Реализация PWA

с помощью Angular Mobile Toolkit

Angular 2

яркие особенности

мрачные особенности

2 года разработки

нет обратной совместимости с 1.x

Bre

a

king

ch

ange

s

Гибкость

разносторонность

Быстродействие

Быстродействие

Компиляция Ahead of Time

Change detection

Рендер на стороне сервера

Web Workers

Масштабируемость

Масштабируемость

Lazy-loading

Масштабируемый слой коммуникаций с сервером

Удобство

CLI

npm install -g angular-cli
ng new my-shiny-app
cd my-shiny-app
ng serve
ng generate component my-shiny-component
ng g component my-shiny-component
ng g class my-shiny-class
ng g service my-shiny-service

вернемся к PWA...

Mobile Toolkit

Angular CLI

ng new myApp --mobile

The --mobile flag has been disabled temporarily while we await an update
of angular-universal for supporting NgModule. Sorry for the inconvenience.

GitHub

NPM Packages

Latest news

App Shell

<html>
  <body>
    <app-root-component>
      <h1>Loading...</h1>
    </app-root-component>
  </body>
</html>
<html>
 <body>
    <app-root-component>
      <style>...</style>
      <div class="md-header">
        <h3>Proper Application Shell</h3>
      </div>
      <div class="md-progress-bar"></div>
      <div class="signup-form">...</div>
    </app-root-component>
 </body>
</html>

App Shell

import { UniversalModule } from 'angular2-universal';

@NgModule({
  bootstrap: [AppComponent],
  imports: [
    AppModule,
    UniversalModule.withConfig({
      ...
    }),
})
export class AppShellModule {}

platformUniversalDynamic()
  .serializeModule(ShellModule)
  .then(html => console.log(html));

App Shell

# Install app-shell utility from github.com/angular/mobile-toolkit
$ npm install --save @angular/app-shell
// App code
import {AppShellModule} from '@angular/app-shell';

// In NgModule used for Universal prerendering:
AppShellModule.prerender()

// At runtime:
AppShellModule.runtime()

App Shell

@Component({
  selector: 'app-root-component',
  template: `
    <!-- Only show loading indicator in the shell -->
    <loading-indicator *shellRender>
    </loading-indicator>

    <!-- Hide a dynamic view until runtime -->
    <dynamic-view *shellNoRender>
    </dynamic-view>
    `
})
export class AppRootComponent {}

Pre-fetching and caching

# First, install the Angular Service Worker
$ npm install --save @angular/service-worker
<script type="text/javascript">
  // Require worker-basic.min.js copied to deploy directory from
  // node_modules/@angular/service-worker/bundles 

  // Feature detection guards against older browsers that don't
  // support service workers.
  if (navigator.serviceWorker) {
    navigator.serviceWorker.register('/worker-basic.min.js');
  }
</script>

Pre-fetching and caching

ngsw-manifest.json:

{
  "static": {
    "urls": {
      "/index.html": "ae543...",
      "/app.js": "9ff18...",
      "/logo.png": "0e33a...",
      ...
    }
  }
}
import AngularSWPlugin from '@angular/service-worker/webpack';

webpack({
  entry: 'index.html',
  output: {...},
  plugins: [
    ...,
    new AngularSWPlugin()
  ]
});

Динамическое кэширование

{
  ...,
  "dynamic": {
    "match": [{
      "url": "/api",
      "prefix": true,
      "strategy": "fastest"
      "invalidate": [...]
    }]
  }
}

Скоро

Manifest

manifest.webapp

{
  "name": "Hello Mobile",
  "short_name": "Hello Mobile",
  "icons": [
        {
            "src": "/android-chrome-36x36.png",
            "sizes": "36x36",
            "type": "image/png",
            "density": 0.75
        },
        ...
  ],
  "theme_color": "#000000",
  "background_color": "#e0e0e0",
  "start_url": "/index.html",
  "display": "standalone",
  "orientation": "portrait"
}

PUSH-УВЕДОМЛЕНИЯ

Backend

Push Service

Service worker

Инициализация

ngsw-manifest.json:

{
  ...,
  "push": {
    "showNotifications": true
  }
}
manifest.webapp

{
  ...,
  "gcm_sender_id": "12345"
} 

Сервис уведомлений

Сервис уведомлений

Сервер

# web-push package nicely handles details of pushing data
$ npm install --save web-push
const webPush = require('web-push');
webPush.setGCMAPIKey(...);

let payload = {
  notification: {
    title: 'Hello from the server', body: '...', icon: '/icon.png'
  }
};
webPush.sendNotification({
  payload: new Buffer(JSON.stringify(payload)), …
});

Клиент

// Configure app to include module from @angular/service-worker
import {ServiceWorkerModule} from '@angular/service-worker';

// Inject an API for communicating with the Angular service worker
export class PushService {
  constructor(worker: NgServiceWorker) {

    worker.registerForPush().subscribe(endpoint => {
      // Send endpoint data to the server to complete registration
    };

    worker.push.subscribe(payload => {
      // Process payload
    });

  }
}

Статус

Спасибо!

@webmaxru

Максим Сальников

Реализация PWA с помощью Angular Mobile Toolkit

By Maxim Salnikov

Реализация PWA с помощью Angular Mobile Toolkit

The term Progressive Web App refers to a group of technologies, such as service workers, and push notifications, that can bring native-like performance and user experience to web apps. Progressive Web Apps are interesting because in some ways they represent a coming of age for the Web. The Angular Mobile Toolkit makes it easy to build snappy Web apps that load instantly on any device, even without an internet connection. Take advantage of the searchability, shareability, and no-install-required-ability of the Web without compromise. During this 100% hands-on session we'll have a look on recent tools and guides from Angular team to help us build Progressive Web Apps. We'll have a look at Angular CLI and plugins/libraries for App Shell, Service Worker, and Application Manifest supporting us in fast and easy creation of installable, offline-capable, mobile-network-friendly apps. Agenda Introduction to PWA and Workshop Setup Introduction to Angular Mobile Toolkit Create an installable mobile web app with Angular CLI Make the App Installable with Web App Manifest App Shell Architecture Add an app shell component to the App Deep dive into Service Workers Add basic offline capabilities with Service Worker Adding Splash Screen Sending Push Notifications Questions and answers

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