added media catalog mode, impooved cache

renamer/extractors/metadata_extractor.py

@@ -1,6 +1,7 @@
 import mutagen
 from pathlib import Path
 from ..constants import MEDIA_TYPES
+from ..decorators import cached_method
 
 
 class MetadataExtractor:
@@ -8,36 +9,40 @@ class MetadataExtractor:
 
     def __init__(self, file_path: Path):
         self.file_path = file_path
+        self._cache = {}  # Internal cache for method results
         try:
             self.info = mutagen.File(file_path) # type: ignore
         except Exception:
             self.info = None
 
+    @cached_method()
     def extract_title(self) -> str | None:
         """Extract title from metadata"""
         if self.info:
             return getattr(self.info, 'title', None) or getattr(self.info, 'get', lambda x, default=None: default)('title', [None])[0]  # type: ignore
         return None
 
+    @cached_method()
     def extract_duration(self) -> float | None:
         """Extract duration from metadata"""
         if self.info:
             return getattr(self.info, 'length', None)
         return None
 
+    @cached_method()
     def extract_artist(self) -> str | None:
         """Extract artist from metadata"""
         if self.info:
             return getattr(self.info, 'artist', None) or getattr(self.info, 'get', lambda x, default=None: default)('artist', [None])[0]  # type: ignore
         return None
 
+    @cached_method()
     def extract_meta_type(self) -> str:
         """Extract meta type from metadata"""
         if self.info:
             return type(self.info).__name__
         return self._detect_by_mime()
 
-
     def _detect_by_mime(self) -> str:
         """Detect meta type by MIME"""
         try: