import { NextRequest, NextResponse } from 'next/server';
import { getSession } from '@/lib/session';
import { buildRegistrationOptions, finishRegistration } from '@/lib/webauthn';

// Optionen für die Registrierung eines neuen Passkeys (Session erforderlich).
export async function GET() {
  const session = await getSession();
  if (!session) return NextResponse.json({ error: 'Nicht angemeldet' }, { status: 401 });

  try {
    return NextResponse.json(await buildRegistrationOptions());
  } catch (error) {
    console.error('GET /api/passkey/register:', error);
    return NextResponse.json({ error: 'Serverfehler' }, { status: 500 });
  }
}

// Verifiziert die Registrierungs-Antwort und speichert den Passkey.
export async function POST(request: NextRequest) {
  const session = await getSession();
  if (!session) return NextResponse.json({ error: 'Nicht angemeldet' }, { status: 401 });

  try {
    const body = await request.json();
    const result = await finishRegistration(body?.response, String(body?.label ?? ''));
    if (!result.ok) return NextResponse.json({ error: result.error }, { status: 400 });
    return NextResponse.json({ ok: true });
  } catch (error) {
    console.error('POST /api/passkey/register:', error);
    return NextResponse.json({ error: 'Serverfehler' }, { status: 500 });
  }
}