# Chess Teaching Assistant Detailed Implementation Plan

## Week 1: Project Setup
1. Create Xcode project
   - Set up SwiftUI project structure
   - Configure project settings for MacOS Silicon
   - Add basic app lifecycle handlers
2. Set up development environment
   - Install required dependencies (Metal, Vision)
   - Configure build settings
   - Set up version control
3. Establish project architecture
   - Create core module structure
   - Implement basic MVVM pattern
   - Set up dependency injection
4. Implement permission handlers
   - Add screen recording permission request
   - Implement accessibility permissions
   - Add privacy descriptions in Info.plist

## Week 2-3: Screenshot Module
1. Screen recording permissions
   - Implement permission request flow
   - Handle permission denied scenarios
   - Add permission status monitoring
2. Screenshot capture service
   - Implement ScreenCapture API integration
   - Add screenshot quality settings
   - Implement error handling
3. Keyboard shortcut system
   - Add global keyboard event monitoring
   - Implement custom shortcut configuration
   - Handle shortcut conflicts
4. Firefox window detection
   - Implement window detection logic
   - Add browser window filtering
   - Handle multiple window scenarios
5. Multi-monitor support
   - Implement monitor detection
   - Add monitor selection UI
   - Test across different monitor setups

## Week 3-4: Board Recognition System
1. Vision framework integration
   - Set up Vision pipeline
   - Implement image analysis
   - Add error handling
2. ML model for piece recognition
   - Create training dataset
   - Train initial model
   - Implement model inference
3. Chess.com theme handling
   - Collect theme samples
   - Add theme detection
   - Implement theme-specific recognition
4. FEN conversion logic
   - Implement FEN generation
   - Add position validation
   - Handle edge cases
5. Position validation system
   - Add board state validation
   - Implement error correction
   - Add validation feedback

## Week 5-6: Stockfish Integration
1. Stockfish ARM64 setup
   - Integrate Stockfish binary
   - Configure engine settings
   - Test basic functionality
2. Async engine wrapper
   - Implement async interface
   - Add move analysis queue
   - Handle engine timeouts
3. Position analysis pipeline
   - Implement analysis request system
   - Add result processing
   - Handle analysis errors
4. Move suggestion system
   - Implement best move detection
   - Add alternative move suggestions
   - Handle engine evaluations
5. Evaluation cache
   - Implement position caching
   - Add cache invalidation
   - Optimize cache performance

## Week 7-8: Visual Overlay Foundation
1. Metal rendering pipeline
   - Set up Metal framework
   - Implement basic rendering
   - Add shader support
2. Transparent window system
   - Create transparent NSWindow
   - Implement window positioning
   - Add window management
3. Basic shape rendering
   - Implement shape drawing
   - Add color customization
   - Handle shape transformations
4. Coordinate transformation
   - Implement screen to board mapping
   - Add coordinate system conversion
   - Handle window resizing
5. Overlay performance testing
   - Implement performance metrics
   - Add optimization hooks
   - Test on different hardware

## Week 9-10: Move Visualization
1. Arrow rendering system
   - Implement arrow drawing
   - Add arrow customization
   - Handle arrow animations
2. Square highlighting
   - Implement square coloring
   - Add highlight types
   - Handle multiple highlights
3. Attack pattern visualization
   - Implement attack detection
   - Add visual indicators
   - Handle complex patterns
4. Defensive move indicators
   - Implement defense detection
   - Add visual feedback
   - Handle multiple defenses
5. Threat visualization system
   - Implement threat detection
   - Add threat indicators
   - Handle complex threats

## Week 11: Performance Optimization
1. Metal shaders
   - Implement custom shaders
   - Optimize rendering
   - Add shader debugging
2. Rendering pipeline
   - Optimize draw calls
   - Implement batching
   - Add performance monitoring
3. Caching mechanisms
   - Implement position cache
   - Add analysis cache
   - Optimize cache usage
4. Analysis pipeline
   - Optimize engine calls
   - Add parallel processing
   - Handle resource contention
5. System benchmarking
   - Implement performance tests
   - Add metrics collection
   - Analyze optimization results

## Week 12: Testing & Refinement
1. Automated test suite
   - Add unit tests
   - Implement integration tests
   - Add UI tests
2. Performance tests
   - Implement benchmark tests
   - Add stress tests
   - Monitor resource usage
3. Security audit
   - Review code security
   - Implement security fixes
   - Add security monitoring
4. Bug fixes
   - Implement bug tracking
   - Add crash reporting
   - Fix reported issues
5. Optimizations
   - Analyze performance
   - Implement optimizations
   - Verify improvements

## Week 13: Polish & Distribution
1. UI/UX refinement
   - Implement design improvements
   - Add animations
   - Improve user feedback
2. User settings
   - Implement settings UI
   - Add customization options
   - Handle settings persistence
3. Analytics
   - Implement analytics system
   - Add event tracking
   - Handle privacy concerns
4. Documentation
   - Create user documentation
   - Add developer docs
   - Implement in-app help
5. TestFlight preparation
   - Set up TestFlight
   - Prepare build artifacts
   - Configure distribution

## Week 14: Launch Preparation
1. Final security review
   - Conduct security audit
   - Implement final fixes
   - Verify security measures
2. Performance validation
   - Conduct final benchmarks
   - Verify optimizations
   - Ensure smooth operation
3. Documentation completion
   - Finalize user docs
   - Complete developer docs
   - Verify documentation
4. TestFlight distribution
   - Prepare final build
   - Distribute to testers
   - Collect feedback
5. User feedback setup
   - Implement feedback system
   - Add bug reporting
   - Set up support channels

Key Milestones:
✓ Week 1: Working project structure
✓ Week 4: Functional board recognition
✓ Week 6: Working Stockfish analysis
✓ Week 8: Basic visual overlay system
✓ Week 10: Complete visualization system
✓ Week 12: Optimized performance
✓ Week 14: Ready for distribution

Testing Checkpoints:
- After each module completion
- Weekly performance benchmarks
- Bi-weekly security reviews
- Regular UX testing sessions

Development Priorities:
1. Core functionality
2. Performance optimization
3. User experience
4. Security compliance
5. Polish and refinement