# Frontend Setup Complete

## Math Platform - Next.js 14 Base Structure

Created complete production-ready frontend structure with Next.js 14, TypeScript, shadcn/ui, and KaTeX.

## Files Created (24 total)

### Core Configuration (7 files)
1. `/home/ren/Documents/math2/frontend/package.json` - All dependencies and scripts
2. `/home/ren/Documents/math2/frontend/tsconfig.json` - Strict TypeScript configuration
3. `/home/ren/Documents/math2/frontend/next.config.js` - Next.js optimization
4. `/home/ren/Documents/math2/frontend/tailwind.config.js` - TailwindCSS + shadcn/ui
5. `/home/ren/Documents/math2/frontend/postcss.config.js` - PostCSS config
6. `/home/ren/Documents/math2/frontend/.eslintrc.json` - ESLint rules
7. `/home/ren/Documents/math2/frontend/.prettierrc.json` - Prettier config

### Environment & Config (2 files)
8. `/home/ren/Documents/math2/frontend/.env.local` - Environment variables
9. `/home/ren/Documents/math2/frontend/.gitignore` - Git ignore rules

### App Structure (3 files)
10. `/home/ren/Documents/math2/frontend/src/app/layout.tsx` - Root layout with metadata
11. `/home/ren/Documents/math2/frontend/src/app/page.tsx` - Landing page with features
12. `/home/ren/Documents/math2/frontend/src/app/globals.css` - Global styles + Tailwind

### UI Components (4 files)
13. `/home/ren/Documents/math2/frontend/src/components/ui/button.tsx` - Button component
14. `/home/ren/Documents/math2/frontend/src/components/ui/card.tsx` - Card component
15. `/home/ren/Documents/math2/frontend/src/components/ui/input.tsx` - Input component
16. `/home/ren/Documents/math2/frontend/src/components/ui/label.tsx` - Label component

### Math Components (1 file)
17. `/home/ren/Documents/math2/frontend/src/components/math/MathFormula.tsx` - KaTeX components (MathFormula, MathBlock, MathInline, MathText)

### Utilities (4 files)
18. `/home/ren/Documents/math2/frontend/src/lib/utils.ts` - Utility functions
19. `/home/ren/Documents/math2/frontend/src/lib/api.ts` - Axios API client
20. `/home/ren/Documents/math2/frontend/src/lib/validators.ts` - Zod validation schemas
21. `/home/ren/Documents/math2/frontend/src/lib/constants.ts` - App constants

### State Management (2 files)
22. `/home/ren/Documents/math2/frontend/src/store/useAuthStore.ts` - Auth state with Zustand
23. `/home/ren/Documents/math2/frontend/src/store/useModuleStore.ts` - Module state with Zustand

### Hooks (1 file)
24. `/home/ren/Documents/math2/frontend/src/hooks/useAuth.ts` - Auth hook

### Types (1 file)
25. `/home/ren/Documents/math2/frontend/src/types/index.ts` - TypeScript definitions

### Documentation (1 file)
26. `/home/ren/Documents/math2/frontend/README.md` - Complete documentation

## Key Features Implemented

### 1. TypeScript Strict Mode
- No implicit any
- Strict null checks
- No unchecked indexed access
- Exact optional property types
- Path aliases configured (@/)

### 2. Next.js 14 App Router
- Server and client components
- Metadata API for SEO
- Optimized images
- Bundle analysis
- Production-ready builds

### 3. shadcn/ui Components
- Button with variants (default, destructive, outline, ghost, link)
- Card system (Card, CardHeader, CardTitle, CardDescription, CardContent, CardFooter)
- Form components (Input, Label)
- TailwindCSS animations included

### 4. KaTeX Math Rendering
- MathFormula: Base component for LaTeX rendering
- MathBlock: Display mode formulas (centered, larger)
- MathInline: Inline formulas
- MathText: Mixed text with LaTeX delimiters ($...$ and $$...$$)

### 5. State Management (Zustand)
- useAuthStore: User authentication with localStorage persistence
- useModuleStore: Module progress and content
- Type-safe selectors for better performance

### 6. API Client
- Axios-based with interceptors
- Automatic token management
- Error handling with custom ApiError class
- Type-safe responses
- File upload support

### 7. Form Validation (Zod)
- Register schema with password confirmation
- Login schema
- Exercise submission validation
- Profile update validation

### 8. Utility Functions
- cn() for className merging (clsx + tailwind-merge)
- Date formatting and relative time
- Number formatting
- Text truncation
- Debounce function
- Email/password validation

### 9. Production Optimizations
- Security headers (CSP, XSS protection)
- Image optimization
- Bundle size analysis
- Tree shaking
- Code splitting
- Environment variable handling

### 10. Developer Experience
- ESLint with TypeScript rules
- Prettier with Tailwind plugin
- Type checking script
- Format script
- Bundle analyzer
- Hot reload in development

## Dependencies Installed

### Production (390 packages)
- next: ^14.2.0
- react: ^18.3.0
- react-dom: ^18.3.0
- typescript: ^5.4.0
- zustand: ^4.5.0
- axios: ^1.7.0
- katex: ^0.16.10
- react-katex: ^3.0.1
- tailwindcss: ^3.4.0
- clsx: ^2.1.0
- tailwind-merge: ^2.3.0
- lucide-react: ^0.378.0
- @radix-ui/*: UI primitives
- zod: ^3.23.0
- react-hook-form: ^7.51.0

### Development
- @types/node: ^20.12.0
- @types/react: ^18.3.0
- @types/katex: ^0.16.7
- eslint: ^8.57.0
- prettier: ^3.2.0
- @next/bundle-analyzer: ^14.2.0

## Next Steps

### 1. Install Dependencies (Already Done)
```bash
cd /home/ren/Documents/math2/frontend
npm install
```

### 2. Development Server
```bash
npm run dev
```
Access at: http://localhost:3000

### 3. Type Checking
```bash
npm run type-check
```

### 4. Build for Production
```bash
npm run build
```

### 5. Start Production Server
```bash
npm start
```

## Project Structure Ready For

- **Authentication Pages**: Login, Register, Password Reset
- **Dashboard**: User progress, modules overview
- **Module Pages**: Introduction, Examples, Exercises, Answers
- **Exercise System**: Interactive solver with validation
- **Ranking Pages**: Global and per-module leaderboards
- **Achievement System**: Badges and progress tracking
- **Profile Management**: User settings and preferences

## Integration Points

### Backend API
- Base URL: `http://localhost:3001` (configurable via .env.local)
- Endpoints defined in `/src/lib/api.ts`
- Authentication via JWT with localStorage
- Automatic token refresh on 401 errors

### Design System
- Colors: HSL-based for theming support
- Dark mode ready (CSS variables configured)
- Responsive breakpoints (mobile-first)
- Accessibility features (ARIA labels, keyboard navigation)

## Type Safety

All components and functions are fully typed with TypeScript:
- User authentication types
- Module and exercise types
- API response types
- Form validation types
- Achievement and ranking types

## Performance Features

- Code splitting by route
- Dynamic imports for heavy components
- Image optimization
- Font optimization (Inter font)
- CSS purging (TailwindCSS)
- Tree shaking (Next.js)

## Security

- CSRF protection
- XSS protection headers
- Content Security Policy ready
- Environment variable validation
- Input sanitization (Zod schemas)

## Browser Support

- Chrome (latest)
- Firefox (latest)
- Safari (latest)
- Edge (latest)
- Mobile browsers (iOS Safari, Chrome Mobile)

## Files Location Summary

```
/home/ren/Documents/math2/frontend/
├── src/
│   ├── app/                    # Next.js App Router
│   ├── components/             # React components
│   │   ├── ui/                # shadcn/ui components
│   │   └── math/              # KaTeX math components
│   ├── lib/                   # Utilities
│   ├── store/                 # Zustand stores
│   ├── hooks/                 # Custom hooks
│   └── types/                 # TypeScript types
├── public/                    # Static assets
├── package.json              # Dependencies
├── tsconfig.json             # TypeScript config
├── next.config.js            # Next.js config
├── tailwind.config.js        # TailwindCSS config
└── .env.local                # Environment variables
```

## Verification

All files have been created and verified:
✅ TypeScript strict mode enabled
✅ Type checking passes (npm run type-check)
✅ All dependencies installed
✅ Configuration files optimized
✅ Components production-ready
✅ State management configured
✅ API client configured
✅ Math rendering working (KaTeX)
✅ ESLint and Prettier configured

## Ready for Production

The frontend base is now ready for:
1. Docker containerization
2. Backend API integration
3. Authentication flow implementation
4. Module content pages
5. Exercise system development
6. Ranking and achievements
7. Testing and deployment

---

**Created by**: Frontend Developer (math-platform-builders team)
**Date**: 2026-03-23
**Status**: ✅ COMPLETE - Ready for development
