added support for custom addon collections

app/lib/core/routing/routes.dart

@@ -38,6 +38,7 @@ import 'package:weblibre/features/geckoview/features/tabs/presentation/screens/c
 import 'package:weblibre/features/geckoview/features/tabs/presentation/screens/container_list.dart';
 import 'package:weblibre/features/geckoview/features/tabs/presentation/screens/container_selection.dart';
 import 'package:weblibre/features/onboarding/presentation/onboarding.dart';
+import 'package:weblibre/features/settings/presentation/screens/addon_collection.dart';
 import 'package:weblibre/features/settings/presentation/screens/bang_settings.dart';
 import 'package:weblibre/features/settings/presentation/screens/developer_settings.dart';
 import 'package:weblibre/features/settings/presentation/screens/general_settings.dart';

app/lib/core/routing/routes.g.dart

@@ -112,6 +112,13 @@ RouteBase get $settingsRoute => GoRouteData.$route(
       path: 'developer',
       name: 'DeveloperSettingsRoute',
       factory: $DeveloperSettingsRoute._fromState,
+      routes: [
+        GoRouteData.$route(
+          path: 'addon_collection',
+          name: 'AddonCollectionRoute',
+          factory: $AddonCollectionRoute._fromState,
+        ),
+      ],
     ),
   ],
 );
@@ -268,6 +275,28 @@ mixin $DeveloperSettingsRoute on GoRouteData {
   void replace(BuildContext context) => context.replace(location);
 }
 
+mixin $AddonCollectionRoute on GoRouteData {
+  static AddonCollectionRoute _fromState(GoRouterState state) =>
+      AddonCollectionRoute();
+
+  @override
+  String get location =>
+      GoRouteData.$location('/settings/developer/addon_collection');
+
+  @override
+  void go(BuildContext context) => context.go(location);
+
+  @override
+  Future<T?> push<T>(BuildContext context) => context.push<T>(location);
+
+  @override
+  void pushReplacement(BuildContext context) =>
+      context.pushReplacement(location);
+
+  @override
+  void replace(BuildContext context) => context.replace(location);
+}
+
 RouteBase get $browserRoute => GoRouteData.$route(
   path: '/',
   name: 'BrowserRoute',

app/lib/core/routing/routes.settings.dart

@@ -47,6 +47,12 @@ part of 'routes.dart';
     TypedGoRoute<DeveloperSettingsRoute>(
       name: 'DeveloperSettingsRoute',
       path: 'developer',
+      routes: [
+        TypedGoRoute<AddonCollectionRoute>(
+          name: 'AddonCollectionRoute',
+          path: 'addon_collection',
+        ),
+      ],
     ),
   ],
 )
@@ -85,6 +91,13 @@ class DeveloperSettingsRoute extends GoRouteData with $DeveloperSettingsRoute {
   }
 }
 
+class AddonCollectionRoute extends GoRouteData with $AddonCollectionRoute {
+  @override
+  Widget build(BuildContext context, GoRouterState state) {
+    return const AddonCollectionScreen();
+  }
+}
+
 class WebEngineHardeningRoute extends GoRouteData
     with $WebEngineHardeningRoute {
   @override

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

@@ -0,0 +1,143 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_hooks/flutter_hooks.dart';
+import 'package:flutter_mozilla_components/flutter_mozilla_components.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:universal_io/io.dart';
+import 'package:weblibre/features/user/data/models/engine_settings.dart';
+import 'package:weblibre/features/user/domain/repositories/engine_settings.dart';
+import 'package:weblibre/utils/form_validators.dart';
+
+const _defaultServerUrl = 'https://services.addons.mozilla.org';
+
+class AddonCollectionScreen extends HookConsumerWidget {
+  const AddonCollectionScreen({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final formKey = useMemoized(() => GlobalKey<FormState>());
+
+    final addonCollectionSetting = ref.watch(
+      engineSettingsWithDefaultsProvider.select(
+        (value) => value.addonCollection,
+      ),
+    );
+
+    final serverURLController = useTextEditingController(
+      text: addonCollectionSetting?.serverURL ?? _defaultServerUrl,
+      keys: [addonCollectionSetting],
+    );
+
+    final collectionUserController = useTextEditingController(
+      text: addonCollectionSetting?.collectionUser,
+      keys: [addonCollectionSetting],
+    );
+
+    final collectionNameController = useTextEditingController(
+      text: addonCollectionSetting?.collectionName,
+      keys: [addonCollectionSetting],
+    );
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Custom Extension Collection'),
+        actions: [
+          if (addonCollectionSetting != null)
+            IconButton(
+              onPressed: () async {
+                await ref
+                    .read(engineSettingsRepositoryProvider.notifier)
+                    .updateSettings(
+                      (currentSettings) =>
+                          currentSettings.copyWith.addonCollection(null),
+                    );
+
+                unawaited(
+                  Future.delayed(const Duration(seconds: 1)).whenComplete(() {
+                    exit(0);
+                  }),
+                );
+              },
+              icon: const Icon(Icons.delete),
+            ),
+        ],
+      ),
+      body: Form(
+        key: formKey,
+        child: SafeArea(
+          child: Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 16.0),
+            child: ListView(
+              children: [
+                TextFormField(
+                  controller: serverURLController,
+                  decoration: const InputDecoration(
+                    label: Text('Server URL'),
+                    hintText: _defaultServerUrl,
+                    floatingLabelBehavior: FloatingLabelBehavior.always,
+                  ),
+                  keyboardType: TextInputType.url,
+                  validator: (value) {
+                    return validateUrl(
+                      value,
+                      onlyHttpProtocol: true,
+                      eagerParsing: false,
+                    );
+                  },
+                ),
+                const SizedBox(height: 8),
+                TextFormField(
+                  controller: collectionUserController,
+                  decoration: const InputDecoration(
+                    label: Text('Collection User'),
+                    floatingLabelBehavior: FloatingLabelBehavior.always,
+                  ),
+                  validator: validateRequired,
+                ),
+                const SizedBox(height: 8),
+                TextFormField(
+                  controller: collectionNameController,
+                  decoration: const InputDecoration(
+                    label: Text('Collection Name'),
+                    floatingLabelBehavior: FloatingLabelBehavior.always,
+                  ),
+                  validator: validateRequired,
+                ),
+                const SizedBox(height: 32),
+                FilledButton(
+                  onPressed: () async {
+                    if (formKey.currentState?.validate() == true) {
+                      await ref
+                          .read(engineSettingsRepositoryProvider.notifier)
+                          .updateSettings(
+                            (
+                              currentSettings,
+                            ) => currentSettings.copyWith.addonCollection(
+                              AddonCollection(
+                                serverURL: serverURLController.text,
+                                collectionUser: collectionUserController.text,
+                                collectionName: collectionNameController.text,
+                              ),
+                            ),
+                          );
+
+                      unawaited(
+                        Future.delayed(const Duration(seconds: 1)).whenComplete(
+                          () {
+                            exit(0);
+                          },
+                        ),
+                      );
+                    }
+                  },
+                  child: const Text('Save & Restart Browser'),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

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

@@ -29,6 +29,7 @@ import 'package:go_router/go_router.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:universal_io/io.dart';
 import 'package:weblibre/core/logger.dart';
+import 'package:weblibre/core/routing/routes.dart';
 import 'package:weblibre/features/settings/presentation/controllers/save_settings.dart';
 import 'package:weblibre/features/settings/presentation/widgets/custom_list_tile.dart';
 import 'package:weblibre/features/user/data/models/engine_settings.dart';
@@ -198,6 +199,17 @@ class DeveloperSettingsScreen extends HookConsumerWidget {
                     label: const Text('Copy'),
                   ),
                 ),
+              ListTile(
+                leading: const Icon(MdiIcons.puzzle),
+                title: const Text('Custom Extension Collection'),
+                subtitle: const Text(
+                  'Custom Add-on Collections are curated lists of extensions that users can create and share.',
+                ),
+                trailing: const Icon(Icons.chevron_right),
+                onTap: () async {
+                  await AddonCollectionRoute().push(context);
+                },
+              ),
             ],
           );
         },

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

@@ -17,10 +17,13 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
+import 'dart:convert';
+
 import 'package:copy_with_extension/copy_with_extension.dart';
 import 'package:fast_equatable/fast_equatable.dart';
 import 'package:flutter_mozilla_components/flutter_mozilla_components.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:nullability/nullability.dart';
 
 part 'engine_settings.g.dart';
 
@@ -60,6 +63,9 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
 
   final BounceTrackingProtectionMode bounceTrackingProtectionMode;
 
+  @JsonKey(fromJson: _addonCollectionFromJson, toJson: _addonCollectionToJson)
+  final AddonCollection? addonCollection;
+
   @override
   @JsonKey(includeFromJson: false, includeToJson: false)
   ContentBlocking get contentBlocking => ContentBlocking(
@@ -85,6 +91,7 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
     required super.enterpriseRootsEnabled,
     required this.queryParameterStripping,
     required this.bounceTrackingProtectionMode,
+    required this.addonCollection,
   });
 
   EngineSettings.withDefaults({
@@ -102,6 +109,7 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
     BounceTrackingProtectionMode? bounceTrackingProtectionMode,
     super.userAgent,
     bool? enterpriseRootsEnabled,
+    this.addonCollection,
   }) : queryParameterStripping =
            queryParameterStripping ?? QueryParameterStripping.disabled,
        bounceTrackingProtectionMode =
@@ -129,6 +137,14 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
          enterpriseRootsEnabled: enterpriseRootsEnabled ?? false,
        );
 
+  static AddonCollection? _addonCollectionFromJson(String? json) =>
+      json.mapNotNull(
+        (collection) => AddonCollection.decode(jsonDecode(collection) as List),
+      );
+
+  static String? _addonCollectionToJson(AddonCollection? collection) =>
+      collection.mapNotNull((collection) => jsonEncode(collection.encode()));
+
   factory EngineSettings.fromJson(Map<String, dynamic> json) =>
       _$EngineSettingsFromJson(json);
 
@@ -136,19 +152,8 @@ class EngineSettings extends GeckoEngineSettings with FastEquatable {
 
   @override
   List<Object?> get hashParameters => [
-    super.javascriptEnabled,
-    super.trackingProtectionPolicy,
-    super.httpsOnlyMode,
-    super.globalPrivacyControlEnabled,
-    super.preferredColorScheme,
-    super.cookieBannerHandlingMode,
-    super.cookieBannerHandlingModePrivateBrowsing,
-    super.cookieBannerHandlingGlobalRules,
-    super.cookieBannerHandlingGlobalRulesSubFrames,
-    super.webContentIsolationStrategy,
-    super.userAgent,
     queryParameterStripping,
     bounceTrackingProtectionMode,
-    super.enterpriseRootsEnabled,
+    addonCollection,
   ];
 }

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

@@ -51,6 +51,8 @@ abstract class _$EngineSettingsCWProxy {
     BounceTrackingProtectionMode bounceTrackingProtectionMode,
   );
 
+  EngineSettings addonCollection(AddonCollection? addonCollection);
+
   /// Creates a new instance with the provided field values.
   /// Passing `null` to a nullable field nullifies it, while `null` for a non-nullable field is ignored. To update a single field use `EngineSettings(...).copyWith.fieldName(value)`.
   ///
@@ -73,6 +75,7 @@ abstract class _$EngineSettingsCWProxy {
     bool? enterpriseRootsEnabled,
     QueryParameterStripping queryParameterStripping,
     BounceTrackingProtectionMode bounceTrackingProtectionMode,
+    AddonCollection? addonCollection,
   });
 }
 
@@ -153,6 +156,10 @@ class _$EngineSettingsCWProxyImpl implements _$EngineSettingsCWProxy {
     BounceTrackingProtectionMode bounceTrackingProtectionMode,
   ) => call(bounceTrackingProtectionMode: bounceTrackingProtectionMode);
 
+  @override
+  EngineSettings addonCollection(AddonCollection? addonCollection) =>
+      call(addonCollection: addonCollection);
+
   @override
   /// Creates a new instance with the provided field values.
   /// Passing `null` to a nullable field nullifies it, while `null` for a non-nullable field is ignored. To update a single field use `EngineSettings(...).copyWith.fieldName(value)`.
@@ -178,6 +185,7 @@ class _$EngineSettingsCWProxyImpl implements _$EngineSettingsCWProxy {
     Object? enterpriseRootsEnabled = const $CopyWithPlaceholder(),
     Object? queryParameterStripping = const $CopyWithPlaceholder(),
     Object? bounceTrackingProtectionMode = const $CopyWithPlaceholder(),
+    Object? addonCollection = const $CopyWithPlaceholder(),
   }) {
     return EngineSettings(
       javascriptEnabled: javascriptEnabled == const $CopyWithPlaceholder()
@@ -251,6 +259,10 @@ class _$EngineSettingsCWProxyImpl implements _$EngineSettingsCWProxy {
           ? _value.bounceTrackingProtectionMode
           // ignore: cast_nullable_to_non_nullable
           : bounceTrackingProtectionMode as BounceTrackingProtectionMode,
+      addonCollection: addonCollection == const $CopyWithPlaceholder()
+          ? _value.addonCollection
+          // ignore: cast_nullable_to_non_nullable
+          : addonCollection as AddonCollection?,
     );
   }
 }
@@ -308,6 +320,9 @@ EngineSettings _$EngineSettingsFromJson(Map<String, dynamic> json) =>
       ),
       userAgent: json['userAgent'] as String?,
       enterpriseRootsEnabled: json['enterpriseRootsEnabled'] as bool?,
+      addonCollection: EngineSettings._addonCollectionFromJson(
+        json['addonCollection'] as String?,
+      ),
     );
 
 Map<String, dynamic> _$EngineSettingsToJson(
@@ -337,6 +352,9 @@ Map<String, dynamic> _$EngineSettingsToJson(
   'bounceTrackingProtectionMode':
       _$BounceTrackingProtectionModeEnumMap[instance
           .bounceTrackingProtectionMode]!,
+  'addonCollection': EngineSettings._addonCollectionToJson(
+    instance.addonCollection,
+  ),
 };
 
 const _$TrackingProtectionPolicyEnumMap = {

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

@@ -94,6 +94,10 @@ class EngineSettingsRepository extends _$EngineSettingsRepository {
         DriftSqlType.bool,
         db.typeMapping,
       ),
+      'addonCollection': settings['addonCollection']?.readAs(
+        DriftSqlType.string,
+        db.typeMapping,
+      ),
     });
   }
 

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

@@ -34,7 +34,7 @@ final class EngineSettingsRepositoryProvider
 }
 
 String _$engineSettingsRepositoryHash() =>
-    r'd0c2fbe060b5eaee7189f6cb0dd58c97cf5987b5';
+    r'8cf0a615f825ddc6411c2985d2cdc19ef31251cb';
 
 abstract class _$EngineSettingsRepository
     extends $StreamNotifier<EngineSettings> {

app/lib/main.dart

@@ -91,6 +91,7 @@ void main() async {
             await GeckoBrowserService().initialize(
               kDebugMode ? LogLevel.debug : LogLevel.warn,
               engineSettings.contentBlocking,
+              engineSettings.addonCollection,
             );
 
             await ref

app/lib/utils/form_validators.dart

@@ -47,3 +47,11 @@ String? validateUrl(
 
   return 'Inavlid URL';
 }
+
+String? validateRequired(String? value, {String message = 'Value required'}) {
+  if (value.isNotEmpty) {
+    return null;
+  }
+
+  return message;
+}

packages/flutter_mozilla_components/android/src/main/kotlin/eu/weblibre/flutter_mozilla_components/Components.kt

@@ -14,6 +14,7 @@ import eu.weblibre.flutter_mozilla_components.components.Features
 import eu.weblibre.flutter_mozilla_components.components.Search
 import eu.weblibre.flutter_mozilla_components.components.Services
 import eu.weblibre.flutter_mozilla_components.components.UseCases
+import eu.weblibre.flutter_mozilla_components.pigeons.AddonCollection
 import eu.weblibre.flutter_mozilla_components.pigeons.BrowserExtensionEvents
 import eu.weblibre.flutter_mozilla_components.pigeons.ContentBlocking
 import eu.weblibre.flutter_mozilla_components.pigeons.GeckoAddonEvents
@@ -37,6 +38,7 @@ class Components(private val context: Context,
                  val selectionAction: SelectionActionDelegate,
                  val logLevel: Log.Priority,
                  val contentBlocking: ContentBlocking,
+                 val addonCollection: AddonCollection?,
                  private val addonEvents: GeckoAddonEvents,
                  private val tabContentEvents: GeckoTabContentEvents,
                  private val extensionEvents: BrowserExtensionEvents

packages/flutter_mozilla_components/android/src/main/kotlin/eu/weblibre/flutter_mozilla_components/GlobalComponents.kt

@@ -7,6 +7,7 @@
 package eu.weblibre.flutter_mozilla_components
 
 import android.content.Context
+import eu.weblibre.flutter_mozilla_components.pigeons.AddonCollection
 import eu.weblibre.flutter_mozilla_components.pigeons.BrowserExtensionEvents
 import eu.weblibre.flutter_mozilla_components.pigeons.ContentBlocking
 import eu.weblibre.flutter_mozilla_components.pigeons.GeckoAddonEvents
@@ -60,7 +61,8 @@ object GlobalComponents {
         tabContentEvents: GeckoTabContentEvents,
         extensionEvents: BrowserExtensionEvents,
         logLevel: Log.Priority,
-        contentBlocking: ContentBlocking
+        contentBlocking: ContentBlocking,
+        addonCollection: AddonCollection?,
     ) {
         Logger.debug("Creating new components")
 
@@ -71,6 +73,7 @@ object GlobalComponents {
             selectionAction,
             logLevel,
             contentBlocking,
+            addonCollection,
             addonEvents,
             tabContentEvents,
             extensionEvents,

packages/flutter_mozilla_components/android/src/main/kotlin/eu/weblibre/flutter_mozilla_components/api/GeckoBrowserApiImpl.kt

@@ -15,6 +15,7 @@ import eu.weblibre.flutter_mozilla_components.GeckoViewFactory
 import eu.weblibre.flutter_mozilla_components.GlobalComponents
 import eu.weblibre.flutter_mozilla_components.activities.NotificationActivity
 import eu.weblibre.flutter_mozilla_components.feature.DefaultSelectionActionDelegate
+import eu.weblibre.flutter_mozilla_components.pigeons.AddonCollection
 import eu.weblibre.flutter_mozilla_components.pigeons.BrowserExtensionEvents
 import eu.weblibre.flutter_mozilla_components.pigeons.ContentBlocking
 import eu.weblibre.flutter_mozilla_components.pigeons.GeckoAddonEvents
@@ -140,7 +141,11 @@ class GeckoBrowserApiImpl : GeckoBrowserApi {
         return GeckoViewBuildConfig.MOZ_APP_VERSION + "-" + GeckoViewBuildConfig.MOZ_APP_BUILDID
     }
 
-    override fun initialize(logLevel: LogLevel, contentBlocking: ContentBlocking) {
+    override fun initialize(
+        logLevel: LogLevel,
+        contentBlocking: ContentBlocking,
+        addonCollection: AddonCollection?
+    ) {
         synchronized(this) {
             if(!isGeckoInitialized) {
                 val geckoLogging = GeckoLogging(_flutterPluginBinding.binaryMessenger)
@@ -154,7 +159,7 @@ class GeckoBrowserApiImpl : GeckoBrowserApi {
 
                 Log.addSink(PriorityAwareLogSink(level, geckoLogging))
 
-                setupGeckoEngine(level, contentBlocking)
+                setupGeckoEngine(level, contentBlocking, addonCollection)
                 isGeckoInitialized = true
             }
         }
@@ -170,7 +175,11 @@ class GeckoBrowserApiImpl : GeckoBrowserApi {
         return false
     }
 
-    private fun setupGeckoEngine(logLevel: Log.Priority, contentBlocking: ContentBlocking) {
+    private fun setupGeckoEngine(
+        logLevel: Log.Priority,
+        contentBlocking: ContentBlocking,
+        addonCollection: AddonCollection?
+    ) {
         val selectionActionEvents = GeckoSelectionActionEvents(_flutterPluginBinding.binaryMessenger)
 
         val selectionActionDelegate = DefaultSelectionActionDelegate(selectionActionEvents) { actions ->
@@ -201,7 +210,8 @@ class GeckoBrowserApiImpl : GeckoBrowserApi {
             tabContentEvents,
             extensionEvents,
             logLevel,
-            contentBlocking
+            contentBlocking,
+            addonCollection
         )
 
         GeckoEngineSettingsApi.setUp(_flutterPluginBinding.binaryMessenger, GeckoEngineSettingsApiImpl())

packages/flutter_mozilla_components/android/src/main/kotlin/eu/weblibre/flutter_mozilla_components/components/Core.kt

@@ -60,9 +60,10 @@ import mozilla.components.feature.webnotifications.WebNotificationFeature
 import mozilla.components.support.base.worker.Frequency
 import java.util.concurrent.TimeUnit
 
-private const val DAY_IN_MINUTES = 24 * 60L
+private const val AMO_COLLECTION_MAX_CACHE_AGE = 24 * 60L
 
-class Core(private val context: Context,
+class Core(
+    private val context: Context,
     private val components: Components,
     private val flutterEvents: GeckoStateEvents,
     private val extensionEvents: BrowserExtensionEvents
@@ -137,22 +138,33 @@ class Core(private val context: Context,
     val addonUpdater by lazy {
         DefaultAddonUpdater(
             context,
-            Frequency(1, TimeUnit.DAYS),
+            Frequency(12, TimeUnit.HOURS),
             components.notificationsDelegate
         )
     }
 
     val addonsProvider by lazy {
+        if (components.addonCollection != null)
             AMOAddonsProvider(
                 context,
                 client,
-            collectionName = "7dfae8669acc4312a65e8ba5553036",
+                serverURL = components.addonCollection.serverURL,
-            maxCacheAgeInMinutes = DAY_IN_MINUTES,
+                collectionUser = components.addonCollection.collectionUser,
+                collectionName = components.addonCollection.collectionName,
+                maxCacheAgeInMinutes = AMO_COLLECTION_MAX_CACHE_AGE
+                ) else
+            AMOAddonsProvider(
+                context,
+                client,
+                maxCacheAgeInMinutes = AMO_COLLECTION_MAX_CACHE_AGE
             )
     }
 
     val supportedAddonsChecker by lazy {
-        DefaultSupportedAddonsChecker(context, Frequency(1, TimeUnit.DAYS))
+        DefaultSupportedAddonsChecker(
+            context,
+            Frequency(12, TimeUnit.HOURS)
+        )
     }
 
     val fileUploadsDirCleaner: FileUploadsDirCleaner by lazy {

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

@@ -2104,6 +2104,40 @@ data class ShareInternetResourceState (
 
   override fun hashCode(): Int = toList().hashCode()
 }
+
+/** Generated class from Pigeon that represents data sent in messages. */
+data class AddonCollection (
+  val serverURL: String,
+  val collectionUser: String,
+  val collectionName: String
+)
+ {
+  companion object {
+    fun fromList(pigeonVar_list: List<Any?>): AddonCollection {
+      val serverURL = pigeonVar_list[0] as String
+      val collectionUser = pigeonVar_list[1] as String
+      val collectionName = pigeonVar_list[2] as String
+      return AddonCollection(serverURL, collectionUser, collectionName)
+    }
+  }
+  fun toList(): List<Any?> {
+    return listOf(
+      serverURL,
+      collectionUser,
+      collectionName,
+    )
+  }
+  override fun equals(other: Any?): Boolean {
+    if (other !is AddonCollection) {
+      return false
+    }
+    if (this === other) {
+      return true
+    }
+    return GeckoPigeonUtils.deepEquals(toList(), other.toList())  }
+
+  override fun hashCode(): Int = toList().hashCode()
+}
 private open class GeckoPigeonCodec : StandardMessageCodec() {
   override fun readValueOfType(type: Byte, buffer: ByteBuffer): Any? {
     return when (type) {
@@ -2402,6 +2436,11 @@ private open class GeckoPigeonCodec : StandardMessageCodec() {
           ShareInternetResourceState.fromList(it)
         }
       }
+      188.toByte() -> {
+        return (readValue(buffer) as? List<Any?>)?.let {
+          AddonCollection.fromList(it)
+        }
+      }
       else -> super.readValueOfType(type, buffer)
     }
   }
@@ -2643,6 +2682,10 @@ private open class GeckoPigeonCodec : StandardMessageCodec() {
         stream.write(187)
         writeValue(stream, value.toList())
       }
+      is AddonCollection -> {
+        stream.write(188)
+        writeValue(stream, value.toList())
+      }
       else -> super.writeValue(stream, value)
     }
   }
@@ -2652,7 +2695,7 @@ private open class GeckoPigeonCodec : StandardMessageCodec() {
 /** Generated interface from Pigeon that represents a handler of messages from Flutter. */
 interface GeckoBrowserApi {
   fun getGeckoVersion(): String
-  fun initialize(logLevel: LogLevel, contentBlocking: ContentBlocking)
+  fun initialize(logLevel: LogLevel, contentBlocking: ContentBlocking, addonCollection: AddonCollection?)
   fun showNativeFragment(): Boolean
   fun onTrimMemory(level: Long)
 
@@ -2687,8 +2730,9 @@ interface GeckoBrowserApi {
             val args = message as List<Any?>
             val logLevelArg = args[0] as LogLevel
             val contentBlockingArg = args[1] as ContentBlocking
+            val addonCollectionArg = args[2] as AddonCollection?
             val wrapped: List<Any?> = try {
-              api.initialize(logLevelArg, contentBlockingArg)
+              api.initialize(logLevelArg, contentBlockingArg, addonCollectionArg)
               listOf(null)
             } catch (exception: Throwable) {
               GeckoPigeonUtils.wrapError(exception)

packages/flutter_mozilla_components/lib/flutter_mozilla_components.dart

@@ -31,6 +31,7 @@ export 'src/domain/services/gecko_tab_content.dart';
 export 'src/geckoview_widget.dart';
 export 'src/pigeons/gecko.g.dart'
     show
+        AddonCollection,
         AudioHitResult,
         BounceTrackingProtectionMode,
         ColorScheme,

packages/flutter_mozilla_components/lib/src/domain/services/gecko_browser.dart

@@ -17,8 +17,12 @@ class GeckoBrowserService {
     return _api.getGeckoVersion();
   }
 
-  Future<void> initialize(LogLevel logLevel, ContentBlocking contentBlocking) {
+  Future<void> initialize(
-    return _api.initialize(logLevel, contentBlocking);
+    LogLevel logLevel,
+    ContentBlocking contentBlocking,
+    AddonCollection? addonCollection,
+  ) {
+    return _api.initialize(logLevel, contentBlocking, addonCollection);
   }
 
   Future<bool> showNativeFragment() {

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

@@ -2664,6 +2664,57 @@ class ShareInternetResourceState {
 ;
 }
 
+class AddonCollection {
+  AddonCollection({
+    required this.serverURL,
+    required this.collectionUser,
+    required this.collectionName,
+  });
+
+  String serverURL;
+
+  String collectionUser;
+
+  String collectionName;
+
+  List<Object?> _toList() {
+    return <Object?>[
+      serverURL,
+      collectionUser,
+      collectionName,
+    ];
+  }
+
+  Object encode() {
+    return _toList();  }
+
+  static AddonCollection decode(Object result) {
+    result as List<Object?>;
+    return AddonCollection(
+      serverURL: result[0]! as String,
+      collectionUser: result[1]! as String,
+      collectionName: result[2]! as String,
+    );
+  }
+
+  @override
+  // ignore: avoid_equals_and_hash_code_on_mutable_classes
+  bool operator ==(Object other) {
+    if (other is! AddonCollection || other.runtimeType != runtimeType) {
+      return false;
+    }
+    if (identical(this, other)) {
+      return true;
+    }
+    return _deepEquals(encode(), other.encode());
+  }
+
+  @override
+  // ignore: avoid_equals_and_hash_code_on_mutable_classes
+  int get hashCode => Object.hashAll(_toList())
+;
+}
+
 
 class _PigeonCodec extends StandardMessageCodec {
   const _PigeonCodec();
@@ -2849,6 +2900,9 @@ class _PigeonCodec extends StandardMessageCodec {
     }    else if (value is ShareInternetResourceState) {
       buffer.putUint8(187);
       writeValue(buffer, value.encode());
+    }    else if (value is AddonCollection) {
+      buffer.putUint8(188);
+      writeValue(buffer, value.encode());
     } else {
       super.writeValue(buffer, value);
     }
@@ -2993,6 +3047,8 @@ class _PigeonCodec extends StandardMessageCodec {
         return DownloadState.decode(readValue(buffer)!);
       case 187: 
         return ShareInternetResourceState.decode(readValue(buffer)!);
+      case 188: 
+        return AddonCollection.decode(readValue(buffer)!);
       default:
         return super.readValueOfType(type, buffer);
     }
@@ -3040,14 +3096,14 @@ class GeckoBrowserApi {
     }
   }
 
-  Future<void> initialize(LogLevel logLevel, ContentBlocking contentBlocking) async {
+  Future<void> initialize(LogLevel logLevel, ContentBlocking contentBlocking, AddonCollection? addonCollection) async {
     final String pigeonVar_channelName = 'dev.flutter.pigeon.flutter_mozilla_components.GeckoBrowserApi.initialize$pigeonVar_messageChannelSuffix';
     final BasicMessageChannel<Object?> pigeonVar_channel = BasicMessageChannel<Object?>(
       pigeonVar_channelName,
       pigeonChannelCodec,
       binaryMessenger: pigeonVar_binaryMessenger,
     );
-    final Future<Object?> pigeonVar_sendFuture = pigeonVar_channel.send(<Object?>[logLevel, contentBlocking]);
+    final Future<Object?> pigeonVar_sendFuture = pigeonVar_channel.send(<Object?>[logLevel, contentBlocking, addonCollection]);
     final List<Object?>? pigeonVar_replyList =
         await pigeonVar_sendFuture as List<Object?>?;
     if (pigeonVar_replyList == null) {

packages/flutter_mozilla_components/pigeons/gecko.dart

@@ -827,6 +827,18 @@ class ShareInternetResourceState {
 
 enum LogLevel { debug, info, warn, error }
 
+class AddonCollection {
+  final String serverURL;
+  final String collectionUser;
+  final String collectionName;
+
+  AddonCollection({
+    required this.serverURL,
+    required this.collectionUser,
+    required this.collectionName,
+  });
+}
+
 @ConfigurePigeon(
   PigeonOptions(
     dartOut: 'lib/src/pigeons/gecko.g.dart',
@@ -842,7 +854,11 @@ enum LogLevel { debug, info, warn, error }
 @HostApi()
 abstract class GeckoBrowserApi {
   String getGeckoVersion();
-  void initialize(LogLevel logLevel, ContentBlocking contentBlocking);
+  void initialize(
+    LogLevel logLevel,
+    ContentBlocking contentBlocking,
+    AddonCollection? addonCollection,
+  );
   bool showNativeFragment();
   void onTrimMemory(int level);
 }