# 生成 4ma 应用图标（PNG，各密度 mipmap）
# 设计：浅色圆角底板 + 绿色圆角方块 + 白色加粗 "4ma"
import os
from PIL import Image, ImageDraw, ImageFont

BASE = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
RES = os.path.join(BASE, "app", "src", "main", "res")

SIZES = {
    "mipmap-mdpi": 48,
    "mipmap-hdpi": 72,
    "mipmap-xhdpi": 96,
    "mipmap-xxhdpi": 144,
    "mipmap-xxxhdpi": 192,
}

MASTER = 1024
BG = (242, 247, 251, 255)        # 浅色底板
TILE = (16, 185, 129, 255)       # 品牌绿 #10B981
TILE_DARK = (5, 150, 105, 255)   # 深绿 #059669
WHITE = (255, 255, 255, 255)


def load_font(size):
    for name in ("segoeuib.ttf", "arialbd.ttf", "DejaVuSans-Bold.ttf"):
        for root in (os.environ.get("WINDIR", "C:/Windows") + "/Fonts", "/usr/share/fonts/truetype"):
            p = os.path.join(root, name)
            if os.path.exists(p):
                try:
                    return ImageFont.truetype(p, size)
                except Exception:
                    continue
    return ImageFont.load_default()


def make_master():
    img = Image.new("RGBA", (MASTER, MASTER), (0, 0, 0, 0))
    d = ImageDraw.Draw(img)

    # 底板：整幅浅色（launcher 会自行裁形）
    d.rectangle([0, 0, MASTER, MASTER], fill=BG)

    # 绿色圆角方块（留 16% 边距）
    m = int(MASTER * 0.16)
    d.rounded_rectangle([m, m, MASTER - m, MASTER - m],
                        radius=int(MASTER * 0.19), fill=TILE)

    # 底部 1/4 叠加深绿，做出轻微渐变感
    overlay = Image.new("RGBA", (MASTER, MASTER), (0, 0, 0, 0))
    od = ImageDraw.Draw(overlay)
    od.rounded_rectangle([m, MASTER - int(MASTER * 0.30), MASTER - m, MASTER - m],
                         radius=int(MASTER * 0.19), fill=TILE_DARK)
    img = Image.alpha_composite(img, overlay)
    d = ImageDraw.Draw(img)

    # 白色加粗 "4ma"
    font = load_font(int(MASTER * 0.40))
    text = "4ma"
    bb = d.textbbox((0, 0), text, font=font)
    w = bb[2] - bb[0]
    h = bb[3] - bb[1]
    x = (MASTER - w) / 2 - bb[0]
    y = (MASTER - h) / 2 - bb[1]
    d.text((x, y), text, font=font, fill=WHITE)
    return img


def main():
    master = make_master()
    for folder, size in SIZES.items():
        out_dir = os.path.join(RES, folder)
        os.makedirs(out_dir, exist_ok=True)
        out = os.path.join(out_dir, "ic_launcher.png")
        master.resize((size, size), Image.LANCZOS).save(out)
        print("written:", out)


if __name__ == "__main__":
    main()