transformation added

apps/abstraction/transformation.py

@@ -0,0 +1,88 @@
+"""Payload transformation functions for vendor-specific device communication.
+
+This module provides transformation functions to translate between abstract
+home protocol payloads and vendor-specific device payloads.
+"""
+
+import logging
+from typing import Any
+
+logger = logging.getLogger(__name__)
+
+
+def transform_abstract_to_vendor(
+    device_type: str,
+    device_technology: str,
+    abstract_payload: dict[str, Any]
+) -> dict[str, Any]:
+    """Transform abstract payload to vendor-specific payload for SET commands.
+    
+    This function allows technology-specific transformations when sending commands
+    to devices. For example, different vendors might use different field names or
+    value formats for the same abstract concept.
+    
+    Args:
+        device_type: Type of device (e.g., 'light', 'thermostat')
+        device_technology: Technology identifier (e.g., 'zigbee2mqtt', 'tasmota')
+        abstract_payload: Abstract payload following home protocol
+        
+    Returns:
+        Vendor-specific payload for the device
+        
+    Example:
+        Input:  {'power': 'on', 'brightness': 75}
+        Output: {'state': 'ON', 'brightness': 75}  # hypothetical vendor format
+    """
+    logger.debug(
+        f"transform_abstract_to_vendor IN: type={device_type}, tech={device_technology}, "
+        f"payload={abstract_payload}"
+    )
+    
+    # TODO: Implement technology-specific transformations here
+    # Currently pass-through: return payload unchanged
+    vendor_payload = abstract_payload
+    
+    logger.debug(
+        f"transform_abstract_to_vendor OUT: type={device_type}, tech={device_technology}, "
+        f"payload={vendor_payload}"
+    )
+    return vendor_payload
+
+
+def transform_vendor_to_abstract(
+    device_type: str,
+    device_technology: str,
+    vendor_payload: dict[str, Any]
+) -> dict[str, Any]:
+    """Transform vendor-specific payload to abstract payload for STATE messages.
+    
+    This function allows technology-specific transformations when receiving state
+    updates from devices. For example, different vendors might report state using
+    different field names or value formats.
+    
+    Args:
+        device_type: Type of device (e.g., 'light', 'thermostat')
+        device_technology: Technology identifier (e.g., 'zigbee2mqtt', 'tasmota')
+        vendor_payload: Vendor-specific payload from the device
+        
+    Returns:
+        Abstract payload following home protocol
+        
+    Example:
+        Input:  {'state': 'ON', 'brightness': 75}  # hypothetical vendor format
+        Output: {'power': 'on', 'brightness': 75}
+    """
+    logger.debug(
+        f"transform_vendor_to_abstract IN: type={device_type}, tech={device_technology}, "
+        f"payload={vendor_payload}"
+    )
+    
+    # TODO: Implement technology-specific transformations here
+    # Currently pass-through: return payload unchanged
+    abstract_payload = vendor_payload
+    
+    logger.debug(
+        f"transform_vendor_to_abstract OUT: type={device_type}, tech={device_technology}, "
+        f"payload={abstract_payload}"
+    )
+    return abstract_payload