Integrate with Express

COMMET_API_KEY=ck_sandbox_xxx

import { Commet } from '@commet/node'

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

import { Router } from 'express'
import { commet } from '../commet'

const router = Router()

router.post('/subscribe', async (req, res) => {
  const { customerId, email } = req.body

  await commet.customers.create({ email, id: customerId })

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

  res.json({ checkoutUrl: subscription.checkoutUrl ?? null })
})

export default router

router.get('/subscription/:customerId', async (req, res) => {
  const subscription = await commet.subscriptions.getActive({ customerId: req.params.customerId })

  if (!subscription) {
    return res.status(404).json({ error: 'no_active_subscription' })
  }

  res.json({ status: subscription.status })
})

router.get('/features/:feature/:customerId', async (req, res) => {
  const access = await commet.featureAccess.get({
    code: req.params.feature,
    customerId: req.params.customerId,
  })

  res.json({ allowed: access.allowed })
})

router.post('/usage', async (req, res) => {
  await commet.usage.track({
    customerId: req.body.customerId,
    featureCode: 'api_calls',
    value: 1,
  })

  res.json({ tracked: true })
})

router.get('/portal', async (req, res) => {
  const portal = await commet.portal.getUrl({
    customerId: req.user.customerId,
  })

  res.redirect(portal.portalUrl)
})

import express from 'express'
import billingRoutes from './routes/billing'

const app = express()

app.use(express.json())
app.use('/billing', billingRoutes)

app.listen(3000)