@sofianedjerbi/knowledge-tree-mcp

# Modular Implementation Summary ## Overview The Knowledge Tree MCP server has been successfully refactored from a monolithic 2857-line `index.ts` file into a clean, modular architecture following SOLID principles, DRY, and KISS. ## New Structure ``` src/ ├── index.ts # Clean entry point (80 lines) ├── server/ # Server components │ ├── KnowledgeTreeServer.ts # Main server class │ ├── MCPHandlers.ts # MCP protocol handlers │ ├── ServerContext.ts # Shared context implementation │ └── types.ts # Server-specific types ├── tools/ # MCP tool implementations (12 tools) │ ├── help.ts # Help system │ ├── search.ts # Search functionality │ ├── add.ts # Create entries │ ├── update.ts # Update entries │ ├── delete.ts # Delete entries │ ├── link.ts # Link management │ ├── validate.ts # Validation │ ├── export.ts # Export functionality │ ├── indexKnowledge.ts # Knowledge indexing │ ├── stats.ts # Statistics │ ├── recent.ts # Recent changes │ └── analytics.ts # Usage analytics ├── types/ # Type definitions │ ├── KnowledgeEntry.ts # Core knowledge types │ ├── UsageTypes.ts # Analytics types │ └── ServerTypes.ts # Server/tool types ├── constants/ # Application constants │ ├── priorities.ts # Priority levels and utilities │ ├── relationships.ts # Relationship types │ └── defaults.ts # Default configurations ├── utils/ # Utility functions │ ├── fileSystem.ts # File operations │ ├── logging.ts # Usage logging │ ├── validation.ts # Validation logic │ └── export/ # Export format handlers └── web/ # Optional web interface ├── server.ts # Web server setup ├── handlers.ts # WebSocket handlers └── types.ts # Web-specific types ``` ## Key Improvements ### 1. **Separation of Concerns** - Each file has a single, clear responsibility - Tools are independent and pluggable - Server logic is separated from business logic ### 2. **Type Safety** - All types are centralized and properly exported - Strong typing throughout the codebase - Interfaces define clear contracts ### 3. **Maintainability** - Easy to find and modify specific functionality - New tools can be added without touching existing code - Clear dependency flow ### 4. **Testability** - Each module can be tested in isolation - Dependencies are injected through interfaces - Mock implementations are straightforward ### 5. **Reusability** - Common logic is extracted to utils - Constants are centralized - Export formats are pluggable ## Architecture Principles Applied ### SOLID - **S**: Single Responsibility - Each module has one job - **O**: Open/Closed - New tools don't require core changes - **L**: Liskov Substitution - Interfaces can be swapped - **I**: Interface Segregation - Minimal, focused interfaces - **D**: Dependency Inversion - Depends on abstractions ### DRY (Don't Repeat Yourself) - Validation logic centralized in utils - File operations abstracted - Constants defined once ### KISS (Keep It Simple) - Straightforward file naming - Clear module boundaries - Simple import/export structure ## Migration Benefits 1. **Code Organization**: From 1 file to 40+ focused modules 2. **Reduced Complexity**: Largest file now ~400 lines (vs 2857) 3. **Better IDE Support**: Faster navigation and autocomplete 4. **Easier Debugging**: Issues isolated to specific modules 5. **Team Collaboration**: Multiple developers can work without conflicts ## Usage The external API remains unchanged: ```bash # Same CLI interface knowledge-tree-mcp --docs ./my-docs --port 3000 # Same MCP tools available # Same resource URIs # Same web interface ``` ## Future Enhancements The modular structure makes it easy to: - Add new tools by creating a single file in `tools/` - Support new export formats in `utils/export/` - Add new validation rules in `utils/validation.ts` - Extend analytics in `tools/analytics.ts` - Create plugins or extensions The refactoring maintains 100% backward compatibility while providing a solid foundation for future development.