import sys
from pathlib import Path
from PIL import Image

png = Path("icon.png")
if not png.exists():
    print("No icon.png found, skipping.")
    sys.exit(0)

try:
    img = Image.open(png).convert("RGBA")
    sizes = [256, 128, 64, 48, 32, 16]
    frames = []
    for s in sizes:
        frame = img.copy()
        frame.thumbnail((s, s), Image.LANCZOS)
        frames.append(frame)
    frames[0].save("icon.ico", format="ICO",
                   sizes=[(s, s) for s in sizes],
                   append_images=frames[1:])
    print("icon.ico created successfully.")
    sys.exit(0)
except Exception as e:
    print(f"WARNING: Could not convert icon.png: {e}")
    sys.exit(1)