commit AI suggested performance enhancements

src/backend/threads_availchecker.py

@@ -1,5 +1,4 @@
 import sys
-import time
 
 # from src.transformers import RDS_AVAIL_DATA
 import loguru
@@ -23,7 +22,11 @@ class AvailChecker(QThread):
     updateProgress = Signal(int, int)
 
     def __init__(
-        self, links: list = None, appnumber: int = None, parent=None, books=list[dict]
+        self,
+        links: list[str] | None = None,
+        appnumber: int | None = None,
+        parent=None,
+        books: list[dict] | None = None,
     ):
         if links is None:
             links = []
@@ -38,11 +41,13 @@ class AvailChecker(QThread):
         )
         self.links = links
         self.appnumber = appnumber
-        self.books = books
+        self.books = books or []
         log.info(
             f"Started worker with appnumber: {self.appnumber} and links: {self.links} and {len(self.books)} books..."
         )
-        time.sleep(2)
+        # Pre-create reusable request and transformer to avoid per-item overhead
+        self._request = WebRequest().set_apparat(self.appnumber)
+        self._rds_transformer = BibTextTransformer("RDS")
 
     def run(self):
         self.db = Database()
@@ -50,9 +55,8 @@ class AvailChecker(QThread):
         count = 0
         for link in self.links:
             log.info("Processing entry: " + str(link))
-            data = WebRequest().set_apparat(self.appnumber).get_ppn(link).get_data()
-            transformer = BibTextTransformer("RDS")
-            rds = transformer.get_data(data).return_data("rds_availability")
+            data = self._request.get_ppn(link).get_data()
+            rds = self._rds_transformer.get_data(data).return_data("rds_availability")
 
             book_id = None
             if not rds or not rds.items: