from typing import Dict, Any, Callable, List
from pydantic import BaseModel

class Tool(BaseModel):
    name: str
    description: str
    parameters: Dict[str, Any]
    func: Callable

class ToolRegistry:
    def __init__(self):
        self._tools: Dict[str, Tool] = {}

    def register(self, name: str, description: str, parameters: Dict[str, Any], func: Callable):
        self._tools[name] = Tool(
            name=name,
            description=description,
            parameters=parameters,
            func=func
        )

    def get_tool(self, name: str) -> Tool:
        return self._tools.get(name)

    def list_tools(self) -> List[Tool]:
        return list(self._tools.values())

    def to_gemini_tools(self) -> List[Dict[str, Any]]:
        # Convert to Gemini tool format
        # This is a simplified conversion, actual schema mapping needed
        tools = []
        for tool in self._tools.values():
            tools.append({
                "function_declarations": [{
                    "name": tool.name,
                    "description": tool.description,
                    "parameters": tool.parameters
                }]
            })
        return tools

tool_registry = ToolRegistry()