initial commit

app/api/checkout/route.ts

@@ -0,0 +1,64 @@
+import { auth } from '@/auth'
+import { db } from '@/lib/db'
+import { stripe } from '@/lib/stripe'
+import { NextResponse } from 'next/server'
+
+export async function POST(req: Request) {
+  try {
+    const user = await auth()
+
+    if (!user || !user.user.id) {
+      return new NextResponse('Unauthorized', { status: 401 })
+    }
+
+    const userSubscription = await db.userSubscription.findUnique({
+      where: {
+        userId: user.user.id
+      }
+    })
+
+    if (userSubscription && userSubscription.stripeCustomerId) {
+      const stripeSession = await stripe.billingPortal.sessions.create({
+        customer: userSubscription.stripeCustomerId,
+        return_url: process.env.APP_URL
+      })
+
+      return new NextResponse(JSON.stringify({ url: stripeSession.url }))
+    }
+
+    const stripeSession = await stripe.checkout.sessions.create({
+      success_url: process.env.APP_URL,
+      cancel_url: process.env.APP_URL,
+      payment_method_types: ['card'],
+
+      mode: 'subscription',
+      billing_address_collection: 'auto',
+      customer_email: user?.user.email!,
+
+      line_items: [
+        {
+          price_data: {
+            currency: 'USD',
+            product_data: {
+              name: 'Your SaaS Subscription Name',
+              description: 'Saas Subscription Description'
+            },
+            // cost (change this to the price of your product)
+            unit_amount: 899,
+            recurring: {
+              interval: 'month'
+            }
+          },
+          quantity: 1
+        }
+      ],
+      metadata: {
+        userId: user.user.id
+      }
+    })
+    return new NextResponse(JSON.stringify({ url: stripeSession.url }))
+  } catch (error) {
+    console.log('[STRIPE_GET]', error)
+    return new NextResponse('Internal Error', { status: 500 })
+  }
+}