"""Git 切换分支工具"""
import subprocess
import logging
from typing import Dict, Any

from app.tools.base import BaseTool, ToolResult
from app.tools.registry import ToolRegistry

logger = logging.getLogger(__name__)

@ToolRegistry.register
class GitCheckoutTool(BaseTool):
    """切换或创建 Git 分支"""

    @property
    def parameters_schema(self) -> Dict[str, Any]:
        return {
            "type": "object",
            "properties": {
                "repo_path": {
                    "type": "string",
                    "description": "Git 仓库路径"
                },
                "branch_name": {
                    "type": "string",
                    "description": "分支名称"
                },
                "create_new": {
                    "type": "boolean",
                    "description": "是否创建新分支",
                    "default": True
                }
            },
            "required": ["repo_path", "branch_name"]
        }

    def execute(self,
                repo_path: str,
                branch_name: str,
                create_new: bool = True,
                **kwargs) -> ToolResult:
        """
        切换或创建分支

        Args:
            repo_path: 仓库路径
            branch_name: 分支名称
            create_new: 是否创建新分支

        Returns:
            ToolResult: 包含切换结果的工具返回对象
        """
        # 参数验证
        if not repo_path or not repo_path.strip():
            error_msg = "仓库路径不能为空"
            logger.error(error_msg)
            raise ValueError(error_msg)

        if not branch_name or not branch_name.strip():
            error_msg = "分支名称不能为空"
            logger.error(error_msg)
            raise ValueError(error_msg)

        # 构建命令
        if create_new:
            checkout_cmd = ["git", "checkout", "-b", branch_name]
        else:
            checkout_cmd = ["git", "checkout", branch_name]

        result = subprocess.run(
            checkout_cmd,
            capture_output=True,
            encoding='utf-8',
            cwd=repo_path
        )

        if result.returncode != 0:
            error_msg = f"切换分支失败: {result.stderr}"
            logger.error(error_msg)
            raise RuntimeError(error_msg)

        logger.info(f"已切换到分支: {branch_name}")

        return ToolResult(
            success=True,
            data={
                "branch_name": branch_name,
                "repo_path": repo_path,
                "created_new": create_new
            },
            message=f"已切换到分支: {branch_name}"
        )