Display Street View Image using Angular & Google Maps

<!DOCTYPE html>
<html>

  <head>
    <base href="." />
    <script type="text/javascript" charset="utf-8">
      window.AngularVersionForThisPlunker = 'latest'
    </script>
    <title>angular playground</title>
    <link rel="stylesheet" href="style.css" />
    <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
    <script src="https://unpkg.com/zone.js/dist/zone.js"></script>
    <script src="https://unpkg.com/zone.js/dist/long-stack-trace-zone.js"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
    <script src="https://unpkg.com/systemjs@0.19.31/dist/system.js"></script>
    <script src="config.js"></script>
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  </head>

  <body>
    <my-app>
    loading...
  </my-app>
  </body>

</html>

/* Styles go here */

### Display Street View Image using Angular & Google Maps

var angularVersion;
if(window.AngularVersionForThisPlunker === 'latest'){
  angularVersion = ''; //picks up latest
}
else {
  angularVersion = '@' + window.AngularVersionForThisPlunker;
}

System.config({
  //use typescript for compilation
  transpiler: 'typescript',
  //typescript compiler options
  typescriptOptions: {
    emitDecoratorMetadata: true
  },
  paths: {
    'npm:': 'https://unpkg.com/'
  },
  //map tells the System loader where to look for things
  map: {
    
    'app': './src',
    '@angular/core': 'npm:@angular/core'+ angularVersion + '/bundles/core.umd.js',
    '@angular/common': 'npm:@angular/common' + angularVersion + '/bundles/common.umd.js',
    '@angular/common/http': 'npm:@angular/common' + angularVersion + '/bundles/common-http.umd.js',
    '@angular/compiler': 'npm:@angular/compiler' + angularVersion  + '/bundles/compiler.umd.js',
    '@angular/platform-browser': 'npm:@angular/platform-browser' + angularVersion + '/bundles/platform-browser.umd.js',
    '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic' + angularVersion + '/bundles/platform-browser-dynamic.umd.js',
    '@angular/http': 'npm:@angular/http' + angularVersion + '/bundles/http.umd.js',
    '@angular/router': 'npm:@angular/router' + angularVersion +'/bundles/router.umd.js',
    '@angular/forms': 'npm:@angular/forms' + angularVersion + '/bundles/forms.umd.js',
    '@angular/animations': 'npm:@angular/animations' + angularVersion + '/bundles/animations.umd.js',
    '@angular/platform-browser/animations': 'npm:@angular/platform-browser' + angularVersion + '/bundles/platform-browser-animations.umd.js',
    '@angular/animations/browser': 'npm:@angular/animations' + angularVersion + '/bundles/animations-browser.umd.js',
    
    '@angular/core/testing': 'npm:@angular/core' + angularVersion + '/bundles/core-testing.umd.js',
    '@angular/common/testing': 'npm:@angular/common' + angularVersion + '/bundles/common-testing.umd.js',
    '@angular/common/http/testing': 'npm:@angular/common' + angularVersion + '/bundles/common-http-testing.umd.js',
    '@angular/compiler/testing': 'npm:@angular/compiler' + angularVersion + '/bundles/compiler-testing.umd.js',
    '@angular/platform-browser/testing': 'npm:@angular/platform-browser' + angularVersion + '/bundles/platform-browser-testing.umd.js',
    '@angular/platform-browser-dynamic/testing': 'npm:@angular/platform-browser-dynamic' + angularVersion + '/bundles/platform-browser-dynamic-testing.umd.js',
    '@angular/http/testing': 'npm:@angular/http' + angularVersion + '/bundles/http-testing.umd.js',
    '@angular/router/testing': 'npm:@angular/router' + angularVersion + '/bundles/router-testing.umd.js',
    'tslib': 'npm:tslib@1.6.1',
    'rxjs': 'npm:rxjs',
    'typescript': 'npm:typescript@2.2.1/lib/typescript.js'
  },
  //packages defines our app package
  packages: {
    app: {
      main: './main.ts',
      defaultExtension: 'ts'
    },
    rxjs: {
      defaultExtension: 'js'
    }
  }
});

//main entry point
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {AppModule} from './app';

platformBrowserDynamic().bootstrapModule(AppModule)

//our root app component
import {Component, OnInit, NgModule, VERSION} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'
import {GoogleMapsService} from './app.service';
import { HttpClientModule } from '@angular/common/http'; 

import { DomSanitizer } from '@angular/platform-browser';
import { Observable } from 'rxjs/Observable';

@Component({
  selector: 'my-app',
  template: `
    <div>
      <h2>Hello {{name}} with Google Maps</h2>
      <div><img id='property-image' [src]='image'></div>
    </div>
  `,
})
export class App implements OnInit {
  name:string;
  image: any;
  
  constructor(private sanitizer: DomSanitizer,
              private googleMapsService: GoogleMapsService) {
    this.name = `Angular! v${VERSION.full}`;
  }
  
  ngOnInit() {
    this.gmapImage('300x250', '-73.9857', '40.7484'); 
    // Empire State Building [latitude,longitude] = [40.7484,-73.9857]
  }
  
  gmapImage(size: string, long: number, lat: number) {
    this.googleMapsService.getStreetViewImage(size, long, lat)
      .subscribe((img: any) => {        
        this.image = this.sanitizer.bypassSecurityTrustUrl(img);
      })
  }
  
}

@NgModule({
  imports: [ BrowserModule, HttpClientModule ],
  declarations: [ App ],
  providers: [ GoogleMapsService ],
  bootstrap: [ App ]
})
export class AppModule {}

import { Injectable } from '@angular/core';
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Observable } from 'rxjs/Observable';
import { of } from 'rxjs/observable/of';
import 'rxjs/add/operator/map';
import { catchError, map, tap } from 'rxjs/operators';

@Injectable()
export class GoogleMapsService {

  // Visit https://developers.google.com/maps/documentation/streetview/
  // Generate your API Key
  private apiKey = 'YOUR_API_KEY';

  constructor(private http: HttpClient) { }

  getStreetViewImage(size: string, long: number, lat: number) {
    const url = `https://maps.googleapis.com/maps/api/streetview?size=${size}&location=${lat},${long}`
                       + `&key=${this.apiKey}`;
    
    return this.http.get(url, {responseType: 'blob'}).map(blob => {
      var urlCreator = window.URL;
      return urlCreator.createObjectURL(blob);
    }).pipe(
      catchError(this.handleError(`getStreetViewImage location=${lat},${long}`))
    );
  }

  /**
   * Handle Http operation that failed.
   * Let the app continue.
   * @param operation - name of the operation that failed
   * @param result - optional value to return as the observable result
   */
  private handleError<T> (operation = 'operation', result?: T) {
    return (error: any): Observable<T> => {
 
      // TODO: send the error to remote logging infrastructure
      console.error(error); // log to console instead
 
      // TODO: better job of transforming error for user consumption
      console.log(`${operation} failed: ${error.message}`);
 
      // Let the app keep running by returning an empty result.
      return of(result as T);
    };
  }
}