Receiving update from code push server, handling the process

app.component.ts

import { SyncStatus } from 'capacitor-codepush/dist/esm/syncStatus';
import { codePush, InstallMode } from 'capacitor-codepush';
import { Component } from '@angular/core';
import { Platform } from '@ionic/angular';
import { SplashScreen } from '@capacitor/splash-screen';
import { App } from '@capacitor/app';
import {
  IRemotePackage,
  ILocalPackage,
} from 'capacitor-codepush/dist/esm/package';

@Component({
  selector: "app-root",
  templateUrl: "app.component.html",
  styleUrls: ["app.component.scss"],
})
export class AppComponent {
  constructor(private platform: Platform) {
    this.initializeApp();
  

  if (platform.is('capacitor')) {
      this.checkUpdate(); //Checks update on application start.

      App.addListener('appStateChange', ({ isActive }) => {
        if (isActive) {
          this.checkUpdate(); //checks update when app was paused then resumes active state.
        }
      });
    } else {
      //nothing
    }
   
  }

private initializeApp() {
    this.platform.ready().then(async() => {
      SplashScreen.hide();
})
}

 checkUpdate() {
    let deploymentKey;

    if (this.platform.is('ios')) {
      deploymentKey = environment.codePushIosKey;
      
    } else if (this.platform.is('android')) {
      deploymentKey = environment.codepushAndroidKey;
     
    }
    codePush.checkForUpdate(this.success, this.error, deploymentKey); 
  }
  async success(remotePackage: IRemotePackage) {
    if (!remotePackage) {
      console.log('App is Up to date');
      codePush.notifyApplicationReady(); // checks if the last update was successful,(if not successful, it will rollback to previous version)
    } else {
      if (!remotePackage.failedInstall) {
        console.log(
          'A CodePush update is available. Package hash: ',
          remotePackage
        );

        // DOWNLOAD UPDATE
        console.log('Downloading =========--=======>');
        const result: ILocalPackage = await remotePackage.download();
        if (result) {
          result.install({
            installMode: InstallMode.IMMEDIATE,
            minimumBackgroundDuration: 0,
            mandatoryInstallMode: InstallMode.IMMEDIATE,
          });
        }
        console.log('Result of download', result);
      } else {
        console.log('The available update was attempted before and failed.');
      }
    }
  }

  onPackageDownloaded(localPackage: ILocalPackage) {
    console.log('Download succeeded.===========>', localPackage.description);
    localPackage
      .install({
        installMode: InstallMode.IMMEDIATE,
        minimumBackgroundDuration: 0,
        mandatoryInstallMode: InstallMode.IMMEDIATE,
      })
      .then(this.onInstallSuccess, this.error);
  }

  onInstallSuccess() {
    console.log('Installation succeeded.');

    setTimeout(async () => {
      codePush.restartApplication(); // restarts the application to patch the update
    }, 200);
  }

  error(error) {
    console.log('Error===>', error);
  }

}