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diff --git a/REFACTORING.md b/REFACTORING.md deleted file mode 100644 index e8509a0..0000000 --- a/REFACTORING.md +++ /dev/null @@ -1,174 +0,0 @@ -# Code Refactoring Summary - -This document summarizes the refactoring changes made to the lsfg-vk plugin based on the code review. - -## ๐๏ธ File Structure Changes - -### Before (Single File) -``` -main.py (500+ lines) -โโโ InstallationService -โโโ DllDetectionService -โโโ ConfigurationService -โโโ Plugin -``` - -### After (Modular Package) -``` -lsfg_vk/ -โโโ __init__.py # Package exports -โโโ constants.py # All constants and configuration -โโโ types.py # TypedDict definitions for responses -โโโ base_service.py # Common functionality for all services -โโโ installation.py # InstallationService -โโโ dll_detection.py # DllDetectionService -โโโ configuration.py # ConfigurationService -โโโ plugin.py # Main Plugin class - -tests/ -โโโ conftest.py # Test configuration and fixtures -โโโ test_installation.py # Tests for InstallationService -โโโ test_configuration.py # Tests for ConfigurationService -โโโ test_dll_detection.py # Tests for DllDetectionService - -main.py # Simple import/export for Decky compatibility -requirements-test.txt # Testing dependencies -``` - -## โจ Key Improvements Implemented - -### 1. **Single Responsibility & Modularity** -- Split monolithic file into focused modules -- Each service handles one concern -- Easier to navigate and maintain -- Reduced merge conflicts - -### 2. **Constants Management** -- All hardcoded paths moved to `constants.py` -- Template-based script generation -- Environment variable names centralized -- Default values defined in one place - -### 3. **Path Handling with `pathlib.Path`** -- Replaced `os.path.*` with `pathlib.Path` -- More declarative and robust path operations -- Built-in `.mkdir(parents=True, exist_ok=True)` -- Cross-platform compatibility - -### 4. **Enhanced Error Handling** -- Specific exception catching (`OSError`, `zipfile.BadZipFile`, `shutil.Error`) -- Granular error reporting -- Consistent error response structure -- Better logging of specific failure points - -### 5. **Type Safety with TypedDict** -- Defined response structures for all methods -- Consistent API contracts -- Better IDE support and documentation -- Runtime compatibility with `Dict[str, Any]` - -### 6. **DRY Principle Implementation** -- `_remove_if_exists()` helper for file removal -- `_atomic_write()` for safe file writing -- `_ensure_directories()` for directory creation -- Unified file destination mapping - -### 7. **Atomic File Operations** -- Safe script writing with temporary files -- Prevents corruption during writes -- Proper cleanup on failures -- Consistent file permissions - -### 8. **Logger Injection** -- Services accept optional logger parameter -- Defaults to `decky.logger` when None -- Enables unit testing with mock loggers -- Better separation of concerns - -### 9. **Robust Configuration Parsing** -- Regex-based parsing instead of string splitting -- Handles edge cases (extra spaces, comments) -- Template-based generation -- Roundtrip consistency testing - -### 10. **Comprehensive Testing Framework** -- Unit tests for each service -- Mock filesystem with `pyfakefs` -- Mock logger injection -- Roundtrip testing for configuration -- Environment variable mocking - -## ๐งช Testing - -### Running Tests -```bash -# Install test dependencies -pip install -r requirements-test.txt - -# Run all tests -pytest tests/ - -# Run with coverage -pytest tests/ --cov=lsfg_vk - -# Run specific test file -pytest tests/test_installation.py -``` - -### Test Coverage -- **Installation Service**: ZIP extraction, file copying, installation checking -- **Configuration Service**: Script parsing, generation, roundtrip testing -- **DLL Detection Service**: Environment variable priority, path checking -- **Mock Integration**: All services work with mock loggers for testing - -## ๐ Migration Guide - -### For Developers -The public API remains unchanged - all existing frontend code will continue to work: - -```python -# These calls remain identical -plugin.install_lsfg_vk() -plugin.check_lsfg_vk_installed() -plugin.uninstall_lsfg_vk() -plugin.get_lsfg_config() -plugin.update_lsfg_config(...) -plugin.check_lossless_scaling_dll() -``` - -### For Maintainers -1. **Adding new features**: Add to appropriate service module -2. **Constants**: Define in `constants.py` -3. **New response types**: Add to `types.py` -4. **Testing**: Add tests for new functionality -5. **Common functionality**: Add to `base_service.py` - -## ๐ Benefits Achieved - -1. **Maintainability**: Easier to find and modify specific functionality -2. **Testability**: Comprehensive unit test coverage -3. **Reliability**: Atomic operations and better error handling -4. **Documentation**: Clear type definitions and API contracts -5. **Extensibility**: Easy to add new services or features -6. **Code Quality**: Follows Python best practices and patterns - -## ๐ Future Improvements - -### Next Steps (Not Yet Implemented) -1. **Async/Sync Decision**: Evaluate if true async I/O is needed -2. **Configuration Schema**: JSON schema validation for config files -3. **Dependency Injection**: More sophisticated service container -4. **Integration Tests**: End-to-end testing with real files -5. **Performance Monitoring**: Metrics and logging for operations -6. **Error Recovery**: More sophisticated error handling and retry logic - -### Potential Extensions -- Plugin settings persistence -- Multiple DLL version support -- Automatic updates checking -- Performance profiling integration -- Steam integration improvements - ---- - -This refactoring maintains 100% backward compatibility while significantly improving code quality, maintainability, and testability. |