NgxMtcGot

Google one tap para aplicaciones en Angular.

Getting started

Install via npm

npm i ngx-mtc-got

Import the module

En su AppModule, importar NgxMtcGotModule

import { NgxMtcGotModule } from 'ngx-mtc-got';

@NgModule({
declarations: [
...
],
imports: [
...
NgxMtcGotModule.config(
    {  
        client_id: 'App_client_id',
        cancel_on_tap_outside: false,
        authvalidate_by_googleapis: false,
        auto_select: false,
        disable_exponential_cooldowntime: false,
        context: 'signup',
        ...
    })
],
providers: [],
bootstrap: [...]
})
export class AppModule { }

NgOneTap service

import { NgxMtcGotService } from 'ngx-mtc-got';

@Component({
  selector: 'app-demo',
  templateUrl: './demo.component.html',
  styleUrls: ['./demo.component.css']
})
export class DemoComponent implements OnInit {

  userDetails;
  constructor(private oneTap: NgxMtcGotService) { }

   ngOnInit() {
        this.oneTap.tapInitialize(); //Initialize OneTap, At intial time you can pass config  like this.oneTap.tapInitialize(conif) here config is optional.
        this.oneTap.promtMoment.subscribe(res => {  // Subscribe the Tap Moment. following response options all have self explanatory. If you want more info pls refer official document below attached link.
           res.getDismissedReason(); 
           res.getMomentType();
           res.getNotDisplayedReason();
           res.getSkippedReason();
           res.isDismissedMoment();
           res.isDisplayed();
           res.isNotDisplayed();
           res.isSkippedMoment();
        });
        this.oneTap.oneTapCredentialResponse.subscribe(res => { // After continue with one tap JWT credentials response.
            console.log(res);
        });
        this.oneTap.authUserResponse.subscribe(res => {  // Use Auth validation by using google OAuth2 apis. Note: this one for testing and debugging purpose.
            this.userDetails = res;
        });

   }

    tapCancel() {
        this.oneTap.cancelTheTap();
    }

}

Options

| Name | Type | Required | Description | | --------------------- | ------- | :------: | :----------------------------------------------------------------------------------: | | client_id | String | true | Your application's client ID | | disable_exponential_cooldowntime | Boolean | false | when Close X one tap promt it's take reset/reshowing take some times this called Exponential cool down. you can disable that using this option Note: Recommended for development mode. If you want to use this feature in prod before pls check with official doc. link below. | | authvalidate_by_googleapis | Boolean | false | Validate the user without backend-server validation by using google provide APIs. Note: Recommended for development mode. If pro mode need to validate JWT one tap returned credentials from backend-server by using google-auth-library | | auto_select | Boolean | false | Enables automatic selection. | | cancel_on_tap_outside | Boolean | false | Cancels the prompt if the user clicks outside the prompt. | | context | String | false | The title and words in the One Tap prompt |

Resource

1. Exponential cooldown
2. Google One Tap Implementation doc by google
3. Google library and API

Server

Using one of the Google API Client Libraries (e.g. Java, Node.js, PHP, Python) is the recommended way to validate Google ID tokens in a production environment.

npm install google-auth-library --save

Node.js

const { OAuth2Client } = require('google-auth-library');
const client = new OAuth2Client(CLIENT_ID);
async function verify() {
	const ticket = await client.verifyIdToken({
		idToken: token,
		audience: CLIENT_ID, // Specify the CLIENT_ID of the app that accesses the backend
		// Or, if multiple clients access the backend:
		//[CLIENT_ID_1, CLIENT_ID_2, CLIENT_ID_3]
	});
	const payload = ticket.getPayload();
	const userid = payload['sub'];
	// If request specified a G Suite domain:
	// const domain = payload['hd'];
}
verify().catch(console.error);

More Reference - https://developers.google.com/identity/sign-in/web/backend-auth#using-a-google-api-client-library