TF-56 Implement upload single attachment

lib/features/composer/data/datasource_impl/composer_datasource_impl.dart

@@ -1,12 +1,26 @@
 import 'package:jmap_dart_client/jmap/mail/email/email_address.dart';
+import 'package:model/model.dart';
 import 'package:tmail_ui_user/features/composer/data/datasource/composer_datasource.dart';
+import 'package:tmail_ui_user/features/composer/data/network/composer_api.dart';
 
 class ComposerDataSourceImpl extends ComposerDataSource {
 
-  ComposerDataSourceImpl();
+  final ComposerAPI _composerAPI;
+
+  ComposerDataSourceImpl(this._composerAPI);
 
   @override
   Future<bool> saveEmailAddresses(List<EmailAddress> listEmailAddress) {
     throw UnimplementedError();
   }
+
+  @override
+  Future<Attachment> uploadAttachment(UploadRequest uploadRequest) {
+    return Future.sync(() async {
+      final uploadResponse = await _composerAPI.uploadAttachment(uploadRequest);
+      return uploadResponse.toAttachmentFile(uploadRequest.fileInfo.fileName);
+    }).catchError((error) {
+      throw error;
+    });
+  }
 }

lib/features/composer/data/datasource_impl/local_composer_datasource_impl.dart

@@ -1,4 +1,6 @@
 import 'package:jmap_dart_client/jmap/mail/email/email_address.dart';
+import 'package:model/model.dart';
+import 'package:model/upload/upload_request.dart';
 import 'package:tmail_ui_user/features/composer/data/datasource/composer_datasource.dart';
 import 'package:tmail_ui_user/features/composer/data/local/email_address_database_manager.dart';
 
@@ -16,4 +18,9 @@ class LocalComposerDataSourceImpl extends ComposerDataSource {
       throw error;
     });
   }
+
+  @override
+  Future<Attachment> uploadAttachment(UploadRequest uploadRequest) {
+    throw UnimplementedError();
+  }
 }