TW-1760: Define state for upload manager

lib/utils/manager/upload_manager/upload_state.dart

@@ -0,0 +1,87 @@
+import 'package:fluffychat/app_state/failure.dart';
+import 'package:fluffychat/app_state/success.dart';
+import 'package:matrix/matrix.dart';
+
+class UploadFileInitial extends Success {
+  const UploadFileInitial();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class ConvertStreamToBytesState extends Success {
+  const ConvertStreamToBytesState();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class GeneratingThumbnailState extends Success {
+  const GeneratingThumbnailState();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class GenerateThumbnailFailed extends Failure {
+  const GenerateThumbnailFailed();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class EncryptingFileState extends Success {
+  const EncryptingFileState();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class EncryptedFileState extends Success {
+  const EncryptedFileState();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class EncryptFailedFileState extends Failure {
+  const EncryptFailedFileState();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class UploadingFileState extends Success {
+  final int receive;
+  final int total;
+
+  const UploadingFileState({
+    required this.receive,
+    required this.total,
+  });
+
+  @override
+  List<Object?> get props => [receive, total];
+}
+
+class UploadMatrixFileSuccessState extends Success {
+  final MatrixFile file;
+
+  const UploadMatrixFileSuccessState({
+    required this.file,
+  });
+
+  @override
+  List<Object?> get props => [file];
+}
+
+class UploadMatrixFileFailedState extends Failure {
+  final dynamic exception;
+
+  const UploadMatrixFileFailedState({
+    required this.exception,
+  });
+
+  @override
+  List<Object?> get props => [exception];
+}