Fix a crash when fetching images during auto-tag in the gui

comictaggerlib/coverimagewidget.py

@@ -236,7 +236,8 @@ class CoverImageWidget(QtWidgets.QWidget):
         self.load_default()
         self.cover_fetcher = ImageFetcher(self.cache_folder)
         ImageFetcher.image_fetch_complete = self.image_fetch_complete.emit
-        self.cover_fetcher.fetch(self.url_list[self.imageIndex])
+        if data := self.cover_fetcher.fetch(self.url_list[self.imageIndex]):
+            self.cover_remote_fetch_complete(self.url_list[self.imageIndex], data)
 
     # called when the image is done loading from internet
     def cover_remote_fetch_complete(self, url: str, image_data: bytes) -> None:

comictaggerlib/imagefetcher.py

@@ -70,6 +70,7 @@ class ImageFetcher:
         os.unlink(self.db_file)
         if os.path.isdir(self.cache_folder):
             shutil.rmtree(self.cache_folder)
+        self.cache_folder.mkdir(parents=True, exist_ok=True)
 
     def fetch(self, url: str, blocking: bool = False) -> bytes:
         """
@@ -93,7 +94,6 @@ class ImageFetcher:
                 except Exception as e:
                     logger.exception("Fetching url failed: %s")
                     raise ImageFetcherException("Network Error!") from e
-            ImageFetcher.image_fetch_complete(url, image_data)
             return image_data
 
         if self.qt_available:
@@ -130,18 +130,14 @@ class ImageFetcher:
             shutil.rmtree(self.cache_folder)
         os.makedirs(self.cache_folder)
 
-        con = lite.connect(self.db_file)
-
         # create tables
-        with con:
+        with lite.connect(self.db_file) as con:
             cur = con.cursor()
 
             cur.execute("CREATE TABLE Images(url TEXT,filename TEXT,timestamp TEXT,PRIMARY KEY (url))")
 
     def add_image_to_cache(self, url: str, image_data: bytes | QtCore.QByteArray) -> None:
-        con = lite.connect(self.db_file)
-
-        with con:
+        with lite.connect(self.db_file) as con:
             cur = con.cursor()
 
             timestamp = datetime.datetime.now()
@@ -153,8 +149,7 @@ class ImageFetcher:
             cur.execute("INSERT or REPLACE INTO Images VALUES(?, ?, ?)", (url, filename, timestamp))
 
     def get_image_from_cache(self, url: str) -> bytes:
-        con = lite.connect(self.db_file)
-        with con:
+        with lite.connect(self.db_file) as con:
             cur = con.cursor()
 
             cur.execute("SELECT filename FROM Images WHERE url=?", [url])

comictaggerlib/settingswindow.py

@@ -20,6 +20,7 @@ import logging
 import os
 import pathlib
 import platform
+import shutil
 from typing import Any, cast
 
 import settngs
@@ -30,11 +31,8 @@ from comicapi import utils
 from comicapi.genericmetadata import md_test
 from comictaggerlib import ctsettings
 from comictaggerlib.ctsettings import ct_ns
-from comictaggerlib.ctversion import version
 from comictaggerlib.filerenamer import FileRenamer, Replacement, Replacements
-from comictaggerlib.imagefetcher import ImageFetcher
 from comictaggerlib.ui import ui_path
-from comictalker.comiccacher import ComicCacher
 from comictalker.comictalker import ComicTalker
 
 logger = logging.getLogger(__name__)
@@ -552,8 +550,8 @@ class SettingsWindow(QtWidgets.QDialog):
         self.select_file(self.leRarExePath, "RAR")
 
     def clear_cache(self) -> None:
-        ImageFetcher(self.config[0].Runtime_Options__config.user_cache_dir).clear_cache()
-        ComicCacher(self.config[0].Runtime_Options__config.user_cache_dir, version).clear_cache()
+        shutil.rmtree(self.config[0].Runtime_Options__config.user_cache_dir, ignore_errors=True)
+        self.config[0].Runtime_Options__config.user_cache_dir.mkdir(parents=True, exist_ok=True)
         QtWidgets.QMessageBox.information(self, self.name, "Cache has been cleared.")
 
     def reset_settings(self) -> None: