Mark for supplementary billing service and unit tests

app/presenters/licences/supplementary/mark-for-supplementary-billing.presenter.js

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+'use strict'
+
+/**
+ * Formats the two part tariff review data ready for presenting in the amend adjustment factor page
+ * @module MarkForSupplementaryBillingPresenter
+ */
+
+const { formatFinancialYear } = require('../../base.presenter.js')
+
+function go (licence) {
+  return {
+    licenceId: licence.id,
+    licenceRef: licence.licenceRef,
+    financialYears: _yearsToDisplay()
+  }
+}
+
+function _yearsToDisplay () {
+  const currentDate = new Date()
+  const currentYear = currentDate.getFullYear()
+  const currentMonth = currentDate.getMonth()
+  const years = []
+  let preSrocYears = false
+
+  // Determine the financial year we are in
+  const financialYearEnd = (currentMonth >= 3) ? currentYear + 1 : currentYear
+
+  for (let i = 0; i < 6; i++) {
+    const year = financialYearEnd - i
+
+    if (year > 2022) {
+      years.push({
+        text: `${formatFinancialYear(year)}`,
+        value: year
+      })
+    } else if (!preSrocYears) {
+      years.push({
+        text: 'Before 2022',
+        value: 'preSroc',
+        hint: {
+          text: 'Old charge scheme'
+        }
+      })
+
+      preSrocYears = true
+    }
+  }
+
+  return years
+}
+
+module.exports = {
+  go
+}

app/services/licences/supplementary/mark-for-supplementary-billing.service.js

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+'use strict'
+
+/**
+ * Orchestrates flagging a licence for supplementary billing
+ * @module MarkForSupplementaryBillingService
+ */
+
+const LicenceModel = require('../../../../app/models/licence.model.js')
+const MarkForSupplementaryBillingPresenter = require('../../../presenters/licences/supplementary/mark-for-supplementary-billing.presenter.js')
+
+/**
+ * Orchestrates fetching and presenting the data needed for the licence mark for supplementary billing page
+ *
+ * @param {string} licenceId - the UUID of the licence being flagged for supplementary billing
+ *
+ * @returns {Promise<object>} an object representing the `pageData` needed by the mark for supplementary billing page.
+ * It contains details of the last 6 years from todays date and the licence details.
+ */
+async function go (licenceId) {
+  const licenceData = await _fetchLicenceData(licenceId)
+
+  const pageData = MarkForSupplementaryBillingPresenter.go(licenceData)
+
+  return pageData
+}
+
+async function _fetchLicenceData (licenceId) {
+  return LicenceModel.query()
+    .findById(licenceId)
+    .select([
+      'id',
+      'licenceRef'
+    ])
+}
+
+module.exports = {
+  go
+}