"""整理文件或目录工具"""

from pathlib import Path
from typing import Optional, Type

from pydantic import BaseModel, Field

from app.agent.tools.base import MoviePilotTool
from app.log import logger
from app.schemas import FileItem, MediaType


class TransferFileInput(BaseModel):
    """整理文件或目录工具的输入参数模型"""

    explanation: str = Field(
        ...,
        description="Clear explanation of why this tool is being used in the current context",
    )
    file_path: str = Field(
        ...,
        description="Path to the file or directory to transfer (e.g., '/path/to/file.mkv' or '/path/to/directory')",
    )
    storage: Optional[str] = Field(
        "local",
        description="Storage type of the source file (default: 'local', can be 'smb', 'alist', etc.)",
    )
    target_path: Optional[str] = Field(
        None,
        description="Target path for the transferred file/directory (optional, uses default library path if not specified)",
    )
    target_storage: Optional[str] = Field(
        None,
        description="Target storage type (optional, uses default storage if not specified)",
    )
    media_type: Optional[str] = Field(None, description="Allowed values: movie, tv")
    tmdbid: Optional[int] = Field(
        None,
        description="TMDB ID for precise media identification (optional but recommended for accuracy)",
    )
    doubanid: Optional[str] = Field(
        None, description="Douban ID for media identification (optional)"
    )
    season: Optional[int] = Field(
        None, description="Season number for TV shows (optional)"
    )
    transfer_type: Optional[str] = Field(
        None,
        description="Transfer mode: 'move' to move files, 'copy' to copy files, 'link' for hard link, 'softlink' for symbolic link (optional, uses default mode if not specified)",
    )
    background: Optional[bool] = Field(
        False,
        description="Whether to run transfer in background (default: False, runs synchronously)",
    )


class TransferFileTool(MoviePilotTool):
    name: str = "transfer_file"
    description: str = "Transfer/organize a file or directory to the media library. Automatically recognizes media information and organizes files according to configured rules. Supports custom target paths, media identification, and transfer modes."
    args_schema: Type[BaseModel] = TransferFileInput
    require_admin: bool = True

    def get_tool_message(self, **kwargs) -> Optional[str]:
        """根据整理参数生成友好的提示消息"""
        file_path = kwargs.get("file_path", "")
        media_type = kwargs.get("media_type")
        transfer_type = kwargs.get("transfer_type")
        background = kwargs.get("background", False)

        message = f"整理文件: {file_path}"
        if media_type:
            message += f" [{media_type}]"
        if transfer_type:
            transfer_map = {
                "move": "移动",
                "copy": "复制",
                "link": "硬链接",
                "softlink": "软链接",
            }
            message += f" 模式: {transfer_map.get(transfer_type, transfer_type)}"
        if background:
            message += " [后台运行]"

        return message

    @staticmethod
    def _transfer_file_sync(
        file_path: str,
        storage: Optional[str] = "local",
        target_path: Optional[str] = None,
        target_storage: Optional[str] = None,
        media_type: Optional[str] = None,
        tmdbid: Optional[int] = None,
        doubanid: Optional[str] = None,
        season: Optional[int] = None,
        transfer_type: Optional[str] = None,
        background: Optional[bool] = False,
    ) -> str:
        """
        文件整理链路包含大量同步磁盘与外部服务调用，需要在线程池中运行。
        """
        if not file_path:
            return "错误：必须提供文件或目录路径"

        if storage == "local":
            if not file_path.startswith("/") and not (
                len(file_path) > 1 and file_path[1] == ":"
            ):
                file_path = str(Path(file_path).resolve())
        elif not file_path.startswith("/"):
            file_path = "/" + file_path

        fileitem = FileItem(
            storage=storage or "local",
            path=file_path,
            type="dir" if file_path.endswith("/") else "file",
        )
        target_path_obj = Path(target_path) if target_path else None

        media_type_enum = None
        if media_type:
            media_type_enum = MediaType.from_agent(media_type)
            if not media_type_enum:
                return f"错误：无效的媒体类型 '{media_type}'，支持的类型：'movie', 'tv'"

        from app.chain.transfer import TransferChain

        state, errormsg = TransferChain().manual_transfer(
            fileitem=fileitem,
            target_storage=target_storage,
            target_path=target_path_obj,
            tmdbid=tmdbid,
            doubanid=doubanid,
            mtype=media_type_enum,
            season=season,
            transfer_type=transfer_type,
            background=background,
        )

        if state:
            if background:
                return f"整理任务已提交到后台运行：{file_path}"
            return f"整理成功：{file_path}"

        if isinstance(errormsg, list):
            error_text = f"整理完成，{len(errormsg)} 个文件转移失败"
            if errormsg:
                error_text += "：\n" + "\n".join(str(e) for e in errormsg[:5])
                if len(errormsg) > 5:
                    error_text += f"\n... 还有 {len(errormsg) - 5} 个错误"
        else:
            error_text = str(errormsg)
        return f"整理失败：{error_text}"

    async def run(
        self,
        file_path: str,
        storage: Optional[str] = "local",
        target_path: Optional[str] = None,
        target_storage: Optional[str] = None,
        media_type: Optional[str] = None,
        tmdbid: Optional[int] = None,
        doubanid: Optional[str] = None,
        season: Optional[int] = None,
        transfer_type: Optional[str] = None,
        background: Optional[bool] = False,
        **kwargs,
    ) -> str:
        logger.info(
            f"执行工具: {self.name}, 参数: file_path={file_path}, storage={storage}, target_path={target_path}, "
            f"target_storage={target_storage}, media_type={media_type}, tmdbid={tmdbid}, doubanid={doubanid}, "
            f"season={season}, transfer_type={transfer_type}, background={background}"
        )

        try:
            return await self.run_blocking(
                "storage",
                self._transfer_file_sync,
                file_path,
                storage,
                target_path,
                target_storage,
                media_type,
                tmdbid,
                doubanid,
                season,
                transfer_type,
                background,
            )
        except Exception as e:
            logger.error(f"整理文件失败: {e}", exc_info=True)
            return f"整理文件时发生错误: {str(e)}"