#!/usr/bin/env python3
"""컷아웃 PNG → 알파 정제 → 표준 캔버스(900x1125) 정규화 → public/avatar/seoyeon/<name>.png 게시.
모든 변주가 동일 캔버스·중앙 배치로 레이어 픽셀 정렬.
사용: python publish.py <입력.png> <name>   예: python publish.py cut-sad.png sad
"""
import sys
from PIL import Image
import numpy as np

CANVAS = (900, 1125)  # 4:5
PUB = r"D:/workspace/vignette/apps/web/public/avatar/seoyeon"
LO, HI = 35, 205  # 알파 정제 임계치(배경 헤이즈 제거, 주체는 완전불투명)


def main() -> int:
    src, name = sys.argv[1], sys.argv[2]
    im = Image.open(src).convert("RGBA")
    arr = np.array(im).astype(np.float32)
    a = arr[:, :, 3]
    clean = np.clip((a - LO) * 255.0 / (HI - LO), 0, 255)
    arr[:, :, 3] = clean
    im = Image.fromarray(arr.astype(np.uint8), "RGBA")
    im.thumbnail(CANVAS, Image.LANCZOS)
    canvas = Image.new("RGBA", CANVAS, (0, 0, 0, 0))
    canvas.alpha_composite(im, ((CANVAS[0] - im.width) // 2, (CANVAS[1] - im.height) // 2))
    out = f"{PUB}/{name}.png"
    canvas.save(out, optimize=True)
    al = np.array(canvas.split()[3])
    print(f"published {name}.png  size={canvas.size} "
          f"opaque%={float((al == 255).mean()) * 100:.1f} "
          f"transparent%={float((al == 0).mean()) * 100:.1f} "
          f"semi%={float(((al > 0) & (al < 255)).mean()) * 100:.1f}")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())