docs: Add comprehensive frontend documentation and next steps guide

2025-11-06 17:11:01 +01:00 · 2025-11-06 17:11:01 +01:00 · cef85dd1a1
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+# E-Voting Frontend - Next Steps
+
+## Current Status
+
+The frontend has been completely rebuilt on the **UI branch** with:
+- ✅ Next.js 15 with TypeScript
+- ✅ shadcn/ui component library
+- ✅ Custom dark theme (#e8704b accent)
+- ✅ Complete dashboard system (7 pages)
+- ✅ Authentication pages (login/register)
+- ✅ Responsive design
+- ✅ Build passes all linting and type checks
+
+## Immediate Next Steps
+
+### 1. Backend API Integration (Priority: HIGH)
+
+**Location**: `frontend/` pages and components
+
+**What to do**:
+- Replace mock data with actual API calls
+- Implement authentication flow (login/logout)
+- Fetch active, upcoming, and historical votes
+- Connect vote submission endpoints
+- Handle API errors with user-friendly messages
+
+**Files to modify**:
+- `app/auth/login/page.tsx` - Connect to `/api/auth/login`
+- `app/auth/register/page.tsx` - Connect to `/api/auth/register`
+- `app/dashboard/page.tsx` - Fetch stats and active votes
+- `app/dashboard/votes/*/page.tsx` - Fetch vote data by category
+- `app/dashboard/profile/page.tsx` - Fetch and update user profile
+
+**Suggested approach**:
+```tsx
+// Create API client helper
+// lib/api.ts
+export async function loginUser(email: string, password: string) {
+  const response = await fetch("/api/auth/login", {
+    method: "POST",
+    body: JSON.stringify({ email, password }),
+  })
+  return response.json()
+}
+```
+
+### 2. Authentication Context (Priority: HIGH)
+
+**What to do**:
+- Create AuthContext for global user state
+- Manage authentication tokens
+- Protect dashboard routes (redirect to login if not authenticated)
+- Persist user session across page reloads
+
+**Suggested approach**:
+- Create `app/providers.tsx` with AuthContext provider
+- Create hook: `useAuth()` for easy access
+- Add route protection with middleware or ProtectedRoute component
+- Store tokens in secure HTTP-only cookies (backend should set these)
+
+### 3. Form Validation (Priority: MEDIUM)
+
+**What to do**:
+- Add Zod schema validation
+- Implement React Hook Form for all forms
+- Show field-level error messages
+- Add password strength indicator for registration
+
+**Install**:
+```bash
+npm install react-hook-form zod @hookform/resolvers
+```
+
+**Example**:
+```tsx
+import { useForm } from "react-hook-form"
+import { zodResolver } from "@hookform/resolvers/zod"
+import { z } from "zod"
+
+const schema = z.object({
+  email: z.string().email("Invalid email"),
+  password: z.string().min(8, "Password too short"),
+})
+
+export default function LoginPage() {
+  const { register, handleSubmit, formState: { errors } } = useForm({
+    resolver: zodResolver(schema),
+  })
+
+  // ...
+}
+```
+
+### 4. Error Handling & Loading States (Priority: MEDIUM)
+
+**What to do**:
+- Add try-catch blocks to API calls
+- Show loading spinners while fetching
+- Display error messages to users
+- Add error boundary component
+
+**Files to enhance**:
+- All pages that fetch data
+- API integration functions
+- Form submission handlers
+
+### 5. Additional Pages to Create (Priority: MEDIUM)
+
+**Voting Page** (`/dashboard/votes/active/[id]`)
+- Display election details
+- Show all candidates with descriptions
+- Implement voting interface
+- Confirmation before final submission
+- Success message with receipt/verification
+
+**Election Results Page** (`/dashboard/votes/active/[id]/results`)
+- Display results with charts
+- Show participation rate
+- Display candidate results (percentages and vote counts)
+- Timeline of vote counting
+
+**Profile Edit Modal/Page**
+- Allow editing each field individually
+- Password change with current password verification
+- Two-factor authentication setup
+
+**404 & Error Pages**
+- Custom error page (`app/error.tsx`)
+- Custom 404 page (`app/not-found.tsx`)
+- Global error boundary
+
+### 6. Testing (Priority: LOW)
+
+**What to do**:
+- Add unit tests with Jest
+- Add component tests with React Testing Library
+- Add E2E tests with Cypress or Playwright
+
+**Install**:
+```bash
+npm install --save-dev jest @testing-library/react @testing-library/jest-dom
+npm install --save-dev cypress
+```
+
+## Nice-to-Have Enhancements
+
+### Performance
+- [ ] Image optimization with `next/image`
+- [ ] Add service worker for offline support (PWA)
+- [ ] Implement caching strategies
+- [ ] Code splitting optimization
+
+### UX Improvements
+- [ ] Toast notifications for user feedback
+- [ ] Skeleton loaders while fetching data
+- [ ] Animations and transitions
+- [ ] Dark/light mode toggle
+- [ ] Internationalization (i18n) for French/English
+
+### Features
+- [ ] Email notifications for upcoming votes
+- [ ] Vote reminders
+- [ ] Export vote history as PDF
+- [ ] Search functionality for elections
+- [ ] Favorites/bookmarks for elections
+- [ ] Real-time participation updates
+
+## Branch Information
+
+- **Current Branch**: `UI` (contains new Next.js frontend)
+- **Main Branch**: `paul/evoting` (original development branch)
+- **Backup Branch**: `backup` (contains old React CRA frontend)
+- **Backup Location**: `.backups/frontend-old/` (in working directory)
+
+## File References
+
+### Key Files to Review
+
+**Configuration**:
+- `frontend/package.json` - Dependencies and scripts
+- `frontend/tailwind.config.ts` - Theme configuration
+- `frontend/tsconfig.json` - TypeScript settings
+- `frontend/.eslintrc.json` - Linting rules
+
+**Core Pages**:
+- `frontend/app/page.tsx` - Home/landing page
+- `frontend/app/auth/login/page.tsx` - Login
+- `frontend/app/auth/register/page.tsx` - Registration
+- `frontend/app/dashboard/layout.tsx` - Dashboard layout with sidebar
+- `frontend/app/dashboard/page.tsx` - Dashboard home
+
+**Components**:
+- `frontend/components/ui/button.tsx` - Button component
+- `frontend/components/ui/card.tsx` - Card component
+- `frontend/components/ui/input.tsx` - Input component
+- `frontend/components/ui/label.tsx` - Label component
+
+### Documentation Files
+
+- `frontend/FRONTEND_NEXTJS_GUIDE.md` - Complete frontend guide (just created)
+- `frontend/README.md` - Project overview (in .backups/frontend-old/)
+- `.claude/NEXT_STEPS.md` - This file
+
+## Git Commands Reference
+
+```bash
+# Switch to UI branch
+git checkout UI
+
+# View changes on this branch
+git log --oneline main..UI
+
+# View specific commit
+git show 14eff8d
+
+# Merge UI branch to main
+git checkout main
+git merge UI
+
+# Create new feature branch from UI
+git checkout -b feature/api-integration
+```
+
+## Development Checklist
+
+- [ ] Backend API endpoints are documented
+- [ ] Frontend team has API documentation
+- [ ] Authentication flow is clear (token handling, refresh, logout)
+- [ ] Error codes from backend are documented
+- [ ] CORS is configured correctly
+- [ ] Rate limiting is in place
+- [ ] Logging is implemented for debugging
+- [ ] Security headers are set
+
+## Questions to Answer Before Starting Integration
+
+1. **Authentication**:
+   - How are tokens managed? (JWT, session-based, other?)
+   - Where are tokens stored? (localStorage, cookie, memory?)
+   - What's the refresh token flow?
+   - How long do tokens last?
+
+2. **API**:
+   - What's the base URL for API calls?
+   - Are there any authentication headers required?
+   - What error format does the backend use?
+   - What's the pagination strategy?
+
+3. **Voting**:
+   - How is the vote submitted? (single request or multi-step?)
+   - Is there a signature verification?
+   - Can votes be changed/revoked?
+   - How is vote secrecy maintained?
+
+4. **Data**:
+   - What format are election results in?
+   - How is participation data calculated?
+   - What user information should be displayed?
+   - How should archived data be filtered?
+
+## Support & Resources
+
+- **Backend API Docs**: Check with backend team
+- **Frontend Docs**: See `frontend/FRONTEND_NEXTJS_GUIDE.md`
+- **Previous Work**: Check git history on `UI` branch
+- **Component Library**: https://ui.shadcn.com/
+
+---
+
+**Branch**: UI
+**Last Updated**: 2025-11-06
+**Frontend Status**: ✅ Complete & Ready for Integration
+**Next Phase**: Backend API Integration
--- a/e-voting-system/frontend/FRONTEND_NEXTJS_GUIDE.md
+++ b/e-voting-system/frontend/FRONTEND_NEXTJS_GUIDE.md
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+# E-Voting Frontend - Next.js + ShadCN/UI Guide
+
+## Overview
+
+The E-Voting frontend has been completely rebuilt using **Next.js 15** and **shadcn/ui** components. This provides a modern, type-safe, and fully responsive user interface for the e-voting platform.
+
+### Key Technologies
+
+- **Framework**: Next.js 15 with App Router
+- **UI Components**: shadcn/ui (Radix UI + Tailwind CSS)
+- **Styling**: Tailwind CSS with custom dark theme
+- **Language**: TypeScript with strict type checking
+- **Icons**: Lucide React
+- **Forms**: React Hook Form (ready for integration)
+
+## Project Structure
+
+```
+frontend/
+├── app/                          # Next.js App Router pages
+│   ├── layout.tsx               # Root layout with metadata
+│   ├── page.tsx                 # Home page (landing)
+│   ├── globals.css              # Global styles and CSS variables
+│   ├── auth/
+│   │   ├── login/page.tsx       # Login page
+│   │   └── register/page.tsx    # Registration page
+│   └── dashboard/
+│       ├── layout.tsx           # Dashboard layout with sidebar
+│       ├── page.tsx             # Dashboard home
+│       ├── profile/page.tsx     # User profile management
+│       └── votes/
+│           ├── active/page.tsx       # Active votes
+│           ├── upcoming/page.tsx     # Upcoming votes
+│           ├── history/page.tsx      # Vote history
+│           └── archives/page.tsx     # Archived votes
+├── components/
+│   └── ui/                       # Reusable UI components
+│       ├── button.tsx           # Button component with variants
+│       ├── card.tsx             # Card component with subcomponents
+│       ├── input.tsx            # Input field component
+│       ├── label.tsx            # Label component
+│       └── index.ts             # Component exports
+├── lib/
+│   └── utils.ts                 # Utility functions (cn helper)
+├── public/                       # Static assets
+├── styles/                       # Additional stylesheets
+├── package.json                 # Dependencies and scripts
+├── tsconfig.json               # TypeScript configuration
+├── tailwind.config.ts          # Tailwind CSS configuration
+├── next.config.js              # Next.js configuration
+└── postcss.config.js           # PostCSS configuration
+```
+
+## Running the Project
+
+### Development
+
+```bash
+cd frontend
+npm install
+npm run dev
+```
+
+The application will be available at `http://localhost:3000`.
+
+### Production Build
+
+```bash
+npm run build
+npm start
+```
+
+### Linting
+
+```bash
+npm run lint
+```
+
+## Pages Overview
+
+### Public Pages
+
+#### 1. Home Page (`/`)
+- Hero section with call-to-action
+- Stats section (1000+ voters, 50+ elections, 99.9% security)
+- Features section highlighting key benefits
+- Navigation to login/register
+- Responsive design for mobile
+
+#### 2. Login Page (`/auth/login`)
+- Email and password input fields
+- Error display with icons
+- Loading state during submission
+- Link to registration page
+- Feature highlights illustration
+
+#### 3. Register Page (`/auth/register`)
+- First name, last name, email, password fields
+- Password confirmation validation
+- Success/error state handling
+- Feature highlights on form side
+
+### Protected Pages (Dashboard)
+
+#### 4. Dashboard Home (`/dashboard`)
+- Welcome section with user name
+- Stats cards (active votes, upcoming, past, archives)
+- Active votes carousel
+- Quick action buttons
+- Responsive grid layout
+
+#### 5. Active Votes (`/dashboard/votes/active`)
+- List of ongoing elections
+- Progress bars showing participation
+- Vote count and candidate information
+- Filter by category (National, Local, Regional)
+- "Participate" button for each vote
+
+#### 6. Upcoming Votes (`/dashboard/votes/upcoming`)
+- Timeline view of future elections
+- Importance indicators (color-coded)
+- Start date and time for each vote
+- "Notify me" button for reminders
+- Category and importance filtering
+
+#### 7. Vote History (`/dashboard/votes/history`)
+- Past elections with results
+- Participation indicator (checkmark if voted)
+- Stats: total voted, participation rate
+- Results preview (winner and participation %)
+- Filterable by participation status
+
+#### 8. Archives (`/dashboard/votes/archives`)
+- Historical elections organized by year
+- Document count per election
+- Download and consult options
+- Year filtering
+- Grid layout for browsing
+
+#### 9. Profile Page (`/dashboard/profile`)
+- Personal information form
+- Address and contact details
+- Password change section
+- Two-factor authentication status
+- Session management
+- Account deletion option
+
+## Design System
+
+### Color Palette
+
+The custom dark theme uses CSS variables defined in `app/globals.css`:
+
+```css
+--background: 23 23 23 (rgb(23, 23, 23))
+--foreground: 224 224 224 (rgb(224, 224, 224))
+--primary: 232 112 75 (rgb(232, 112, 75)) [Accent]
+--secondary: 163 163 163
+--muted: 115 115 115
+--border: 82 82 82
+--input: 82 82 82
+--card: 39 39 39
+```
+
+### Component Patterns
+
+#### Button Component
+```tsx
+import { Button } from "@/components/ui/button"
+
+// Default variant
+<Button>Submit</Button>
+
+// Outline variant
+<Button variant="outline">Cancel</Button>
+
+// Destructive variant
+<Button variant="destructive">Delete</Button>
+
+// Ghost variant (no background)
+<Button variant="ghost">Link</Button>
+
+// Sizes
+<Button size="sm">Small</Button>
+<Button size="lg">Large</Button>
+```
+
+#### Card Component
+```tsx
+import { Card, CardHeader, CardTitle, CardDescription, CardContent } from "@/components/ui/card"
+
+<Card>
+  <CardHeader>
+    <CardTitle>Title</CardTitle>
+    <CardDescription>Description</CardDescription>
+  </CardHeader>
+  <CardContent>
+    {/* Content */}
+  </CardContent>
+</Card>
+```
+
+#### Input Component
+```tsx
+import { Input } from "@/components/ui/input"
+
+<Input
+  type="email"
+  placeholder="Enter email"
+  value={value}
+  onChange={handleChange}
+/>
+```
+
+#### Label Component
+```tsx
+import { Label } from "@/components/ui/label"
+
+<Label htmlFor="email">Email Address</Label>
+<Input id="email" type="email" />
+```
+
+## State Management
+
+Currently, all state is managed with React hooks (`useState`). For more complex state management, consider:
+
+- **Context API** for global state (authentication, user preferences)
+- **TanStack Query** for server state (API calls, caching)
+- **Zustand** for client state (if scaling up)
+
+## Styling Guide
+
+### Using Tailwind Classes
+
+All styling uses Tailwind CSS utility classes. Custom CSS is avoided.
+
+```tsx
+<div className="flex items-center justify-between p-4 rounded-lg bg-card border border-border hover:border-accent transition-colors">
+  <span className="text-sm font-medium text-foreground">Label</span>
+  <button className="text-accent hover:text-accent/80 transition-colors">Action</button>
+</div>
+```
+
+### Responsive Design
+
+Use Tailwind's responsive prefixes:
+
+```tsx
+<div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
+  {/* Responsive grid */}
+</div>
+```
+
+## Adding New Pages
+
+### Create a new page
+
+1. Create a new file in `app/[section]/[page]/page.tsx`
+2. Make it a "use client" component if it needs interactivity
+3. Use existing components from `components/ui/`
+4. Follow the naming conventions and styling patterns
+
+Example:
+
+```tsx
+"use client"
+
+import { Button } from "@/components/ui/button"
+import { Card, CardHeader, CardTitle } from "@/components/ui/card"
+
+export default function NewPage() {
+  return (
+    <div className="space-y-8">
+      <h1 className="text-3xl font-bold">New Page Title</h1>
+
+      <Card>
+        <CardHeader>
+          <CardTitle>Card Title</CardTitle>
+        </CardHeader>
+      </Card>
+
+      <Button>Action</Button>
+    </div>
+  )
+}
+```
+
+## Adding New Components
+
+### Create a new UI component
+
+1. Create `components/ui/component-name.tsx`
+2. Export from `components/ui/index.ts`
+3. Use Radix UI primitives as base if available
+4. Style with Tailwind CSS
+5. Include proper TypeScript types
+
+Example:
+
+```tsx
+import React from "react"
+
+export interface CustomButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> {
+  variant?: "default" | "outline"
+  size?: "sm" | "md" | "lg"
+}
+
+export const CustomButton = React.forwardRef<HTMLButtonElement, CustomButtonProps>(
+  ({ className, variant = "default", size = "md", ...props }, ref) => {
+    return (
+      <button
+        ref={ref}
+        className={`px-4 py-2 rounded-lg font-medium transition-colors ${
+          variant === "outline" ? "border border-border hover:bg-muted" : "bg-accent text-white hover:bg-accent/90"
+        }`}
+        {...props}
+      />
+    )
+  }
+)
+
+CustomButton.displayName = "CustomButton"
+```
+
+## Integration with Backend
+
+The frontend is ready to integrate with the E-Voting backend API. Currently, API calls are commented out or return mock data.
+
+### API Endpoints to Connect
+
+#### Authentication
+- `POST /api/auth/register` - User registration
+- `POST /api/auth/login` - User login
+- `POST /api/auth/logout` - User logout
+- `POST /api/auth/refresh` - Refresh authentication token
+
+#### Votes
+- `GET /api/votes/active` - Get active votes
+- `GET /api/votes/upcoming` - Get upcoming votes
+- `GET /api/votes/:id` - Get vote details
+- `POST /api/votes/:id/participate` - Submit vote
+- `GET /api/votes/history` - Get vote history
+- `GET /api/votes/archives` - Get archived votes
+
+#### User
+- `GET /api/user/profile` - Get user profile
+- `PUT /api/user/profile` - Update profile
+- `PUT /api/user/password` - Change password
+- `GET /api/user/sessions` - Get active sessions
+
+### Example API Integration
+
+```tsx
+const [data, setData] = useState(null)
+const [loading, setLoading] = useState(false)
+const [error, setError] = useState(null)
+
+useEffect(() => {
+  const fetchData = async () => {
+    setLoading(true)
+    try {
+      const response = await fetch("/api/votes/active")
+      const result = await response.json()
+      setData(result)
+    } catch (err) {
+      setError(err)
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  fetchData()
+}, [])
+```
+
+## Accessibility (a11y)
+
+All components follow WCAG 2.1 guidelines:
+
+- Proper heading hierarchy
+- ARIA labels on form inputs
+- Keyboard navigation support
+- Color contrast ratios > 4.5:1
+- Focus indicators visible
+
+## Performance Optimization
+
+- **Code Splitting**: Next.js automatically splits code at route boundaries
+- **Image Optimization**: Use `next/image` for optimized images
+- **Font Optimization**: System fonts used by default (fast loading)
+- **CSS-in-JS**: Tailwind generates minimal CSS bundle
+
+Current build size: ~117 kB First Load JS (shared by all pages)
+
+## Troubleshooting
+
+### Common Issues
+
+**Build fails with TypeScript errors:**
+```bash
+npm run build -- --no-lint
+```
+
+**Dependencies conflict:**
+```bash
+npm install --legacy-peer-deps
+```
+
+**Cache issues:**
+```bash
+rm -rf .next node_modules
+npm install
+npm run build
+```
+
+## Next Steps
+
+1. **API Integration**: Connect authentication and vote endpoints
+2. **State Management**: Implement user session management with Context
+3. **Error Handling**: Add error boundaries and error pages
+4. **Loading States**: Show skeleton screens during data fetching
+5. **Validation**: Implement form validation with Zod + React Hook Form
+6. **Testing**: Add unit tests with Jest and E2E tests with Cypress
+7. **Analytics**: Integrate analytics tracking
+8. **PWA**: Add PWA capabilities for offline support
+
+## Resources
+
+- [Next.js Documentation](https://nextjs.org/docs)
+- [shadcn/ui Documentation](https://ui.shadcn.com)
+- [Tailwind CSS Documentation](https://tailwindcss.com/docs)
+- [Radix UI Documentation](https://www.radix-ui.com)
+- [TypeScript Documentation](https://www.typescriptlang.org/docs)
+
+## Support
+
+For questions or issues related to the frontend, refer to:
+- Commit history: `git log --oneline`
+- Recent changes: `git diff main..UI`
+- Build output: Check terminal after `npm run build`