#!/usr/bin/env python3
"""Regenerate the portable 256-color crest data."""

from __future__ import annotations

import json
import re
import subprocess
from pathlib import Path


ROOT = Path(__file__).resolve().parent.parent
ASSETS = ROOT / "synadm_tui_thueringen" / "assets"
PIXEL = re.compile(r"#([0-9A-Fa-f]{8})\s")


def main() -> int:
    process = subprocess.run(
        ["convert", str(ASSETS / "thueringen-wappen.png"), "-filter", "Lanczos", "-resize", "18x20!", "txt:-"],
        check=True,
        text=True,
        stdout=subprocess.PIPE,
    )
    pixels = [match.group(1).lower() for line in process.stdout.splitlines() if (match := PIXEL.search(line))]
    if len(pixels) != 18 * 20:
        raise RuntimeError(f"360 Pixel erwartet, {len(pixels)} erhalten")
    target = ASSETS / "thuringia.block.json"
    target.write_text(
        json.dumps({"width": 18, "height": 20, "pixels": pixels}, separators=(",", ":")) + "\n",
        encoding="utf-8",
    )
    print(target)
    return 0


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