from abc import ABC, abstractmethod
from dataclasses import dataclass
from typing import Any, Dict, Optional


@dataclass
class ToolResult:
    success: bool
    data: Any
    error: Optional[str] = None


class BaseTool(ABC):
    """Abstract base for all agent tools."""

    name: str = "base_tool"
    description: str = ""

    @abstractmethod
    async def run(self, **kwargs) -> ToolResult:
        """Execute the tool and return a ToolResult."""

    def _ok(self, data: Any) -> ToolResult:
        return ToolResult(success=True, data=data)

    def _err(self, error: str) -> ToolResult:
        return ToolResult(success=False, data=None, error=error)