Refactoring code for modular approach

middleware/decorators.py

@@ -0,0 +1,29 @@
+# middleware/decorators.py
+from functools import wraps
+from fastapi import HTTPException
+from middleware.rate_limiter import RateLimiter
+
+# Initialize rate limiter instance
+rate_limiter = RateLimiter()
+
+
+def rate_limit(max_requests: int = 100, window_seconds: int = 3600):
+    """Rate limiting decorator for FastAPI endpoints"""
+
+    def decorator(func):
+        @wraps(func)
+        async def wrapper(*args, **kwargs):
+            # Extract client IP or user ID for rate limiting
+            client_id = "anonymous"  # In production, extract from request
+
+            if not rate_limiter.allow_request(client_id, max_requests, window_seconds):
+                raise HTTPException(
+                    status_code=429,
+                    detail="Rate limit exceeded"
+                )
+
+            return await func(*args, **kwargs)
+
+        return wrapper
+
+    return decorator