Integrate with Next.js

COMMET_API_KEY=ck_sandbox_xxx

import { Commet } from '@commet/node'

export const commet = new Commet({
  apiKey: process.env.COMMET_API_KEY!,
})

'use server'

import { redirect } from 'next/navigation'
import { commet } from '@/lib/commet'

export async function subscribe(customerId: string) {
  await commet.customers.create({
    email: 'user@example.com',
    id: customerId,
  })

  const subscription = await commet.subscriptions.create({
    customerId,
    planCode: 'pro',
  })

  const checkoutUrl = subscription.checkoutUrl
  if (checkoutUrl) {
    redirect(checkoutUrl)
  }
}

export async function getSubscription(customerId: string) {
  const subscription = await commet.subscriptions.getActive({ customerId })

  return subscription
}

export async function canUseFeature(customerId: string, feature: string) {
  const access = await commet.featureAccess.get({ code: feature, customerId })

  return access.allowed
}

export async function trackApiCall(customerId: string) {
  await commet.usage.track({
    customerId,
    featureCode: 'api_calls',
    value: 1,
  })
}

import { CustomerPortal } from '@commet/next'

export const GET = CustomerPortal({
  apiKey: process.env.COMMET_API_KEY!,
  getCustomerId: async (req) => {
    return 'user_123'
  },
})