Remove unused function

changedetectionio/__init__.py

@@ -1001,8 +1001,7 @@ def changedetection_app(config=None, datastore_o=None):
             os.unlink(previous_backup_filename)
 
         # create a ZipFile object
-        timestamp = datetime.datetime.now().strftime("%Y%m%d%H%M%S")
-        backupname = "changedetection-backup-{}.zip".format(timestamp)
+        backupname = "changedetection-backup-{}.zip".format(int(time.time()))
         backup_filepath = os.path.join(datastore_o.datastore_path, backupname)
 
         with zipfile.ZipFile(backup_filepath, "w",

changedetectionio/model/Watch.py

@@ -153,9 +153,7 @@ class model(dict):
     @property
     def is_pdf(self):
         # content_type field is set in the future
-        # https://github.com/dgtlmoon/changedetection.io/issues/1392
-        # Not sure the best logic here
-        return self.get('url', '').lower().endswith('.pdf') or 'pdf' in self.get('content_type', '').lower()
+        return '.pdf' in self.get('url', '').lower() or 'pdf' in self.get('content_type', '').lower()
 
     @property
     def label(self):

changedetectionio/store.py

@@ -192,24 +192,27 @@ class ChangeDetectionStore:
         tags.sort()
         return tags
 
+    def unlink_history_file(self, path):
+        try:
+            unlink(path)
+        except (FileNotFoundError, IOError):
+            pass
+
     # Delete a single watch by UUID
     def delete(self, uuid):
-        import pathlib
-        import shutil
-
         with self.lock:
             if uuid == 'all':
                 self.__data['watching'] = {}
 
                 # GitHub #30 also delete history records
                 for uuid in self.data['watching']:
-                    path = pathlib.Path(os.path.join(self.datastore_path, uuid))
-                    shutil.rmtree(path)
-                    self.needs_write_urgent = True
+                    for path in self.data['watching'][uuid].history.values():
+                        self.unlink_history_file(path)
 
             else:
-                path = pathlib.Path(os.path.join(self.datastore_path, uuid))
-                shutil.rmtree(path)
+                for path in self.data['watching'][uuid].history.values():
+                    self.unlink_history_file(path)
+
                 del self.data['watching'][uuid]
 
             self.needs_write_urgent = True