# Phase 2 - Authentication System - Implementation Complete

## ✅ COMPLETED TASKS

### 1. Backend Authentication System
- **Admin Model** (`api/models/Admin.php`)
  - Login with password verification
  - Find by email/ID
  - Update last login
  - Failed attempt tracking
  - Account locking (5 failed attempts = 15 min lock)
  - Password change functionality
  - CRUD operations for admin users

- **ActivityLog Model** (`api/models/ActivityLog.php`)
  - Comprehensive activity logging
  - Login/logout logging
  - Application status changes
  - Payment completion tracking
  - Registration tracking
  - IP address and user agent logging

- **AuthService** (`api/services/AuthService.php`)
  - Secure session management
  - Token generation and verification
  - Cookie-based authentication
  - Session expiration handling
  - Role-based access control
  - Password hashing utilities

- **Authentication Middleware** (`api/middleware/AuthMiddleware.php`)
  - Require authentication
  - Require admin role
  - Require super admin role
  - Optional authentication
  - Role checking utilities

- **Validation Middleware** (`api/middleware/ValidationMiddleware.php`)
  - Required field validation
  - Email validation
  - Password strength validation
  - Date validation
  - Input sanitization
  - Login data validation

- **Rate Limit Middleware** (`api/middleware/RateLimitMiddleware.php`)
  - Login rate limiting (5 attempts per 15 minutes)
  - API rate limiting (100 requests per hour)
  - Account blocking (30 minutes on excessive attempts)
  - IP-based tracking
  - Automatic cleanup

### 2. API Routes
- **Authentication Routes** (`api/routes/auth.php`)
  - `POST /api/auth.php?action=login` - Admin login
  - `POST /api/auth.php?action=logout` - Admin logout
  - `GET /api/auth.php?action=me` - Get current admin
  - `GET /api/auth.php?action=verify` - Verify token

### 3. Frontend Integration
- **API Client** (`src/lib/api.ts`)
  - TypeScript API client
  - Automatic token handling
  - Cookie management
  - Error handling
  - Type-safe responses

- **Updated Login Page** (`src/routes/admin.login.tsx`)
  - Replaced demo authentication with real API calls
  - Maintained existing UI and styling
  - Error handling for failed login

- **Updated Dashboard** (`src/routes/admin.dashboard.tsx`)
  - Replaced demo logout with real API calls
  - Maintained existing UI and functionality

- **Updated Application Store** (`src/lib/applications-store.ts`)
  - Exported real API functions
  - Kept demo functions as fallback
  - Backward compatibility maintained

### 4. Configuration
- **Environment Files**
  - Updated `.env.example` for frontend
  - Created `api/.env.example` for backend
  - Database configuration
  - JWT configuration
  - Email configuration
  - Paystack configuration

### 5. Testing
- **Test Script** (`api/test-auth.php`)
  - Database connection test
  - Admin table verification
  - Default admin check/creation
  - Authentication test
  - Activity logging test
  - Session service test

## 🔧 SETUP INSTRUCTIONS

### 1. Database Setup
```bash
# Create database
mysql -u root -p -e "CREATE DATABASE energies_school CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;"

# Import schema
mysql -u root -p energies_school < api/database/schema.sql
```

### 2. Configure Backend
```bash
# Copy environment file
cp api/.env.example api/.env

# Edit api/.env with your credentials
# - Database credentials
# - JWT secret (generate a long random string)
# - Email settings
# - Paystack keys
```

### 3. Test Authentication
```bash
# Run test script
php api/test-auth.php
```

### 4. Configure Frontend
```bash
# Copy environment file
cp .env.example .env

# Edit .env if needed (VITE_API_URL=/api is default)
```

### 5. Start Development Server
```bash
# Start frontend
npm run dev

# Test API endpoints
curl -X POST http://localhost:5173/api/auth.php?action=login \
  -H "Content-Type: application/json" \
  -d '{"email":"admin@revlinks.ng","password":"admin123"}'
```

## 🔐 SECURITY FEATURES

### Authentication Security
- Password hashing with `password_hash()` (bcrypt)
- Secure session management with httpOnly cookies
- Token-based authentication for API requests
- Automatic session expiration (24 hours default)
- Failed login attempt tracking
- Account locking after excessive failed attempts

### Request Security
- Input validation and sanitization
- Prepared statements for all database queries
- SQL injection prevention
- XSS protection via output escaping
- CSRF protection via SameSite cookies
- Rate limiting for login attempts
- Rate limiting for API requests

### Logging & Auditing
- All login attempts (success/failure)
- All logout events
- Password changes
- Application status changes
- Registration code generation
- Payment completion
- IP address tracking
- User agent logging

## 📋 API ENDPOINTS

### Authentication
- **POST** `/api/auth.php?action=login`
  - Body: `{ "email": "admin@revlinks.ng", "password": "admin123" }`
  - Response: `{ "success": true, "data": { "admin": {...}, "token": "..." } }`

- **POST** `/api/auth.php?action=logout`
  - Headers: `Authorization: Bearer {token}`
  - Response: `{ "success": true, "message": "Logout successful" }`

- **GET** `/api/auth.php?action=me`
  - Headers: `Authorization: Bearer {token}`
  - Response: `{ "success": true, "data": { "admin": {...} } }`

- **GET** `/api/auth.php?action=verify`
  - Headers: `Authorization: Bearer {token}`
  - Response: `{ "success": true, "data": { "valid": true, "admin": {...} } }`

## 👤 DEFAULT ADMIN CREDENTIALS

After importing the schema, a default admin is created:
- **Email**: `admin@revlinks.ng`
- **Password**: `admin123`
- **Role**: `super_admin`

⚠️ **IMPORTANT**: Change this password immediately after first login!

## 🎯 READY FOR PHASE 3

Phase 2 authentication system is complete and ready for:
- Phase 3: Application CRUD operations
- Phase 4: Registration code system and email integration
- Phase 5: Paystack payment integration

## 📝 NOTES

- The frontend UI remains unchanged
- All existing functionality preserved
- Demo functions kept as fallback
- Session management uses secure httpOnly cookies
- JWT tokens stored in cookies for API requests
- Rate limiting prevents brute force attacks
- Comprehensive logging for security auditing
- Compatible with standard cPanel hosting
- PHP 8+ required
- MySQL with PDO required

## 🐛 TROUBLESHOOTING

### Database Connection Issues
- Check database credentials in `api/.env`
- Ensure MySQL server is running
- Verify database `energies_school` exists
- Check user permissions

### Authentication Issues
- Run `php api/test-auth.php` to diagnose
- Check error logs in `api/logs/`
- Verify admin account exists and is active
- Check if account is locked (wait 15 minutes)

### Cookie Issues
- Ensure cookies are enabled in browser
- Check browser console for cookie errors
- Verify SameSite cookie settings
- Check if domain matches API URL

### Rate Limiting Issues
- Wait for rate limit to expire
- Clear rate limit file: `rm api/logs/rate_limit.json`
- Check IP address detection
- Verify time synchronization

## ✅ PHASE 2 COMPLETE

Authentication system is fully implemented and tested. Ready for Phase 3 approval.
