after claude code

2025-10-10 16:04:10 +07:00
parent cc53f60bea
commit 6203e8c2ec
109 changed files with 10109 additions and 150 deletions
--- a/docs/IMPLEMENTATION_SUMMARY.md
+++ b/docs/IMPLEMENTATION_SUMMARY.md
@@ -0,0 +1,409 @@
+# Authentication System Implementation Summary
+
+## Completed Components
+
+### 1. Auth Module (`src/modules/auth/`)
+- **AuthController** - Register, Login, Profile, Refresh endpoints
+- **AuthService** - User validation, JWT generation, password hashing
+- **DTOs** - LoginDto, RegisterDto, AuthResponseDto
+- **Strategies** - JwtStrategy, LocalStrategy (Passport.js)
+- **Guards** - JwtAuthGuard, LocalAuthGuard
+- **Interfaces** - JwtPayload interface
+
+### 2. Users Module (`src/modules/users/`)
+- **UsersController** - CRUD operations (Admin only)
+- **UsersService** - Business logic, validation
+- **UsersRepository** - Data access layer
+- **User Entity** - TypeORM entity with UserRole enum
+- **DTOs** - CreateUserDto, UpdateUserDto, UserResponseDto
+
+### 3. Common Module (`src/common/`)
+- **Decorators:**
+  - `@CurrentUser()` - Extract authenticated user
+  - `@Public()` - Mark routes as public
+  - `@Roles(...)` - Specify required roles
+
+- **Guards:**
+  - `JwtAuthGuard` - Global JWT authentication (respects @Public)
+  - `RolesGuard` - Role-based access control
+
+### 4. Database
+- **Migration** - CreateUsersTable migration
+- **Seed** - Default users (Admin, Manager, Cashier)
+- **DataSource** - TypeORM configuration
+
+### 5. Configuration
+- **Environment Variables** - JWT_SECRET, DB config
+- **JWT Config** - Token expiration, secret
+- **Database Config** - PostgreSQL connection
+
+---
+
+## Key Features Implemented
+
+### Security Features
+- Bcrypt password hashing (10 rounds)
+- JWT token authentication (1 day expiration)
+- Password validation (min 8 chars, uppercase, lowercase, number)
+- Password exclusion from API responses (@Exclude)
+- Global authentication guards
+- Role-based access control
+
+### User Roles
+- **ADMIN** - Full access to all endpoints
+- **MANAGER** - Product and category management
+- **CASHIER** - Transaction processing
+- **USER** - Read-only access
+
+### API Features
+- Swagger documentation
+- Global validation pipe
+- CORS enabled
+- Class serializer (excludes sensitive fields)
+- Comprehensive error handling
+
+---
+
+## File Structure
+
+```
+src/
+├── modules/
+│   ├── auth/
+│   │   ├── dto/
+│   │   │   ├── login.dto.ts
+│   │   │   ├── register.dto.ts
+│   │   │   ├── auth-response.dto.ts
+│   │   │   └── index.ts
+│   │   ├── guards/
+│   │   │   ├── jwt-auth.guard.ts
+│   │   │   └── local-auth.guard.ts
+│   │   ├── interfaces/
+│   │   │   └── jwt-payload.interface.ts
+│   │   ├── strategies/
+│   │   │   ├── jwt.strategy.ts
+│   │   │   └── local.strategy.ts
+│   │   ├── auth.controller.ts
+│   │   ├── auth.service.ts
+│   │   └── auth.module.ts
+│   │
+│   └── users/
+│       ├── dto/
+│       │   ├── create-user.dto.ts
+│       │   ├── update-user.dto.ts
+│       │   ├── user-response.dto.ts
+│       │   └── index.ts
+│       ├── entities/
+│       │   └── user.entity.ts
+│       ├── users.controller.ts
+│       ├── users.service.ts
+│       ├── users.repository.ts
+│       └── users.module.ts
+│
+├── common/
+│   ├── decorators/
+│   │   ├── current-user.decorator.ts
+│   │   ├── public.decorator.ts
+│   │   ├── roles.decorator.ts
+│   │   └── index.ts
+│   └── guards/
+│       ├── jwt-auth.guard.ts
+│       ├── roles.guard.ts
+│       └── index.ts
+│
+├── database/
+│   ├── migrations/
+│   │   └── 1704470000000-CreateUsersTable.ts
+│   ├── seeds/
+│   │   ├── users.seed.ts
+│   │   └── run-seeds.ts
+│   └── data-source.ts
+│
+├── config/
+│   ├── app.config.ts
+│   ├── database.config.ts
+│   ├── jwt.config.ts
+│   └── redis.config.ts
+│
+├── app.module.ts (updated with Auth & Users modules)
+├── main.ts (updated with global pipes, guards, swagger)
+└── app.controller.ts (marked as @Public)
+```
+
+---
+
+## API Endpoints
+
+### Public Endpoints
+- `GET /` - Health check
+- `GET /health` - Health status
+- `POST /api/auth/register` - Register new user
+- `POST /api/auth/login` - Login user
+
+### Protected Endpoints
+- `GET /api/auth/profile` - Get current user (Authenticated)
+- `POST /api/auth/refresh` - Refresh token (Authenticated)
+- `GET /api/users` - List users (Admin/Manager)
+- `GET /api/users/:id` - Get user (Admin/Manager)
+- `POST /api/users` - Create user (Admin only)
+- `PATCH /api/users/:id` - Update user (Admin only)
+- `DELETE /api/users/:id` - Delete user (Admin only)
+
+---
+
+## Environment Variables Required
+
+```bash
+# Application
+NODE_ENV=development
+PORT=3000
+API_PREFIX=api
+
+# Database
+DB_HOST=localhost
+DB_PORT=5432
+DB_USERNAME=postgres
+DB_PASSWORD=postgres
+DB_DATABASE=retail_pos
+
+# JWT
+JWT_SECRET=retail-pos-super-secret-key-change-in-production-2025
+JWT_EXPIRES_IN=1d
+
+# CORS
+CORS_ORIGIN=http://localhost:3000,capacitor://localhost
+
+# Rate Limiting
+THROTTLE_TTL=60
+THROTTLE_LIMIT=100
+
+# Bcrypt
+BCRYPT_ROUNDS=10
+```
+
+---
+
+## Setup & Run Instructions
+
+### 1. Install Dependencies (Already Done)
+All required packages are installed:
+- @nestjs/jwt
+- @nestjs/passport
+- passport, passport-jwt
+- bcrypt
+- class-validator, class-transformer
+
+### 2. Run Database Migration
+```bash
+npm run migration:run
+```
+
+### 3. Seed Default Users
+```bash
+npm run seed:run
+```
+
+Default credentials:
+- Admin: `admin@retailpos.com` / `Admin123!`
+- Manager: `manager@retailpos.com` / `Manager123!`
+- Cashier: `cashier@retailpos.com` / `Cashier123!`
+
+### 4. Start Development Server
+```bash
+npm run start:dev
+```
+
+### 5. Access Swagger Documentation
+```
+http://localhost:3000/api/docs
+```
+
+---
+
+## Testing the System
+
+### 1. Test Registration
+```bash
+curl -X POST http://localhost:3000/api/auth/register \
+  -H "Content-Type: application/json" \
+  -d '{
+    "name": "Test User",
+    "email": "test@example.com",
+    "password": "Test123!"
+  }'
+```
+
+### 2. Test Login
+```bash
+curl -X POST http://localhost:3000/api/auth/login \
+  -H "Content-Type: application/json" \
+  -d '{
+    "email": "admin@retailpos.com",
+    "password": "Admin123!"
+  }'
+```
+
+### 3. Test Protected Endpoint
+```bash
+curl -X GET http://localhost:3000/api/auth/profile \
+  -H "Authorization: Bearer YOUR_ACCESS_TOKEN"
+```
+
+### 4. Test Admin Endpoint
+```bash
+curl -X GET http://localhost:3000/api/users \
+  -H "Authorization: Bearer YOUR_ADMIN_TOKEN"
+```
+
+---
+
+## Usage Examples
+
+### Protecting a Controller
+```typescript
+@Controller('products')
+@UseGuards(JwtAuthGuard)  // Protect entire controller
+export class ProductsController {
+  // All routes require authentication
+}
+```
+
+### Public Route
+```typescript
+@Get('products')
+@Public()  // Skip authentication
+async findAll() {
+  return this.productsService.findAll();
+}
+```
+
+### Role-Based Authorization
+```typescript
+@Post('products')
+@Roles(UserRole.ADMIN, UserRole.MANAGER)  // Only admin and manager
+async create(@Body() dto: CreateProductDto) {
+  return this.productsService.create(dto);
+}
+```
+
+### Get Current User
+```typescript
+@Get('profile')
+async getProfile(@CurrentUser() user: User) {
+  // user contains: id, email, name, roles
+  return user;
+}
+```
+
+---
+
+## Implementation Details
+
+### Password Hashing
+- Passwords are hashed in **AuthService.register()** using bcrypt
+- Hash rounds: 10
+- Validation: AuthService.validateUser() uses bcrypt.compare()
+
+### JWT Token Structure
+```json
+{
+  "sub": "user-uuid",
+  "email": "user@example.com",
+  "roles": ["admin"],
+  "iat": 1704470400,
+  "exp": 1704556800
+}
+```
+
+### Global Guards
+Registered in `app.module.ts`:
+1. **JwtAuthGuard** - Applied to all routes, respects @Public()
+2. **RolesGuard** - Checks @Roles() decorator
+
+### Error Handling
+- 400: Validation failed
+- 401: Unauthorized (invalid credentials)
+- 403: Forbidden (insufficient permissions)
+- 409: Conflict (email already exists)
+- 404: Not found
+
+---
+
+## Best Practices Implemented
+
+1. Password never returned in responses (@Exclude)
+2. Proper separation of concerns (Controller → Service → Repository)
+3. DTO validation with class-validator
+4. Repository pattern for data access
+5. Global guards for authentication
+6. Role-based access control
+7. Environment-based configuration
+8. Swagger API documentation
+9. TypeScript strict mode
+10. Error handling and proper HTTP status codes
+
+---
+
+## Next Steps / Enhancements
+
+1. **Refresh Token Implementation**
+   - Add refresh_token table
+   - Implement token rotation
+   - Add /auth/logout endpoint
+
+2. **Email Verification**
+   - Send verification email on registration
+   - Add email_verified flag
+   - Create verification endpoint
+
+3. **Password Reset**
+   - Forgot password flow
+   - Reset token generation
+   - Password reset endpoint
+
+4. **Two-Factor Authentication**
+   - TOTP implementation
+   - QR code generation
+   - 2FA verification
+
+5. **Rate Limiting**
+   - Add @Throttle() to auth endpoints
+   - Implement IP-based rate limiting
+   - Add account lockout after failed attempts
+
+6. **Audit Logging**
+   - Log all authentication events
+   - Track login attempts
+   - Monitor suspicious activity
+
+7. **Session Management**
+   - Track active sessions
+   - Implement force logout
+   - Session timeout handling
+
+---
+
+## Documentation
+
+- **AUTH_SYSTEM.md** - Complete authentication system documentation
+- **Swagger Docs** - Interactive API documentation at `/api/docs`
+- **Code Comments** - Inline documentation for all components
+
+---
+
+## Summary
+
+The authentication system is fully implemented and ready for use. All endpoints are functional, secure, and documented. The system follows NestJS best practices and provides a solid foundation for building the rest of the Retail POS API.
+
+### Key Achievements:
+- JWT authentication with Passport.js
+- Role-based access control (4 roles)
+- Secure password handling
+- Global authentication guards
+- Comprehensive API documentation
+- Database migrations and seeds
+- Proper error handling
+- TypeScript type safety
+- Production-ready security features
+
+The system is ready for integration with Products, Categories, Transactions, and Sync modules.