Support token login

lib/redux/auth/auth_actions.dart

@@ -37,6 +37,11 @@ class OAuthLoginRequest implements StartLoading {
   final String oneTimePassword;
 }
 
+class TokenLogin {
+  TokenLogin(this.token);
+  final String token;
+}
+
 class UserLoadUrl {
   UserLoadUrl({this.url});
 

lib/ui/auth/login_view.dart

@@ -6,6 +6,7 @@ import 'package:flutter/services.dart';
 import 'package:invoiceninja_flutter/constants.dart';
 import 'package:invoiceninja_flutter/redux/ui/pref_state.dart';
 import 'package:invoiceninja_flutter/ui/app/buttons/app_text_button.dart';
+import 'package:invoiceninja_flutter/ui/app/buttons/elevated_button.dart';
 import 'package:invoiceninja_flutter/ui/app/dialogs/alert_dialog.dart';
 import 'package:invoiceninja_flutter/ui/app/forms/app_toggle_buttons.dart';
 import 'package:invoiceninja_flutter/ui/app/forms/decorated_form_field.dart';
@@ -46,6 +47,7 @@ class _LoginState extends State<LoginView> {
   final _urlController = TextEditingController();
   final _secretController = TextEditingController();
   final _oneTimePasswordController = TextEditingController();
+  final _tokenController = TextEditingController();
 
   final _buttonController = RoundedLoadingButtonController();
 
@@ -53,6 +55,7 @@ class _LoginState extends State<LoginView> {
 
   String _loginError = '';
 
+  bool _tokenLogin = false;
   bool _emailLogin = false;
   bool _isSelfHosted = false;
   bool _createAccount = true;
@@ -110,6 +113,8 @@ class _LoginState extends State<LoginView> {
     _passwordController.dispose();
     _urlController.dispose();
     _secretController.dispose();
+    _oneTimePasswordController.dispose();
+    _tokenController.dispose();
 
     super.dispose();
   }
@@ -294,9 +299,34 @@ class _LoginState extends State<LoginView> {
                   onTap: () {
                     launch(kSiteUrl, forceSafariVC: false, forceWebView: false);
                   },
+                  onLongPress: () {
+                    if (kReleaseMode) {
+                      return;
+                    }
+
+                    setState(() => _tokenLogin = !_tokenLogin);
+                  },
                 ),
               ),
             ),
+            if (_tokenLogin)
+              FormCard(
+                forceNarrow: calculateLayout(context) != AppLayout.mobile,
+                children: [
+                  DecoratedFormField(
+                    label: localization.token,
+                    controller: _tokenController,
+                  ),
+                  AppButton(
+                    label: localization.submit.toUpperCase(),
+                    onPressed: () {
+                      final Completer<Null> completer = Completer<Null>();
+                      viewModel.onTokenLoginPressed(context, completer,
+                          token: _tokenController.text);
+                    },
+                  )
+                ],
+              ),
             AnimatedOpacity(
               duration: Duration(milliseconds: 500),
               opacity: viewModel.authState.isAuthenticated ? 0 : 1,

lib/ui/auth/login_vm.dart

@@ -48,6 +48,7 @@ class LoginVM {
     @required this.onSignUpPressed,
     @required this.onGoogleLoginPressed,
     @required this.onGoogleSignUpPressed,
+    @required this.onTokenLoginPressed,
   });
 
   AppState state;
@@ -79,6 +80,12 @@ class LoginVM {
     @required String password,
   }) onSignUpPressed;
 
+  final Function(
+    BuildContext,
+    Completer<Null> completer, {
+    @required String token,
+  }) onTokenLoginPressed;
+
   final Function(BuildContext, Completer<Null> completer,
       {String url, String secret, String oneTimePassword}) onGoogleLoginPressed;
   final Function(BuildContext, Completer<Null> completer) onGoogleSignUpPressed;
@@ -174,8 +181,8 @@ class LoginVM {
                 idToken: idToken,
                 accessToken: accessToken,
               ));
-                completer.future.then(
-                    (_) => _handleLogin(context: context, isSignUp: true));
+              completer.future
+                  .then((_) => _handleLogin(context: context, isSignUp: true));
             }
           });
           if (!signedIn) {
@@ -246,6 +253,11 @@ class LoginVM {
           oneTimePassword: oneTimePassword.trim(),
         ));
         completer.future.then((_) => _handleLogin(context: context));
-        });
+      },
+      onTokenLoginPressed: (BuildContext context, Completer<Null> completer,
+          {@required String token}) {
+        //
+      },
+    );
   }
 }