NodeJS source (view on github)

const stripeCache = require('../../../../stripe-cache.js')
const subscriptions = require('../../../../../index.js')

module.exports = {
  delete: async (req) => {
    if (!req.query || !req.query.subscriptionid) {
      throw new Error('invalid-subscriptionid')
    }
    const subscription = await global.api.user.subscriptions.Subscription.get(req)
    if (!subscription) {
      throw new Error('invalid-subscriptionid')
    }
    if ((subscription.stripeObject.status !== 'active' && subscription.stripeObject.status !== 'trialing') || subscription.stripeObject.cancel_at_period_end) {
      throw new Error('invalid-subscription')
    }
    if (subscription.stripeObject.status !== 'trialing') {
      const invoice = await global.api.user.subscriptions.SubscriptionProratedInvoice.get(req)
      if (invoice.amount < 0) {
        req.query.accountid = req.account.accountid
        req.query.limit = 1
        const recentInvoices = await global.api.user.subscriptions.Invoices.get(req)
        const refundInfo = {
          charge: recentInvoices[0].charge,
          amount: -invoice.amount,
          reason: 'requested_by_customer'
        }
        const refund = await stripeCache.execute('refunds', 'create', refundInfo, req.stripeKey)
        req.query.refundid = refund.id
        await subscriptions.Storage.Refund.create({
          appid: req.appid || global.appid,
          refundid: refund.id,
          accountid: req.account.accountid,
          subscriptionid: subscription.subscriptionid,
          customerid: invoice.customerid,
          invoiceid: invoice.invoiceid,
          productid: invoice.productid,
          paymentmethodid: invoice.paymentmethodid,
          stripeObject: refund
        })
      }
    }
    const subscriptionNow = await stripeCache.execute('subscriptions', 'del', req.query.subscriptionid, req.stripeKey)
    await subscriptions.Storage.Subscription.update({
      stripeObject: subscriptionNow
    }, {
      where: {
        subscriptionid: req.query.subscriptionid,
        appid: req.appid || global.appid
      }
    })
    return true
  }
}

Test source (view on github)

/* eslint-env mocha */
const assert = require('assert')
const TestHelper = require('../../../../../test-helper.js')
const TestStripeAccounts = require('../../../../../test-stripe-accounts.js')
const DashboardTestHelper = require('@layeredapps/dashboard/test-helper.js')

describe('/api/user/subscriptions/delete-subscription', function () {
  before(TestHelper.disableMetrics)
  after(TestHelper.enableMetrics)
  let cachedResponses
  async function bundledData (retryNumber) {
    if (retryNumber > 0) {
      cachedResponses = {}
    }
    if (cachedResponses && cachedResponses.finished) {
      return
    }
    cachedResponses = {}
    await TestHelper.setupBefore()
    await DashboardTestHelper.setupBeforeEach()
    await TestHelper.setupBeforeEach()
    const administrator = await TestStripeAccounts.createOwnerWithPrice()
    const user = await TestStripeAccounts.createUserWithPaidSubscription(administrator.price)
    // missing or invalid id
    const req = TestHelper.createRequest('/api/user/subscriptions/delete-subscription')
    req.account = user.account
    req.session = user.session
    req.body = {
      refund: 'at_period_end'
    }
    try {
      await req.delete()
    } catch (error) {
      cachedResponses.missing = error.message
    }
    const req2 = TestHelper.createRequest('/api/user/subscriptions/delete-subscription?subscriptionid=invalid')
    req2.account = user.account
    req2.session = user.session
    try {
      await req2.delete()
    } catch (error) {
      cachedResponses.invalid = error.message
    }
    // invalid account
    const user2 = await TestHelper.createUser()
    const req3 = TestHelper.createRequest(`/api/user/subscriptions/set-subscription-canceled?subscriptionid=${user.subscription.subscriptionid}`)
    req3.account = user2.account
    req3.session = user2.session
    req3.body = {
      refund: 'at_period_end'
    }
    try {
      await req3.patch()
    } catch (error) {
      cachedResponses.invalidAccount = error.message
    }
    // invalid subscription
    await TestHelper.cancelSubscription(user)
    const req4 = TestHelper.createRequest(`/api/user/subscriptions/delete-subscription?subscriptionid=${user.subscription.subscriptionid}`)
    req4.account = user.account
    req4.session = user.session
    try {
      await req4.delete()
    } catch (error) {
      cachedResponses.invalidSubscription = error.message
    }
    // returns
    await TestStripeAccounts.createUserWithPaidSubscription(administrator.price, user)
    const req5 = TestHelper.createRequest(`/api/user/subscriptions/delete-subscription?subscriptionid=${user.subscription.subscriptionid}`)
    req5.account = user.account
    req5.session = user.session
    req5.body = {
      refund: 'credit'
    }
    req5.filename = __filename
    req5.saveResponse = true
    cachedResponses.returns = await req5.delete()
    cachedResponses.finished = true
  }

  describe('exceptions', () => {
    describe('invalid-subscriptionid', () => {
      it('missing querystring subscriptionid', async function () {
        await bundledData(this.test.currentRetry())
        const errorMessage = cachedResponses.missing
        assert.strictEqual(errorMessage, 'invalid-subscriptionid')
      })

      it('invalid querystring subscriptionid', async function () {
        await bundledData(this.test.currentRetry())
        const errorMessage = cachedResponses.invalid
        assert.strictEqual(errorMessage, 'invalid-subscriptionid')
      })
    })

    describe('invalid-account', () => {
      it('ineligible accessing account', async function () {
        await bundledData(this.test.currentRetry())
        const errorMessage = cachedResponses.invalidAccount
        assert.strictEqual(errorMessage, 'invalid-account')
      })
    })

    describe('invalid-subscription', () => {
      it('ineligible querystring subscription is not active', async function () {
        await bundledData(this.test.currentRetry())
        const errorMessage = cachedResponses.invalidSubscription
        assert.strictEqual(errorMessage, 'invalid-subscription')
      })
    })
  })

  describe('returns', () => {
    it('boolean', async () => {
      const deleted = cachedResponses.returns
      assert.strictEqual(deleted, true)
    })
  })
})