# -*- coding: utf-8 -*-
from __future__ import annotations
import re
from pathlib import Path
from typing import Any


def current_filename(record: dict[str, Any]) -> str:
    if record.get("type") == "week":
        return f"week-{int(record.get('week') or 0):02d}.json"
    return "overall.json"


def cleanup_legacy_files(directory: Path, record: dict[str, Any], keep: str) -> None:
    if record.get("type") == "week":
        week = int(record.get("week") or 0)
        pattern = re.compile(rf"^week[-_]?0?{week}(?:[-_].*)?\.json$", re.I)
    else:
        pattern = re.compile(r"^overall(?:[-_].*)?\.json$", re.I)
    for path in directory.glob("*.json"):
        if path.name in {"index.json", "state.json", keep}: continue
        if pattern.match(path.name):
            try: path.unlink()
            except OSError: pass