"use client";

import { useEffect } from "react";

const STORAGE_KEY = "changelogLastSeen";

export function MarkChangelogSeen({ latestDate }: { latestDate: string | null }) {
  useEffect(() => {
    if (!latestDate) return;
    try {
      const prev = window.localStorage.getItem(STORAGE_KEY);
      if (!prev || prev < latestDate) {
        window.localStorage.setItem(STORAGE_KEY, latestDate);
      }
    } catch {
      // localStorage unavailable — no-op
    }
  }, [latestDate]);
  return null;
}