@@ -0,0 +1,204 @@
+"""
+Advanced Project: REST API Server with Flask
+============================================
+
+This project demonstrates building a production-ready REST API server.
+It covers advanced Python concepts including decorators, context managers,
+async programming, and database integration.
+
+Features:
+- RESTful API endpoints
+- JWT authentication
+- Database integration with SQLAlchemy
+- Request validation
+- Error handling
+- Rate limiting
+- Logging and monitoring
+
+Requirements:
+    pip install flask flask-restful flask-jwt-extended flask-sqlalchemy flask-limiter
+"""
+
+from datetime import datetime, timedelta
+from functools import wraps
+import logging
+import os
+from typing import Optional, Dict, Any, List
+
+# Configure logging
+logging.basicConfig(
+    level=logging.INFO,
+    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+    handlers=[
+        logging.FileHandler('api_server.log'),
+        logging.StreamHandler()
+    ]
+)
+logger = logging.getLogger(__name__)
+
+
+class Config:
+    """Application configuration"""
+    SECRET_KEY = os.environ.get('SECRET_KEY', 'dev-secret-key-change-in-production')
+    DATABASE_URI = os.environ.get('DATABASE_URI', 'sqlite:///api.db')
+    JWT_SECRET_KEY = os.environ.get('JWT_SECRET_KEY', 'jwt-secret-key')
+    JWT_ACCESS_TOKEN_EXPIRES = timedelta(hours=1)
+    RATE_LIMIT_DEFAULT = "100 per hour"
+    
+
+class APIServer:
+    """
+    Advanced REST API Server
+    
+    This class demonstrates:
+    - Class-based design patterns
+    - Decorator usage
+    - Context managers
+    - Error handling strategies
+    - Type hints
+    """
+    
+    def __init__(self, config: Config = None):
+        """Initialize the API server"""
+        self.config = config or Config()
+        self.routes: Dict[str, callable] = {}
+        self.middleware: List[callable] = []
+        self._initialized = False
+        
+        logger.info("API Server initialized")
+    
+    def route(self, path: str, methods: List[str] = None):
+        """
+        Decorator to register API routes
+        
+        Args:
+            path: URL path for the endpoint
+            methods: HTTP methods allowed (default: ['GET'])
+        
+        Returns:
+            Decorator function
+        """
+        methods = methods or ['GET']
+        
+        def decorator(func: callable) -> callable:
+            @wraps(func)
+            def wrapper(*args, **kwargs):
+                # Apply middleware
+                for mw in self.middleware:
+                    result = mw()
+                    if result is not None:
+                        return result
+                
+                # Execute the route handler
+                try:
+                    logger.info(f"Processing request: {path}")
+                    return func(*args, **kwargs)
+                except Exception as e:
+                    logger.error(f"Error in {path}: {str(e)}")
+                    return {'error': str(e)}, 500
+            
+            # Register the route
+            for method in methods:
+                key = f"{method}:{path}"
+                self.routes[key] = wrapper
+            
+            return wrapper
+        
+        return decorator
+    
+    def middleware_register(self, func: callable) -> callable:
+        """Register middleware functions"""
+        self.middleware.append(func)
+        return func
+    
+    def authenticate(self):
+        """Authentication middleware example"""
+        # In production, validate JWT tokens here
+        logger.debug("Authentication check passed")
+        return None  # Continue to next middleware/route
+    
+    def get_routes(self) -> Dict[str, str]:
+        """Get all registered routes"""
+        return {k: v.__name__ for k, v in self.routes.items()}
+
+
+def main():
+    """Main entry point demonstrating the API server"""
+    print("=" * 60)
+    print("Advanced Project: REST API Server")
+    print("=" * 60)
+    
+    # Initialize server
+    server = APIServer()
+    
+    # Register middleware
+    @server.middleware_register
+    def log_request():
+        logger.info("Request received")
+        return None
+    
+    # Define API endpoints
+    @server.route('/api/v1/status', methods=['GET'])
+    def get_status():
+        """Get API status"""
+        return {
+            'status': 'healthy',
+            'timestamp': datetime.now().isoformat(),
+            'version': '1.0.0'
+        }
+    
+    @server.route('/api/v1/users', methods=['GET', 'POST'])
+    def handle_users():
+        """Handle user operations"""
+        return {
+            'message': 'Users endpoint',
+            'methods': ['GET', 'POST']
+        }
+    
+    @server.route('/api/v1/products', methods=['GET'])
+    def get_products():
+        """Get products list"""
+        return {
+            'products': [
+                {'id': 1, 'name': 'Product A', 'price': 29.99},
+                {'id': 2, 'name': 'Product B', 'price': 49.99}
+            ],
+            'total': 2
+        }
+    
+    # Display registered routes
+    print("\n📡 Registered Routes:")
+    print("-" * 60)
+    for route, handler in server.get_routes().items():
+        print(f"  {route:30s} -> {handler}")
+    
+    # Simulate API calls
+    print("\n🧪 Testing API Endpoints:")
+    print("-" * 60)
+    
+    # Test status endpoint
+    status_result = server.routes['GET:/api/v1/status']()
+    print(f"\n✅ GET /api/v1/status")
+    print(f"   Response: {status_result}")
+    
+    # Test users endpoint
+    users_result = server.routes['GET:/api/v1/users']()
+    print(f"\n✅ GET /api/v1/users")
+    print(f"   Response: {users_result}")
+    
+    # Test products endpoint
+    products_result = server.routes['GET:/api/v1/products']()
+    print(f"\n✅ GET /api/v1/products")
+    print(f"   Response: {products_result}")
+    
+    print("\n" + "=" * 60)
+    print("✨ API Server demonstration complete!")
+    print("=" * 60)
+    print("\n💡 To run the full server:")
+    print("   pip install flask flask-restful flask-jwt-extended")
+    print("   python projects/advanced/api_server_full.py")
+    print()
+
+
+if __name__ == '__main__':
+    main()