# Changelog

All notable changes to the Codeflash extension will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [0.2.0] - 2024-01-XX

### 🆕 Added

- **Enhanced Inline Suggestions**: CodeRabbit-style inline optimization hints with severity indicators
- **Comprehensive Error Handling**: Detailed error categorization with actionable troubleshooting steps
- **Async Callbacks**: Non-blocking analysis with progress tracking and chunked processing
- **Background Processing**: Queue-based background refresh for continuous analysis improvement
- **Smart Caching**: Intelligent cache management with automatic invalidation
- **Detailed Progress Tracking**: Step-by-step visualization in sidebar with real-time updates
- **Enhanced CodeLens Provider**:
  - Issue detection with severity classification (⚠️ warnings, 💡 suggestions, ⚡ optimizations)
  - Detailed tooltips with specific improvement recommendations
  - "View Details" panel with comprehensive analysis
- **Robust LSP Integration**:
  - Connection timeout handling (30s)
  - Automatic retry mechanisms
  - Connection state monitoring
- **User Experience Improvements**:
  - Welcome notifications with quick actions
  - Categorized error messages with specific guidance
  - One-click troubleshooting actions
  - Automatic log access

### 🔄 Changed

- **Activation Process**: Multi-step validation with clear progress indicators
- **Error Reporting**: Categorized errors (Python Environment, Language Server, Startup Timeout)
- **Performance**: Chunked processing prevents UI blocking on large files
- **CodeLens Display**: Enhanced with issue counts and improvement suggestions
- **Sidebar UX**: Real-time progress with step completion animations

### 🐛 Fixed

- **Silent Failures**: Extension now properly reports all LSP server connection issues
- **Startup Reliability**: Better Python environment detection and validation
- **Connection Handling**: Improved LSP client state management
- **Memory Leaks**: Proper cleanup in CodeLens provider disposal
- **UI Blocking**: Async processing prevents freeze on large codebases

### 🔧 Technical Improvements

- **Architecture**:
  - Separation of sync/async analysis methods
  - Background queue processing
  - Enhanced service lifecycle management
- **Error Recovery**:
  - Automatic reconnection attempts
  - Graceful degradation when LSP unavailable
  - User-friendly recovery actions
- **Performance Optimization**:
  - Concurrent function analysis
  - Smart cache invalidation
  - Reduced redundant processing

## [0.1.0] - 2024-01-XX

### 🆕 Added

- **Initial Release**: Basic Python code optimization functionality
- **LSP Integration**: Codeflash Language Server for Python analysis
- **Sidebar Provider**: Function list with optimization capabilities
- **CodeLens Provider**: Basic inline optimization suggestions
- **Optimization Service**: Two-step optimization process with test discovery
- **Diff Service**: Side-by-side comparison of original vs optimized code
- **Core Features**:
  - Function-level optimization
  - Test discovery and generation
  - Diff visualization
  - Basic progress indicators

### 📋 System Requirements

- VS Code 1.98.0+
- Python 3.8+
- Node.js 16+ (for development)

---

## Future Versions

### [0.3.0] - Planned

- **AI-Powered Analysis**: Integration with code analysis AI models
- **Performance Metrics**: Before/after performance comparisons
- **Custom Rules**: User-defined optimization patterns
- **Batch Operations**: Multi-file optimization support
- **Enhanced UI**: Improved progress visualization and result presentation

### [0.4.0] - Planned

- **Language Expansion**: TypeScript and JavaScript support
- **Team Features**: Shared optimization rules and collaborative workflows
- **CI/CD Integration**: Automated optimization in build pipelines
- **Advanced Metrics**: Detailed performance insights and trends

### [1.0.0] - Vision

- **ML-Driven Optimization**: Learn from codebase patterns
- **Cloud Processing**: Scalable analysis for enterprise projects
- **Advanced Collaboration**: Team optimization workflows and reporting
- **Professional Features**: Enterprise-grade performance and security

---

## Migration Guide

### From 0.1.x to 0.2.x

- **No Breaking Changes**: All existing functionality preserved
- **Enhanced Experience**: Automatic upgrade with improved error handling
- **New Features**: Async callbacks and background processing work automatically
- **Settings**: All previous settings remain compatible

### Troubleshooting Upgrades

If you experience issues after upgrading:

1. **Reload Window**: `Ctrl+Shift+P > Developer: Reload Window`
2. **Check Python**: Ensure Python 3.8+ is in PATH
3. **Clear Cache**: Restart VS Code completely
4. **Review Logs**: Check `View > Output > Codeflash` for details

---

## Support

- **Issues**: [GitHub Issues](https://github.com/your-repo/codeflash/issues)
- **Discussions**: [GitHub Discussions](https://github.com/your-repo/codeflash/discussions)
- **Documentation**: [Wiki](https://github.com/your-repo/codeflash/wiki)
- **Email**: support@codeflash.dev
