import { NextRequest, NextResponse } from 'next/server';
import { initPaymentProviders, paymentRegistry } from '@/lib/payment';
import type { PaymentType } from '@/lib/payment';
import { handlePaymentNotify } from '@/lib/order/service';

// Stripe needs raw body - ensure Next.js doesn't parse it
export const dynamic = 'force-dynamic';

export async function POST(request: NextRequest): Promise<NextResponse> {
  try {
    initPaymentProviders();
    const provider = paymentRegistry.getProvider('stripe' as PaymentType);

    const rawBody = Buffer.from(await request.arrayBuffer());
    const headers: Record<string, string> = {};
    request.headers.forEach((value, key) => {
      headers[key.toLowerCase()] = value;
    });

    const notification = await provider.verifyNotification(rawBody, headers);
    if (!notification) {
      // Unknown event type — acknowledge receipt
      return NextResponse.json({ received: true });
    }
    await handlePaymentNotify(notification, provider.name);

    return NextResponse.json({ received: true });
  } catch (error) {
    console.error('Stripe webhook error:', error);
    return NextResponse.json(
      { error: 'Webhook processing failed' },
      { status: 400 },
    );
  }
}