"""Build a C128 autobooting .d64 (the VDC viewer PRG, loaded with RUN"PIC")."""
from __future__ import annotations

import os

from .. import diskimage
from .viewer import assemble


def export_d64(conv, output_path, source_path=None, display="forever",
               seconds=0, video="ntsc"):
    if not output_path.lower().endswith(".d64"):
        output_path += ".d64"
    # "color" = 80x100 chunky solid cells; "hicolor" (also used by mono) =
    # 640x200 custom-charset font mode.
    if conv.meta.get("vdc_mode") == "color":
        prg = assemble.build_prg_color(bytes(conv.data), conv.meta.get("fgbg", 0x0F))
    else:
        prg = assemble.build_prg_hicolor(bytes(conv.data), conv.meta.get("fgbg", 0x00))
    name = os.path.splitext(os.path.basename(source_path or output_path))[0]
    diskimage.build_disk(output_path, "d64", name[:16] or "8bitlenser", "cv",
                         [("pic", prg)])
    return output_path