grocery-app/RiderApp/App.js

import { ApolloProvider } from "@apollo/react-hooks";
import AsyncStorage from "@react-native-async-storage/async-storage";
import * as Font from "expo-font";
import * as Notifications from "expo-notifications";
import * as SplashScreen from "expo-splash-screen";
import React, { useEffect, useState } from "react";
import { Platform, StatusBar } from "react-native";
import FlashMessage from "react-native-flash-message";
import i18n from "./i18n";
import setupApolloClient from "./src/apollo/index";
import { AuthContext } from "./src/context/auth";
import { ConfigurationProvider } from "./src/context/configuration";
import AppContainer from "./src/routes/index";

export default function App() {
  const [fontLoaded, setFontLoaded] = useState(false);
  const [client, setClient] = useState(null);
  const [token, setToken] = useState(false);
  const [appIsReady, setAppIsReady] = useState(false);

  useEffect(() => {
    (async () => {
      const token = await AsyncStorage.getItem("rider-token");
      if (token) setToken(token);
      setAppIsReady(true);
    })();
  }, []);

  useEffect(() => {
    (async () => {
      try {
        await SplashScreen.preventAutoHideAsync();
      } catch (e) {
        console.log(e);
      }
    })();
    loadData();
  }, []);

  const setTokenAsync = async (token) => {
    await AsyncStorage.setItem("rider-token", token);
    setToken(token);
  };

  const logout = async () => {
    try {
      await AsyncStorage.removeItem("rider-token");
      setToken(null);
    } catch (e) {
      console.log("Logout Error: ", e);
    }
  };

  async function loadData() {
    await i18n.initAsync();
    await Font.loadAsync({
      MuseoSans300: require("./assets/font/MuseoSans/MuseoSans300.ttf"),
      MuseoSans500: require("./assets/font/MuseoSans/MuseoSans500.ttf"),
      MuseoSans700: require("./assets/font/MuseoSans/MuseoSans700.ttf"),
      icomoon: require("./assets/font/icomoon.ttf"),
    });
    const client = await setupApolloClient();
    await permissionForPushNotificationsAsync();
    setClient(client);
    setFontLoaded(true);
    await SplashScreen.hideAsync();
  }

  async function permissionForPushNotificationsAsync() {
    const {
      status: existingStatus,
    } = await Notifications.getPermissionsAsync();
    let finalStatus = existingStatus;
    // only ask if permissions have not already been determined, because
    // iOS won't necessarily prompt the user a second time.
    if (existingStatus !== "granted") {
      // Android remote notification permissions are granted during the app
      // install, so this will only ask on iOS
      const { status } = await Notifications.requestPermissionsAsync();
      finalStatus = status;
    }

    // Stop here if the user did not grant permissions
    if (finalStatus !== "granted") {
      return;
    }

    if (Platform.OS === "android") {
      Notifications.setNotificationChannelAsync("default", {
        name: "default",
        sound: true,
        priority: "max",
        importance: Notifications.AndroidImportance.HIGH,
        vibrate: [0, 250, 250, 250],
      });
    }
  }

  if (fontLoaded && client && appIsReady) {
    return (
      <ApolloProvider client={client}>
        <StatusBar
          translucent
          backgroundColor={"transparent"}
          barStyle="dark-content"
        />
        <ConfigurationProvider>
          <AuthContext.Provider value={{ token, setTokenAsync, logout }}>
            <AppContainer />
          </AuthContext.Provider>
        </ConfigurationProvider>
        <FlashMessage duration={2000} position="center" />
      </ApolloProvider>
    );
  }
  return null;
}