"""ColecoVision / Adam conversion dispatch.

Both machines use the same TMS9918A VDP as the TI-99/4A, so the Graphics Mode 2
image encoding (palette + 6144-byte pattern + 768 per-cell colours) is identical
-- we reuse the TI-99 GM2 encoder unchanged.
"""
from __future__ import annotations

from ... import imageprep
from ...ti99.convert import gm2 as _gm2, mono as _mono

_MODULES = {"gm2": _gm2, "mono": _mono}
MODES = ["gm2", "mono"]


def convert_image(path_or_img, mode="gm2", palette_name="tms9918",
                  dither_mode="floyd", intensive=False, prep_opt=None, base_color=None):
    prep_opt = prep_opt or imageprep.PrepOptions()
    module = _MODULES.get(mode, _gm2)
    img_rgb = imageprep.prepare(path_or_img, module.WIDTH, module.HEIGHT,
                                module.PIXEL_ASPECT, prep_opt, border_rgb=(0, 0, 0))
    conv = module.convert(img_rgb, palette_name, dither_mode, intensive,
                          base_color=base_color)
    conv.viewer = "coleco"
    return conv