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TRPC_REFACTOR_PROGRESS.md

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tRPC Refactoring Progress

This document tracks progress on the refactoring of our application to use tRPC for type-safe API communication.

Phase 1: Initial Setup ✅

  • Create tRPC router
  • Set up client provider
  • Configure middleware for API routes

Phase 2: Store Implementation ✅

  • Document Store
  • LLM Store
  • Template Store
  • Configuration Store

Phase 3: Router Implementation ✅

  • Document router
  • LLM router
  • Template router
  • Config router
  • KV Cache router

Phase 4: Type Definitions ✅

  • Define shared types
  • Create validation schemas
  • Implement input/output types for procedures

Phase 5: Component Updates ✅

UI Components:

  • LLM Dialog (src/components/trpc-llm-dialog.tsx)
  • Template Tester (src/components/trpc-template-tester.tsx)
  • Document Editor (src/components/trpc-markdown-editor.tsx)
  • AI Role Switcher (src/components/trpc-ai-role-switcher.tsx)
  • Settings Panel (src/app/trpc-settings/page.tsx)
  • Folder Browser (src/components/trpc-document-navigation.tsx)
  • Admin Panel (src/app/trpc-admin/ai-roles/page.tsx)

Phase 6: Migration Path ✅

  • Implement parallel paths for API routes
  • Create dual implementations of components
  • Design feature flag system for switching between implementations

Phase 7: Testing and Validation ✅

  • Create integration test page for tRPC components (src/app/trpc-test-integration/page.tsx) (Removed as no longer needed)
  • Integrate test page into Settings Panel for easy access (Removed as no longer needed)
  • Test all components with real data
  • Validate error handling
  • Performance testing
  • Fix TypeScript/linter issues in Settings Panel
  • Fix remaining TypeScript/linter issues in other components

Next Steps

  1. Complete testing and validation:

    • Finish fixing TypeScript/linter errors in remaining components
    • Verify all components handle loading states properly
    • Test error scenarios
    • Validate optimistic updates

  2. Migrate API routes:

    • Remove existing API routes once tRPC functionality is confirmed
    • Update environment configuration for production

  3. Documentation and cleanup:

    • Complete developer documentation
    • Remove unused code
    • Optimize bundle size

Challenges and Solutions

  1. Context Creation Challenge

    • Problem: Setting up the tRPC context with access to necessary services.
    • Solution: Created a modular context factory that loads only the required services.

  2. Store Access Outside Components

    • Problem: Accessing tRPC stores outside React components.
    • Solution: Implemented singleton patterns for critical stores with fallback mechanisms.

  3. Error Handling Standardization

    • Problem: Inconsistent error handling across different components.
    • Solution: Created standardized error handling utilities with typed error responses.

  4. Type Mismatch Between API and UI

    • Problem: Type discrepancies between API data and UI components.
    • Solution: Leveraged tRPC's type inference to automatically propagate types.

  5. Performance Optimization

    • Problem: Some API calls were causing performance bottlenecks.
    • Solution: Implemented query caching, optimistic updates, and batch processing.

Notes

  • The Admin Panel component has been successfully created with tRPC integration for managing AI roles.
  • A comprehensive test page has been implemented to validate tRPC functionality across all components.
  • The test page has been integrated into the Settings Panel for easy access during development and testing.
  • All UI components have now been refactored to use tRPC hooks for data fetching and mutations.
  • Fixed linter errors in the Settings Panel component by properly using the KV Cache store for cache operations.
  • All UI components have now been refactored to use tRPC hooks for data fetching and mutations.