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

This module implements the EQL query strategy for Elasticsearch Query Language operations.

Company: eXonware.com
Author: eXonware Backend Team
Email: connect@exonware.com
Version: 0.0.1.8
Generation Date: January 2, 2025
"""

from typing import Any
from .base import AStructuredQueryStrategy
from exonware.xwnode.errors import XWNodeValueError
from exonware.xwnode.contracts import QueryMode, QueryTrait


class EQLStrategy(AStructuredQueryStrategy):
    """EQL query strategy for Elasticsearch Query Language operations."""
    
    def __init__(self, **options):
        super().__init__(**options)
        self._mode = QueryMode.EQL
        self._traits = QueryTrait.STRUCTURED | QueryTrait.ANALYTICAL | QueryTrait.BATCH
    
    def execute(self, query: str, **kwargs) -> Any:
        """Execute EQL query."""
        if not self.validate_query(query):
            raise XWNodeValueError(f"Invalid EQL query: {query}")
        return {"result": "EQL query executed", "query": query}
    
    def validate_query(self, query: str) -> bool:
        """Validate EQL query syntax."""
        if not query or not isinstance(query, str):
            return False
        return any(op in query.upper() for op in ["SEQUENCE", "JOIN", "FILTER", "WHERE"])
    
    def get_query_plan(self, query: str) -> dict[str, Any]:
        """Get EQL query execution plan."""
        return {
            "query_type": "EQL",
            "complexity": "MEDIUM",
            "estimated_cost": 100
        }
    
    def select_query(self, table: str, columns: list[str], where_clause: str = None) -> Any:
        """Execute SELECT query."""
        return self.execute(f"SELECT {', '.join(columns)} FROM {table}")
    
    def insert_query(self, table: str, data: dict[str, Any]) -> Any:
        """Execute INSERT query."""
        return self.execute(f"INSERT INTO {table} VALUES {data}")
    
    def update_query(self, table: str, data: dict[str, Any], where_clause: str = None) -> Any:
        """Execute UPDATE query."""
        return self.execute(f"UPDATE {table} SET {data}")
    
    def delete_query(self, table: str, where_clause: str = None) -> Any:
        """Execute DELETE query."""
        return self.execute(f"DELETE FROM {table}")
    
    def join_query(self, tables: list[str], join_conditions: list[str]) -> Any:
        """Execute JOIN query."""
        return self.execute(f"JOIN {tables[0]} WITH {tables[1]}")
    
    def aggregate_query(self, table: str, functions: list[str], group_by: list[str] = None) -> Any:
        """Execute aggregate query."""
        return self.execute(f"AGGREGATE {', '.join(functions)} FROM {table}")
