def startDateLowerBound()

in lambda/src/main/scala/pricemigrationengine/util/StartDates.scala [96:125]

• 21 lines of code
• 6 McCabe index (conditional complexity)

  def startDateLowerBound(
      subscription: ZuoraSubscription,
      invoicePreview: ZuoraInvoiceList,
      cohortSpec: CohortSpec,
      today: LocalDate
  ): IO[ConfigFailure, LocalDate] = {

    // LowerBound from to the cohort spec and the notification window's end
    val startDateLowerBound1 = MigrationType(cohortSpec) match {
      case Newspaper2024 =>
        newspaper2024Migration.Estimation.startDateLowerbound(today, subscription)
      case GW2024            => cohortSpecLowerBound(cohortSpec, today)
      case SupporterPlus2024 => cohortSpecLowerBound(cohortSpec, today)
      case Default           => cohortSpecLowerBound(cohortSpec, today)
    }

    // We now respect the policy of not increasing members during their first year
    val startDateLowerBound2 = noPriceRiseDuringSubscriptionFirstYearPolicyUpdate(startDateLowerBound1, subscription)

    // And the policy not to price rise a sub twice within 12 months of any possible price rise
    val startDateLowerBound3 =
      noPriceRiseWithinAYearOfLastPriceRisePolicyUpdate(cohortSpec, subscription, startDateLowerBound2)

    // Decide the spread period for this migration
    val spreadPeriod = decideSpreadPeriod(subscription, invoicePreview, cohortSpec)

    for {
      randomFactor <- Random.nextIntBetween(0, spreadPeriod)
    } yield startDateLowerBound3.plusMonths(randomFactor)
  }