Ship a page that charges what your product is worth.

// app/api/webhooks/stripe/route.ts
import { headers } from 'next/headers';
import Stripe from 'stripe';
import { createClient } from '@/lib/supabase/server';

const stripe = new Stripe(process.env.STRIPE_SECRET_KEY!);

export async function POST(req: Request) {
  const body = await req.text();
  const sig = headers().get('stripe-signature')!;

  const event = stripe.webhooks.constructEvent(
    body, sig, process.env.STRIPE_WEBHOOK_SECRET!
  );

  if (event.type === 'checkout.session.completed') {
    const session = event.data.object;
    const supabase = await createClient();

    await supabase.from('purchases').insert({
      user_id: session.client_reference_id,
      plan: session.metadata?.plan,
      stripe_session_id: session.id,
      created_at: new Date().toISOString(),
    });
  }

  return Response.json({ received: true });
}