TF-3454 Download all attachments as ZIP

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

@@ -0,0 +1,51 @@
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:model/download/download_task_id.dart';
+import 'package:model/email/attachment.dart';
+
+class StartDownloadAllAttachmentsForWeb extends UIState {
+  StartDownloadAllAttachmentsForWeb(this.taskId, this.attachment);
+
+  final DownloadTaskId taskId;
+  final Attachment attachment;
+
+  @override
+  List<Object> get props => [taskId, attachment];
+}
+
+class DownloadingAllAttachmentsForWeb extends LoadingState {
+  DownloadingAllAttachmentsForWeb(
+    this.taskId,
+    this.fileName,
+    this.progress,
+    this.downloaded,
+    this.total,
+  );
+
+  final DownloadTaskId taskId;
+  final String fileName;
+  final double progress;
+  final int downloaded;
+  final int total;
+
+  @override
+  List<Object?> get props => [taskId, fileName, progress, downloaded, total];
+}
+
+class DownloadAllAttachmentsForWebSuccess extends UIState {
+  DownloadAllAttachmentsForWebSuccess({required this.taskId});
+
+  final DownloadTaskId taskId;
+
+  @override
+  List<Object> get props => [taskId];
+}
+
+class DownloadAllAttachmentsForWebFailure extends FeatureFailure {
+  DownloadAllAttachmentsForWebFailure({super.exception, required this.taskId});
+
+  final DownloadTaskId taskId;
+
+  @override
+  List<Object> get props => [exception, taskId];
+}

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

@@ -0,0 +1,18 @@
+import 'package:core/data/network/download/downloaded_response.dart';
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+
+class ExportingAllAttachments extends LoadingState {}
+
+class ExportAllAttachmentsSuccess extends UIState {
+  ExportAllAttachmentsSuccess(this.downloadedResponse);
+
+  final DownloadedResponse downloadedResponse;
+
+  @override
+  List<Object> get props => [downloadedResponse];
+}
+
+class ExportAllAttachmentsFailure extends FeatureFailure {
+  ExportAllAttachmentsFailure({super.exception});
+}