"""打印机发送模块：通过局域网将 3MF 发送到 Bambu A1 并开始打印。"""

from __future__ import annotations
from pathlib import Path
from dataclasses import dataclass

@dataclass
class PrinterConfig:
    """打印机连接配置。"""
    ip: str = ""              # 打印机 IP 地址
    access_code: str = ""     # 局域网访问码
    serial: str = ""          # 打印机序列号

def send_to_printer(file_path: Path, config: PrinterConfig) -> bool:
    """将 3MF 文件上传至打印机并开始打印。

    Args:
        file_path: 要发送的 3MF 文件路径
        config: 打印机连接配置

    Returns:
        True 表示成功，False 表示失败

    Raises:
        ImportError: bambulabs_api 未安装
        Exception: 连接或上传失败
    """
    # 延迟导入，避免在没有 bambulabs_api 时报错
    from bambulabs_api import Printer as BambuPrinter
    printer = BambuPrinter(config.ip, config.access_code, config.serial)
    try:
        printer.connect()
        file_name = file_path.name
        with open(file_path, "rb") as f:
            import io
            result = printer.upload_file(io.BytesIO(f.read()), file_name)
        if "226" not in result:
            raise RuntimeError(f"上传文件失败: {result}")
        printer.start_print(file_name, plate_number=1)
        return True
    finally:
        printer.disconnect()