import os
import tempfile
from pathlib import Path

def convert_to_bgcode(gcode: str, name_part: str, compress: bool = True) -> bytes:
    """
    Converts a G-code string to binary BGCode using the pybgcode library.
    Returns the binary content of the converted file.
    """
    try:
        import pybgcode  # pyright: ignore[reportMissingImports]
    except ImportError:
        raise ImportError("pybgcode library not found. Ensure wheels are correctly integrated.")

    with tempfile.TemporaryDirectory() as tmpdir:
        tmp_gcode_path = Path(tmpdir) / (name_part + ".gcode")
        tmp_bgcode_path = Path(tmpdir) / (name_part + ".bgcode")
        
        tmp_gcode_path.write_text(gcode, encoding="utf-8")
        
        infile = pybgcode.open(str(tmp_gcode_path), "r")
        if not infile:
            raise RuntimeError(f"Failed to open input G-code file: {tmp_gcode_path}")
            
        outfile = pybgcode.open(str(tmp_bgcode_path), "wb")
        if not outfile:
            pybgcode.close(infile)
            raise RuntimeError(f"Failed to open output BGCode file: {tmp_bgcode_path}")
        
        config = pybgcode.get_config()
        # Default config from pybgcode usually has MeatPack + Heatshrink enabled.
        
        try:
            res = pybgcode.from_ascii_to_binary(infile, outfile, config)
            if res != pybgcode.EResult.Success:
                # pybgcode.translate_result provides a human-readable error message
                err_msg = pybgcode.translate_result(res)
                raise RuntimeError(f"bgcode conversion failed: {err_msg}")
        finally:
            pybgcode.close(infile)
            pybgcode.close(outfile)
        
        if tmp_bgcode_path.exists():
            return tmp_bgcode_path.read_bytes()
        else:
            raise FileNotFoundError("Failed to find generated .bgcode file")