[change] Update best_quality.py (#3959)

* [change] best_quality: can now return multiple best entries

The best_quality plugin was just considering the first entry as the best quality, and that's not always true, many entries can have the same quality as the best.

using "single_best = no" to activates this new mode

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

flexget/plugins/filter/best_quality.py

@@ -25,6 +25,10 @@ class FilterBestQuality:
                 'enum': ['accept', 'reject', 'do_nothing'],
                 'default': 'reject',
             },
+            'single_best': {
+                'type': 'boolean',
+                'default': True,
+            },
         },
         'additionalProperties': False,
     }
@@ -53,15 +57,26 @@ def on_task_filter(self, task, config):
             # Sort entities in order of quality and best proper
             entries.sort(key=lambda e: (e['quality'], e.get('proper_count', 0)), reverse=True)
 
-            # First entry will be the best quality
-            best = entries.pop(0)
+            if config['single_best']:
+                # First entry will be the best quality
+                best = entries.pop(0)
 
-            if action_on_best:
-                action_on_best(best, 'has the best quality for identifier %s' % identifier)
+                if action_on_best:
+                    action_on_best(best, 'has the best quality for identifier %s' % identifier)
 
-            if action_on_lower:
+                if action_on_lower:
+                    for entry in entries:
+                        action_on_lower(entry, 'lower quality for identifier %s' % identifier)
+            else:
+                # Store the best quality for comparison
+                best_quality = entries[0]['quality']
                 for entry in entries:
-                    action_on_lower(entry, 'lower quality for identifier %s' % identifier)
+                    if action_on_best and entry['quality'] == best_quality:
+                        action_on_best(
+                            entry, 'has the best quality for identifier %s' % identifier
+                        )
+                    if action_on_lower and entry['quality'] < best_quality:
+                        action_on_lower(entry, 'lower quality for identifier %s' % identifier)
 
 
 @event('plugin.register')