ai/app/api/subscription/route.ts

import Stripe from 'stripe'
import { NextApiRequest, NextApiResponse } from 'next'
import { NextResponse } from 'next/server'
// export async function GET(req: NextApiRequest, res: NextApiResponse) {

//   const stripe = new Stripe(process.env.NEXT_PUBLIC_STRIPE_SECRET_KEY || '', {
//     apiVersion: '2022-11-15',
//   })
//   console.log(req);
//   const { route } = req.query;
//   const product = await stripe.products.retrieve(String(route));

//     const params: Stripe.Checkout.SessionCreateParams = {
//         payment_method_types: ['card'],
//         line_items: [
//             {
//               price: String(product.default_price),
//               quantity: 1,
//             }
//           ],
//         mode: 'payment',
//         success_url: `${process.env.NEXT_PUBLIC_HOST}?result=success`,
//         cancel_url: `${process.env.NEXT_PUBLIC_HOST}?result=cancelled`,
//     };
//     const checkoutSession: Stripe.Checkout.Session = await stripe.checkout.sessions.create(
//         params
//     );
//     console.log(checkoutSession);
//   res.send({
//     id: checkoutSession.id
//   });
// };

export async function GET(request: Request) {
  // The `/auth/callback` route is required for the server-side auth flow implemented
  // by the Auth Helpers package. It exchanges an auth code for the user's session.
  // https://supabase.com/docs/guides/auth/auth-helpers/nextjs#managing-sign-in-with-code-exchange
  const requestUrl = new URL(request.url)
  const code = requestUrl.searchParams.get('code')
  const stripe = new Stripe(process.env.NEXT_PUBLIC_STRIPE_SECRET_KEY || '', {
    apiVersion: '2022-11-15'
  })
  // const { route } = requestUrl.query;
  const product = await stripe.products.retrieve(String(code))

  const params: Stripe.Checkout.SessionCreateParams = {
    payment_method_types: ['card'],
    line_items: [
      {
        price: String(product.default_price),
        quantity: 1
      }
    ],
    mode: 'subscription',
    success_url: `${process.env.NEXT_PUBLIC_HOST}?result=success`,
    cancel_url: `${process.env.NEXT_PUBLIC_HOST}?result=cancelled`
  }
  const checkoutSession: Stripe.Checkout.Session = await stripe.checkout.sessions.create(params)
  console.log(checkoutSession)
  return new Response(String(checkoutSession.id), { status: 200 })

  // URL to redirect to after sign in process completes
  // return NextResponse.redirect(requestUrl.origin)
}