fix changing locale breaking everything yay

lib/api/auth/oauth.dart

@@ -1,7 +1 @@
-import 'package:http/http.dart' as http;
-import 'dart:io';
 
-import 'package:oauth2/oauth2.dart' as oauth2;
-
-// Future<http.Client> authorize({required String userid}) {
-// }

lib/i18n/de_DE.json

@@ -0,0 +1,9 @@
+{
+    "greeting": "hallo!", 
+    "user-id-not-valid": "Hmm... die id sieht nicht ganz richtig aus...",
+    "user-id": "nutzer id",
+    "user-id-example": "nutzer@beispiel.de",
+    "authorize-in-browser": "im browser autorisieren",
+    "login-failed-snackbar-text": "login fehlgeschlagen!"
+}
+  

lib/i18n/en_US.json

@@ -3,6 +3,7 @@
     "user-id-not-valid": "Sorry, this user id doesn't look quite right... ",
     "user-id": "user id",
     "user-id-example": "user@example.com",
-    "authorize-in-browser": "authorize in browser"
+    "authorize-in-browser": "authorize in browser",
+    "login-failed-snackbar-text": "login failed!"
 }
   

lib/main.dart

@@ -2,12 +2,31 @@ import 'package:flutter/material.dart';
 import 'package:localization/localization.dart';
 import 'package:slothmu/partials/main_scaffold.dart';
 import 'pages/login.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 
-void main() => runApp(MaterialApp(
+void main() => runApp(const Slothmu());
+
+class Slothmu extends StatefulWidget {
+  const Slothmu({Key? key}) : super(key: key);
+
+  @override
+  State<Slothmu> createState() => _SlothmuState();
+}
+
+class _SlothmuState extends State<Slothmu> {
+  @override
+  Widget build(BuildContext context) {
+    LocalJsonLocalization.delegate.directories = ['lib/i18n'];
+    return MaterialApp(
       supportedLocales: const [
         Locale("en", "US"),
+        Locale("de", "DE"),
       ],
+      locale: const Locale("de", "DE"),
       localizationsDelegates: [
+        GlobalCupertinoLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+        GlobalMaterialLocalizations.delegate,
         LocalJsonLocalization.delegate,
       ],
       initialRoute: '/login',
@@ -15,4 +34,6 @@ void main() => runApp(MaterialApp(
         '/': (context) => const MainScaffold(),
         '/login': (context) => const Login(),
       },
-    ));
+    );
+  }
+}

lib/pages/login.dart

@@ -60,7 +60,11 @@ class _LoginFormState extends State<LoginForm> {
           ),
           TextButton.icon(
               onPressed: () {
-                formKey.currentState!.validate();
+                bool isValid = formKey.currentState!.validate();
+                if (!isValid) {
+                  ScaffoldMessenger.of(context).showSnackBar(SnackBar(
+                      content: Text("login-failed-snackbar-text".i18n())));
+                }
               },
               icon: const Icon(Icons.login),
               label: Text("authorize-in-browser".i18n()))