TF-239 Delete single email permanently

lib/features/email/domain/repository/email_repository.dart

@@ -59,5 +59,7 @@ abstract class EmailRepository {
 
   Future<Email?> updateEmailDrafts(AccountId accountId, Email newEmail, EmailId oldEmailId);
 
-  Future<List<EmailId>> deleteMultipleEmailPermanently(Session session, AccountId accountId, List<EmailId> emailIds);
+  Future<List<EmailId>> deleteMultipleEmailsPermanently(Session session, AccountId accountId, List<EmailId> emailIds);
+
+  Future<bool> deleteEmailPermanently(AccountId accountId, EmailId emailId);
 }

lib/features/email/domain/state/delete_email_permanently_state.dart

@@ -0,0 +1,19 @@
+import 'package:core/core.dart';
+
+class DeleteEmailPermanentlySuccess extends UIState {
+
+  DeleteEmailPermanentlySuccess();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class DeleteEmailPermanentlyFailure extends FeatureFailure {
+
+  final exception;
+
+  DeleteEmailPermanentlyFailure(this.exception);
+
+  @override
+  List<Object?> get props => [exception];
+}

lib/features/email/domain/usecases/delete_email_permanently_interactor.dart

@@ -0,0 +1,25 @@
+import 'package:core/core.dart';
+import 'package:dartz/dartz.dart';
+import 'package:jmap_dart_client/jmap/account_id.dart';
+import 'package:jmap_dart_client/jmap/mail/email/email.dart';
+import 'package:tmail_ui_user/features/email/domain/repository/email_repository.dart';
+import 'package:tmail_ui_user/features/email/domain/state/delete_email_permanently_state.dart';
+
+class DeleteEmailPermanentlyInteractor {
+  final EmailRepository emailRepository;
+
+  DeleteEmailPermanentlyInteractor(this.emailRepository);
+
+  Stream<Either<Failure, Success>> execute(AccountId accountId, EmailId emailId) async* {
+    try {
+      final result = await emailRepository.deleteEmailPermanently(accountId, emailId);
+      if (result) {
+        yield Right<Failure, Success>(DeleteEmailPermanentlySuccess());
+      } else {
+        yield Left<Failure, Success>(DeleteEmailPermanentlyFailure(null));
+      }
+    } catch (e) {
+      yield Left<Failure, Success>(DeleteEmailPermanentlyFailure(e));
+    }
+  }
+}

lib/features/email/domain/usecases/delete_multiple_emails_permanently_interactor.dart

@@ -4,7 +4,7 @@ import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/core/session/session.dart';
 import 'package:jmap_dart_client/jmap/mail/email/email.dart';
 import 'package:tmail_ui_user/features/email/domain/repository/email_repository.dart';
-import 'package:tmail_ui_user/features/email/domain/state/delete_multiple_email_state.dart';
+import 'package:tmail_ui_user/features/email/domain/state/delete_multiple_emails_permanently_state.dart';
 
 class DeleteMultipleEmailsPermanentlyInteractor {
   final EmailRepository emailRepository;
@@ -13,7 +13,7 @@ class DeleteMultipleEmailsPermanentlyInteractor {
 
   Stream<Either<Failure, Success>> execute(Session session, AccountId accountId, List<EmailId> emailIds) async* {
     try {
-      final listResult = await emailRepository.deleteMultipleEmailPermanently(session, accountId, emailIds);
+      final listResult = await emailRepository.deleteMultipleEmailsPermanently(session, accountId, emailIds);
       if (listResult.length == emailIds.length) {
         yield Right<Failure, Success>(DeleteMultipleEmailsPermanentlyAllSuccess(listResult));
       } else if (listResult.isNotEmpty) {