enableFor (app: express.Express) {
    if (app.settings.nunjucksEnv && app.settings.nunjucksEnv.globals) {
      app.settings.nunjucksEnv.globals.FullAdmissionPaths = FullAdmissionPaths
      app.settings.nunjucksEnv.globals.PartAdmissionPaths = PartAdmissionPaths
      app.settings.nunjucksEnv.globals.StatementOfMeansPaths = StatementOfMeansPaths
      app.settings.nunjucksEnv.globals.DefenceType = DefenceType
      app.settings.nunjucksEnv.globals.FreeMediationOption = FreeMediationOption
      app.settings.nunjucksEnv.globals.domain = {
        ResponseType: ResponseType,
        PaymentOption: PaymentOption,
        PaymentSchedule: PaymentSchedule
      }
    }

    const allResponseRoutes = '/case/*/response/*'

    app.all(allResponseRoutes, defendantResponseRequestHandler())
    app.all(allResponseRoutes, ClaimMiddleware.retrieveByExternalId)
    app.all(/^\/case\/.+\/response\/(?!receipt|summary|claim-details).*$/, OnlyDefendantLinkedToClaimCanDoIt.check())
    app.all(
      /^\/case\/.+\/response\/(?!confirmation|counter-claim|receipt|summary|claim-details).*$/,
      ResponseGuard.checkResponseDoesNotExist()
    )
    app.all('/case/*/response/summary', OnlyClaimantLinkedToClaimCanDoIt.check(), ResponseGuard.checkResponseExists())
    app.all(/^\/case\/.*\/response\/(?!claim-details).*$/, CountyCourtJudgmentRequestedGuard.requestHandler)
    app.all(/^\/case\/.*\/response\/statement-of-means\/.*/, OptInFeatureToggleGuard.featureEnabledGuard('admissions'))
    app.all(/^\/case\/.+\/response\/(?!confirmation|receipt|summary).*$/,
      DraftMiddleware.requestHandler(new DraftService(), 'response', 100, (value: any): ResponseDraft => {
        return new ResponseDraft().deserialize(value)
      }),
      (req: express.Request, res: express.Response, next: express.NextFunction) => {
        res.locals.draft = res.locals.responseDraft
        next()
      },
      initiatePartyFromClaimHandler
    )
    app.all(/^\/case\/.+\/response\/task-list|check-and-send|incomplete-submission.*$/,
      DraftMiddleware.requestHandler(new DraftService(), 'mediation', 100, (value: any): MediationDraft => {
        return new MediationDraft().deserialize(value)
      }))
    app.use('/', RouterFinder.findAll(path.join(__dirname, 'routes')))
  }

import { partialAdmissionPath, Paths } from 'response/paths'

class ModelAccessor extends AbstractModelAccessor<ResponseDraft, PaymentIntention> {
  get (draft: ResponseDraft): PaymentIntention {
    return draft.partialAdmission.paymentIntention
  }

  set (draft: ResponseDraft, model: PaymentIntention): void {
    draft.partialAdmission.paymentIntention = model
  }
}

class PaymentDatePage extends AbstractPaymentDatePage<ResponseDraft> {
  getHeading (): string {
    return 'What date will you pay on?'
  }

  createModelAccessor (): AbstractModelAccessor<ResponseDraft, PaymentIntention> {
    return new ModelAccessor()
  }

  buildPostSubmissionUri (req: express.Request, res: express.Response): string {
    const { externalId } = req.params
    return Paths.taskListPage.evaluateUri({ externalId: externalId })
  }
}

/* tslint:disable:no-default-export */
export default new PaymentDatePage()
  .buildRouter(partialAdmissionPath, OptInFeatureToggleGuard.featureEnabledGuard('admissions'))

function renderView (form: Form<HowMuchHaveYouPaid>, res: express.Response) {
  const pastDate: Moment = MomentFactory.currentDate().subtract(3, 'months')

  res.render(page.associatedView, {
    form: form,
    totalAmount: res.locals.claim.totalAmountTillToday,
    pastDate
  })
}

/* tslint:disable:no-default-export */
export default express.Router()
  .get(
    page.uri,
    PartialAdmissionGuard.requestHandler(),
    OptInFeatureToggleGuard.featureEnabledGuard('admissions'),
    ErrorHandling.apply(async (req: express.Request, res: express.Response, next: express.NextFunction) => {
      const draft: Draft<ResponseDraft> = res.locals.responseDraft
      renderView(new Form(draft.document.partialAdmission.howMuchHaveYouPaid), res)
    }))
  .post(
    page.uri,
    PartialAdmissionGuard.requestHandler(),
    OptInFeatureToggleGuard.featureEnabledGuard('admissions'),
    FormValidator.requestHandler(HowMuchHaveYouPaid, HowMuchHaveYouPaid.fromObject),
    ErrorHandling.apply(async (req: express.Request, res: express.Response, next: express.NextFunction): Promise<void> => {
      const form: Form<HowMuchHaveYouPaid> = req.body

      if (form.hasErrors()) {
        renderView(form, res)
      } else {

  buildPostSubmissionUri (path: string, req: express.Request, res: express.Response): string {
    const model: PaymentOption = req.body.model

    if (model.isOfType(PaymentType.INSTALMENTS)) {
      return this.buildTaskListUri(req, res)
    }

    return super.buildPostSubmissionUri(path, req, res)
  }

  buildTaskListUri (req: express.Request, res: express.Response): string {
    const { externalId } = req.params
    return Paths.taskListPage.evaluateUri({ externalId: externalId })
  }
}

const setHowMuchDoYouOweAmount = (req: express.Request, res: express.Response, next: express.NextFunction) => {
  const draft: ResponseDraft = res.locals.responseDraft.document

  if (draft.isResponsePartiallyAdmitted() && draft.partialAdmission.howMuchDoYouOwe) {
    res.locals.amount = draft.partialAdmission.howMuchDoYouOwe.amount || 0
  }

  next()
}

/* tslint:disable:no-default-export */
export default new PaymentOptionPage()
  .buildRouter(partialAdmissionPath, OptInFeatureToggleGuard.featureEnabledGuard('admissions'), setHowMuchDoYouOweAmount)