#!/usr/bin/env python3
"""Increment BuildNumber in update.go, then sync versioninfo / macOS bat / Android."""
from __future__ import annotations

import re
import subprocess
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
UPDATE_GO = ROOT / "internal" / "update" / "update.go"


def bump() -> int:
    text = UPDATE_GO.read_text(encoding="utf-8")
    m = re.search(r"const BuildNumber\s*=\s*(\d+)", text)
    if not m:
        raise SystemExit("cannot find BuildNumber in update.go")
    n = int(m.group(1)) + 1
    text2, count = re.subn(
        r"const BuildNumber\s*=\s*\d+",
        f"const BuildNumber = {n}",
        text,
        count=1,
    )
    if count != 1:
        raise SystemExit("failed to rewrite BuildNumber")
    UPDATE_GO.write_text(text2, encoding="utf-8")
    print(f"BuildNumber: {m.group(1)} -> {n}", flush=True)
    return n


def main() -> None:
    bump()
    sync = ROOT / "scripts" / "sync-version.py"
    r = subprocess.run([sys.executable, str(sync)], cwd=ROOT, check=False)
    if r.returncode != 0:
        raise SystemExit(r.returncode)


if __name__ == "__main__":
    main()