feat(user-agent): add default user agent setting

lib/l10n/app_en.arb

@@ -559,5 +559,6 @@
   "line_height": "Line Height",
   "show_scroll_percentage": "Show Scroll Percentage",
   "remove_extra_paragraph_spacing": "Remove Extra Paragraph Spacing",
-  "select_label_color": "Select {label} Color"
+  "select_label_color": "Select {label} Color",
+  "default_user_agent": "Defaul user agent"
 }

lib/l10n/generated/app_localizations.dart

@@ -3430,6 +3430,12 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'Select {label} Color'**
   String select_label_color(Object label);
+
+  /// No description provided for @default_user_agent.
+  ///
+  /// In en, this message translates to:
+  /// **'Defaul user agent'**
+  String get default_user_agent;
 }
 
 class _AppLocalizationsDelegate

lib/l10n/generated/app_localizations_ar.dart

@@ -1775,4 +1775,7 @@ class AppLocalizationsAr extends AppLocalizations {
   String select_label_color(Object label) {
     return 'تحديد لون $label';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_as.dart

@@ -1781,4 +1781,7 @@ class AppLocalizationsAs extends AppLocalizations {
   String select_label_color(Object label) {
     return '$label ৰং নিৰ্বাচন কৰক';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_de.dart

@@ -1796,4 +1796,7 @@ class AppLocalizationsDe extends AppLocalizations {
   String select_label_color(Object label) {
     return 'Farbe für $label auswählen';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_en.dart

@@ -1775,4 +1775,7 @@ class AppLocalizationsEn extends AppLocalizations {
   String select_label_color(Object label) {
     return 'Select $label Color';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_es.dart

@@ -1804,6 +1804,9 @@ class AppLocalizationsEs extends AppLocalizations {
   String select_label_color(Object label) {
     return 'Seleccionar color de $label';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }
 
 /// The translations for Spanish Castilian, as used in Latin America and the Caribbean (`es_419`).

lib/l10n/generated/app_localizations_fr.dart

@@ -1804,4 +1804,7 @@ class AppLocalizationsFr extends AppLocalizations {
   String select_label_color(Object label) {
     return 'Sélectionner la couleur $label';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_hi.dart

@@ -1781,4 +1781,7 @@ class AppLocalizationsHi extends AppLocalizations {
   String select_label_color(Object label) {
     return '$label रंग चुनें';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_id.dart

@@ -1787,4 +1787,7 @@ class AppLocalizationsId extends AppLocalizations {
   String select_label_color(Object label) {
     return 'Pilih Warna $label';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_it.dart

@@ -1801,4 +1801,7 @@ class AppLocalizationsIt extends AppLocalizations {
   String select_label_color(Object label) {
     return 'Seleziona colore $label';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_ja.dart

@@ -1752,4 +1752,7 @@ class AppLocalizationsJa extends AppLocalizations {
   String select_label_color(Object label) {
     return '$labelの色を選択';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_pt.dart

@@ -1799,6 +1799,9 @@ class AppLocalizationsPt extends AppLocalizations {
   String select_label_color(Object label) {
     return 'Selecionar cor de $label';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }
 
 /// The translations for Portuguese, as used in Brazil (`pt_BR`).

lib/l10n/generated/app_localizations_ru.dart

@@ -1804,4 +1804,7 @@ class AppLocalizationsRu extends AppLocalizations {
   String select_label_color(Object label) {
     return 'Выбрать цвет $label';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_th.dart

@@ -1775,4 +1775,7 @@ class AppLocalizationsTh extends AppLocalizations {
   String select_label_color(Object label) {
     return 'เลือกสี $label';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_tr.dart

@@ -1787,4 +1787,7 @@ class AppLocalizationsTr extends AppLocalizations {
   String select_label_color(Object label) {
     return '$label Rengini Seç';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/l10n/generated/app_localizations_zh.dart

@@ -1733,4 +1733,7 @@ class AppLocalizationsZh extends AppLocalizations {
   String select_label_color(Object label) {
     return '选择 $label 颜色';
   }
+
+  @override
+  String get default_user_agent => 'Defaul user agent';
 }

lib/modules/more/settings/general/general_screen.dart

@@ -35,6 +35,7 @@ class _GeneralStateScreen extends ConsumerState<GeneralScreen> {
   Widget build(BuildContext context) {
     final l10n = l10nLocalizations(context);
     final customDns = ref.watch(customDnsStateProvider);
+    final userAgent = ref.watch(userAgentStateProvider);
     final enableDiscordRpc = ref.watch(enableDiscordRpcStateProvider);
     final hideDiscordRpcInIncognito = ref.watch(
       hideDiscordRpcInIncognitoStateProvider,
@@ -57,6 +58,14 @@ class _GeneralStateScreen extends ConsumerState<GeneralScreen> {
                 style: TextStyle(fontSize: 11, color: context.secondaryColor),
               ),
             ),
+            ListTile(
+              onTap: () => _showDefaultUserAgentDialog(context, ref, userAgent),
+              title: Text(context.l10n.default_user_agent),
+              subtitle: Text(
+                userAgent,
+                style: TextStyle(fontSize: 11, color: context.secondaryColor),
+              ),
+            ),
             Container(
               margin: const EdgeInsets.all(20.0),
               padding: const EdgeInsets.all(10.0),
@@ -373,3 +382,76 @@ class _GeneralStateScreen extends ConsumerState<GeneralScreen> {
     );
   }
 }
+
+void _showDefaultUserAgentDialog(
+  BuildContext context,
+  WidgetRef ref,
+  String ua,
+) {
+  final uaController = TextEditingController(text: ua);
+  showDialog(
+    context: context,
+    builder: (context) => StatefulBuilder(
+      builder: (context, setState) {
+        return AlertDialog(
+          title: Text(
+            context.l10n.default_user_agent,
+            style: const TextStyle(fontSize: 30),
+          ),
+          content: SizedBox(
+            width: context.width(0.8),
+            height: context.height(0.3),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const SizedBox(height: 10),
+                Padding(
+                  padding: const EdgeInsets.symmetric(vertical: 10),
+                  child: TextFormField(
+                    controller: uaController,
+                    autofocus: true,
+
+                    decoration: InputDecoration(
+                      hintText: "Mozilla/5.0 (Windows NT 10.0; Win64; x64)...",
+                      filled: false,
+                      contentPadding: const EdgeInsets.all(12),
+                      enabledBorder: OutlineInputBorder(
+                        borderSide: const BorderSide(width: 0.4),
+                        borderRadius: BorderRadius.circular(5),
+                      ),
+                      focusedBorder: OutlineInputBorder(
+                        borderSide: const BorderSide(),
+                        borderRadius: BorderRadius.circular(5),
+                      ),
+                      border: OutlineInputBorder(
+                        borderRadius: BorderRadius.circular(5),
+                        borderSide: const BorderSide(),
+                      ),
+                    ),
+                  ),
+                ),
+                const SizedBox(height: 20),
+                Padding(
+                  padding: const EdgeInsets.symmetric(vertical: 10),
+                  child: SizedBox(
+                    width: context.width(1),
+                    child: ElevatedButton(
+                      onPressed: () async {
+                        ref
+                            .watch(userAgentStateProvider.notifier)
+                            .set(uaController.text);
+                        if (!context.mounted) return;
+                        Navigator.pop(context);
+                      },
+                      child: Text(context.l10n.dialog_confirm),
+                    ),
+                  ),
+                ),
+              ],
+            ),
+          ),
+        );
+      },
+    ),
+  );
+}

lib/modules/more/settings/general/providers/general_state_provider.dart

@@ -123,3 +123,23 @@ class RpcShowCoverImageState extends _$RpcShowCoverImageState {
     );
   }
 }
+
+@riverpod
+class UserAgentState extends _$UserAgentState {
+  @override
+  String build() {
+    return isar.settings.getSync(227)!.userAgent!;
+  }
+
+  void set(String value) {
+    final settings = isar.settings.getSync(227);
+    state = value;
+    isar.writeTxnSync(
+      () => isar.settings.putSync(
+        settings!
+          ..userAgent = value
+          ..updatedAt = DateTime.now().millisecondsSinceEpoch,
+      ),
+    );
+  }
+}

lib/modules/more/settings/general/providers/general_state_provider.g.dart

@@ -334,3 +334,56 @@ abstract class _$RpcShowCoverImageState extends $Notifier<bool> {
     element.handleValue(ref, created);
   }
 }
+
+@ProviderFor(UserAgentState)
+const userAgentStateProvider = UserAgentStateProvider._();
+
+final class UserAgentStateProvider
+    extends $NotifierProvider<UserAgentState, String> {
+  const UserAgentStateProvider._()
+    : super(
+        from: null,
+        argument: null,
+        retry: null,
+        name: r'userAgentStateProvider',
+        isAutoDispose: true,
+        dependencies: null,
+        $allTransitiveDependencies: null,
+      );
+
+  @override
+  String debugGetCreateSourceHash() => _$userAgentStateHash();
+
+  @$internal
+  @override
+  UserAgentState create() => UserAgentState();
+
+  /// {@macro riverpod.override_with_value}
+  Override overrideWithValue(String value) {
+    return $ProviderOverride(
+      origin: this,
+      providerOverride: $SyncValueProvider<String>(value),
+    );
+  }
+}
+
+String _$userAgentStateHash() => r'e1e9ba333c5dc753813082190da4ee51ad587bb9';
+
+abstract class _$UserAgentState extends $Notifier<String> {
+  String build();
+  @$mustCallSuper
+  @override
+  void runBuild() {
+    final created = build();
+    final ref = this.ref as $Ref<String, String>;
+    final element =
+        ref.element
+            as $ClassProviderElement<
+              AnyNotifier<String, String>,
+              String,
+              Object?,
+              Object?
+            >;
+    element.handleValue(ref, created);
+  }
+}

lib/modules/webview/webview.dart

@@ -7,8 +7,10 @@ import 'package:flutter_inappwebview/flutter_inappwebview.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import 'package:mangayomi/main.dart';
+import 'package:mangayomi/modules/more/settings/general/providers/general_state_provider.dart';
 import 'package:mangayomi/providers/l10n_providers.dart';
 import 'package:mangayomi/services/http/m_client.dart';
+import 'package:mangayomi/utils/constant.dart';
 import 'package:mangayomi/utils/global_style.dart';
 import 'package:url_launcher/url_launcher.dart';
 import 'package:share_plus/share_plus.dart';
@@ -53,6 +55,10 @@ class _MangaWebViewState extends ConsumerState<MangaWebView> {
 
   Webview? _desktopWebview;
   Future<void> _runWebViewDesktop() async {
+    String? ua = ref.watch(userAgentStateProvider);
+    if (ua == defaultUserAgent) {
+      ua = null;
+    }
     if (Platform.isLinux) {
       _desktopWebview = await WebviewWindow.create();
 
@@ -110,6 +116,7 @@ class _MangaWebViewState extends ConsumerState<MangaWebView> {
           webViewSettings: InAppWebViewSettings(
             isInspectable: kDebugMode,
             useShouldOverrideUrlLoading: true,
+            userAgent: ua,
           ),
         ),
       );