export async function fetchSteamProfile(
  steamId: string
): Promise<{ name: string; avatar: string } | null> {
  const key = process.env.STEAM_API_KEY;
  if (!key) return null;

  const url = `https://api.steampowered.com/ISteamUser/GetPlayerSummaries/v2/?key=${key}&steamids=${steamId}`;

  try {
    const res = await fetch(url);
    const contentType = res.headers.get('content-type') || '';

    if (!res.ok || !contentType.includes('application/json')) {
      const text = await res.text();
      console.warn(`[SteamAPI] ⚠️  Ungültige Antwort für ${steamId} (${res.status}):`, text.slice(0, 200));
      return null;
    }

    const data = await res.json();
    const player = data.response?.players?.[0];
    if (!player) return null;

    return {
      name: player.personaname,
      avatar: player.avatarfull,
    };
  } catch (err) {
    console.warn(`[SteamAPI] ❌ Fehler für ${steamId}:`, err);
    return null;
  }
}