Update main.py

main.py

@@ -7,24 +7,27 @@ app = FastAPI()
 API_KEY = "sk-qO9N6kQEEULMWtF4YGVlTTSjIPllEm1h1wfEBzSmnSbxiXwe"
 BASE_URL = "https://fast.typegpt.net"
 
-# Custom public header
+# Public API key for users to use
 PUBLIC_API_KEY = "TypeGPT-Free4ALL"
 
 @app.api_route("/{path:path}", methods=["GET", "POST"])
 async def proxy(request: Request, path: str, x_api_key: str = Header(None)):
+    # Check if the public API key matches the expected value
     if x_api_key != PUBLIC_API_KEY:
-        raise HTTPException(status_code=401, detail="Invalid API key")
+        raise HTTPException(status_code=401, detail="Invalid API key. Please use 'TypeGPT-Free4ALL'.")
 
-    # Reconstruct full URL to target
+    # Reconstruct full URL to target endpoint
     target_url = f"{BASE_URL}/{path}"
 
-    # Prepare headers and body
+    # Prepare headers from the incoming request
     headers = dict(request.headers)
-    headers["Authorization"] = f"Bearer {API_KEY}"
-    headers.pop("host", None)
+    headers["Authorization"] = f"Bearer {API_KEY}"  # Add your secret API key here
+    headers.pop("host", None)  # Remove host header to avoid conflicts
 
+    # Get the body of the request if present
     body = await request.body()
 
+    # Make the actual request to the backend API
     async with httpx.AsyncClient() as client:
         response = await client.request(
             request.method,
@@ -33,4 +36,6 @@ async def proxy(request: Request, path: str, x_api_key: str = Header(None)):
             headers=headers
         )
 
+    # Return the response back to the user
     return response.json()
+