"""Resolve a CJK-capable font for offline visualization subprocesses."""

from __future__ import annotations

from pathlib import Path

# Keep in sync with algorithm_subprocesses/5.15/visualize_result_video.py
CJK_FONT_CANDIDATES: tuple[Path, ...] = (
    Path("/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc"),
    Path("/usr/share/fonts/opentype/noto/NotoSerifCJK-Regular.ttc"),
    Path("/usr/share/fonts/truetype/noto/NotoSansCJK-Regular.ttc"),
    Path("/usr/share/fonts/truetype/wqy/wqy-microhei.ttc"),
    Path("/usr/share/fonts/truetype/wqy/wqy-zenhei.ttc"),
)


def resolve_cjk_font_path() -> Path | None:
    for candidate in CJK_FONT_CANDIDATES:
        if candidate.is_file():
            return candidate.resolve()
    return None