 
        &lt;/QueryClientProvider> }
      &lt;/NavigationContainer>  
    &lt;/SafeAreaProvider>
  );
}

export default observer(Atlas);</code></pre>
        </article>
    </section>


            </div>
            
            <footer class="footer">
                <div class="content has-text-centered">
                    <p>Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.6.7</a></p>
                    <p class="sidebar-created-by">
                        <a href="https://github.com/SoftwareBrothers/better-docs" target="_blank">BetterDocs theme</a> provided with <i class="fas fa-heart"></i> by 
                        <a href="http://softwarebrothers.co" target="_blank">SoftwareBrothers - JavaScript Development Agency</a>
                    </p>
                </div>
            </footer>
            
        </div>
        <div id="side-nav" class="side-nav">
        </div>
    </div>
<script src="scripts/app.min.js"></script>
<script>PR.prettyPrint();</script>
<script src="scripts/linenumber.js"> </script>

</body>
</html>