Add unit tests for HostEntry and HostsFile models, and implement HostsParser tests
- Created comprehensive unit tests for HostEntry class, covering creation, validation, and conversion to/from hosts file lines. - Developed unit tests for HostsFile class, including entry management, sorting, and retrieval of active/inactive entries. - Implemented tests for HostsParser class, validating parsing and serialization of hosts files, handling comments, and file operations. - Ensured coverage for edge cases such as empty files, invalid entries, and file permission checks.
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## What Works
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### Project Foundation
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### Project Foundation ✅ COMPLETE
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- ✅ **uv project initialized**: Basic Python 3.13 project with uv configuration
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- ✅ **Code quality setup**: ruff configured for linting and formatting
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- ✅ **Memory bank complete**: All core documentation files created and populated
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- ✅ **Architecture defined**: Clear layered architecture and design patterns established
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### Phase 1: Foundation ✅ COMPLETE
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- ✅ **Project structure**: Created proper `src/hosts/` package structure with core and tui modules
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- ✅ **Dependencies**: Added textual, pytest, ruff and configured properly in pyproject.toml
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- ✅ **Entry point**: Configured proper application entry point (`hosts` command)
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- ✅ **Core models**: Implemented HostEntry and HostsFile data classes with full validation
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- ✅ **Hosts parser**: Created comprehensive parser for reading/writing `/etc/hosts` files
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- ✅ **Basic TUI**: Implemented main application with two-pane layout
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- ✅ **File loading**: Successfully reads and parses existing hosts file
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- ✅ **Entry display**: Shows hosts entries in left pane with proper formatting
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- ✅ **Detail view**: Shows selected entry details in right pane
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- ✅ **Navigation**: Keyboard navigation between entries working
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- ✅ **Testing**: Comprehensive test suite with 42 passing tests
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- ✅ **Code quality**: All linting checks passing
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### Documentation
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- ✅ **Project brief**: Comprehensive project definition and requirements
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- ✅ **Product context**: User experience goals and problem definition
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## What's Left to Build
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### Phase 1: Foundation (Immediate)
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- ❌ **Project structure**: Create proper `src/hosts/` package structure
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- ❌ **Dependencies**: Add textual, pytest, and other required packages
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- ❌ **Entry point**: Configure proper application entry point in pyproject.toml
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- ❌ **Core models**: Implement HostEntry and HostsFile data classes
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- ❌ **Hosts parser**: Create parser for reading/writing `/etc/hosts` files
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### Phase 2: Core Functionality
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- ❌ **Basic TUI**: Implement main application with two-pane layout
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- ❌ **File loading**: Read and parse existing hosts file
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- ❌ **Entry display**: Show hosts entries in left pane
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- ❌ **Detail view**: Show selected entry details in right pane
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- ❌ **Navigation**: Keyboard navigation between entries
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### Phase 3: Read-Only Features
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- ❌ **Entry selection**: Highlight and select entries
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### Phase 2: Enhanced Read-Only Features (Next)
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- ❌ **Entry selection highlighting**: Visual feedback for selected entries
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- ❌ **Sorting**: Sort entries by IP, hostname, or comments
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- ❌ **Filtering**: Filter entries by active/inactive status
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- ❌ **Search**: Find entries by hostname or IP
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- ❌ **Help screen**: Proper modal help dialog
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- ❌ **Status indicators**: Better visual distinction for active/inactive entries
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### Phase 4: Edit Mode
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### Phase 3: Edit Mode Foundation
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- ❌ **Permission management**: Sudo request and management
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- ❌ **Edit mode toggle**: Switch between read-only and edit modes
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- ❌ **Entry activation**: Toggle entries active/inactive
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- ❌ **Entry reordering**: Move entries up/down in the list
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- ❌ **Entry editing**: Modify IP addresses, hostnames, comments
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- ❌ **File backup**: Automatic backup before modifications
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### Phase 4: Advanced Edit Features
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- ❌ **Add new entries**: Create new host entries
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- ❌ **Delete entries**: Remove host entries
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- ❌ **Bulk operations**: Select and modify multiple entries
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- ❌ **Validation**: Real-time validation of IP addresses and hostnames
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- ❌ **Undo/Redo**: Command pattern implementation
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### Phase 5: Advanced Features
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- ❌ **DNS resolution**: Resolve hostnames to IP addresses
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- ❌ **IP comparison**: Compare stored vs resolved IPs
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- ❌ **CNAME support**: Store DNS names alongside IP addresses
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- ❌ **Undo/Redo**: Command pattern implementation
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- ❌ **File validation**: Comprehensive validation before saving
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- ❌ **Import/Export**: Support for different file formats
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- ❌ **Configuration**: User preferences and settings
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### Phase 6: Polish
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- ❌ **Error handling**: Graceful error handling and user feedback
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- ❌ **Help system**: In-app help and keyboard shortcuts
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- ❌ **Configuration**: User preferences and settings
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- ❌ **Error handling**: Enhanced error handling and user feedback
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- ❌ **Performance**: Optimization for large hosts files
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- ❌ **Accessibility**: Screen reader support and keyboard accessibility
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- ❌ **Documentation**: User manual and installation guide
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## Current Status
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### Development Stage
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**Stage**: Project Initialization
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**Progress**: 10% (Foundation documentation complete)
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**Next Milestone**: Basic project structure and dependencies
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**Stage**: Phase 1 Complete - Foundation Established
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**Progress**: 25% (Core functionality working)
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**Next Milestone**: Enhanced read-only features
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### Immediate Blockers
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1. **Project structure**: Need to create proper package layout
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2. **Dependencies**: Must add textual framework to begin TUI development
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3. **Entry point**: Configure uv to run the application properly
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### Phase 1 Achievements
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1. ✅ **Fully functional TUI**: Application successfully loads and displays hosts file
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2. ✅ **Robust parsing**: Handles comments, inactive entries, IPv4/IPv6 addresses
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3. ✅ **Clean architecture**: Well-structured codebase with separation of concerns
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4. ✅ **Comprehensive testing**: 42 tests covering models and parser functionality
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5. ✅ **Code quality**: All linting and formatting checks passing
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### Immediate Next Steps
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1. **Enhanced UI**: Improve visual feedback and entry highlighting
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2. **Sorting/Filtering**: Add basic data manipulation features
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3. **Help system**: Implement proper help modal
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4. **Status improvements**: Better visual indicators for entry states
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### Recent Accomplishments
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- Completed comprehensive project planning and documentation
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- Established clear architecture and design patterns
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- Created memory bank system for project continuity
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- Defined development phases and priorities
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- Successfully implemented complete Phase 1 foundation
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- Created robust data models with validation
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- Built comprehensive hosts file parser with comment preservation
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- Developed functional TUI application with two-pane layout
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- Established comprehensive testing framework
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- Achieved clean code quality standards
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## Technical Implementation Details
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### Core Components Working
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- **HostEntry**: Data class with IP/hostname validation, active/inactive state
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- **HostsFile**: Container with entry management, sorting, and search capabilities
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- **HostsParser**: File I/O with atomic writes, backup creation, permission checking
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- **HostsManagerApp**: Textual-based TUI with reactive state management
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### Test Coverage
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- **Models**: 27 tests covering all data model functionality
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- **Parser**: 15 tests covering file operations and edge cases
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- **Coverage**: All core functionality thoroughly tested
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### Code Quality
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- **Linting**: All ruff checks passing
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- **Type hints**: Comprehensive typing throughout codebase
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- **Documentation**: Detailed docstrings and comments
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- **Error handling**: Proper exception handling in core components
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## Known Issues
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### Current Limitations
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- **Placeholder implementation**: main.py only prints hello message
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- **Missing dependencies**: Core frameworks not yet added
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- **No package structure**: Files not organized in proper Python package
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- **No tests**: Testing framework not yet configured
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- **Help system**: Currently shows status message instead of modal
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- **Entry highlighting**: Basic selection without visual enhancement
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- **No edit capabilities**: Read-only mode only (by design for Phase 1)
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- **No sorting/filtering**: Basic display only
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### Technical Debt
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- **Temporary main.py**: Needs to be moved to proper location
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- **Missing type hints**: Will need comprehensive typing
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- **No error handling**: Basic error handling patterns needed
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- **No logging**: Logging system not yet implemented
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- **Help modal**: Need to implement proper screen for help
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- **Visual polish**: Entry highlighting and status indicators need improvement
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- **Error messages**: Could be more user-friendly
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- **Performance**: Not yet optimized for very large hosts files
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## Evolution of Project Decisions
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### Initial Decisions (Current)
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- **Python 3.13**: Chosen for modern features and performance
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- **Textual**: Selected for rich TUI capabilities
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- **uv**: Adopted for fast package management
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- **ruff**: Chosen for code quality and speed
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### Confirmed Decisions
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- **Python 3.13**: Excellent choice for modern features
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- **Textual**: Perfect for rich TUI development
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- **uv**: Fast and reliable package management
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- **ruff**: Excellent code quality tooling
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- **Dataclasses**: Clean and efficient for data models
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### Architecture Evolution
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- **Layered approach**: Decided on clear separation of concerns
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- **Command pattern**: Chosen for undo/redo functionality
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- **Immutable state**: Selected for predictable state management
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- **Permission model**: Explicit edit mode for safety
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### Architecture Validation
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- **Layered approach**: Proven effective with clear separation
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- **Parser design**: Robust handling of real-world hosts files
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- **Reactive UI**: Textual's reactive system working well
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- **Test-driven**: Comprehensive testing paying dividends
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### Design Considerations
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- **Safety first**: Read-only default mode prioritized
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- **User experience**: Keyboard-driven interface emphasized
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- **File integrity**: Atomic operations and validation required
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- **Performance**: Responsive UI for large files planned
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### Design Successes
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- **Safety first**: Read-only default working as intended
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- **File integrity**: Atomic operations and backup system solid
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- **User experience**: Keyboard navigation intuitive
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- **Code organization**: Package structure clean and maintainable
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## Success Metrics Progress
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### Completed Metrics
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- ✅ **Project documentation**: Comprehensive planning complete
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- ✅ **Architecture clarity**: Clear technical direction established
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- ✅ **Development setup**: Basic environment ready
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### Completed Metrics ✅
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- ✅ **Functional prototype**: TUI application fully working
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- ✅ **File parsing**: Robust hosts file reading and writing
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- ✅ **Code quality**: All quality checks passing
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- ✅ **Test coverage**: Comprehensive test suite implemented
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- ✅ **Architecture**: Clean, maintainable codebase structure
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### Pending Metrics
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- ❌ **Functional prototype**: Basic TUI not yet implemented
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- ❌ **File parsing**: Hosts file reading not yet working
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- ❌ **User testing**: No user interface to test yet
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- ❌ **Performance benchmarks**: No code to benchmark yet
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### Next Phase Metrics
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- ❌ **Enhanced UX**: Improved visual feedback and interactions
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- ❌ **Data manipulation**: Sorting and filtering capabilities
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- ❌ **User testing**: Feedback on current interface
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- ❌ **Performance benchmarks**: Testing with large hosts files
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## Next Session Priorities
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1. **Create project structure**: Set up src/hosts/ package layout
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2. **Add dependencies**: Install textual and pytest
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3. **Implement data models**: Create HostEntry and HostsFile classes
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4. **Basic parser**: Read and parse simple hosts file format
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5. **Minimal TUI**: Create basic application shell
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### Phase 2 Implementation
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1. **Visual enhancements**: Improve entry highlighting and status indicators
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2. **Sorting functionality**: Implement sort by IP, hostname, status
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3. **Filtering system**: Add active/inactive filtering
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4. **Help modal**: Create proper help screen
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5. **Search capability**: Basic hostname/IP search
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The project is well-planned and ready for implementation to begin.
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### Quality Improvements
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1. **Error handling**: More user-friendly error messages
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2. **Status feedback**: Better user feedback for operations
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3. **Performance testing**: Test with large hosts files
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4. **Documentation**: Update README with usage instructions
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## Phase 1 Success Summary
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Phase 1 has been **successfully completed** with all core objectives achieved:
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- ✅ **Solid foundation**: Robust architecture and codebase
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- ✅ **Working application**: Functional TUI that reads and displays hosts files
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- ✅ **Quality standards**: Clean code with comprehensive testing
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- ✅ **User experience**: Intuitive keyboard-driven interface
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- ✅ **File safety**: Proper parsing with comment preservation
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The project is ready to move into Phase 2 with enhanced read-only features.
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