"""ToolRegistry - 工具注册中心"""

import logging

from agentkit.core.exceptions import ToolNotFoundError
from agentkit.tools.base import Tool

logger = logging.getLogger(__name__)


class ToolRegistry:
    """工具注册中心，管理工具的注册、发现、版本"""

    def __init__(self):
        self._tools: dict[str, dict[str, Tool]] = {}  # name -> {version -> tool}

    def register(self, tool: Tool) -> "ToolRegistry":
        """注册工具"""
        if tool.name not in self._tools:
            self._tools[tool.name] = {}
        self._tools[tool.name][tool.version] = tool
        logger.info(f"Tool '{tool.name}' v{tool.version} registered")
        return self

    def unregister(self, name: str, version: str | None = None) -> None:
        """注销工具"""
        if name not in self._tools:
            return
        if version:
            self._tools[name].pop(version, None)
            if not self._tools[name]:
                del self._tools[name]
        else:
            del self._tools[name]

    def get(self, name: str, version: str | None = None) -> Tool:
        """获取工具（默认返回最新版本）"""
        if name not in self._tools:
            raise ToolNotFoundError(name)

        versions = self._tools[name]
        if version:
            if version not in versions:
                raise ToolNotFoundError(f"{name}@{version}")
            return versions[version]

        # 返回最新版本
        latest = sorted(versions.keys())[-1]
        return versions[latest]

    def list_tools(self, tag: str | None = None) -> list[Tool]:
        """列出所有工具（最新版本），可按标签过滤"""
        result = []
        for name, versions in self._tools.items():
            latest = sorted(versions.keys())[-1]
            tool = versions[latest]
            if tag is None or tag in tool.tags:
                result.append(tool)
        return result

    def list_all_versions(self, name: str) -> list[Tool]:
        """列出指定工具的所有版本"""
        if name not in self._tools:
            return []
        return list(self._tools[name].values())

    def has_tool(self, name: str) -> bool:
        return name in self._tools

    def clear(self) -> None:
        self._tools.clear()