export async function wordle(req) {
  const { searchParams: sp } = new URL(req.url);
  const date = sp.get('date');

  if (!date) {
    const today = new Date().toISOString().split('T')[0];
    try {
      const res = await fetch(`https://www.nytimes.com/svc/wordle/v2/${today}.json`);
      if (!res.ok) throw new Error("not out yet");
      const data = await res.json();
      return {
        date: data.print_date || today,
        solution: data.solution || null,
        id: data.id || null,
        days_since_launch: data.days_since_launch || null,
        editor: data.editor || null
      };
    } catch {
      return {
        error: "today's wordle not available yet, try again later",
        usage: "/wordle?date=2026-07-25"
      };
    }
  }

  try {
    const res = await fetch(`https://www.nytimes.com/svc/wordle/v2/${date}.json`);
    if (!res.ok) throw new Error("not found");
    const data = await res.json();
    return {
      date: data.print_date || date,
      solution: data.solution || null,
      id: data.id || null,
      days_since_launch: data.days_since_launch || null,
      editor: data.editor || null
    };
  } catch {
    return { error: `no wordle for ${date}` };
  }
}