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Add extensive inline documentation and module-level comments to critical backend components: - main.rs: Document server initialization, middleware layers, security headers, CORS configuration, and graceful shutdown - auth.rs: Document JWT authentication, token management, cookie handling, and security validations - csrf.rs: Document CSRF protection implementation including token format, validation, and double-submit cookie pattern - handlers/auth.rs: Document login/logout handlers, rate limiting, timing-attack resistance, and security features All functions now include: - Purpose and behavior descriptions - Parameter and return value documentation - Error conditions and security considerations - Usage examples where applicable This documentation improves code maintainability and helps developers understand the security architecture.
Add extensive documentation to the database module (db.rs): - Module-level documentation explaining architecture and schema - Document database configuration (WAL mode, connection pooling, FTS5) - Document security features (foreign keys, slug validation, bcrypt) - Document performance optimizations (indexing, connection pooling) - Add comprehensive documentation for: - create_pool(): Database initialization and configuration - validate_slug(): URL-safe slug validation with security notes - run_migrations(): Schema migrations and data seeding The documentation explains: - Database schema and table relationships - Connection pool configuration and rationale - Migration process and initial data seeding - Admin user creation from environment variables - Full-text search infrastructure with FTS5 - Security measures and validation This improves understanding of the persistence layer and data management.
Add comprehensive module-level documentation for remaining handler modules: - handlers/tutorials.rs: Tutorial CRUD operations - Document endpoints and validation rules - Explain content limits and icon/color whitelisting - Note FTS5 search integration and version tracking - handlers/comments.rs: Comment management - Document pagination and author attribution - Explain security measures (JWT-based author, CSRF) - Note foreign key cascade deletion - handlers/search.rs: Full-text search - Document FTS5-based search functionality - Explain query sanitization and token processing - Note BM25 ranking algorithm and performance optimizations This completes the comprehensive documentation of the backend codebase, covering all major modules from server initialization to data handlers.
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