hosts/memory-bank/activeContext.md
phg 1c8396f020 Add comprehensive tests for filtering and import/export functionality
- Created `test_filters.py` to test the EntryFilter and FilterOptions classes, covering default values, custom values, filtering by status, DNS type, resolution status, and search functionality.
- Implemented tests for combined filters and edge cases in filtering.
- Added `test_import_export.py` to test the ImportExportService class, including exporting to hosts, JSON, and CSV formats, as well as importing from these formats.
- Included tests for handling invalid formats, missing required columns, and warnings during import.
- Updated `uv.lock` to include `pytest-asyncio` as a dependency for asynchronous testing.
2025-08-18 10:32:52 +02:00

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# Active Context
## Current Status: Phase 4 Completed Successfully! 🎉
**Last Updated:** 2025-01-17 22:26 CET
## Recent Achievement
Successfully completed **Phase 4: Import/Export System** implementation! All 279 tests are now passing, representing a major milestone in the hosts TUI application development.
### Phase 4 Implementation Summary
-**Complete Import/Export Service** (`src/hosts/core/import_export.py`)
- Multi-format support: HOSTS, JSON, CSV
- Comprehensive validation and error handling
- DNS entry support with proper validation workarounds
- Export/import roundtrip data integrity verification
- File format auto-detection and path validation
-**Comprehensive Test Coverage** (`tests/test_import_export.py`)
- 24 comprehensive tests covering all functionality
- Export/import roundtrips for all formats
- Error handling for malformed files
- DNS entry creation with validation workarounds
- All tests passing with robust error scenarios covered
-**DNS Entry Validation Fix**
- Resolved DNS entry creation issues in import methods
- Implemented temporary IP workaround for DNS-only entries
- Fixed class name issues (`HostsParser` vs `HostsFileParser`)
- Fixed export method to use parser serialization properly
## Current System Status
- **Total Tests:** 279 passed, 5 warnings (non-critical async mock warnings)
- **Test Coverage:** Complete across all core modules
- **Code Quality:** All ruff checks passing
- **Architecture:** Clean, modular, well-documented
## Completed Phases
1.**Phase 1: DNS Resolution Foundation** - DNS service, fields, and comprehensive testing
2.**Phase 2: DNS Integration** - TUI integration, status widgets, and real-time updates
3.**Phase 3: Advanced Filtering** - Status-based, DNS-type, and search filtering with presets
4.**Phase 4: Import/Export System** - Multi-format import/export with validation and testing
## Next Phase: Phase 5 - DNS Name Support
Focus on enhancing entry modals and editing functionality to fully support DNS names alongside IP addresses:
### Phase 5 Priorities
1. **Update AddEntryModal** (`src/hosts/tui/add_entry_modal.py`)
- Add DNS name field option
- Implement mutual exclusion logic (IP vs DNS name)
- Add field deactivation when DNS name is present
2. **Enhance EditHandler** (`src/hosts/tui/edit_handler.py`)
- Support DNS name editing
- IP field deactivation logic
- Enhanced validation for DNS entries
3. **Parser DNS Metadata** (`src/hosts/core/parser.py`)
- Handle DNS name metadata in hosts file comments
- Preserve DNS information during file operations
4. **Validation Improvements**
- Enhanced mutual exclusion validation
- DNS name format validation
- Error handling for invalid combinations
## Technical Architecture Status
- **DNS Resolution Service:** Fully operational with background/manual refresh
- **Advanced Filtering:** Complete with preset management
- **Import/Export:** Multi-format support with comprehensive validation
- **TUI Integration:** Professional interface with modal dialogs
- **Data Models:** Enhanced with DNS fields and validation
- **Test Coverage:** Comprehensive across all modules
## Key Technical Insights
- DNS entry creation requires temporary IP workaround due to validation constraints
- Parser class naming conventions are critical for import functionality
- Export/import roundtrip validation ensures data integrity
- Background DNS resolution integrates seamlessly with TUI updates
- Filter system handles complex DNS entry scenarios effectively
## Development Patterns Established
- Test-Driven Development with comprehensive coverage
- Modular architecture with clear separation of concerns
- Consistent error handling and validation patterns
- Professional TUI design with modal dialogs
- Clean async integration for DNS operations