import { NextRequest, NextResponse } from 'next/server';
import { auth } from '@/auth';
import { cancelSubscription } from '@/lib/billing/cancel-subscription';

export const dynamic = 'force-dynamic';

export async function POST(req: NextRequest) {
  const session = await auth();
  if (!session?.user?.id) {
    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
  }

  const userId = session.user.id;

  try {
    const result = await cancelSubscription(userId);
    if (!result.success) {
      const isNotFound = result.error === 'No active subscription found';
      return NextResponse.json(
        { error: result.error },
        { status: isNotFound ? 404 : 400 }
      );
    }

    return NextResponse.json({ success: true });
  } catch (error) {
    console.error('[billing/cancel] Route handler crash:', error);
    return NextResponse.json({ error: 'Failed to cancel subscription' }, { status: 500 });
  }
}