static generateCourtOfferedPaymentIntention (draft: DraftClaimantResponse, claim: Claim, decisionType: DecisionType): PaymentIntention {
    const courtOfferedPaymentIntention = new PaymentIntention()
    const claimResponse = claim.response as FullAdmissionResponse | PartialAdmissionResponse
    const admittedClaimAmount: number = AdmissionHelper.getAdmittedAmount(claim)

    if (decisionType === DecisionType.CLAIMANT || decisionType === DecisionType.CLAIMANT_IN_FAVOUR_OF_DEFENDANT) {
      courtOfferedPaymentIntention.paymentOption = PaymentOption.IMMEDIATELY
      courtOfferedPaymentIntention.paymentDate = MomentFactory.currentDate().add(5, 'days')
    }

    if (decisionType === DecisionType.COURT) {
      const paymentPlanFromDefendantFinancialStatement: PaymentPlan = PaymentPlanHelper.createPaymentPlanFromDefendantFinancialStatement(claim, draft)

      if (claimResponse.paymentIntention.paymentOption === PaymentOption.INSTALMENTS) {
        const defendantFrequency: Frequency = Frequency.of(claimResponse.paymentIntention.repaymentPlan.paymentSchedule)
        const paymentPlanConvertedToDefendantFrequency: PaymentPlan = paymentPlanFromDefendantFinancialStatement.convertTo(defendantFrequency)

        courtOfferedPaymentIntention.paymentOption = PaymentOption.INSTALMENTS
        courtOfferedPaymentIntention.repaymentPlan = {
          firstPaymentDate: paymentPlanConvertedToDefendantFrequency.startDate,
          instalmentAmount: paymentPlanConvertedToDefendantFrequency.instalmentAmount > admittedClaimAmount ?
            admittedClaimAmount : _.round(paymentPlanConvertedToDefendantFrequency.instalmentAmount,2),
          paymentSchedule: Frequency.toPaymentSchedule(paymentPlanConvertedToDefendantFrequency.frequency),
          completionDate: paymentPlanConvertedToDefendantFrequency.calculateLastPaymentDate(),
          paymentLength: paymentPlanConvertedToDefendantFrequency.calculatePaymentLength()
        }
      } else {
        const paymentPlanConvertedToMonthlyFrequency: PaymentPlan = paymentPlanFromDefendantFinancialStatement.convertTo(Frequency.MONTHLY)

        courtOfferedPaymentIntention.paymentOption = PaymentOption.INSTALMENTS
        courtOfferedPaymentIntention.repaymentPlan = {
          firstPaymentDate: paymentPlanConvertedToMonthlyFrequency.startDate,
          instalmentAmount: paymentPlanConvertedToMonthlyFrequency.instalmentAmount > admittedClaimAmount ?
            admittedClaimAmount : _.round(paymentPlanConvertedToMonthlyFrequency.instalmentAmount,2),
          paymentSchedule: Frequency.toPaymentSchedule(paymentPlanConvertedToMonthlyFrequency.frequency),
          completionDate: paymentPlanConvertedToMonthlyFrequency.calculateLastPaymentDate(),
          paymentLength: paymentPlanConvertedToMonthlyFrequency.calculatePaymentLength()
        }
      }
    }

    if (decisionType === DecisionType.DEFENDANT) {

      if (claimResponse.paymentIntention.paymentOption === PaymentOption.BY_SPECIFIED_DATE) {
        courtOfferedPaymentIntention.paymentDate = claimResponse.paymentIntention.paymentDate
        courtOfferedPaymentIntention.paymentOption = PaymentOption.BY_SPECIFIED_DATE
      }

      if (claimResponse.paymentIntention.paymentOption === PaymentOption.INSTALMENTS) {

        courtOfferedPaymentIntention.paymentOption = PaymentOption.INSTALMENTS
        courtOfferedPaymentIntention.repaymentPlan = claimResponse.paymentIntention.repaymentPlan
      }
    }
    return courtOfferedPaymentIntention
  }

  .get(AppPaths.paymentPlanCalculation.uri, (req, res) => {

    const totalAmount: string = req.query['total-amount']
    const instalmentAmount: string = req.query['instalment-amount']
    const frequencyInWeeks: string = req.query['frequency-in-weeks']

    const error: string = validate(totalAmount, instalmentAmount, frequencyInWeeks)

    if (error) {
      return res.status(HttpStatus.UNPROCESSABLE_ENTITY).json({
        error: {
          status: HttpStatus.UNPROCESSABLE_ENTITY,
          message: error
        }
      })
    }

    const frequency: Frequency = Frequency.ofWeekly(Number(frequencyInWeeks))
    const paymentPlan: PaymentPlan = PaymentPlan.create(Number(totalAmount), Number(instalmentAmount), frequency)

    return res.status(HttpStatus.OK).json({
      paymentPlan: {
        paymentLength: paymentPlan.calculatePaymentLength(),
        lastPaymentDate: paymentPlan.calculateLastPaymentDate().toJSON()
      }
    })
  })

 it('should throw exception for invalid input', () => {
   try {
     Frequency.of('unknown')
   } catch (e) {
     expect(e.message).to.equal(`There is no Frequency for value: 'unknown'`)
   }
 })

 private toFrequency (paymentFrequency: PaymentFrequency): Frequency {
   try {
     return Frequency.of(paymentFrequency)
   } catch (error) {
     return undefined
   }
 }

  private static createPaymentPlanFromClaimAdmission (response: FullAdmissionResponse | PartialAdmissionResponse,
                                                      totalAmount: number,
                                                      draft: DraftClaimantResponse): PaymentPlan {
    const paymentIntention: PI = response.paymentIntention
    if (!paymentIntention) {
      return undefined
    }

    if (paymentIntention.repaymentPlan) {
      return PaymentPlanHelper.createPaymentPlanFromInstallment(
        totalAmount,
        paymentIntention.repaymentPlan.instalmentAmount,
        Frequency.of(paymentIntention.repaymentPlan.paymentSchedule),
        paymentIntention.repaymentPlan.firstPaymentDate
      )
    }

    if (draft.courtDetermination.disposableIncome <= 0) {
      return PaymentPlanHelper.createPaymentPlanFromStartDate(MomentFactory.maxDate())
    }

    if (paymentIntention.paymentOption === PaymentOption.BY_SPECIFIED_DATE) {
      const instalmentAmount: number = draft.courtDetermination.disposableIncome / Frequency.WEEKLY.monthlyRatio
      return PaymentPlanHelper.createPaymentPlanFromInstallment(totalAmount, instalmentAmount, Frequency.WEEKLY, calculateMonthIncrement(MomentFactory.currentDate()))
    }
  }

  static createPaymentPlanFromForm (paymentPlanForm: FormPaymentPlan): PaymentPlan {
    if (!paymentPlanForm) {
      return undefined
    }

    return PaymentPlanHelper.createPaymentPlanFromInstallment(
      paymentPlanForm.totalAmount,
      paymentPlanForm.instalmentAmount,
      paymentPlanForm.paymentSchedule ? Frequency.of(paymentPlanForm.paymentSchedule.value) : undefined,
      paymentPlanForm.firstPaymentDate ? paymentPlanForm.firstPaymentDate.toMoment() : undefined)
  }

  context('render frequency', () => {
    Frequency.all()
      .forEach(frequency => {
        it(`should render ${frequency} as ${frequency.displayValue}`, () => {
          expect(FrequencyViewFilter.render(frequency)).to.equal(frequency.displayValue)
        })
      })

    it('should throw an error for null', () => {
      expect(() => FrequencyViewFilter.render(null)).to.throw(TypeError)
    })
  })

  private static createPaymentPlanFromDraftPaymentIntention (paymentIntention: PaymentIntention): PaymentPlan {
    const paymentPlan: DraftPaymentPlan = paymentIntention.paymentPlan
    if (!paymentPlan) {
      return undefined
    }

    return PaymentPlanHelper.createPaymentPlanFromInstallment(
      paymentPlan.totalAmount,
      paymentPlan.instalmentAmount,
      paymentPlan.paymentSchedule ? Frequency.of(paymentPlan.paymentSchedule.value) : undefined,
      paymentPlan.firstPaymentDate ? paymentPlan.firstPaymentDate.toMoment() : undefined
    )
  }