custom user agent

app/lib/features/settings/presentation/screens/web_engine_settings.dart

@@ -1,7 +1,9 @@
 import 'package:fading_scroll/fading_scroll.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:flutter_material_design_icons/flutter_material_design_icons.dart';
 import 'package:flutter_mozilla_components/flutter_mozilla_components.dart';
+import 'package:go_router/go_router.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:lensai/core/routing/routes.dart';
 import 'package:lensai/extensions/nullable.dart';
@@ -10,6 +12,7 @@ import 'package:lensai/features/user/data/models/engine_settings.dart';
 import 'package:lensai/features/user/data/models/general_settings.dart';
 import 'package:lensai/features/user/domain/repositories/engine_settings.dart';
 import 'package:lensai/features/user/domain/repositories/general_settings.dart';
+import 'package:universal_io/io.dart';
 
 class WebEngineSettingsScreen extends HookConsumerWidget {
   const WebEngineSettingsScreen();
@@ -19,6 +22,11 @@ class WebEngineSettingsScreen extends HookConsumerWidget {
     final generalSettings = ref.watch(generalSettingsRepositoryProvider);
     final engineSettings = ref.watch(engineSettingsRepositoryProvider);
 
+    final userAgentTextController = useTextEditingController(
+      text: engineSettings.userAgent,
+      keys: [engineSettings.userAgent],
+    );
+
     return Scaffold(
       appBar: AppBar(title: const Text('Web Engine Settings')),
       body: FadingScroll(
@@ -297,6 +305,56 @@ class WebEngineSettingsScreen extends HookConsumerWidget {
                   ],
                 ),
               ),
+              ListTile(
+                leading: const Icon(MdiIcons.cardAccountDetails),
+                title: TextField(
+                  controller: userAgentTextController,
+                  decoration: const InputDecoration(
+                    labelText: 'Custom User Agent',
+                    floatingLabelBehavior: FloatingLabelBehavior.always,
+                    hintText: 'Mozilla/5.0 …',
+                  ),
+                  onSubmitted: (value) async {
+                    await ref
+                        .read(saveEngineSettingsControllerProvider.notifier)
+                        .save(
+                          (currentSettings) =>
+                              currentSettings.copyWith.userAgent(value),
+                        );
+
+                    if (context.mounted) {
+                      final restart = await showDialog<bool>(
+                        context: context,
+                        builder:
+                            (context) => AlertDialog(
+                              title: const Text('User Agent Changed'),
+                              content: const Text(
+                                'The app needs to restart for the new user agent to take effect',
+                              ),
+                              actions: [
+                                TextButton(
+                                  onPressed: () {
+                                    context.pop(false);
+                                  },
+                                  child: const Text('Later'),
+                                ),
+                                TextButton(
+                                  onPressed: () {
+                                    context.pop(true);
+                                  },
+                                  child: const Text('Restart Now'),
+                                ),
+                              ],
+                            ),
+                      );
+
+                      if (restart == true) {
+                        exit(0);
+                      }
+                    }
+                  },
+                ),
+              ),
               ListTile(
                 title: const Text('Web Engine Hardening'),
                 contentPadding: const EdgeInsets.symmetric(

app/lib/features/user/data/models/engine_settings.dart

@@ -46,6 +46,7 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
     required super.cookieBannerHandlingGlobalRules,
     required super.cookieBannerHandlingGlobalRulesSubFrames,
     required super.webContentIsolationStrategy,
+    required super.userAgent,
   });
 
   EngineSettings.withDefaults({
@@ -59,6 +60,7 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
     bool? cookieBannerHandlingGlobalRules,
     bool? cookieBannerHandlingGlobalRulesSubFrames,
     WebContentIsolationStrategy? webContentIsolationStrategy,
+    super.userAgent,
   }) : super(
          javascriptEnabled: javascriptEnabled ?? true,
          trackingProtectionPolicy:
@@ -97,5 +99,6 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
     super.cookieBannerHandlingGlobalRules,
     super.cookieBannerHandlingGlobalRulesSubFrames,
     super.webContentIsolationStrategy,
+    super.userAgent,
   ];
 }

app/lib/features/user/data/models/engine_settings.g.dart

@@ -39,6 +39,8 @@ abstract class _$EngineSettingsCWProxy {
     WebContentIsolationStrategy? webContentIsolationStrategy,
   );
 
+  EngineSettings userAgent(String? userAgent);
+
   /// This function **does support** nullification of nullable fields. All `null` values passed to `non-nullable` fields will be ignored. You can also use `EngineSettings(...).copyWith.fieldName(...)` to override fields one at a time with nullification support.
   ///
   /// Usage
@@ -56,6 +58,7 @@ abstract class _$EngineSettingsCWProxy {
     bool? cookieBannerHandlingGlobalRules,
     bool? cookieBannerHandlingGlobalRulesSubFrames,
     WebContentIsolationStrategy? webContentIsolationStrategy,
+    String? userAgent,
   });
 }
 
@@ -118,6 +121,9 @@ class _$EngineSettingsCWProxyImpl implements _$EngineSettingsCWProxy {
     WebContentIsolationStrategy? webContentIsolationStrategy,
   ) => this(webContentIsolationStrategy: webContentIsolationStrategy);
 
+  @override
+  EngineSettings userAgent(String? userAgent) => this(userAgent: userAgent);
+
   @override
   /// This function **does support** nullification of nullable fields. All `null` values passed to `non-nullable` fields will be ignored. You can also use `EngineSettings(...).copyWith.fieldName(...)` to override fields one at a time with nullification support.
   ///
@@ -138,6 +144,7 @@ class _$EngineSettingsCWProxyImpl implements _$EngineSettingsCWProxy {
     Object? cookieBannerHandlingGlobalRulesSubFrames =
         const $CopyWithPlaceholder(),
     Object? webContentIsolationStrategy = const $CopyWithPlaceholder(),
+    Object? userAgent = const $CopyWithPlaceholder(),
   }) {
     return EngineSettings(
       javascriptEnabled:
@@ -193,6 +200,11 @@ class _$EngineSettingsCWProxyImpl implements _$EngineSettingsCWProxy {
               ? _value.webContentIsolationStrategy
               // ignore: cast_nullable_to_non_nullable
               : webContentIsolationStrategy as WebContentIsolationStrategy?,
+      userAgent:
+          userAgent == const $CopyWithPlaceholder()
+              ? _value.userAgent
+              // ignore: cast_nullable_to_non_nullable
+              : userAgent as String?,
     );
   }
 }
@@ -239,11 +251,13 @@ EngineSettings _$EngineSettingsFromJson(Map<String, dynamic> json) =>
         _$WebContentIsolationStrategyEnumMap,
         json['webContentIsolationStrategy'],
       ),
+      userAgent: json['userAgent'] as String?,
     );
 
 Map<String, dynamic> _$EngineSettingsToJson(
   EngineSettings instance,
 ) => <String, dynamic>{
+  'userAgent': instance.userAgent,
   'javascriptEnabled': instance.javascriptEnabled,
   'trackingProtectionPolicy':
       _$TrackingProtectionPolicyEnumMap[instance.trackingProtectionPolicy]!,

app/lib/features/user/domain/repositories/engine_settings.dart

@@ -82,6 +82,10 @@ class EngineSettingsRepository extends _$EngineSettingsRepository {
                   DriftSqlType.string,
                   db.typeMapping,
                 ),
+            'userAgent': settings['userAgent']?.readAs(
+              DriftSqlType.string,
+              db.typeMapping,
+            ),
           });
         });
 

app/lib/features/user/domain/repositories/engine_settings.g.dart

@@ -7,7 +7,7 @@ part of 'engine_settings.dart';
 // **************************************************************************
 
 String _$engineSettingsRepositoryHash() =>
-    r'bd255f91f7cee702d9cfcb10bfdf3cd013234901';
+    r'87e308c8bd4390d1d5c401532a0c35cd96f6176e';
 
 /// See also [EngineSettingsRepository].
 @ProviderFor(EngineSettingsRepository)

packages/flutter_mozilla_components/android/src/main/kotlin/eu/lensai/flutter_mozilla_components/api/GeckoEngineSettingsApiImpl.kt

@@ -103,6 +103,9 @@ class GeckoEngineSettingsApiImpl : GeckoEngineSettingsApi {
                 WebContentIsolationStrategy.ISOLATE_HIGH_VALUE -> mozilla.components.concept.engine.fission.WebContentIsolationStrategy.ISOLATE_HIGH_VALUE
             }
         }
+        if(settings.userAgent != null) {
+            components.core.engineSettings.userAgentString = settings.userAgent;
+        }
     }
 
     override fun updateRuntimeSettings(settings: GeckoEngineSettings) {
@@ -149,6 +152,10 @@ class GeckoEngineSettingsApiImpl : GeckoEngineSettingsApi {
         if(settings.webContentIsolationStrategy != null) {
             components.core.engine.settings.webContentIsolationStrategy = components.core.engineSettings.webContentIsolationStrategy
         }
+        if(settings.userAgent != null) {
+            components.core.engine.settings.userAgentString = components.core.engineSettings.userAgentString
+            reloadSession = true
+        }
 
         if(reloadSession) {
             components.useCases.sessionUseCases.reload()

packages/flutter_mozilla_components/android/src/main/kotlin/eu/lensai/flutter_mozilla_components/pigeons/Gecko.g.kt

@@ -1451,7 +1451,8 @@ data class GeckoEngineSettings (
   val cookieBannerHandlingModePrivateBrowsing: CookieBannerHandlingMode? = null,
   val cookieBannerHandlingGlobalRules: Boolean? = null,
   val cookieBannerHandlingGlobalRulesSubFrames: Boolean? = null,
-  val webContentIsolationStrategy: WebContentIsolationStrategy? = null
+  val webContentIsolationStrategy: WebContentIsolationStrategy? = null,
+  val userAgent: String? = null
 )
  {
   companion object {
@@ -1466,7 +1467,8 @@ data class GeckoEngineSettings (
       val cookieBannerHandlingGlobalRules = pigeonVar_list[7] as Boolean?
       val cookieBannerHandlingGlobalRulesSubFrames = pigeonVar_list[8] as Boolean?
       val webContentIsolationStrategy = pigeonVar_list[9] as WebContentIsolationStrategy?
-      return GeckoEngineSettings(javascriptEnabled, trackingProtectionPolicy, httpsOnlyMode, globalPrivacyControlEnabled, preferredColorScheme, cookieBannerHandlingMode, cookieBannerHandlingModePrivateBrowsing, cookieBannerHandlingGlobalRules, cookieBannerHandlingGlobalRulesSubFrames, webContentIsolationStrategy)
+      val userAgent = pigeonVar_list[10] as String?
+      return GeckoEngineSettings(javascriptEnabled, trackingProtectionPolicy, httpsOnlyMode, globalPrivacyControlEnabled, preferredColorScheme, cookieBannerHandlingMode, cookieBannerHandlingModePrivateBrowsing, cookieBannerHandlingGlobalRules, cookieBannerHandlingGlobalRulesSubFrames, webContentIsolationStrategy, userAgent)
     }
   }
   fun toList(): List<Any?> {
@@ -1481,6 +1483,7 @@ data class GeckoEngineSettings (
       cookieBannerHandlingGlobalRules,
       cookieBannerHandlingGlobalRulesSubFrames,
       webContentIsolationStrategy,
+      userAgent,
     )
   }
   override fun equals(other: Any?): Boolean {

packages/flutter_mozilla_components/lib/src/pigeons/gecko.g.dart

@@ -1790,6 +1790,7 @@ class GeckoEngineSettings {
     this.cookieBannerHandlingGlobalRules,
     this.cookieBannerHandlingGlobalRulesSubFrames,
     this.webContentIsolationStrategy,
+    this.userAgent,
   });
 
   bool? javascriptEnabled;
@@ -1812,6 +1813,8 @@ class GeckoEngineSettings {
 
   WebContentIsolationStrategy? webContentIsolationStrategy;
 
+  String? userAgent;
+
   List<Object?> _toList() {
     return <Object?>[
       javascriptEnabled,
@@ -1824,6 +1827,7 @@ class GeckoEngineSettings {
       cookieBannerHandlingGlobalRules,
       cookieBannerHandlingGlobalRulesSubFrames,
       webContentIsolationStrategy,
+      userAgent,
     ];
   }
 
@@ -1843,6 +1847,7 @@ class GeckoEngineSettings {
       cookieBannerHandlingGlobalRules: result[7] as bool?,
       cookieBannerHandlingGlobalRulesSubFrames: result[8] as bool?,
       webContentIsolationStrategy: result[9] as WebContentIsolationStrategy?,
+      userAgent: result[10] as String?,
     );
   }
 

packages/flutter_mozilla_components/pigeons/gecko.dart

@@ -549,6 +549,7 @@ class GeckoEngineSettings {
   final bool? cookieBannerHandlingGlobalRules;
   final bool? cookieBannerHandlingGlobalRulesSubFrames;
   final WebContentIsolationStrategy? webContentIsolationStrategy;
+  final String? userAgent;
 
   GeckoEngineSettings(
     this.javascriptEnabled,
@@ -561,6 +562,7 @@ class GeckoEngineSettings {
     this.cookieBannerHandlingGlobalRules,
     this.cookieBannerHandlingGlobalRulesSubFrames,
     this.webContentIsolationStrategy,
+    this.userAgent,
   );
 }