Settings working on front-end and with it the notifications list

frontend/lib/main.dart

@@ -19,7 +19,7 @@ final class MainApp extends StatelessWidget {
         title: 'OOTT',
         theme: ThemeData(
           colorScheme: ColorScheme.fromSeed(
-            seedColor: Colors.deepOrange,
+            seedColor: Color.fromARGB(255, 214, 93, 14),
             brightness: Brightness.dark,
           ),
         ),

frontend/lib/settings/settings.dart

@@ -1,7 +1,10 @@
+import 'dart:io';
+
 import 'package:encrypter/encrypter/xor.dart';
 import 'package:flutter/material.dart';
 import '../utils/oott_api.dart';
 import '../utils/pref_utils.dart';
+import '../utils/ui_snackbars.dart';
 
 class Settings extends StatefulWidget {
   @override
@@ -10,9 +13,12 @@ class Settings extends StatefulWidget {
 
 class _SettingsState extends State<Settings> {
   bool _isLoading = true;
+  bool _isSaving = false;
   final _baseUrlController = TextEditingController();
   final _apiKeyController = TextEditingController();
   bool _apiKeyVisible = false;
+  bool _testOk = false;
+
   final _formKey = GlobalKey<FormState>();
 
   @override
@@ -37,6 +43,11 @@ class _SettingsState extends State<Settings> {
     setState(() {});
   }
 
+  void _saveData() {
+    PrefUtil.setValue("base_url", _baseUrlController.text);
+    PrefUtil.setValue("api_key", XOR().xorEncode(_apiKeyController.text));
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -48,8 +59,20 @@ class _SettingsState extends State<Settings> {
               child: Column(
                 children: <Widget>[
                   SizedBox(height: 16),
+                  // Base URL
                   TextFormField(
                     controller: _baseUrlController,
+                    onChanged: (text) {
+                      setState(() {
+                        _testOk = false;
+                      });
+                    },
+                    validator: (value) {
+                      if (value == null || value.isEmpty) {
+                        return "The URL cannot be empty";
+                      }
+                      return null;
+                    },
                     decoration: const InputDecoration(
                       border: UnderlineInputBorder(),
                       labelText: 'Base URL of your OOTT server\'s API',
@@ -57,12 +80,25 @@ class _SettingsState extends State<Settings> {
                     ),
                   ),
                   SizedBox(height: 16),
+                  // API Key
                   TextFormField(
                     controller: _apiKeyController,
+                    onChanged: (text) {
+                      setState(() {
+                        _testOk = false;
+                      });
+                    },
+
+                    validator: (value) {
+                      if (value == null || value.isEmpty) {
+                        return "The API key cannot be empty";
+                      }
+                      return null;
+                    },
                     obscureText: !_apiKeyVisible,
                     decoration: InputDecoration(
                       border: UnderlineInputBorder(),
-                      labelText: 'API Key',
+                      labelText: 'API key',
                       suffixIcon: IconButton(
                         icon: Icon(
                           _apiKeyVisible
@@ -78,23 +114,78 @@ class _SettingsState extends State<Settings> {
                     ),
                   ),
                   SizedBox(height: 16),
-                  ElevatedButton.icon(
-                    onPressed: () {
-                      showDialog(
-                        context: context,
-                        builder: (context) {
-                          return AlertDialog(
-                            content: Text(
-                              _baseUrlController.text +
-                                  ' - ' +
-                                  _apiKeyController.text,
-                            ),
-                          );
+                  // Button row
+                  Row(
+                    mainAxisAlignment: MainAxisAlignment.end,
+                    children: [
+                      // Test button
+                      ElevatedButton.icon(
+                        onPressed: () async {
+                          if (_formKey.currentState!.validate()) {
+                            String? testResult = await BackendAPI.test(
+                              _baseUrlController.text,
+                              _apiKeyController.text,
+                            );
+
+                            setState(() {
+                              _testOk = testResult == null;
+                            });
+
+                            if (testResult == null) {
+                              UISnackbars.showSuccess(context, 'It works!');
+                            } else {
+                              UISnackbars.showError(context, testResult);
+                            }
+                          }
                         },
-                      );
-                    },
-                    label: Text('Test'),
-                    icon: const Icon(Icons.check),
+                        label: Text('Test'),
+                        icon: _testOk
+                            ? Icon(Icons.check)
+                            : Icon(Icons.play_arrow),
+                        style: ElevatedButton.styleFrom(
+                          backgroundColor: _testOk
+                              ? Colors.lightGreen
+                              : Theme.of(context).colorScheme.secondary,
+                          foregroundColor: _testOk
+                              ? Theme.of(context).colorScheme.onPrimary
+                              : Theme.of(context).colorScheme.onSecondary,
+                        ),
+                      ),
+                      SizedBox(width: 8),
+
+                      // Save button
+                      ElevatedButton.icon(
+                        onPressed: ((!_testOk) || _isSaving)
+                            ? null
+                            : () async {
+                                if (_formKey.currentState!.validate()) {
+                                  setState(() {
+                                    _isSaving = true;
+                                  });
+                                  _saveData();
+
+                                  setState(() {
+                                    _isSaving = false;
+                                  });
+                                  UISnackbars.showSuccess(
+                                    context,
+                                    'Settings saved successfully',
+                                  );
+                                }
+                              },
+                        label: Text(_isSaving ? 'Saving...' : 'Save'),
+
+                        icon: _isSaving ? null : Icon(Icons.save),
+                        style: ElevatedButton.styleFrom(
+                          backgroundColor: Theme.of(
+                            context,
+                          ).colorScheme.primary,
+                          foregroundColor: Theme.of(
+                            context,
+                          ).colorScheme.onPrimary,
+                        ),
+                      ),
+                    ],
                   ),
                 ],
               ),

frontend/lib/utils/oott_api.dart

@@ -11,12 +11,9 @@ class BackendAPI {
   static BackendAPI get instance => _instance;
 
   BackendAPI._internal() {
-    // _baseUrl =
-    // PrefUtil.getValue("base_url", "http://localhost:3000/api") as String;
-    // _apiKey = XOR().xorDecode(PrefUtil.getValue("api_key", "") as String);
-
-    _baseUrl = "http://localhost:3000/api";
-    _apiKey = "super_secret";
+    _baseUrl =
+        PrefUtil.getValue("base_url", "http://localhost:3000/api") as String;
+    _apiKey = XOR().xorDecode(PrefUtil.getValue("api_key", "") as String);
 
     print('Base URL: $_baseUrl');
     print('API KEY $_apiKey');
@@ -32,6 +29,38 @@ class BackendAPI {
     );
   }
 
+  // Returns null if the test was successful, and a String with a message about the issue if not
+  static Future<String?> test(String baseUrl, String apiKey) async {
+    print('About to test API with baseUrl=$baseUrl and apiKey=$apiKey');
+    Dio dio = Dio(
+      BaseOptions(
+        baseUrl: baseUrl,
+        headers: {
+          HttpHeaders.contentTypeHeader: 'application/json',
+          HttpHeaders.authorizationHeader: 'Bearer $apiKey',
+        },
+      ),
+    );
+
+    try {
+      Response response = await dio.get('/test');
+      return response.toString().contains('OOTT_API_OK')
+          ? null
+          : "URL successfully called but didn't return the expected value. Check your URL and make sure it points to your OOTT backend base URL.";
+    } on DioException catch (e) {
+      if (e.response != null) {
+        if (e.response!.statusCode == 401) {
+          return "Authorization failed, check your API Key.";
+        } else {
+          return "Error querying the given URL (${e.response!.statusCode} - ${e.message ?? 'N/A'})";
+        }
+      } else {
+        // Response was null, something happened while sending the message
+        return "Error sending message to provided URL (${e.message ?? 'no message'})";
+      }
+    }
+  }
+
   late String _baseUrl;
   late String _apiKey;
   late Dio _dio;

frontend/lib/utils/ui_snackbars.dart

@@ -0,0 +1,31 @@
+import 'package:flutter/material.dart';
+
+class UISnackbars {
+  static void showError(BuildContext context, String message) {
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(
+        content: Text(
+          message,
+          style: TextStyle(color: Theme.of(context).colorScheme.onError),
+        ),
+        behavior: SnackBarBehavior.floating,
+        showCloseIcon: true,
+        backgroundColor: Theme.of(context).colorScheme.error,
+      ),
+    );
+  }
+
+  static void showSuccess(BuildContext context, String message) {
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(
+        content: Text(
+          message,
+          style: TextStyle(color: Theme.of(context).colorScheme.onPrimary),
+        ),
+        behavior: SnackBarBehavior.floating,
+        showCloseIcon: true,
+        backgroundColor: Colors.lightGreen,
+      ),
+    );
+  }
+}