✨ (billing) Implement custom plan

apps/builder/pages/api/stripe/custom-plan-checkout.ts

@@ -0,0 +1,61 @@
+import { withSentry } from '@sentry/nextjs'
+import { Plan } from 'db'
+import prisma from 'libs/prisma'
+import { NextApiRequest, NextApiResponse } from 'next'
+import { getAuthenticatedUser } from 'services/api/utils'
+import Stripe from 'stripe'
+import { methodNotAllowed, notAuthenticated } from 'utils/api'
+
+const handler = async (req: NextApiRequest, res: NextApiResponse) => {
+  const user = await getAuthenticatedUser(req)
+  if (!user) return notAuthenticated(res)
+  if (req.method === 'GET') {
+    const session = await createCheckoutSession(user.id)
+    if (!session?.url) return res.redirect('/typebots')
+    return res.redirect(session.url)
+  }
+
+  return methodNotAllowed(res)
+}
+
+const createCheckoutSession = async (userId: string) => {
+  if (!process.env.STRIPE_SECRET_KEY)
+    throw Error('STRIPE_SECRET_KEY var is missing')
+  const stripe = new Stripe(process.env.STRIPE_SECRET_KEY, {
+    apiVersion: '2022-08-01',
+  })
+
+  const claimableCustomPlan = await prisma.claimableCustomPlan.findFirst({
+    where: { workspace: { members: { some: { userId } } } },
+  })
+
+  if (!claimableCustomPlan) return null
+
+  return stripe.checkout.sessions.create({
+    success_url: `${process.env.NEXTAUTH_URL}/typebots?stripe=${Plan.CUSTOM}&success=true`,
+    cancel_url: `${process.env.NEXTAUTH_URL}/typebots?stripe=cancel`,
+    mode: 'subscription',
+    metadata: {
+      claimableCustomPlanId: claimableCustomPlan.id,
+    },
+    currency: claimableCustomPlan.currency,
+    automatic_tax: { enabled: true },
+    line_items: [
+      {
+        price_data: {
+          currency: claimableCustomPlan.currency,
+          tax_behavior: 'exclusive',
+          recurring: { interval: 'month' },
+          product_data: {
+            name: claimableCustomPlan.name,
+            description: claimableCustomPlan.description ?? undefined,
+          },
+          unit_amount: claimableCustomPlan.price * 100,
+        },
+        quantity: 1,
+      },
+    ],
+  })
+}
+
+export default withSentry(handler)