Allow replacing a higher quality with a lower quality if it is in your preferred qualities

Fixes https://github.com/SickRage/sickrage-issues/issues/329

sickbeard/postProcessor.py

@@ -148,7 +148,7 @@ class PostProcessor(object):
                       logger.DEBUG)
             return PostProcessor.DOESNT_EXIST
 
-    def list_associated_files(self, file_path, base_name_only=False, subtitles_only=False, subfolders=False):
+    def list_associated_files(self, file_path, base_name_only=False, subtitles_only=False, subfolders=False):  # pylint: disable=unused-argument
         """
         For a given file path searches for files with the same name but different extension and returns their absolute paths
 
@@ -970,7 +970,9 @@ class PostProcessor(object):
                 if self.is_proper and new_ep_quality == old_ep_quality:
                     self._log(u"New file is a proper/repack, marking it safe to replace")
                 else:
-                    self._log(u"File exists and new file is the same or lower quality than existing, marking it unsafe to replace")
+                    _, preferred_qualities = common.Quality.splitQuality(int(show.quality))
+                    if new_ep_quality not in preferred_qualities:
+                        self._log(u"File exists and new file quality is not in a preferred quality list, marking it unsafe to replace")
                         return False
 
             # Check if the processed file season is already in our indexer. If not, the file is most probably mislabled/fake and will be skipped
@@ -993,7 +995,7 @@ class PostProcessor(object):
 
         # try to find out if we have enough space to perform the copy or move action.
         if not helpers.isFileLocked(self.file_path, False):
-            if not verify_freespace(self.file_path, ep_obj.show._location, [ep_obj] + ep_obj.relatedEps):
+            if not verify_freespace(self.file_path, ep_obj.show._location, [ep_obj] + ep_obj.relatedEps):  # pylint: disable=protected-access
                 self._log("Not enough space to continue PP, exiting", logger.WARNING)
                 return False
         else:
@@ -1006,7 +1008,7 @@ class PostProcessor(object):
 
                 # clean up any left over folders
                 if cur_ep.location:
-                    helpers.delete_empty_folders(ek(os.path.dirname, cur_ep.location), keep_dir=ep_obj.show._location)
+                    helpers.delete_empty_folders(ek(os.path.dirname, cur_ep.location), keep_dir=ep_obj.show._location)  # pylint: disable=protected-access
             except (OSError, IOError):
                 raise EpisodePostProcessingFailedException("Unable to delete the existing files")
 
@@ -1015,16 +1017,16 @@ class PostProcessor(object):
             #    curEp.status = common.Quality.compositeStatus(common.SNATCHED, new_ep_quality)
 
         # if the show directory doesn't exist then make it if allowed
-        if not ek(os.path.isdir, ep_obj.show._location) and sickbeard.CREATE_MISSING_SHOW_DIRS:
+        if not ek(os.path.isdir, ep_obj.show._location) and sickbeard.CREATE_MISSING_SHOW_DIRS:  # pylint: disable=protected-access
             self._log(u"Show directory doesn't exist, creating it", logger.DEBUG)
             try:
-                ek(os.mkdir, ep_obj.show._location)
-                helpers.chmodAsParent(ep_obj.show._location)
+                ek(os.mkdir, ep_obj.show._location)  # pylint: disable=protected-access
+                helpers.chmodAsParent(ep_obj.show._location)  # pylint: disable=protected-access
 
                 # do the library update for synoindex
-                notifiers.synoindex_notifier.addFolder(ep_obj.show._location)
+                notifiers.synoindex_notifier.addFolder(ep_obj.show._location)  # pylint: disable=protected-access
             except (OSError, IOError):
-                raise EpisodePostProcessingFailedException("Unable to create the show directory: " + ep_obj.show._location)
+                raise EpisodePostProcessingFailedException("Unable to create the show directory: " + ep_obj.show._location)  # pylint: disable=protected-access
 
             # get metadata for the show (but not episode because it hasn't been fully processed)
             ep_obj.show.writeMetadata(True)
@@ -1170,7 +1172,7 @@ class PostProcessor(object):
         # If any notification fails, don't stop postProcessor
         try:
             # send notifications
-            notifiers.notify_download(ep_obj._format_pattern('%SN - %Sx%0E - %EN - %QN'))
+            notifiers.notify_download(ep_obj._format_pattern('%SN - %Sx%0E - %EN - %QN'))  # pylint: disable=protected-access
 
             # do the library update for KODI
             notifiers.kodi_notifier.update_library(ep_obj.show.name)