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

This module implements the LogQL query strategy for Grafana Loki Log Query Language operations.

Company: eXonware.com
Author: eXonware Backend Team
Email: connect@exonware.com
Version: 0.9.0.6
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 LogQLStrategy(AStructuredQueryStrategy):
    """LogQL query strategy for Grafana Loki Log Query Language operations."""
    
    def __init__(self, **options):
        super().__init__(**options)
        self._mode = QueryMode.LOGQL
        self._traits = QueryTrait.STRUCTURED | QueryTrait.ANALYTICAL | QueryTrait.TEMPORAL | QueryTrait.STREAMING
    
    def execute(self, query: str, **kwargs) -> Any:
        """Execute LogQL query."""
        if not self.validate_query(query):
            raise XWNodeValueError(f"Invalid LogQL query: {query}")
        return {"result": "LogQL query executed", "query": query}
    
    def validate_query(self, query: str) -> bool:
        """Validate LogQL query syntax."""
        if not query or not isinstance(query, str):
            return False
        return any(op in query for op in ["{", "}", "|", "rate", "sum", "count", "avg", "max", "min"])
    
    def get_query_plan(self, query: str) -> dict[str, Any]:
        """Get LogQL query execution plan."""
        return {
            "query_type": "LogQL",
            "complexity": "MEDIUM",
            "estimated_cost": 90
        }
    
    def select_query(self, table: str, columns: list[str], where_clause: str = None) -> Any:
        """Execute SELECT query."""
        return self.execute(f"{{job=\"{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"{{job=\"{tables[0]}\"}} | join {{job=\"{tables[1]}\"}}")
    
    def aggregate_query(self, table: str, functions: list[str], group_by: list[str] = None) -> Any:
        """Execute aggregate query."""
        return self.execute(f"{{job=\"{table}\"}} | {functions[0]}()")
