changed image upload screen from mobile upload screen

lib/core/widgets/image_upload/blocs/image_upload_cubit.dart

@@ -0,0 +1,60 @@
+import 'package:equatable/equatable.dart';
+import 'package:file_picker/file_picker.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:image_picker/image_picker.dart';
+
+part 'image_upload_state.dart';
+
+class ImageUploadCubit extends Cubit<ImageUploadState> {
+  ImageUploadCubit() : super(const ImageUploadState());
+
+  void setStatus(ImageUploadStatus status) {
+    emit(state.copyWith(status: status));
+  }
+
+  void setError(String? message) {
+    emit(
+      state.copyWith(status: ImageUploadStatus.failure, errorMessage: message),
+    );
+  }
+
+  void addFiles(List<PlatformFile> files) {
+    List<PlatformFile> newFiles = List.from(state.stagedFiles);
+    newFiles.addAll(files);
+    emit(
+      state.copyWith(status: ImageUploadStatus.success, stagedFiles: newFiles),
+    );
+  }
+
+  void removeFile(PlatformFile file) {
+    List<PlatformFile> newFiles = List.from(state.stagedFiles);
+    newFiles.remove(file);
+    emit(
+      state.copyWith(status: ImageUploadStatus.success, stagedFiles: newFiles),
+    );
+  }
+
+  Future<void> addPhoto(XFile photo) async {
+    final List<PlatformFile> files = List.from(state.stagedFiles);
+    files.add(PlatformFile(name: photo.name, size: 0));
+    emit(
+      state.copyWith(
+        status: ImageUploadStatus.addingPicture,
+        stagedFiles: files,
+      ),
+    );
+    final List<PlatformFile> newFiles = List.from(files);
+    newFiles.removeLast();
+    final PlatformFile loadedFile = PlatformFile(
+      name: photo.name,
+      size: await photo.length(),
+      bytes: await photo.readAsBytes(),
+      path: photo.path,
+    );
+    newFiles.add(loadedFile);
+
+    emit(
+      state.copyWith(status: ImageUploadStatus.success, stagedFiles: newFiles),
+    );
+  }
+}

lib/core/widgets/image_upload/blocs/image_upload_state.dart

@@ -0,0 +1,29 @@
+part of 'image_upload_cubit.dart';
+
+enum ImageUploadStatus { initial, addingPicture, uploading, success, failure }
+
+class ImageUploadState extends Equatable {
+  final ImageUploadStatus status;
+  final String? errorMessage;
+  final List<PlatformFile> stagedFiles;
+
+  const ImageUploadState({
+    this.status = ImageUploadStatus.initial,
+    this.errorMessage,
+    this.stagedFiles = const [],
+  });
+  ImageUploadState copyWith({
+    ImageUploadStatus? status,
+    String? errorMessage,
+    List<PlatformFile>? stagedFiles,
+  }) {
+    return ImageUploadState(
+      status: status ?? this.status,
+      errorMessage: errorMessage,
+      stagedFiles: stagedFiles ?? this.stagedFiles,
+    );
+  }
+
+  @override
+  List<Object?> get props => [status, errorMessage, stagedFiles];
+}