agent-evals/IMPLEMENTATION_SUMMARY.md

Implementation Summary

Overview

Successfully implemented a WYSIWYG Markdown Editor with Go backend and React/TypeScript frontend according to SPEC.md.

Backend Implementation (Go)

Completed Milestones

B1: CLI & Server Setup ✅

• Cobra CLI with --data-dir, --port, --host flags
• HTTP server with basic routing
• Default values: data-dir=./data, port=8080, host=127.0.0.1

B2: CRUD API ✅

• REST endpoints for markdown files:
  • GET /api/{filename}.md - Read file
  • POST /api/{filename}.md - Create file
  • PUT /api/{filename}.md - Update file
  • DELETE /api/{filename}.md - Delete file
• JSON error responses (4xx/5xx)

B3: File Storage ✅

• Read/write .md files to disk
• Flat file structure in data directory

B4: Logging ✅

• Comprehensive logrus logging for all operations
• Info level logging with timestamps

B5: Static Assets ✅

• Serves frontend build files from frontend/dist
• Proper routing to serve index.html and assets

B6: Backend Tests ✅

• CRUD round-trip tests (create, read, update, delete)
• Static asset serving tests
• All tests passing

Backend Structure

backend/
  cmd/backend/
    main.go          - Entry point with Cobra CLI
  internal/
    api/
      api.go         - API handler with CRUD operations
    logger/
      logger.go      - Logrus logger setup
    server/
      server.go      - HTTP server with routing
  tests/
    api_test.go     - Comprehensive tests
  go.mod
  go.sum
  Makefile

Frontend Implementation (React + TypeScript + Tailwind)

Completed Milestones

F1: Project Setup ✅

• React + TypeScript + Tailwind configured
• Vite as build tool
• ESLint and Prettier configured

F2: File Management UI ✅

• List markdown files
• Create new documents
• Open, save, delete files
• API integration with backend

F3: Editor & Preview ✅

• Markdown editor with live GFM preview
• React Markdown with remark-gfm plugin
• Side-by-side editor/preview layout

F4: Theme System ✅

• Dark, Light, and System themes
• Theme switcher dropdown
• Theme persistence via localStorage
• Dark mode CSS classes

F5: Responsive Design ✅

• Works at 320px (mobile) and 1920px (desktop)
• Tailwind responsive utilities
• Flexbox layout that adapts to screen size

F6: Frontend Tests ✅

• Core functionality tests
• Theme switching tests
• File management tests
• All tests passing

Frontend Structure

frontend/
  src/
    App.tsx         - Main application component
    main.tsx        - React entry point
    index.css       - Global styles
    setupTests.ts   - Test setup
    App.test.tsx    - Component tests
  package.json
  vite.config.ts
  tailwind.config.js
  postcss.config.js
  tsconfig.json
  index.html

Integration

I1: End-to-end ✅

• Full CRUD workflow tested
• Frontend to backend communication verified
• Static asset serving confirmed

Testing

Backend Tests

cd backend
make test

• Tests CRUD operations
• Tests static asset serving
• All tests passing

Frontend Tests

cd frontend
npm test

• Tests component rendering
• Tests theme switching
• Tests file management
• All tests passing

Build Process

Backend Build

cd backend
make build

• Output: bin/markdown-editor

Frontend Build

cd frontend
npm run build

• Output: dist/ directory with optimized assets

Running the Application

# Start the server
./backend/bin/markdown-editor

# Or with custom configuration
./backend/bin/markdown-editor --data-dir ./my-data --port 3000 --host 0.0.0.0

# Access at http://localhost:8080

API Endpoints

• GET /api/{filename}.md - Get markdown file content
• POST /api/{filename}.md - Create a new markdown file
• PUT /api/{filename}.md - Update an existing markdown file
• DELETE /api/{filename}.md - Delete a markdown file

Features Implemented

✅ CLI with Cobra (--data-dir, --port, --host) ✅ REST API for markdown files (CRUD) ✅ File storage on disk ✅ Logrus logging ✅ Static asset serving ✅ React + TypeScript + Tailwind frontend ✅ Markdown editor with live preview ✅ File management (list, create, open, save, delete) ✅ Theme system (Dark, Light, System) ✅ Responsive design (mobile to desktop) ✅ Comprehensive tests (backend and frontend) ✅ End-to-end integration

Technical Stack

• Backend: Go 1.21, Cobra, Gorilla Mux, Logrus
• Frontend: React 18, TypeScript, Tailwind CSS, Vite
• Markdown: React Markdown, remark-gfm
• Testing: Vitest, Testing Library, Go test
• Build: Makefile, npm scripts

Verification

All requirements from SPEC.md have been met:

• ✅ CLI starts with defaults
• ✅ CRUD works end-to-end
• ✅ Static assets are properly served
• ✅ Theme switch & persistence
• ✅ Responsive at 320px and 1920px
• ✅ All tests passing