Overleaf/services/web/scripts/stripe/rollback-finalized-stripe-migration.mjs

#!/usr/bin/env node

/**
 * This script rolls back the cutover of a subscription from Recurly to Stripe.
 *
 * IMPORTANT: This script does NOT cancel the Stripe subscription.
 * Use scripts/stripe/bulk-cancel-subscriptions.mjs to cancel them separately.
 *
 * It undoes everything done by finalize-stripe-subscription-migration.mjs
 *
 * Usage:
 *   node scripts/stripe/rollback-finalized-stripe-migration.mjs [OPTS] [INPUT-FILE]
 *
 * Options:
 *   --output PATH          Output file path (default: /tmp/rollback_output_<timestamp>.csv)
 *   --commit               Apply changes (without this, runs in dry-run mode)
 *   --throttle DURATION    Minimum time between requests in ms (default: 40)
 *   --help                 Show help message
 *
 * CSV Input Format:
 *   recurly_account_code,target_stripe_account,stripe_customer_id
 *   507f1f77bcf86cd799439011,stripe-uk,cus_1234567890abcdef
 *
 * CSV Output Format:
 *   recurly_account_code,target_stripe_account,stripe_customer_id,status,note
 *
 * Note: recurly_account_code is the Overleaf user ID (admin_id)
 */

import fs from 'node:fs'
import path from 'node:path'
import { setTimeout } from 'node:timers/promises'
import * as csv from 'csv'
import minimist from 'minimist'
import { z } from '../../app/src/infrastructure/Validation.mjs'
import { scriptRunner } from '../lib/ScriptRunner.mjs'
import { getRegionClient } from '../../modules/subscriptions/app/src/StripeClient.mjs'
import RecurlyWrapper from '../../app/src/Features/Subscription/RecurlyWrapper.mjs'
import { Subscription } from '../../app/src/models/Subscription.mjs'
import AnalyticsManager from '../../app/src/Features/Analytics/AnalyticsManager.mjs'
import { ReportError } from './helpers.mjs'
import AccountMappingHelper from '../../app/src/Features/Analytics/AccountMappingHelper.mjs'

const DEFAULT_THROTTLE = 40

function usage() {
  console.error(`Usage: node scripts/stripe/rollback-finalized-stripe-migration.mjs [OPTS] [INPUT-FILE]

Options:
    --output PATH          Output file path (default: /tmp/rollback_output_<timestamp>.csv)
    --commit               Apply changes (without this, runs in dry-run mode)
    --throttle DURATION    Minimum time between requests in ms (default: ${DEFAULT_THROTTLE})
    --help                 Show this help message

Note: This script does NOT cancel Stripe subscriptions. Use scripts/stripe/bulk-cancel-subscriptions.mjs separately.
`)
}

async function main(trackProgress) {
  const opts = parseArgs()
  const timestamp = new Date().toISOString().replace(/[:.]/g, '-')
  const outputFile = opts.output ?? `/tmp/rollback_output_${timestamp}.csv`

  await trackProgress('Starting Stripe to Recurly rollback')
  await trackProgress(`Run mode: ${opts.commit ? 'COMMIT' : 'DRY RUN'}`)
  await trackProgress(
    'Note: Stripe subscriptions are NOT cancelled by this script'
  )
  await trackProgress(`Throttle: ${opts.throttle}ms between requests`)

  const inputStream = opts.inputFile
    ? fs.createReadStream(opts.inputFile)
    : process.stdin
  const csvReader = getCsvReader(inputStream)
  const csvWriter = getCsvWriter(outputFile)

  await trackProgress(`Output: ${outputFile}`)

  let processedCount = 0
  let successCount = 0
  let errorCount = 0

  let lastLoopTimestamp = 0
  for await (const input of csvReader) {
    const timeSinceLastLoop = Date.now() - lastLoopTimestamp
    if (timeSinceLastLoop < opts.throttle) {
      await setTimeout(opts.throttle - timeSinceLastLoop)
    }
    lastLoopTimestamp = Date.now()

    processedCount++

    try {
      const result = await processRollback(input, opts.commit)

      csvWriter.write({
        recurly_account_code: input.recurly_account_code,
        target_stripe_account: input.target_stripe_account,
        stripe_customer_id: input.stripe_customer_id,
        status: result.status,
        note: result.note,
      })

      if (
        result.status === 'rolled-back' ||
        result.status === 'validated' ||
        result.status === 'already-recurly'
      ) {
        successCount++
      } else {
        errorCount++
      }

      if (processedCount % 25 === 0) {
        await trackProgress(
          `Progress: ${processedCount} processed, ${successCount} successful, ${errorCount} errors`
        )
      }
    } catch (err) {
      errorCount++
      if (err instanceof ReportError) {
        csvWriter.write({
          recurly_account_code: input.recurly_account_code,
          target_stripe_account: input.target_stripe_account,
          stripe_customer_id: input.stripe_customer_id,
          status: err.status,
          note: err.message,
        })
      } else {
        csvWriter.write({
          recurly_account_code: input.recurly_account_code,
          target_stripe_account: input.target_stripe_account,
          stripe_customer_id: input.stripe_customer_id,
          status: 'error',
          note: err.message,
        })
      }
    }
  }

  await trackProgress(`✅ Total processed: ${processedCount}`)
  if (opts.commit) {
    await trackProgress(`✅ Successfully rolled back: ${successCount}`)
  } else {
    await trackProgress(`✅ Successfully validated: ${successCount}`)
    await trackProgress('ℹ️  DRY RUN: No changes were applied')
  }
  await trackProgress(`❌ Errors: ${errorCount}`)
  await trackProgress('🎉 Script completed!')

  csvWriter.end()
}

function getCsvReader(inputStream) {
  const parser = csv.parse({ columns: true })
  inputStream.pipe(parser)
  return parser
}

function getCsvWriter(outputFile) {
  fs.mkdirSync(path.dirname(outputFile), { recursive: true })
  const outputStream = fs.createWriteStream(outputFile)

  const writer = csv.stringify({
    columns: [
      'recurly_account_code',
      'target_stripe_account',
      'stripe_customer_id',
      'status',
      'note',
    ],
    header: true,
  })

  writer.on('error', err => {
    console.error(err)
    process.exit(1)
  })

  writer.pipe(outputStream)
  return writer
}

async function processRollback(input, commit) {
  const {
    recurly_account_code: accountCode,
    target_stripe_account: targetStripeAccount,
  } = input

  // Get Stripe client for the target account (strip 'stripe-' prefix if present)
  const region = targetStripeAccount.replace(/^stripe-/, '')
  const stripeClient = getRegionClient(region)

  // 1. Fetch Mongo subscription
  const mongoSubscription = await Subscription.findOne({
    admin_id: accountCode,
  }).exec()
  if (!mongoSubscription) {
    throw new ReportError(
      'no-mongo-subscription',
      'No subscription found in Mongo'
    )
  }

  // 2. Check if already using Recurly
  if (
    mongoSubscription.recurlySubscription_id &&
    !mongoSubscription.paymentProvider?.service?.includes('stripe')
  ) {
    throw new ReportError(
      'already-recurly',
      'Subscription already using Recurly'
    )
  }

  // 3. Verify subscription is using Stripe
  if (!mongoSubscription.paymentProvider?.service?.includes('stripe')) {
    throw new ReportError(
      'not-using-stripe',
      'Subscription is not using Stripe'
    )
  }

  const stripeSubscriptionId = mongoSubscription.paymentProvider.subscriptionId

  // 4. Find Recurly subscription ID from Stripe metadata
  let recurlySubscriptionId
  try {
    const stripeSubData =
      await stripeClient.stripe.subscriptions.retrieve(stripeSubscriptionId)
    recurlySubscriptionId = stripeSubData.metadata?.recurly_subscription_id
    if (!recurlySubscriptionId) {
      throw new ReportError(
        'no-recurly-id-in-metadata',
        'No recurly_subscription_id found in Stripe metadata'
      )
    }
  } catch (err) {
    if (err instanceof ReportError) throw err
    throw new ReportError(
      'stripe-fetch-error',
      `Failed to fetch Stripe subscription: ${err.message}`
    )
  }

  // 5. Fetch Recurly subscription to get original billing date
  let recurlySubscription
  try {
    recurlySubscription = await RecurlyWrapper.promises.getSubscription(
      recurlySubscriptionId,
      {}
    )
  } catch (err) {
    throw new ReportError(
      'no-recurly-subscription',
      `Recurly subscription not found: ${err.message}`
    )
  }

  // 6. If commit mode, perform rollback
  if (commit) {
    await performRollback(mongoSubscription, recurlySubscription, stripeClient)
    return {
      status: 'rolled-back',
      note: 'Successfully rolled back to Recurly',
    }
  } else {
    return {
      status: 'validated',
      note: 'DRY RUN: Ready to rollback to Recurly',
    }
  }
}

async function performRollback(
  mongoSubscription,
  recurlySubscription,
  stripeClient
) {
  const adminUserId = mongoSubscription.admin_id.toString()
  const recurlySubscriptionId = recurlySubscription.uuid
  const stripeSubscriptionId = mongoSubscription.paymentProvider.subscriptionId

  // Step 1: Restore Recurly fields in Mongo
  mongoSubscription.recurlySubscription_id = recurlySubscriptionId
  mongoSubscription.recurlyStatus = {
    state: recurlySubscription.state,
    trialStartedAt: recurlySubscription.trial_started_at,
    trialEndsAt: recurlySubscription.trial_ends_at,
  }
  mongoSubscription.paymentProvider = undefined
  await mongoSubscription.save()

  // Step 2: Emit rollback analytics event
  AnalyticsManager.recordEventForUserInBackground(
    adminUserId,
    'subscription-rolled-back-from-stripe',
    {
      subscriptionId: mongoSubscription._id.toString(),
      migrationDirection: 'stripe-to-recurly',
    }
  )

  // Step 3: Un-postpone Recurly billing by 10 years if next billing period was postponed
  const currentPeriodEnd = new Date(recurlySubscription.current_period_ends_at)
  const nineYearsFromNow = new Date()
  nineYearsFromNow.setFullYear(new Date().getFullYear() + 9)

  if (currentPeriodEnd > nineYearsFromNow) {
    const nextBillingDate = new Date(currentPeriodEnd)
    nextBillingDate.setFullYear(currentPeriodEnd.getFullYear() - 10)
    const targetBillingDateIsInFuture = nextBillingDate.getTime() > Date.now()

    if (targetBillingDateIsInFuture) {
      try {
        await RecurlyWrapper.promises.apiRequest({
          url: `subscriptions/${recurlySubscriptionId}/postpone`,
          qs: { bulk: true, next_bill_date: nextBillingDate },
          method: 'PUT',
        })
      } catch (err) {
        throw new ReportError(
          'rolled-back-recurly-restore-failed',
          `Restored Mongo but failed to restore Recurly billing: ${err.message}`
        )
      }
    } else {
      throw new ReportError(
        'rolled-back-recurly-restore-failed',
        `Restored Mongo and Recurly but failed to restore Recurly billing: target next billing date is in the past (${nextBillingDate.toISOString()})`
      )
    }
  }

  // Step 4: Restore migration metadata to Stripe
  try {
    await stripeClient.updateSubscriptionMetadata(stripeSubscriptionId, {
      recurly_to_stripe_migration_status: 'in_progress',
    })
  } catch (err) {
    throw new ReportError(
      'rolled-back-metadata-restore-failed',
      `Restored Mongo and Recurly but failed to restore Stripe metadata: ${err.message}`
    )
  }

  // Step 5: Register analytics mapping for the Recurly subscription
  try {
    AnalyticsManager.registerAccountMapping(
      AccountMappingHelper.generateSubscriptionToRecurlyMapping(
        mongoSubscription._id,
        recurlySubscriptionId,
        'recurly'
      )
    )
  } catch (err) {
    throw new ReportError(
      'rolled-back-analytics-mapping-failed',
      `Restored Mongo, Recurly, Stripe but failed to register analytics mapping: ${err.message}`
    )
  }
}

function parseArgs() {
  const args = minimist(process.argv.slice(2), {
    string: ['output'],
    number: ['throttle'],
    boolean: ['commit', 'help'],
    default: {
      commit: false,
      throttle: DEFAULT_THROTTLE,
    },
  })

  if (args.help) {
    usage()
    process.exit(0)
  }

  const inputFile = args._[0]
  const paramsSchema = z.object({
    output: z.string().optional(),
    commit: z.boolean(),
    throttle: z.number().int().positive(),
    inputFile: z.string().optional(),
  })

  try {
    return paramsSchema.parse({
      output: args.output,
      commit: args.commit,
      throttle: args.throttle,
      inputFile,
    })
  } catch (err) {
    console.error('Invalid arguments:', err.message)
    usage()
    process.exit(1)
  }
}

try {
  await scriptRunner(main)
  process.exit(0)
} catch (error) {
  console.error(error)
  process.exit(1)
}