#!/usr/bin/env python3
"""Generates Renamr's app icon set (placeholder branding, easy to swap later).

Produces the sizes Tauri's bundler expects in src-tauri/icons/.
"""
from PIL import Image, ImageDraw, ImageFont
import os

OUT = os.path.join(os.path.dirname(__file__), "..", "src-tauri", "icons")
os.makedirs(OUT, exist_ok=True)

SIZE = 1024
BG_TOP = (91, 76, 245)      # indigo
BG_BOTTOM = (56, 189, 178)  # teal
FG = (255, 255, 255)

def make_master():
    img = Image.new("RGB", (SIZE, SIZE), BG_TOP)
    px = img.load()
    for y in range(SIZE):
        t = y / SIZE
        r = int(BG_TOP[0] * (1 - t) + BG_BOTTOM[0] * t)
        g = int(BG_TOP[1] * (1 - t) + BG_BOTTOM[1] * t)
        b = int(BG_TOP[2] * (1 - t) + BG_BOTTOM[2] * t)
        for x in range(SIZE):
            px[x, y] = (r, g, b)

    # rounded-square mask
    mask = Image.new("L", (SIZE, SIZE), 0)
    ImageDraw.Draw(mask).rounded_rectangle([0, 0, SIZE - 1, SIZE - 1], radius=SIZE // 5, fill=255)
    canvas = Image.new("RGBA", (SIZE, SIZE), (0, 0, 0, 0))
    canvas.paste(img, (0, 0), mask)

    draw = ImageDraw.Draw(canvas)
    font = ImageFont.truetype("/usr/share/fonts/truetype/google-fonts/Poppins-Bold.ttf", int(SIZE * 0.56))
    text = "R"
    bbox = draw.textbbox((0, 0), text, font=font)
    tw, th = bbox[2] - bbox[0], bbox[3] - bbox[1]
    draw.text(((SIZE - tw) / 2 - bbox[0], (SIZE - th) / 2 - bbox[1] - SIZE * 0.02), text, font=font, fill=FG)

    return canvas

master = make_master()
master.save(os.path.join(OUT, "icon-master.png"))

sizes = [32, 128, 256, 512, 1024]
for s in sizes:
    master.resize((s, s), Image.LANCZOS).save(os.path.join(OUT, f"{s}x{s}.png"))

# Tauri's expected filenames
master.resize((32, 32), Image.LANCZOS).save(os.path.join(OUT, "32x32.png"))
master.resize((128, 128), Image.LANCZOS).save(os.path.join(OUT, "128x128.png"))
master.resize((256, 256), Image.LANCZOS).save(os.path.join(OUT, "128x128@2x.png"))

# Windows .ico (multi-resolution)
ico_sizes = [(16, 16), (24, 24), (32, 32), (48, 48), (64, 64), (128, 128), (256, 256)]
master.save(os.path.join(OUT, "icon.ico"), sizes=ico_sizes)

# macOS .icns
try:
    master.save(os.path.join(OUT, "icon.icns"), format="ICNS")
except Exception as e:
    print(f"WARN: could not write icon.icns via Pillow ({e}); leaving it out")

print("done:", os.listdir(OUT))