#!/usr/bin/env python3
"""
GQL Query Strategy

This module implements the GQL query strategy for ISO/IEC 39075:2024 Graph Query Language operations.

Company: eXonware.com
Author: Eng. Muhammad AlShehri
Email: connect@exonware.com
Version: 0.0.1.19
Generation Date: January 2, 2025
"""

from typing import Any, Dict, List, Optional
from .base import AGraphQueryStrategy
from ...errors import XWNodeValueError
from ...contracts import QueryMode, QueryTrait


class GQLStrategy(AGraphQueryStrategy):
    """GQL query strategy for ISO/IEC 39075:2024 Graph Query Language operations."""
    
    def __init__(self, **options):
        super().__init__(**options)
        self._mode = QueryMode.GQL
        self._traits = QueryTrait.GRAPH | QueryTrait.STRUCTURED | QueryTrait.ANALYTICAL
    
    def execute(self, query: str, **kwargs) -> Any:
        """Execute GQL query."""
        if not self.validate_query(query):
            raise XWNodeValueError(f"Invalid GQL query: {query}")
        return {"result": "GQL query executed", "query": query}
    
    def validate_query(self, query: str) -> bool:
        """Validate GQL query syntax."""
        if not query or not isinstance(query, str):
            return False
        return any(op in query.upper() for op in ["MATCH", "SELECT", "WHERE", "RETURN", "CREATE", "DELETE"])
    
    def get_query_plan(self, query: str) -> Dict[str, Any]:
        """Get GQL query execution plan."""
        return {
            "query_type": "GQL",
            "complexity": "HIGH",
            "estimated_cost": 150
        }
    
    def match_query(self, pattern: str, where_clause: str = None) -> Any:
        """Execute MATCH query."""
        return self.execute(f"MATCH {pattern}")
    
    def create_query(self, pattern: str) -> Any:
        """Execute CREATE query."""
        return self.execute(f"CREATE {pattern}")
    
    def delete_query(self, pattern: str) -> Any:
        """Execute DELETE query."""
        return self.execute(f"DELETE {pattern}")
    
    def set_query(self, pattern: str) -> Any:
        """Execute SET query."""
        return self.execute(f"SET {pattern}")
    
    def remove_query(self, pattern: str) -> Any:
        """Execute REMOVE query."""
        return self.execute(f"REMOVE {pattern}")
    
    def merge_query(self, pattern: str) -> Any:
        """Execute MERGE query."""
        return self.execute(f"MERGE {pattern}")
