@belongnet/capacitor-google-auth

CapacitorGoogleAuth

@belongnet/capacitor-google-auth

CAPACITOR 6

Capacitor plugin for Google Auth.

Install

1. Install package

npm i --save @belongnet/capacitor-google-auth

# pnpm
pnpm add @belongnet/capacitor-google-auth

# yarn
yarn add @belongnet/capacitor-google-auth

2. Update capacitor deps

npx cap update

Updating

If need migrate to different Capacitor versions see instruction for migrate plugin to new version.

Usage

WEB

Register plugin and manually initialize

import { GoogleAuth } from '@belongnet/capacitor-google-auth';

// use hook after platform dom ready
GoogleAuth.initialize({
  clientId: 'CLIENT_ID.apps.googleusercontent.com',
  scopes: ['profile', 'email'],
  grantOfflineAccess: true,
});

or if need use meta tags (Optional):

<meta name="google-signin-client_id" content="{your client id here}" />
<meta name="google-signin-scope" content="profile email" />

Options

• clientId - The app's client ID, found and created in the Google Developers Console.
• scopes – same as Configure scopes
• grantOfflineAccess – boolean, default false, Set if your application needs to refresh access tokens when the user is not present at the browser.

Use it

GoogleAuth.signIn();

Angular

init hook

// app.component.ts
constructor() {
  this.initializeApp();
}

initializeApp() {
  this.platform.ready().then(() => {
    GoogleAuth.initialize()
  })
}

sign in function

import { GoogleAuth } from "@belongnet/capacitor-google-auth";
import { Auth, GoogleAuthProvider, signInWithCredential } from '@angular/fire/auth';

async googleSignIn() {
  let googleUser = await GoogleAuth.signIn();

  /*
    If you use Firebase you can forward and use the logged in Google user like this:
  */
  constructor(private auth: Auth){}

  const googleUser = await GoogleAuth.signIn();
  const _credential = GoogleAuthProvider.credential(googleUser.authentication.idToken);
  return signInWithCredential(this.auth, _credential);
}

Vue 3

<script setup lang="ts">
import { defineComponent, onMounted } from 'vue';
import { GoogleAuth } from '@belongnet/capacitor-google-auth';

onMounted(() => {
  GoogleAuth.initialize();
});

async function logIn() {
  const response = await GoogleAuth.signIn();
  console.log(response);
}
</script>

or see more CapacitorGoogleAuth-Vue3-example

iOS

1. Create in Google cloud console credential Client ID for iOS and get Client ID and iOS URL scheme

2. Add identifier REVERSED_CLIENT_ID as URL schemes to Info.plist from iOS URL scheme
   (Xcode: App - Targets/App - Info - URL Types, click plus icon)

3. Set Client ID one of the ways:

   1. Set in capacitor.config.json
      • iosClientId - specific key for iOS
      • clientId - or common key for Android and iOS
   2. Download GoogleService-Info.plist file with CLIENT_ID and copy to ios/App/App necessarily through Xcode for indexing.

plugin first use iosClientId if not found use clientId if not found use value CLIENT_ID from file GoogleService-Info.plist

Maybe need re-check structure manually in Info.plist, it should be like this:

  <key>CFBundleURLTypes</key>
  <array>
		<dict>
			<key>CFBundleURLName</key>
			<string>REVERSED_CLIENT_ID</string>
			<key>CFBundleURLSchemes</key>
			<array>
				<string>com.googleusercontent.apps.xxxxxx-xxxxxxxxxxxxxxxxxx</string>
			</array>
		</dict>
	</array>

Is you don't use capacitor config, you can set clientId in initialize method specifically for platform:

    clientId:
      Capacitor.getPlatform() === 'ios'
        ? import.meta.env.VITE_GOOGLE_CLIENT_ID_IOS
        : import.meta.env.VITE_GOOGLE_CLIENT_ID,

Android

Set Client ID :

1. In capacitor.config.json

   • androidClientId - specific key for Android
   • clientId - or common key for Android and iOS

2. or set inside your strings.xml

plugin first use androidClientId if not found use clientId if not found use value server_client_id from file strings.xml

<resources>
  <string name="server_client_id">Your Web Client Key</string>
</resources>

Changing Play Services Auth version (Optional) :

This plugin uses com.google.android.gms:play-services-auth:21.2.0 by default, you can override it providing gmsPlayServicesAuthVersion at variables.gradle

Refresh method

This method should be called when the app is initialized to establish if the user is currently logged in. If true, the method will return an accessToken, idToken and an empty refreshToken.

checkLoggedIn() {
    GoogleAuth.refresh()
        .then((data) => {
            if (data.accessToken) {
                this.currentTokens = data;
            }
        })
        .catch((error) => {
            if (error.type === 'userLoggedOut') {
                this.signin()
            }
        });
}

Configure

Name	Type	Description
clientId	string	The app's client ID, found and created in the Google Developers Console.
iosClientId	string	Specific client ID key for iOS
androidClientId	string	Specific client ID key for Android
scopes	string[]	Scopes that you might need to request to access Google APIs https://developers.google.com/identity/protocols/oauth2/scopes
serverClientId	string	This ClientId used for offline access and server side handling
forceCodeForRefreshToken	boolean	Force user to select email address to regenerate AuthCode used to get a valid refreshtoken (work on iOS and Android)

Provide configuration in root capacitor.config.json

{
  "plugins": {
    "GoogleAuth": {
      "scopes": ["profile", "email"],
      "serverClientId": "xxxxxx-xxxxxxxxxxxxxxxxxx.apps.googleusercontent.com",
      "forceCodeForRefreshToken": true
    }
  }
}

or in capacitor.config.ts

/// <reference types="'@belongnet/capacitor-google-auth'" />

const config: CapacitorConfig = {
  plugins: {
    GoogleAuth: {
      scopes: ['profile', 'email'],
      serverClientId: 'xxxxxx-xxxxxxxxxxxxxxxxxx.apps.googleusercontent.com',
      forceCodeForRefreshToken: true,
    },
  },
};

export default config;

Note: scopes can be configured under initialize function.

API

• initialize(...)
• signIn()
• refresh()
• signOut()
• Interfaces

initialize(...)

initialize(options?: InitOptions) => any

Initializes the GoogleAuthPlugin, loading the gapi library and setting up the plugin.

Param	Type	Description
options	InitOptions	- Optional initialization options.

Returns: any

Since: 3.1.0

---

signIn()

signIn() => any

Initiates the sign-in process and returns a Promise that resolves with the user information.

Returns: any

---

refresh()

refresh() => any

Refreshes the authentication token and returns a Promise that resolves with the updated authentication details.

Returns: any

---

signOut()

signOut() => any

Signs out the user and returns a Promise.

Returns: any

---

Interfaces

InitOptions

Prop	Type	Description	Default	Since
clientId	string	The app's client ID, found and created in the Google Developers Console. Common for Android or iOS. The default is defined in the configuration.		3.1.0
scopes	{}	Specifies the scopes required for accessing Google APIs The default is defined in the configuration.
grantOfflineAccess	boolean	Set if your application needs to refresh access tokens when the user is not present at the browser. In response use serverAuthCode key	false	3.1.0

User

Prop	Type	Description
id	string	The unique identifier for the user.
email	string	The email address associated with the user.
name	string	The user's full name.
familyName	string	The family name (last name) of the user.
givenName	string	The given name (first name) of the user.
imageUrl	string	The URL of the user's profile picture.
serverAuthCode	string	The server authentication code.
authentication	Authentication	The authentication details including access, refresh and ID tokens.

Authentication

Prop	Type	Description
accessToken	string	The access token obtained during authentication.
idToken	string	The ID token obtained during authentication.
refreshToken	string	The refresh token.

License

MIT