TF-82 Edit a email draft

lib/features/composer/domain/model/email_request.dart

@@ -9,8 +9,9 @@ class EmailRequest with EquatableMixin {
   final Email email;
   final Id submissionCreateId;
   final MailboxId? mailboxIdSaved;
+  final EmailId? emailIdDestroyed;
 
-  EmailRequest(this.email, this.submissionCreateId, {this.mailboxIdSaved});
+  EmailRequest(this.email, this.submissionCreateId, {this.mailboxIdSaved, this.emailIdDestroyed});
 
   @override
   List<Object?> get props => [email, submissionCreateId, mailboxIdSaved];

lib/features/composer/domain/state/update_email_drafts_state.dart

@@ -0,0 +1,21 @@
+import 'package:core/core.dart';
+import 'package:jmap_dart_client/jmap/mail/email/email.dart';
+
+class UpdateEmailDraftsSuccess extends UIState {
+
+  final Email emailAsDrafts;
+
+  UpdateEmailDraftsSuccess(this.emailAsDrafts);
+
+  @override
+  List<Object?> get props => [];
+}
+
+class UpdateEmailDraftsFailure extends FeatureFailure {
+  final exception;
+
+  UpdateEmailDraftsFailure(this.exception);
+
+  @override
+  List<Object> get props => [exception];
+}

lib/features/composer/domain/usecases/update_email_drafts_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/composer/domain/state/update_email_drafts_state.dart';
+import 'package:tmail_ui_user/features/email/domain/repository/email_repository.dart';
+
+class UpdateEmailDraftsInteractor {
+  final EmailRepository emailRepository;
+
+  UpdateEmailDraftsInteractor(this.emailRepository);
+
+  Stream<Either<Failure, Success>> execute(AccountId accountId, Email newEmail, EmailId oldEmailId) async* {
+    try {
+      final newEmailDrafts = await emailRepository.updateEmailDrafts(accountId, newEmail, oldEmailId);
+      if (newEmailDrafts != null) {
+        yield Right<Failure, Success>(UpdateEmailDraftsSuccess(newEmailDrafts));
+      } else {
+        yield Left<Failure, Success>(UpdateEmailDraftsFailure(null));
+      }
+    } catch (e) {
+      yield Left<Failure, Success>(UpdateEmailDraftsFailure(e));
+    }
+  }
+}