# OCR-MCP Frontend Development Plan
## Overview
Complete rewrite of OCR-MCP webapp using React/TypeScript to replace the current vanilla JavaScript implementation. Target: **Beautiful, modern enterprise-grade frontend** with state-of-the-art (SOTA) UX, comprehensive theming, accessibility compliance, and all modern conveniences.
### Beauty & UX Requirements
- **Glassmorphism & Modern Design**: Beautiful glass-morphism effects, smooth animations, elegant typography
- **Dark/Light Mode**: Seamless theme switching with system preference detection
- **Modal System**: Rich modal dialogs for logging, help, settings, scanner configuration
- **Responsive Excellence**: Perfect on desktop, tablet, and mobile
- **Micro-interactions**: Delightful hover effects, loading states, and transitions
- **Professional Polish**: Enterprise-grade attention to detail and user experience
## Current State Analysis
- **Current Issues**: Monolithic vanilla JS (1539 lines), poor UX, no theming, no accessibility, static layout
- **Requirements**: Topbar (auth/theme/help/logger/language), three-column layout with slide-in sidebars
- **Target**: React 18 + TypeScript, modern tooling, performance optimized, fully accessible
## Phase 1: Foundation Setup (Week 1-2)
### 1.1 Project Structure & Tooling
- [ ] Set up Vite + React + TypeScript project
- [ ] Configure Tailwind CSS + Radix UI + Lucide icons
- [ ] Set up ESLint + Prettier + TypeScript strict mode
- [ ] Configure path aliases (@/components, @/hooks, etc.)
- [ ] Set up Vitest + React Testing Library
- [ ] Configure Storybook for component development
- [ ] Set up Husky + lint-staged for pre-commit hooks
### 1.2 Core Architecture
- [ ] Implement Zustand stores (auth, theme, layout, notifications)
- [ ] Set up React Query for server state management
- [ ] Create API service layer with Axios interceptors
- [ ] Implement error boundaries and global error handling
- [ ] Set up React Router with protected routes
- [ ] Create base UI components (Button, Input, Card, etc.)
- [ ] Implement CSS custom properties for theming
### 1.3 Layout System
- [ ] Create ThreeColumnLayout component
- [ ] Implement Topbar with auth/theme/language controls
- [ ] Build LeftSidebar with slide-in animation (page selector)
- [ ] Create RightSidebar for metadata/context (slide-in)
- [ ] Add responsive behavior and mobile support
- [ ] Implement sidebar state management
## Phase 2: Core Features (Week 3-4)
### 2.1 Authentication System
- [ ] Implement login/logout flows
- [ ] Create user profile management
- [ ] Add session persistence and refresh
- [ ] Build protected route guards
- [ ] Add authentication state management
### 2.2 Theming System
- [ ] Implement dark/light mode toggle
- [ ] Add system preference detection
- [ ] Create theme persistence (localStorage)
- [ ] Build comprehensive color palette
- [ ] Add theme switcher to topbar
### 2.3 File Upload & Processing
- [ ] Port existing file upload logic to React
- [ ] Implement drag-and-drop with progress
- [ ] Create file queue management
- [ ] Add file validation and preview
- [ ] Build processing status indicators
- [ ] Implement batch processing UI
### 2.4 Page Components
- [ ] Upload page with enhanced file handling
- [ ] Batch processing page
- [ ] Scanner control page
- [ ] Analysis page with document processing
- [ ] Quality assessment page
- [ ] Results viewer with tabs
## Phase 3: Advanced Features & Beauty (Week 5-6)
### 3.1 Modal System Implementation (Week 5)
- [ ] Build beautiful modal infrastructure with glassmorphism
- [ ] Create LoggerModal with real-time structured logging display
- [ ] Implement HelpModal with searchable documentation system
- [ ] Build SettingsModal with tabbed preferences interface
- [ ] Create ScannerSettingsModal with device configuration
- [ ] Add modal animations, transitions, and micro-interactions
- [ ] Implement responsive modal behavior (mobile drawer fallback)
- [ ] Add keyboard shortcuts and accessibility features
### 3.2 Internationalization & Polish (Week 6)
- [ ] Set up i18next with React integration
- [ ] Add English, German, French, Spanish support
- [ ] Implement language selector in topbar
- [ ] Create translation files and lazy loading
- [ ] Add RTL language support
- [ ] Implement date/number formatting
- [ ] Polish UI with final design touches and animations
### 3.3 Performance Optimization
- [ ] Implement code splitting (route-based)
- [ ] Add lazy loading for components
- [ ] Optimize bundle size (< 200KB initial)
- [ ] Implement virtual scrolling for large lists
- [ ] Add image optimization and WebP support
- [ ] Set up service worker for offline support
## Phase 4: Production & Polish (Week 7-8)
### 4.1 Accessibility (WCAG 2.1 AA)
- [ ] Audit all components for accessibility
- [ ] Add ARIA labels and semantic HTML
- [ ] Implement keyboard navigation
- [ ] Add focus management and indicators
- [ ] Ensure color contrast compliance
- [ ] Test with screen readers
### 4.2 Testing & Quality
- [ ] Write unit tests (> 80% coverage)
- [ ] Create integration tests
- [ ] Implement E2E tests with Playwright
- [ ] Add accessibility testing
- [ ] Performance testing and monitoring
- [ ] Cross-browser testing
### 4.3 Build & Deployment
- [ ] Configure production build optimization
- [ ] Set up Docker integration
- [ ] Implement CI/CD pipeline
- [ ] Add environment configurations
- [ ] Configure CDN for static assets
- [ ] Set up monitoring and error tracking
### 4.4 Documentation & Training
- [ ] Create comprehensive documentation
- [ ] Write component API docs
- [ ] Create deployment guides
- [ ] Add developer onboarding materials
- [ ] Document maintenance procedures
## Key Components to Build
### Layout Components
```
components/layout/
├── Topbar/
│ ├── Topbar.tsx
│ ├── AuthControls.tsx
│ ├── ThemeToggle.tsx
│ ├── LanguageSelector.tsx
│ ├── HelpButton.tsx
│ └── LoggerPanel.tsx
├── ThreeColumnLayout/
│ ├── ThreeColumnLayout.tsx
│ ├── LeftSidebar.tsx
│ ├── RightSidebar.tsx
│ └── MainContent.tsx
└── PageSelector/
├── PageSelector.tsx
└── PageItem.tsx
```
### Feature Components
```
components/features/
├── upload/
│ ├── FileDropzone.tsx
│ ├── FileQueue.tsx
│ ├── ProcessingStatus.tsx
│ └── ResultsViewer.tsx
├── scanner/
│ ├── ScannerDiscovery.tsx
│ ├── ScannerControls.tsx
│ └── ScanPreview.tsx
└── analysis/
├── DocumentAnalyzer.tsx
├── LayoutDetection.tsx
└── TableExtraction.tsx
```
### UI Components
```
components/ui/
├── Button.tsx
├── Input.tsx
├── Card.tsx
├── Dialog.tsx
├── DropdownMenu.tsx
├── Progress.tsx
├── Tabs.tsx
├── Toast.tsx
├── Tooltip.tsx
├── Modal.tsx
├── Drawer.tsx
├── Sheet.tsx
├── Popover.tsx
└── Badge.tsx
```
### Modal Components (All Mod Cons!)
```
components/modals/
├── LoggerModal/
│ ├── LoggerModal.tsx # Structured logging display
│ ├── LogEntry.tsx # Individual log entry component
│ ├── LogFilters.tsx # Filter/search logs
│ ├── LogExport.tsx # Export logs functionality
│ └── LogLevels.tsx # Log level indicators
├── HelpModal/
│ ├── HelpModal.tsx # Comprehensive help system
│ ├── HelpSearch.tsx # Searchable documentation
│ ├── HelpTopics.tsx # Categorized help content
│ ├── HelpNavigation.tsx # Help content navigation
│ └── HelpShortcuts.tsx # Keyboard shortcuts display
├── SettingsModal/
│ ├── SettingsModal.tsx # Application settings
│ ├── GeneralSettings.tsx # General preferences
│ ├── AppearanceSettings.tsx # Theme & appearance
│ ├── NotificationSettings.tsx # Notification preferences
│ └── PrivacySettings.tsx # Privacy & security
├── ScannerSettingsModal/
│ ├── ScannerSettingsModal.tsx # Scanner configuration
│ ├── DeviceSelection.tsx # Scanner device picker
│ ├── ScanProfiles.tsx # Predefined scan profiles
│ ├── AdvancedSettings.tsx # DPI, color, format options
│ └── CalibrationTools.tsx # Scanner calibration
└── shared/
├── ModalHeader.tsx # Consistent modal headers
├── ModalFooter.tsx # Modal action buttons
├── ModalContent.tsx # Scrollable content areas
└── ModalAnimations.tsx # Beautiful modal animations
```
## Modal System Design (All Mod Cons!)
### Logger Modal - Structured Logging Display
**Requirements:**
- Real-time log streaming with WebSocket integration
- Color-coded log levels (ERROR=red, WARN=orange, INFO=blue, DEBUG=gray)
- Advanced filtering by level, timestamp, source, and content
- Search functionality with regex support
- Export logs to JSON/CSV with date ranges
- Auto-scroll to bottom with manual override
- Log entry expansion for detailed stack traces
- Performance optimized for large log volumes (virtual scrolling)
- Beautiful glassmorphism backdrop with blur effects
**UX Features:**
- Live log counter in topbar badge
- Keyboard shortcuts (Ctrl+L to open)
- Click log entries to copy to clipboard
- Filter presets (Last 5min, Last Hour, Errors Only)
- Log level toggle buttons with visual indicators
### Help Modal - Integrated Documentation
**Requirements:**
- Searchable documentation with instant results
- Categorized help topics (Getting Started, Features, Troubleshooting)
- Keyboard shortcuts reference with interactive demo
- Context-sensitive help (show relevant help based on current page)
- Video tutorials integration (placeholder for future)
- FAQ section with expandable answers
- Contact support integration
- Offline documentation access
**UX Features:**
- Full-text search with highlighting
- Breadcrumb navigation
- Recently viewed topics
- Bookmark favorite help articles
- Print-friendly documentation
- Dark mode support for reading comfort
### Settings Modal - Application Preferences
**Requirements:**
- Tabbed interface (General, Appearance, Notifications, Privacy, Advanced)
- Real-time preview of changes
- Import/export settings functionality
- Reset to defaults option
- Settings validation with helpful error messages
- Cross-device synchronization (future feature)
- Keyboard accessibility (Tab navigation, Enter to save)
**UX Features:**
- Dirty state indicators (unsaved changes warning)
- Preview panels for theme and layout changes
- One-click apply vs save and apply
- Settings search functionality
- Tooltips explaining each setting
### Scanner Settings Modal - Device Configuration
**Requirements:**
- Device discovery and selection
- Pre-configured scan profiles (Document, Photo, OCR, Archive)
- Advanced settings (DPI, color depth, paper size, duplex)
- Device calibration tools and status
- Profile management (save, load, delete custom profiles)
- Test scan functionality with preview
- Device health monitoring and diagnostics
**UX Features:**
- Device status indicators (Online, Busy, Error)
- One-click profile application
- Scan preview before applying settings
- Profile import/export
- Device capability detection and UI adaptation
- Accessibility: High contrast mode for scanner previews
### Modal System Architecture
**Technical Requirements:**
- Consistent modal sizing (sm, md, lg, xl, fullscreen)
- Proper focus management and keyboard navigation
- Escape key and backdrop click to close
- Modal stacking support (multiple modals)
- Responsive design (mobile drawer fallback)
- Animation system (slide-in, fade, scale)
- Portal rendering for proper z-index management
- Memory leak prevention (proper cleanup)
**Design System:**
- Glassmorphism effects with backdrop blur
- Consistent spacing and typography
- Loading states and skeleton screens
- Error states with recovery actions
- Success confirmations with animations
- Progressive disclosure (show advanced options on demand)
## State Management Architecture
### Zustand Stores
```typescript
// stores/auth.ts
interface AuthState {
user: User | null;
isAuthenticated: boolean;
login: (credentials: LoginCredentials) => Promise<void>;
logout: () => void;
refreshToken: () => Promise<void>;
}
// stores/theme.ts
interface ThemeState {
mode: 'light' | 'dark' | 'system';
setMode: (mode: ThemeMode) => void;
resolvedMode: 'light' | 'dark';
}
// stores/layout.ts
interface LayoutState {
leftSidebarOpen: boolean;
rightSidebarOpen: boolean;
toggleLeftSidebar: () => void;
toggleRightSidebar: () => void;
}
```
### React Query Integration
```typescript
// API keys and queries
const OCR_JOBS_KEY = ['ocr', 'jobs'];
const SCANNER_DEVICES_KEY = ['scanner', 'devices'];
const BATCH_OPERATIONS_KEY = ['batch', 'operations'];
// Usage in components
const { data: jobs } = useQuery({
queryKey: OCR_JOBS_KEY,
queryFn: ocrApi.getJobs,
});
const { mutate: processFile } = useMutation({
mutationFn: ocrApi.processFile,
onSuccess: () => {
queryClient.invalidateQueries({ queryKey: OCR_JOBS_KEY });
},
});
```
## API Service Layer
### Service Structure
```
services/
├── api/
│ ├── client.ts # Axios client with interceptors
│ ├── ocr.ts # OCR processing endpoints
│ ├── scanner.ts # Scanner control endpoints
│ ├── batch.ts # Batch processing endpoints
│ └── health.ts # System health monitoring
├── websocket/
│ └── realtime.ts # Real-time updates
└── storage/
└── localStorage.ts # Persistent local storage
```
### API Client Setup
```typescript
// services/api/client.ts
const apiClient = axios.create({
baseURL: import.meta.env.VITE_API_BASE_URL,
timeout: 10000,
});
// Request interceptor for auth
apiClient.interceptors.request.use((config) => {
const token = authStore.getState().token;
if (token) {
config.headers.Authorization = `Bearer ${token}`;
}
return config;
});
// Response interceptor for error handling
apiClient.interceptors.response.use(
(response) => response,
(error) => {
if (error.response?.status === 401) {
authStore.getState().logout();
}
return Promise.reject(error);
}
);
```
## Design Excellence & Beauty System
### Visual Design Requirements
- **Glassmorphism**: Backdrop blur effects, translucent surfaces, subtle borders
- **Modern Typography**: Perfect font hierarchy, optimal line heights, beautiful spacing
- **Color Harmony**: Carefully curated color palette with semantic meaning
- **Micro-interactions**: Hover effects, button presses, loading states, transitions
- **Layout Perfection**: Golden ratio proportions, consistent spacing, visual balance
- **Iconography**: Consistent Lucide icons with proper sizing and alignment
- **Shadows & Depth**: Subtle shadows for layering, depth perception, focus indication
### Animation System
- **Page Transitions**: Smooth route changes with fade/slide effects
- **Modal Animations**: Scale-in modals, slide-in drawers, backdrop blur
- **Loading States**: Skeleton screens, progress indicators, smooth transitions
- **Hover Effects**: Subtle scale, color transitions, shadow changes
- **State Changes**: Form validation feedback, button state transitions
- **Performance**: GPU-accelerated animations, reduced motion preferences
### Responsive Design Excellence
- **Desktop First**: Perfect experience on large screens (1920px+)
- **Tablet Adaptation**: Touch-friendly controls, optimized layouts
- **Mobile Mastery**: Drawer-based navigation, stacked layouts, thumb-friendly zones
- **Breakpoint Strategy**: Semantic breakpoints, content-driven responsive behavior
## Theming Implementation
### CSS Custom Properties
```css
/* src/styles/globals.css */
:root {
--background: 0 0% 100%;
--foreground: 222.2 84% 4.9%;
--primary: 221.2 83.2% 53.3%;
--primary-foreground: 210 40% 98%;
/* ... more variables */
}
[data-theme="dark"] {
--background: 222.2 84% 4.9%;
--foreground: 210 40% 98%;
--primary: 217.2 91.2% 59.8%;
/* ... dark mode overrides */
}
```
### Theme Provider
```typescript
// components/providers/ThemeProvider.tsx
export function ThemeProvider({ children }: { children: React.ReactNode }) {
const { resolvedMode } = useThemeStore();
useEffect(() => {
document.documentElement.setAttribute('data-theme', resolvedMode);
}, [resolvedMode]);
return <>{children}</>;
}
```
## Testing Strategy
### Unit Tests
```typescript
// __tests__/components/Button.test.tsx
import { render, screen } from '@testing-library/react';
import { Button } from '@/components/ui/Button';
describe('Button', () => {
it('renders with correct text', () => {
render(<Button>Click me</Button>);
expect(screen.getByText('Click me')).toBeInTheDocument();
});
it('handles click events', async () => {
const handleClick = vi.fn();
const { user } = render(<Button onClick={handleClick}>Click me</Button>);
await user.click(screen.getByText('Click me'));
expect(handleClick).toHaveBeenCalledTimes(1);
});
});
```
### Integration Tests
```typescript
// __tests__/features/upload/FileUpload.test.tsx
import { render, screen, waitFor } from '@testing-library/react';
import { FileUpload } from '@/components/features/upload/FileUpload';
describe('FileUpload', () => {
it('uploads file successfully', async () => {
const mockFile = new File(['test content'], 'test.pdf', {
type: 'application/pdf',
});
render(<FileUpload />);
const input = screen.getByTestId('file-input');
await userEvent.upload(input, mockFile);
await waitFor(() => {
expect(screen.getByText('File uploaded successfully')).toBeInTheDocument();
});
});
});
```
## Performance Targets
### Core Web Vitals
- **LCP (Largest Contentful Paint)**: < 2.5s
- **FID (First Input Delay)**: < 100ms
- **CLS (Cumulative Layout Shift)**: < 0.1
### Bundle Metrics
- **Initial Load**: < 200KB gzipped
- **Main Chunk**: < 100KB gzipped
- **Vendor Chunk**: < 50KB gzipped
### Runtime Performance
- **Time to Interactive**: < 3s
- **Memory Usage**: < 50MB average
- **Bundle Load Time**: < 1s on 3G connection
## Success Metrics
### User Experience
- ✅ **Beautiful Design**: Glassmorphism effects, smooth animations, modern aesthetics
- ✅ **All Mod Cons**: Rich modal system, comprehensive theming, enterprise UX
- ✅ Load time 50% faster than current implementation
- ✅ Error rate < 1% of user interactions
- ✅ Task completion 30% improvement in workflow efficiency
- ✅ 100% WCAG 2.1 AA accessibility compliance
- ✅ **Modal Excellence**: Logger, Help, Settings, Scanner modals with perfect UX
### Design Excellence
- ✅ **Glassmorphism**: Beautiful backdrop blur effects on all modals
- ✅ **Micro-interactions**: Delightful hover states, loading animations, transitions
- ✅ **Responsive Perfection**: Flawless on desktop (1920px+), tablet, and mobile
- ✅ **Dark/Light Mode**: Seamless switching with system preference detection
- ✅ **Typography**: Perfect font hierarchy, readability, and spacing
- ✅ **Color System**: Accessible color palette with proper contrast ratios
### Developer Experience
- ✅ Build time < 30 seconds for incremental builds
- ✅ Test coverage > 80%
- ✅ Zero TypeScript errors
- ✅ Bundle size < 200KB initial load
### Maintainability
- ✅ Component reusability > 70%
- ✅ Zero ESLint errors
- ✅ 100% API documentation
- ✅ Automated testing for all critical paths
## Risk Mitigation
### Technical Risks
- **Large Refactor**: Phase approach with working increments
- **Performance**: Early optimization and monitoring
- **Compatibility**: Progressive enhancement and fallbacks
- **Learning Curve**: Documentation and training materials
### Timeline Risks
- **Scope Creep**: Clear requirements and MVP definition
- **Dependencies**: Lock versions and use stable packages
- **Testing**: Automated testing from day one
- **Reviews**: Regular code reviews and pair programming
## Next Steps - Beauty First Approach
1. **Immediate**: Set up project structure with focus on beautiful tooling
2. **Week 1**: Complete foundation with glassmorphism design system
3. **Week 2**: Implement beautiful authentication and theming system
4. **Week 3**: Port core features with modern, beautiful UX
5. **Week 4**: Add scanner and analysis pages with polish
6. **Week 5**: **Implement ALL MOD CONS modals** (Logger, Help, Settings, Scanner)
7. **Week 6**: Add i18n and final beauty touches
8. **Week 7**: Performance optimization and accessibility
9. **Week 8**: Production deployment with enterprise polish
### Beauty Checklist
- [ ] Glassmorphism effects on all modals and surfaces
- [ ] Smooth animations and micro-interactions throughout
- [ ] Perfect dark/light mode implementation
- [ ] Beautiful modal system with all required functionality
- [ ] Responsive design excellence across all devices
- [ ] Enterprise-grade attention to visual detail
- [ ] Professional typography and spacing systems
## Development Commands
```bash
# Development
npm run dev # Start development server
npm run build # Production build
npm run preview # Preview production build
# Code Quality
npm run lint # ESLint
npm run format # Prettier
npm run type-check # TypeScript
# Testing
npm run test # Run tests
npm run test:coverage # Coverage report
npm run test:ui # Visual test runner
# Documentation
npm run storybook # Component documentation
```
## File Structure Reference
```
frontend-new/
├── src/
│ ├── components/ # Reusable components
│ │ ├── ui/ # Base UI components
│ │ ├── layout/ # Layout components
│ │ ├── features/ # Feature-specific
│ │ └── shared/ # Shared components
│ ├── hooks/ # Custom hooks
│ ├── lib/ # Utilities
│ ├── pages/ # Route components
│ ├── services/ # API services
│ ├── stores/ # Zustand stores
│ ├── types/ # TypeScript types
│ ├── utils/ # Helper functions
│ ├── constants/ # App constants
│ └── styles/ # Global styles
├── public/ # Static assets
├── tests/ # Test utilities
├── docs/ # Documentation
├── package.json
├── tsconfig.json
├── tailwind.config.ts
├── vite.config.ts
└── DEVELOPMENT_PLAN.md # This file
```
## Contact & Support
For questions about this development plan:
- Refer to README.md for project overview
- Check component documentation in Storybook
- Review API documentation in services/
- See testing guidelines in tests/README.md
---
**Last Updated**: December 28, 2025
**Version**: 1.0.0
**Status**: Planning Complete - Ready for Implementation
