added media catalog mode, impooved cache

renamer/decorators/caching.py

@@ -0,0 +1,49 @@
+"""Caching decorators for extractors."""
+
+import hashlib
+import json
+from pathlib import Path
+from typing import Any, Callable, Optional
+from renamer.cache import Cache
+
+
+# Global cache instance
+_cache = Cache()
+
+
+def cached_method(ttl_seconds: int = 3600) -> Callable:
+    """Decorator to cache method results with TTL.
+
+    Caches the result of a method call using a global file-based cache.
+    The cache key includes class name, method name, and parameters hash.
+
+    Args:
+        ttl_seconds: Time to live for cached results in seconds (default 1 hour)
+
+    Returns:
+        The decorated method with caching
+    """
+    def decorator(func: Callable) -> Callable:
+        def wrapper(self, *args, **kwargs) -> Any:
+            # Generate cache key: class_name.method_name.param_hash
+            class_name = self.__class__.__name__
+            method_name = func.__name__
+            
+            # Create hash from args and kwargs
+            param_str = json.dumps((args, kwargs), sort_keys=True, default=str)
+            param_hash = hashlib.md5(param_str.encode('utf-8')).hexdigest()
+            
+            cache_key = f"{class_name}.{method_name}.{param_hash}"
+            
+            # Try to get from cache
+            cached_result = _cache.get_object(cache_key)
+            if cached_result is not None:
+                return cached_result
+            
+            # Compute result and cache it
+            result = func(self, *args, **kwargs)
+            _cache.set_object(cache_key, result, ttl_seconds)
+            return result
+        
+        return wrapper
+    return decorator