Update action_mapper.py

Author: pierrerondel

transformers/action_mapper.py

@@ -1,4 +1,48 @@
-from typing import Dict, Any
+"""Action mapping transformer.
+
+This module defines a transformer responsible for mapping action values
+between vendor-specific representations and the universal data model.
+"""
+
+from typing import Any
+from typing import Dict
+
+from .base_transformer import BaseTransformer
+
+
+class ActionMapper(BaseTransformer):
+    """Map action values between vendor and universal models.
+
+    This transformer replaces the ``action`` field of an item using a
+    predefined mapping dictionary. If the action is not found in the
+    mapping, it is left unchanged.
+    """
+
+    def __init__(self, action_map: Dict[str, str]) -> None:
+        """Initialize the ActionMapper.
+
+        Args:
+            action_map: A dictionary mapping source action values to
+                destination action values.
+        """
+        self.action_map = action_map
+
+    def transform(self, item: Dict[str, Any]) -> Dict[str, Any]:
+        """Transform an item's action field using the action mapping.
+
+        Args:
+            item: A dictionary representing a single rule or configuration
+                entry containing an ``action`` field.
+
+        Returns:
+            The transformed item with its ``action`` field mapped according
+            to the configured action map.
+        """
+        action = item.get("action")
+        if action in self.action_map:
+            item["action"] = self.action_map[action]
+
+        return itemfrom typing import Dict, Any
 from .base_transformer import BaseTransformer
 
 class ActionMapper(BaseTransformer):