"""Zoomed crops of the user's picture with pixel rulers, for reading parts and edges.

python tg_zoom.py NAME x0 y0 x1 y1 [scale]   -> reference/z_NAME.png
Ticks every 10 px, labels every 50 px, in the picture's own pixel coordinates.
"""
import sys
from pathlib import Path
from PIL import Image, ImageDraw

ROOT = Path(__file__).resolve().parents[1]
SRC = ROOT / "reference" / "user_picture.jpg"


def zoom(name, x0, y0, x1, y1, s=3):
    im = Image.open(SRC).convert("RGB").crop((x0, y0, x1, y1))
    im = im.resize(((x1 - x0) * s, (y1 - y0) * s), Image.LANCZOS)
    pad = 28
    out = Image.new("RGB", (im.width + pad, im.height + pad), (255, 255, 255))
    out.paste(im, (pad, pad))
    d = ImageDraw.Draw(out)
    for x in range((x0 // 10) * 10, x1 + 1, 10):
        if x < x0:
            continue
        px = pad + (x - x0) * s
        big = x % 50 == 0
        d.line([(px, pad - (10 if big else 4)), (px, pad)], fill=(0, 0, 0))
        if big:
            d.text((px + 2, 2), str(x), fill=(200, 0, 0))
            d.line([(px, pad), (px, out.height)], fill=(255, 0, 255))
    for y in range((y0 // 10) * 10, y1 + 1, 10):
        if y < y0:
            continue
        py = pad + (y - y0) * s
        big = y % 50 == 0
        d.line([(pad - (10 if big else 4), py), (pad, py)], fill=(0, 0, 0))
        if big:
            d.text((1, py + 2), str(y), fill=(200, 0, 0))
            d.line([(pad, py), (out.width, py)], fill=(255, 0, 255))
    dst = ROOT / "reference" / f"z_{name}.png"
    out.save(dst)
    print(dst)


if __name__ == "__main__":
    a = sys.argv[1:]
    zoom(a[0], *map(int, a[1:5]), *(map(int, a[5:6]) if len(a) > 5 else []))