"""
MCP client for connecting to Model Context Protocol servers.
"""

import logging
from typing import Any, Dict, List, Optional
from ..base import BaseTool


class MCPClient:
    """
    Client for connecting to MCP servers.
    
    This class handles the connection and communication with MCP servers,
    abstracting the protocol details from the rest of the system.
    """
    
    def __init__(self, server_url: str, server_name: str):
        """
        Initialize the MCP client.
        
        Args:
            server_url: URL of the MCP server
            server_name: Name identifier for the server
        """
        self.server_url = server_url
        self.server_name = server_name
        self.logger = logging.getLogger(__name__)
        self._connected = False
        self._tools_cache: Dict[str, Any] = {}
    
    async def connect(self) -> bool:
        """
        Connect to the MCP server.
        
        Returns:
            True if connection successful, False otherwise
        """
        try:
            # Connection logic will be implemented based on MCP protocol
            # For now, this is a placeholder
            self.logger.info(f"Connecting to MCP server '{self.server_name}' at {self.server_url}")
            self._connected = True
            return True
        except Exception as e:
            self.logger.error(f"Failed to connect to MCP server '{self.server_name}': {e}")
            return False
    
    async def disconnect(self) -> None:
        """Disconnect from the MCP server."""
        if self._connected:
            self.logger.info(f"Disconnecting from MCP server '{self.server_name}'")
            self._connected = False
    
    async def list_tools(self) -> List[Dict[str, Any]]:
        """
        List available tools from the MCP server.
        
        Returns:
            List of tool descriptions
        """
        if not self._connected:
            await self.connect()
        
        # Implementation will depend on MCP protocol
        return []
    
    async def call_tool(self, tool_name: str, arguments: Dict[str, Any]) -> Any:
        """
        Call a tool on the MCP server.
        
        Args:
            tool_name: Name of the tool to call
            arguments: Arguments to pass to the tool
            
        Returns:
            Tool execution result
        """
        if not self._connected:
            await self.connect()
        
        try:
            # Implementation will depend on MCP protocol
            self.logger.debug(f"Calling MCP tool '{tool_name}' with args: {arguments}")
            # Placeholder return
            return {"result": "success", "tool": tool_name}
        except Exception as e:
            self.logger.error(f"Failed to call MCP tool '{tool_name}': {e}")
            raise
    
    def is_connected(self) -> bool:
        """Check if client is connected to the server."""
        return self._connected