login static method

Implementation

static Future<Credential> login(
    {String? clientId, String? clientSecret}) async {
  var issuer = await Issuer.discover(Issuer.google);

  var client = Client(
    issuer,
    clientId ?? String.fromEnvironment('FIREBASE_CLIENT_ID'),
    clientSecret:
        clientSecret ?? String.fromEnvironment('FIREBASE_CLIENT_SECRET'),
  );

  // create an authenticator
  var authenticator = Authenticator(client,
      scopes: [
        'email',
        'https://www.googleapis.com/auth/cloud-platform',
        'https://www.googleapis.com/auth/cloudplatformprojects.readonly',
        'https://www.googleapis.com/auth/firebase',
        'openid'
      ],
      port: 4000);

  // starts the authentication
  var c = await authenticator.authorize(); // this will open a browser

  var v = {
    'client_id': client.clientId,
    'client_secret': client.clientSecret,
    'refresh_token': c.response!['refresh_token']
  };

  var f = File(firebaseAdminCredentialPath!);
  f.parent.createSync(recursive: true);
  f.writeAsStringSync(JsonEncoder.withIndent(' ').convert(v));

  var credential = RefreshTokenCredential(v);

  return credential;
}