TF-56 Implement upload single attachment

lib/features/composer/domain/repository/composer_repository.dart

@@ -1,5 +1,8 @@
 import 'package:jmap_dart_client/jmap/mail/email/email_address.dart';
+import 'package:model/model.dart';
 
 abstract class ComposerRepository {
   Future<bool> saveEmailAddresses(List<EmailAddress> listEmailAddress);
+
+  Future<Attachment> uploadAttachment(UploadRequest uploadRequest);
 }

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

@@ -0,0 +1,27 @@
+import 'package:core/core.dart';
+import 'package:model/model.dart';
+
+class UploadAttachmentLoadingState extends UIState {
+  UploadAttachmentLoadingState();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class UploadAttachmentSuccess extends UIState {
+  final Attachment attachment;
+
+  UploadAttachmentSuccess(this.attachment);
+
+  @override
+  List<Object?> get props => [attachment];
+}
+
+class UploadAttachmentFailure extends FeatureFailure {
+  final exception;
+
+  UploadAttachmentFailure(this.exception);
+
+  @override
+  List<Object> get props => [exception];
+}

lib/features/composer/domain/usecases/upload_attachment_interactor.dart

@@ -0,0 +1,30 @@
+import 'package:core/core.dart';
+import 'package:dartz/dartz.dart';
+import 'package:jmap_dart_client/jmap/account_id.dart';
+import 'package:model/model.dart';
+import 'package:tmail_ui_user/features/composer/domain/repository/composer_repository.dart';
+import 'package:tmail_ui_user/features/composer/domain/state/upload_attachment_state.dart';
+import 'package:tmail_ui_user/features/login/domain/repository/credential_repository.dart';
+
+class UploadAttachmentInteractor {
+  final ComposerRepository _composerRepository;
+  final CredentialRepository _credentialRepository;
+
+  UploadAttachmentInteractor(this._composerRepository, this._credentialRepository);
+
+  Stream<Either<Failure, Success>> execute(FileInfo fileInfo, AccountId accountId, Uri uploadUrl) async* {
+    try {
+      yield Right<Failure, Success>(UploadAttachmentLoadingState());
+      final result = await Future.wait(
+          [_credentialRepository.getUserName(), _credentialRepository.getPassword()],
+          eagerError: true
+      ).then((List responses) async {
+        final accountRequest = AccountRequest(responses.first, responses.last);
+        return await _composerRepository.uploadAttachment(UploadRequest(uploadUrl, accountId, fileInfo, accountRequest));
+      });
+      yield Right<Failure, Success>(UploadAttachmentSuccess(result));
+    } catch (e) {
+      yield Left<Failure, Success>(UploadAttachmentFailure(e));
+    }
+  }
+}