added support for custom addon collections

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 = {