The Epub player library for Sunbird platform!

The Epub player library is powered by Angular. This player is primarily designed to be used on Sunbird consumption platforms (mobile app, web portal, offline desktop app) to drive reusability and maintainability, hence reducing the redundant development effort significantly, and it can be integrated with any platform irrespective of the platforms and the frontend frameworks. It is exported not only as an angular library but also as a web component. 

Getting started with different integrations steps

The epub player can be integrated as a web component and also as an angular library in angular application projects and it can also be integrated into any mobile framework as a web component.

Use as web components

Any web based application can use this library as a web component. It accepts couple of inputs and triggers player and telemetry events back to the application.

• Insert library as below:

  <script type="text/javascript" src="sunbird-epub-player.js"></script>

• Update below script in index.html file

    <script src="https://cdnjs.cloudflare.com/ajax/libs/reflect-metadata/0.1.13/Reflect.min.js"
    integrity="sha512-jvbPH2TH5BSZumEfOJZn9IV+5bSwwN+qG4dvthYe3KCGC3/9HmxZ4phADbt9Pfcp+XSyyfc2vGZ/RMsSUZ9tbQ=="
    crossorigin="anonymous" referrerpolicy="no-referrer"></script>

• Get sample playerConfig from here: playerConfig

• Create a custom html element: sunbird-epub-player

  const  epubElement = document.createElement('sunbird-epub-player');

• Pass data using player-config

  epubElement.setAttribute('player-config', JSON.stringify(playerConfig));

  Note: Attribute name should be in kebab-case regardless of the actual Attribute name used in the Angular app. The value of the attribute should be in string type, as web-component does not accept any objects or arrays.

• Listen for the output events: playerEvent and telemetryEvent

  epubElement.addEventListener('playerEvent', (event) => {
  	console.log("On playerEvent", event);
  });
  epubElement.addEventListener('telemetryEvent', (event) => {
  	console.log("On telemetryEvent", event);
  });

• Append this element to existing element

  const  myPlayer = document.getElementById("my-player");
  myPlayer.appendChild(epubPlayerElement);

• Refer demo example

• To run the project, we can directly open index.html file in browser or can use local server to run the project.

• 

Use as Web component in the Angular app

• Run command

    npm i @project-sunbird/sunbird-epub-player-web-component
    npm i reflect-metadata

• Add these entries in angular json file inside assets, scripts and styles like below

            "assets": [
              "src/favicon.ico",
              "src/assets",
              {
                "glob": "**/*.*",
                "input": "./node_modules/@project-sunbird/sunbird-epub-player-web-component/assets",
                "output": "/assets/"
              }
            ],
            "styles": [
              "src/styles.scss",
              "node_modules/@project-sunbird/sunbird-epub-player-web-component/styles.css"
            ],
            "scripts": [
              "node_modules/reflect-metadata/Reflect.js",
              "node_modules/@project-sunbird/sunbird-epub-player-web-component/sunbird-epub-player.js"
            ]
  

• Import CUSTOM_ELEMENTS_SCHEMA in app module and add it to the NgModule as part of schemas like below

  ...
  import { CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
  ...
  
  @NgModule({
  ...
  schemas: [CUSTOM_ELEMENTS_SCHEMA],
  ...
  })
  

• Integrating sunbird-epub-player web component in angular component

  Create a viewChild in html template of the angular component like

  
      <div #epub></div>
  

  Refer the viewChild in ts file of the component and create the epub player using document.createElement, then attach the player config and listen to the player and telemetry events like below and since we are rendering using viewChild these steps should be under ngAfterViewInit hook of the angular component.

....

@ViewChild('epub') epub: ElementRef;

  ....
 ngAfterViewInit() {
    const playerConfig = <Config need be added>;
      const epubElement = document.createElement('sunbird-epub-player');
      epubElement.setAttribute('player-config', JSON.stringify(playerConfig));

      epubElement.addEventListener('playerEvent', (event) => {
        console.log("On playerEvent", event);
      });

      epubElement.addEventListener('telemetryEvent', (event) => {
        console.log("On telemetryEvent", event);
      });
      this.epub.nativeElement.append(epubElement);
  }
  ....

Note: : Click to see the mock - playerConfig and send input config as string

Use as Angular library in angular app

Step 1: Installation

Just run the following:

ng add @project-sunbird/sunbird-epub-player-v9

It will install sunbird-epub-player for the default application specified in your angular.json. If you have multiple projects and you want to target a specific application, you could specify the --project option

ng add @project-sunbird/sunbird-epub-player-v9 --project myProject

Manual installation

If you prefer not to use schematics or want to add sunbird-epub-player-v9 to an older project, you'll need to do the following:

1. Install the packages:

npm install @project-sunbird/sunbird-epub-player-v9 --save
npm install @project-sunbird/sb-styles --save
npm install @project-sunbird/client-services --save
npm install epubjs --save

2. Include the sb-styles and assets in angular.json configuration:

Add following under architect.build.assets and styles

{
  ...
  "build": {
  "builder": "@angular-devkit/build-angular:browser",
  "options": {
    ...
    "assets": [
    ...
+   {
+    "glob": "**/*.*",
+    "input": "./node_modules/@project-sunbird/sunbird-epub-player-v9/lib/assets/",
+    "output": "/assets/"
+   }	
    ...    
    ],
    "styles": [
    ...
+   "./node_modules/@project-sunbird/sb-styles/assets/_styles.scss"    
    ...
    ],
    "scripts": [
    ...
+   "node_modules/epubjs/dist/epub.js"    
    ...
    ],
    ...
  }

3. Import the modules and components:

Import the NgModule where you want to use:

+  import { SunbirdEpubPlayerModule } from '@project-sunbird/sunbird-epub-player-v9';
@NgModule({
  ...
+    imports: [SunbirdEpubPlayerModule],
  ...
})
export class YourAppModule { }

Step 2: Add css in global styles

body {
    background-color: white;
    height: 100%;
}
html {
    height: 100%;
}

Step 3: Send input to render Epub player

Use the mock config in your component to send input to Epub player Click to see the mock - playerConfig

Player config

var playerConfig = {
  "context": {
    "mode": "play",  // To identify preview used by the user to play/edit/preview
    "authToken": "", // Auth key to make  api calls
    "sid": "7283cf2e-d215-9944-b0c5-269489c6fa56", // User sessionid on portal or mobile 
    "did": "3c0a3724311fe944dec5df559cc4e006", // Unique id to identify the device or browser 
    "uid": "anonymous", // Current logged in user id
    "channel": "505c7c48ac6dc1edc9b08f21db5a571d", // Unique id of the channel(Channel ID)
    "pdata": {
      "id": "sunbird.portal", // Producer ID. For ex: For sunbird it would be "portal" or "genie"
      "ver": "3.2.12", // Version of the App
      "pid": "sunbird-portal.contentplayer" // Optional. In case the component is distributed, then which instance of that component
    },
    "contextRollup": { // Defines the content roll up data
      "l1": "505c7c48ac6dc1edc9b08f21db5a571d"
    },
    "tags": [ // Defines the tags data
      ""
    ],
    "cdata": [], // Defines correlation data
    "timeDiff": 0,  // Defines the time difference
    "objectRollup": {}, // Defines the object roll up data
    "host": "", // Defines the from which domain content should be load
    "endpoint": "", // Defines the end point
    "userData": {  // Defines the user data firstname & lastname
      "firstName": "",
      "lastName": ""
    }
  },
  "config": { 
	"traceId": "123456", // Defines trace id
    "sideMenu": { 
      "showShare": true,    // show/hide share button in side menu. default value is true
      "showDownload": true, // show/hide download button in side menu. default value is true
      "showReplay": false, // show/hide replay button in side menu. default value is false
      "showExit": true,   // show/hide exit button in side menu. default value is true
    }
  },
  "metadata": {}, // Content metadata json object (from API response take -> response.result.content)
} 

Telemetry property description

|Property Name| Description| Default Value |--|----------------------|--| | context | It is an object it contains the uid,did,sid,mode etc., these will be logged inside the telemetry | {} | | mode | It is string to identify preview used by the user to play/edit/preview | play| | authToken | It is string and Auth key to make api calls | ''| | sid | It is string and User sessionid on portal or mobile | ''| | did | It is string and Unique id to identify the device or browser| ''| | uid | It is string and Current logged in user id| ''| | channel | It is string which defines channel identifier to know which channel is currently using.| in.sunbird | | pdata | It is an object which defines the producer information it should have identifier and version and canvas will log in the telemetry| {'id':'in.sunbird', 'ver':'1.0'}| | contextRollup | It is an object which defines content roll up data | {}| | tags | It is an array which defines the tag data | []| | objectRollup | It is an object which defines object rollup data | {}| | host | It is string which defines the from which domain content should be load|window.location.origin | | userData | It is an object which defines user data | {}| | cdata | It is an array which defines the correlation data | []|

Config property description

|Property Name| Description| Default Value |--|----------------------|--| | config | It is an object it contains the sideMenu, these will be used to configure the canvas | { traceId: "12345", sideMenu: {"showShare": true, "showDownload": true, "showReplay": false, "showExit": true}} | | config.traceId | It is string which defines the trace id | ''| | config.sideMenu.showShare | It is boolean to show/hide share button in side menu| true| | config.sideMenu.showDownload | It is boolean to show/hide download button in side menu| true| | config.sideMenu.showReplay | It is boolean to show/hide replay button in side menu| false| | config.sideMenu.showExit | It is boolean to show/hide exit button in side menu| true| | metadata | It is an object which defines content metadata json object (from API response take -> response.result.content) | {}|

Available components

|Feature| Notes| Selector|Code|Input|Output |--|--|--|------------------------------------------------------------------------------------------|---|--| | Epub Player | Can be used to render epub | sunbird-epub-player| <sunbird-epub-player [playerConfig]="playerConfig"><sunbird-epub-player>|playerConfig|playerEvent, telemetryEvent|

Use as Web component in Mobile app

For existing apps, follow these steps steps to begin using.

Use as Angular library in Mobile app

For existing apps, follow these steps to begin using.

Step 1: Install the packages

Click to see the steps - InstallPackages

Step 2: Include the sb-styles and assets in angular.json

Click to see the steps - IncludeStyles , but use src/global.scss instead of src/styles.css in styles.

Step 3: Import the modules and components

Click to see the steps - Import

Step 4: Import in component

<sunbird-epub-player [playerConfig]="playerConfig" (playerEvent)="playerEvents($event)"
  (telemetryEvent)="playerTelemetryEvents($event)"></sunbird-epub-player>

Step 5: Send input to render EPUB player

Click to see the input data - playerConfig

Sample code

Click to see the sample code - sampleCode