#!/usr/bin/env python3
"""
#exonware/xwquery/src/exonware/xwquery/executors/graph/clone_executor.py
CLONE Operation Executor - Clone graph structure
Company: eXonware.com
Author: eXonware Backend Team
Email: connect@exonware.com
Version: 0.9.0.6
Generation Date: 28-Oct-2025
"""

from typing import Any
from ..base import AUniversalOperationExecutor
from ....contracts import QueryAction, ExecutionContext, ExecutionResult


class CloneExecutor(AUniversalOperationExecutor):
    """
    CLONE operation executor - Clone graph structure.
    Creates a deep copy of a graph or subgraph, including:
    - All nodes with their properties
    - All edges with their properties
    - Graph metadata
    Useful for:
    - Creating graph snapshots
    - Testing graph algorithms without modifying original
    - Creating parallel graph versions
    Reuses xwnode graph cloning (COW strategies).
    """
    OPERATION_NAME = "CLONE"

    def _do_execute(self, action: QueryAction, context: ExecutionContext) -> ExecutionResult:
        """Execute CLONE operation."""
        params = action.params
        node = context.node
        result_data = self._execute_clone(node, params, context)
        return ExecutionResult(
            success=True,
            data=result_data,
            action_type=self.OPERATION_NAME,
            metadata={'operation': self.OPERATION_NAME}
        )

    def _execute_clone(self, node: Any, params: dict, context: ExecutionContext) -> dict:
        """
        Execute CLONE - Clone graph structure.
        FUTURE: Will use xwnode COW (Copy-On-Write) strategies.
        """
        deep_copy = params.get('deep_copy', True)
        copy_properties = params.get('copy_properties', True)
        copy_metadata = params.get('copy_metadata', True)
        cloned_graph = None
        # FUTURE: Use xwnode's COW strategies
        # if deep_copy:
        #     cloned_graph = graph.deep_clone(
        #         copy_properties=copy_properties,
        #         copy_metadata=copy_metadata
        #     )
        # else:
        #     cloned_graph = graph.shallow_clone()
        return {
            'cloned_graph': cloned_graph,
            'deep_copy': deep_copy,
            'copy_properties': copy_properties,
            'copy_metadata': copy_metadata,
            'status': 'basic_implementation',
            'note': 'Will use xwnode COW strategies for production'
        }
__all__ = ['CloneExecutor']
