"""Download official Graphviz win64 portable into md2gost/vendor/graphviz (for exe builds)."""

from __future__ import annotations

import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
if str(ROOT) not in sys.path:
    sys.path.insert(0, str(ROOT))

from md2gost.dfd import (  # noqa: E402
    GRAPHVIZ_VERSION,
    GRAPHVIZ_ZIP_URL,
    fetch_graphviz,
    resolve_graphviz_engine,
    strip_graphviz_tcl_libs,
    vendor_graphviz_root,
)


def main() -> int:
    dest = vendor_graphviz_root()
    print(f"Graphviz {GRAPHVIZ_VERSION}: {GRAPHVIZ_ZIP_URL}")
    print(f"Куда:     {dest}")
    if resolve_graphviz_engine(False) and (dest / "bin").is_dir():
        n = strip_graphviz_tcl_libs(dest)
        hit = resolve_graphviz_engine(False)
        extra = f", снял Tcl/Tk DLL Graphviz: {n}" if n else ""
        print(f"Уже есть: {hit}{extra}")
        return 0
    if fetch_graphviz(dest):
        hit = resolve_graphviz_engine(False)
        print(f"Готово: {hit or dest}")
        return 0
    print(
        "Не удалось скачать Graphviz "
        "(exe соберётся; DFD пойдёт через kroki.io или системный PATH)."
    )
    return 0


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