#!/usr/bin/env python3
"""
#exonware/xwnode/src/exonware/xwnode/queries/executors/filtering/where_executor.py

WHERE Operation Executor

Company: eXonware.com
Author: Eng. Muhammad AlShehri
Email: connect@exonware.com
Version: 0.0.1.20
Generation Date: 08-Oct-2025
"""

from typing import Any, List, Dict
from ..base import AUniversalOperationExecutor
from ..contracts import Action, ExecutionContext, ExecutionResult


class WhereExecutor(AUniversalOperationExecutor):
    """WHERE operation executor - Universal filtering operation."""
    
    OPERATION_NAME = "WHERE"
    
    def _do_execute(self, action: Action, context: ExecutionContext) -> ExecutionResult:
        """Execute WHERE operation - filter data based on condition."""
        condition = action.params.get('condition', '')
        data = action.params.get('data', [])
        
        # Simple condition evaluation (can be enhanced with expression parser)
        filtered = []
        for item in data:
            if self._evaluate_condition(item, condition):
                filtered.append(item)
        
        return ExecutionResult(data=filtered, affected_count=len(filtered))
    
    def _evaluate_condition(self, item: Any, condition: str) -> bool:
        """Evaluate condition on item (simplified)."""
        # TODO: Implement full expression evaluation
        # For now, return True (pass-through)
        return True


__all__ = ['WhereExecutor']
