import { AppData } from './types';

export async function fetchLeaderboard(): Promise<AppData | null> {
  const API_BASE = process.env.NEXT_PUBLIC_API_BASE || '';
  const SERVER_ID = process.env.SERVER_ID || '';
  const ACCESS_TOKEN = process.env.ACCESS_TOKEN || '';

  if (!API_BASE || !SERVER_ID || !ACCESS_TOKEN) {
    console.warn('Missing API configuration');
    return null;
  }

  try {
    const res = await fetch(`${API_BASE}/server/${SERVER_ID}/leaderboard`, {
      headers: {
        "Access-Key": ACCESS_TOKEN
      }
    });
    if (!res.ok) return null;
    const data = await res.json();
    // Treat empty leaderboard (no drivers) as null to fall back to defaults
    if (!data || !data.drivers || data.drivers.length === 0) return null;
    return data;
  } catch (e) {
    console.error("Failed to load leaderboard from API:", e);
    return null;
  }
}