test: lazy initiation of catalogue

api_service.py

@@ -1,5 +1,4 @@
-"""
+"""Lightweight Python API service for signature validation
-Lightweight Python API service for signature validation
 This can run independently to support the PHP application
 """
 
@@ -22,15 +21,22 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-# Initialize catalogue for signature validation
+# Catalogue is expensive to initialize at import time; instantiate lazily
-cat = catalogue.Catalogue()
+cat = None
+
+
+def _get_catalogue():
+    global cat
+    if cat is None:
+        cat = catalogue.Catalogue()
+    return cat
 
 
 @app.get("/api/validate-signature")
 async def validate_signature(signature: str = Query(...)):
     """Validate a book signature and return total pages"""
     try:
-        book_result = cat.get_book_with_data(signature)
+        book_result = _get_catalogue().get_book_with_data(signature)
         if book_result and hasattr(book_result, "pages") and book_result.pages:
             # Try to extract numeric page count
             pages_str = str(book_result.pages)
@@ -39,7 +45,7 @@ async def validate_signature(signature: str = Query(...)):
             if match:
                 total_pages = int(match.group(1))
                 return JSONResponse(
-                    {"valid": True, "total_pages": total_pages, "signature": signature}
+                    {"valid": True, "total_pages": total_pages, "signature": signature},
                 )
 
         return JSONResponse(
@@ -47,13 +53,13 @@ async def validate_signature(signature: str = Query(...)):
                 "valid": False,
                 "error": "Signatur nicht gefunden oder keine Seitenzahl verfügbar",
                 "signature": signature,
-            }
+            },
         )
     except Exception as e:
         return JSONResponse(
             {
                 "valid": False,
-                "error": f"Fehler bei der Validierung: {str(e)}",
+                "error": f"Fehler bei der Validierung: {e!s}",
                 "signature": signature,
             },
             status_code=500,