TF-831: implement Add a new recipient in forwarding

lib/features/manage_account/domain/model/add_recipients_in_forwarding_request.dart

@@ -0,0 +1,23 @@
+import 'package:equatable/equatable.dart';
+import 'package:forward/forward/tmail_forward.dart';
+
+class AddRecipientInForwardingRequest with EquatableMixin {
+  final TMailForward currentForward;
+  final Set<String> listRecipientAdded;
+
+  AddRecipientInForwardingRequest({
+    required this.currentForward,
+    required this.listRecipientAdded,
+  });
+
+  TMailForward get newTMailForward {
+    final newListRecipients = currentForward.forwards
+        .where((recipient) => !listRecipientAdded.contains(recipient))
+        .toSet();
+    newListRecipients.addAll(listRecipientAdded);
+    return currentForward.copyWith(forwards: newListRecipients);
+  }
+
+  @override
+  List<Object?> get props => [currentForward, listRecipientAdded];
+}

lib/features/manage_account/domain/repository/manage_account_repository.dart

@@ -6,6 +6,7 @@ import 'package:jmap_dart_client/jmap/core/properties/properties.dart';
 import 'package:jmap_dart_client/jmap/identities/identity.dart';
 import 'package:jmap_dart_client/jmap/mail/vacation/vacation_response.dart';
 import 'package:rule_filter/rule_filter/tmail_rule.dart';
+import 'package:tmail_ui_user/features/manage_account/domain/model/add_recipients_in_forwarding_request.dart';
 import 'package:tmail_ui_user/features/manage_account/domain/model/create_new_identity_request.dart';
 import 'package:tmail_ui_user/features/manage_account/domain/model/delete_email_rule_request.dart';
 import 'package:tmail_ui_user/features/manage_account/domain/model/create_new_email_rule_filter_request.dart';
@@ -40,4 +41,6 @@ abstract class ManageAccountRepository {
   Future<List<VacationResponse>> updateVacation(AccountId accountId, VacationResponse vacationResponse);
 
   Future<TMailForward> deleteRecipientInForwarding(AccountId accountId, DeleteRecipientInForwardingRequest deleteRequest);
+
+  Future<TMailForward> addRecipientsInForwarding(AccountId accountId, AddRecipientInForwardingRequest addRequest);
 }

lib/features/manage_account/domain/state/add_recipient_in_forwarding_state.dart

@@ -0,0 +1,21 @@
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:forward/forward/tmail_forward.dart';
+
+class AddRecipientsInForwardingSuccess extends UIState {
+  final TMailForward forward;
+
+  AddRecipientsInForwardingSuccess(this.forward);
+
+  @override
+  List<Object?> get props => [forward];
+}
+
+class AddRecipientsInForwardingFailure extends FeatureFailure {
+  final dynamic exception;
+
+  AddRecipientsInForwardingFailure(this.exception);
+
+  @override
+  List<Object> get props => [exception];
+}

lib/features/manage_account/domain/usecases/add_recipients_in_forwarding_interactor.dart

@@ -0,0 +1,28 @@
+import 'dart:core';
+
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:dartz/dartz.dart';
+import 'package:jmap_dart_client/jmap/account_id.dart';
+import 'package:tmail_ui_user/features/manage_account/domain/model/add_recipients_in_forwarding_request.dart';
+import 'package:tmail_ui_user/features/manage_account/domain/repository/manage_account_repository.dart';
+import 'package:tmail_ui_user/features/manage_account/domain/state/add_recipient_in_forwarding_state.dart';
+
+class AddRecipientsInForwardingInteractor {
+  final ManageAccountRepository manageAccountRepository;
+
+  AddRecipientsInForwardingInteractor(this.manageAccountRepository);
+
+  Stream<Either<Failure, Success>> execute(
+    AccountId accountId,
+    AddRecipientInForwardingRequest addRequest,
+  ) async* {
+    try {
+      yield Right<Failure, Success>(LoadingState());
+      final result = await manageAccountRepository.addRecipientsInForwarding(accountId, addRequest);
+      yield Right<Failure, Success>(AddRecipientsInForwardingSuccess(result));
+    } catch (exception) {
+      yield Left<Failure, Success>(AddRecipientsInForwardingFailure(exception));
+    }
+  }
+}