image_core #

A robust and extensible Dart/Flutter package that simplifies image and file upload handling across platforms using SOLID principles and clean architecture. This package provides a foundation to manage file conversions, categorization, and streamlined upload/delete operations with support for multiple file types like XFile, File, and PlatformFile.

✨ Features #

• ✅ Platform-agnostic file support (XFile, File, PlatformFile)
• 📦 Convert file data to standardized UploadFile format
• 🧱 Enum-based file categorization (image, video, document, audio, other)
• 🧩 Extension-based conversion utilities
• 📄 MIME type detection and content type resolution
• 🧪 Functional error handling using Either<IFailure, TResult> from dartz
• 🔁 Optional toast notification messages on success

📦 Installation #

flutter pub add image_core

🧰 Getting Started #

🔄 Extensions #

XFile.toUploadFileFromXFile() #

Converts a XFile into a standardized UploadFile.

PlatformFile.toUploadFileFromPlatformFile() #

Converts a PlatformFile from file_picker to UploadFile.

file.toUploadFileFromFile() #

Converts a regular Dart File to an UploadFile.

String?.getFileName() #

Generates a fallback file name based on timestamp if null or empty.

String?.getFileExtension() #

Extracts the file extension from a filename or path.

📁 UploadFile Model #

class UploadFile {
  final Uint8List bytes;
  final String? name;
  final String? mimeType;
  final String? collectionPath;
  final String? uploadingToastTxt;
  final Map<String, String>? metadata;
  final String? contentDisposition;
  final FileCategory category;
  ...
}

📂 File Category #

The FileCategory enum includes:

• image
• video
• document
• audio
• other

Resolved based on MIME type via FileCategoryResolver.

🛠 Dependencies #

• dartz: Functional programming support (Either)
• exception_type: Common IFailure interface
• i_tdd: Toast or UI feedback handler with handleReport()
• cross_file, file_picker, mime: Platform and file type support

📄 License #

MIT License. See LICENSE file for details.

📣 Contributions #

Feel free to open issues, suggest features, or submit PRs. Contributions are welcome!

🔗 Related Packages #

• firebase_storage_manager
• file_picker
• fluttertoast
• image_picker

🔍 Example Use Case #

You want to upload an image picked via image_picker:

final XFile? file = await ImagePicker().pickImage(source: ImageSource.gallery);

final UploadFile uploadFile = await file.toUploadFileFromXFile(
  collectionPath: 'profiles/$id/images',
);

👨‍💼 Author #

image_core Developed with ❤️ by Shohidul Islam