ScalaFuncRefactor

ScalaFuncRefactor is a Visual Studio Code extension designed to assist developers in converting object-oriented Scala code into a more functional programming style. It leverages a Scala-based static analysis backend and provides refactoring suggestions directly in the IDE.

✨ Features

🚀 Real-time Refactoring (NEW!)

Live Suggestions: Get refactoring suggestions as you type (1.5s debounce)
Minimal Impact: Only processes changed content, uses intelligent caching
Performance Optimized: Incremental processing with timeout protection
Smart Detection: Automatically detects significant changes vs minor edits

🎯 Enhanced UI (NEW!)

Modern Interface: Beautiful, responsive sidebar with statistics
Quick Actions: Accept/reject individual suggestions or apply all at once
Inline Suggestions: VS Code native inline completion support
Quick Fixes: Ctrl+. for instant refactoring options

🔧 Core Features

Detects 25+ Scala refactoring patterns (loops, conditionals, collections)
Highlights suggestions with gutter icons and hover messages
Automatic transformations with undo support
Parallel processing using .par for large collections
Intelligent caching to avoid reprocessing unchanged code
UI Panels:
- Enhanced Refactor Panel: Modern UI with statistics and quick actions
- Chat Panel: (Experimental) for interactive feedback or guidance
Integrates with a Scala backend for static code analysis
Commands available from Command Palette for quick access

🧩 Commands

Real-time Commands (NEW!)

Command	Description
`Pause Real-time Refactoring`	Temporarily disable real-time suggestions
`Resume Real-time Refactoring`	Re-enable real-time suggestions
`Apply All Suggestions`	Apply all current suggestions at once
`Show Current Suggestions`	Display count of current suggestions

Core Commands

Command	Description
`Func Refactor`	Run the refactoring logic manually
`Add UI`	Launch the enhanced UI panel
`Remove Suggestions`	Clear the currently shown suggestions
`Start Chat`	Launch chat panel
`Open Sidebar`	Open the sidebar activity panel

🚀 Getting Started

1. Install Extension

You can install it manually:

code --install-extension scala-func-refactor-0.0.1.vsix

Or install it from the Visual Studio Marketplace

2. Automatic Real-time Suggestions

The extension now works automatically! Just start typing Scala code and you'll see:

⚡ Gutter icons on lines with refactoring opportunities
Hover messages with detailed suggestions
Inline completion suggestions as you type
Quick fixes available with Ctrl+.

3. Using the Enhanced UI

Open the Enhanced Refactor Panel from the sidebar
View real-time statistics of suggestions
Accept/reject individual suggestions or apply all at once
Use the modern interface for better productivity

2. Project Structure

.
├── extension.js           # Main extension activation file
├── media/                 # Icons for sidebar views
│   ├── chat.png
│   └── refactor.jpg
├── test/                  # Test files
├── package.json           # Extension manifest
└── README.md              # This file

🛠 Development

Clone the repo
Run in VS Code using F5 (Extension Development Host)
Update extension.js to connect to your Scala backend via a process or HTTP
Rebuild .vsix for distribution:

vsce package

📌 Requirements

Node.js ≥ 18
Scala backend running locally (e.g., via sbt or standalone jar)
VS Code ≥ 1.77

💡 Future Development

These are planned enhancements:

[ ] Refactoring preview with inline code actions
[ ] Integration with Scala Language Server (LSP) for seamless AST access
[ ] Automatic transformations with undo support
[ ] UI improvements to support categorized suggestions (loops, conditionals, collections, etc.)
[ ] Background task runner for continuous linting
[ ] Chat-like explanation of suggestions (LLM-backed)
[ ] Custom Rules for Refactoring

🧑‍💻 Author

Shiv Kiran Bagathi GitHub: @Shiv-Kiran VS Code Publisher: shivK

📃 License

MIT License — Feel free to fork, improve, and contribute!