TF-527 Add domain layer in add new identity

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

@@ -0,0 +1,15 @@
+
+import 'package:equatable/equatable.dart';
+import 'package:jmap_dart_client/jmap/core/id.dart';
+import 'package:jmap_dart_client/jmap/identities/identity.dart';
+
+class CreateNewIdentityRequest with EquatableMixin {
+
+  final Identity newIdentity;
+  final Id creationId;
+
+  CreateNewIdentityRequest(this.creationId, this.newIdentity);
+
+  @override
+  List<Object?> get props => [creationId, newIdentity];
+}

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

@@ -1,9 +1,13 @@
 import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/identities/identity.dart';
+import 'package:tmail_ui_user/features/manage_account/domain/model/create_new_identity_request.dart';
+import 'package:jmap_dart_client/jmap/identities/identity.dart';
 import 'package:tmail_ui_user/features/manage_account/domain/model/identities_response.dart';
 
 abstract class ManageAccountRepository {
   Future<IdentitiesResponse> getAllIdentities(AccountId accountId);
 
+  Future<Identity> createNewIdentity(AccountId accountId, CreateNewIdentityRequest identityRequest);
+
   Future<bool> deleteIdentity(AccountId accountId, IdentityId identityId);
 }

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

@@ -0,0 +1,21 @@
+import 'package:core/core.dart';
+import 'package:jmap_dart_client/jmap/identities/identity.dart';
+
+class CreateNewIdentitySuccess extends UIState {
+
+  final Identity newIdentity;
+
+  CreateNewIdentitySuccess(this.newIdentity);
+
+  @override
+  List<Object?> get props => [newIdentity];
+}
+
+class CreateNewIdentityFailure extends FeatureFailure {
+  final dynamic exception;
+
+  CreateNewIdentityFailure(this.exception);
+
+  @override
+  List<Object> get props => [exception];
+}

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

@@ -0,0 +1,23 @@
+import 'dart:core';
+
+import 'package:core/core.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/create_new_identity_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/create_new_identity_state.dart';
+
+class CreateNewIdentityInteractor {
+  final ManageAccountRepository manageAccountRepository;
+
+  CreateNewIdentityInteractor(this.manageAccountRepository);
+
+  Stream<Either<Failure, Success>> execute(AccountId accountId, CreateNewIdentityRequest identityRequest) async* {
+    try {
+      final newIdentity = await manageAccountRepository.createNewIdentity(accountId, identityRequest);
+      yield Right(CreateNewIdentitySuccess(newIdentity));
+    } catch (exception) {
+      yield Left(CreateNewIdentityFailure(exception));
+    }
+  }
+}