150 lines
6.7 KiB
Markdown
150 lines
6.7 KiB
Markdown
# Active Context: hosts
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## Current Work Focus
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**Phase 1 Complete - Foundation Established**: The hosts TUI application now has a fully functional foundation with comprehensive read-only functionality. The application successfully loads, parses, and displays hosts files in a modern two-pane TUI interface.
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## Recent Changes
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### Phase 1 Implementation Complete
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- ✅ **Fully functional TUI application**: Complete two-pane interface with entry list and details
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- ✅ **Robust hosts file parsing**: Handles comments, inactive entries, IPv4/IPv6 addresses
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- ✅ **Comprehensive testing**: 42 passing tests covering all core functionality
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- ✅ **Clean code quality**: All ruff linting checks passing
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- ✅ **Proper project structure**: Well-organized package structure in src/hosts/
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### Current Project State
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- **Working application**: `uv run hosts` launches fully functional TUI
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- **Complete dependencies**: textual, pytest, ruff properly configured
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- **Comprehensive test suite**: 42 tests with 100% pass rate
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- **Clean codebase**: All linting and formatting standards met
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- **Robust architecture**: Layered design with clear separation of concerns
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## Next Steps
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### Phase 2: Enhanced Read-Only Features (Current Priority)
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1. **Visual enhancements**:
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- Improve entry selection highlighting and visual feedback
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- Better status indicators for active/inactive entries
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- Enhanced color scheme and styling
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2. **Data manipulation features**:
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- Sort entries by IP address, hostname, or status
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- Filter entries by active/inactive status
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- Search functionality for hostnames and IP addresses
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3. **User experience improvements**:
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- Implement proper help modal dialog
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- Better keyboard shortcuts and navigation
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- Status bar enhancements with more detailed information
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4. **Performance and polish**:
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- Optimize for large hosts files
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- Improve error handling and user feedback
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- Add configuration options
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### Phase 3: Edit Mode Foundation (Next Major Phase)
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1. **Permission management**:
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- Implement sudo request and management system
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- Edit mode toggle with proper security handling
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- Permission validation and error handling
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2. **Basic editing operations**:
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- Toggle entries active/inactive
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- Reorder entries in the list
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- Edit IP addresses, hostnames, and comments
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- Add and delete entries
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3. **File safety**:
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- Automatic backup before modifications
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- Atomic file operations
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- Validation before writing changes
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## Active Decisions and Considerations
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### Architecture Decisions Validated
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- ✅ **Layered architecture**: Successfully implemented with clear separation
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- ✅ **Reactive UI**: Textual's reactive system working excellently
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- ✅ **Data models**: Dataclasses with validation proving robust
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- ✅ **File parsing**: Comprehensive parser handling all edge cases
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- ✅ **Permission model**: Read-only default working as intended
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### Design Patterns Implemented
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- ✅ **Reactive patterns**: Using Textual's reactive attributes effectively
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- ✅ **Data validation**: Comprehensive validation in models and parser
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- ✅ **Error handling**: Graceful degradation and user feedback
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- 🔄 **Command pattern**: Planned for Phase 3 edit operations
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- 🔄 **Observer pattern**: Will implement for state change notifications
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### Technical Constraints Confirmed
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- ✅ **Python 3.13+**: Excellent choice with modern features working well
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- ✅ **Unix-like systems**: Targeting Linux/macOS successfully
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- ✅ **File integrity**: Parser preserves comments and structure perfectly
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- 🔄 **Root access**: Will be implemented in Phase 3 edit mode
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## Important Patterns and Preferences
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### Code Organization
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- **Separation of concerns**: Clear layer boundaries
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- **Type safety**: Comprehensive type hints
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- **Documentation**: Docstrings for all public APIs
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- **Testing**: TDD approach with high coverage
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### User Experience Priorities
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- **Safety first**: Read-only by default, explicit edit mode
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- **Keyboard-driven**: Efficient navigation without mouse
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- **Visual clarity**: Clear active/inactive indicators
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- **Error prevention**: Validation before any file writes
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### Development Workflow
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- **uv for everything**: Package management and execution
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- **ruff for quality**: Linting and formatting
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- **pytest for testing**: Comprehensive test coverage
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- **Incremental development**: Build and test each component
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## Learnings and Project Insights
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### Key Insights from Implementation
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1. ✅ **Textual framework excellence**: Reactive system and widgets exceed expectations
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2. ✅ **File parsing complexity**: Real-world hosts files have many edge cases, all handled
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3. ✅ **Test-driven development**: Comprehensive testing caught numerous edge cases early
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4. ✅ **User experience focus**: Keyboard navigation and visual feedback crucial
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5. ✅ **Architecture validation**: Layered approach proving maintainable and extensible
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### Risk Areas Addressed
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- ✅ **File integrity**: Parser preserves all comments and formatting perfectly
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- ✅ **Input validation**: Comprehensive IP and hostname validation implemented
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- ✅ **Error handling**: Graceful degradation for file access and parsing errors
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- 🔄 **Permission escalation**: Will be carefully implemented in Phase 3
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- 🔄 **Large file performance**: To be tested and optimized in Phase 2
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### Success Factors Confirmed
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- ✅ **Safety-first approach**: Read-only default prevents accidental changes
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- ✅ **Comprehensive validation**: All data validated before processing
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- ✅ **Intuitive interface**: Users can navigate effectively with minimal learning
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- ✅ **Visual clarity**: Active/inactive states clearly distinguished
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- ✅ **Robust foundation**: Clean architecture supports future enhancements
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## Current Development Environment
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### Tools Working Perfectly
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- ✅ **uv**: Package manager handling all dependencies flawlessly
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- ✅ **ruff**: Code quality tool with all checks passing
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- ✅ **Python 3.13**: Runtime environment performing excellently
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- ✅ **textual**: TUI framework exceeding expectations
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- ✅ **pytest**: Testing framework with 42 passing tests
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### Development Workflow Established
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- ✅ **uv run hosts**: Launches application instantly
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- ✅ **uv run pytest**: Comprehensive test suite execution
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- ✅ **uv run ruff check**: Code quality validation
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- ✅ **uv run ruff format**: Automatic code formatting
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### Project Structure Complete
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- ✅ **Package structure**: Proper src/hosts/ organization implemented
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- ✅ **Core modules**: models.py and parser.py fully functional
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- ✅ **TUI implementation**: main.py with complete application
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- ✅ **Test coverage**: Comprehensive test suite for all components
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- ✅ **Entry point**: Configured hosts command working perfectly
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This active context represents the current state with Phase 1 complete and Phase 2 ready to begin.
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