feat(parental-leave): Allow specific number of days from actual birth…

… date (#17010)

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

libs/application/template-api-modules/src/lib/modules/templates/parental-leave/parental-leave.service.spec.ts

@@ -284,6 +284,95 @@ describe('ParentalLeaveService', () => {
         },
       ])
     })
+    it('Should return date_of_birth_months if actualDateOfBirth, useLength is NO and endDateAdjustLength includes YES', async () => {
+      const application = createApplication()
+
+      set(application, 'answers.periods', [
+        {
+          ratio: '100',
+          endDate: '2025-07-16',
+          startDate: '2025-07-02',
+          useLength: 'no',
+          firstPeriodStart: 'actualDateOfBirth',
+          endDateAdjustLength: ['yes'],
+        },
+        {
+          ratio: '100',
+          endDate: '2025-07-31',
+          startDate: '2025-07-17',
+          useLength: 'no',
+          firstPeriodStart: 'specificDate',
+        },
+      ])
+      const periods = get(application.answers, 'periods') as object as Period[]
+      const rights = 'M-S-GR,ORLOF-FBF'
+
+      const res = parentalLeaveService.createPeriodsDTO(periods, true, rights)
+
+      expect(res).toEqual([
+        {
+          from: 'date_of_birth_months',
+          to: '2025-07-16',
+          ratio: 'D15',
+          approved: false,
+          paid: false,
+          rightsCodePeriod: rights,
+        },
+        {
+          from: '2025-07-17',
+          to: '2025-07-31',
+          ratio: 'D14',
+          approved: false,
+          paid: false,
+          rightsCodePeriod: rights,
+        },
+      ])
+    })
+
+    it('Should return date_of_birth if actualDateOfBirth, useLength is NO and endDateAdjustLength does not include YES', async () => {
+      const application = createApplication()
+
+      set(application, 'answers.periods', [
+        {
+          ratio: '100',
+          endDate: '2025-07-16',
+          startDate: '2025-07-02',
+          useLength: 'no',
+          firstPeriodStart: 'actualDateOfBirth',
+          endDateAdjustLength: [],
+        },
+        {
+          ratio: '100',
+          endDate: '2025-07-31',
+          startDate: '2025-07-17',
+          useLength: 'no',
+          firstPeriodStart: 'specificDate',
+        },
+      ])
+      const periods = get(application.answers, 'periods') as object as Period[]
+      const rights = 'M-S-GR,ORLOF-FBF'
+
+      const res = parentalLeaveService.createPeriodsDTO(periods, true, rights)
+
+      expect(res).toEqual([
+        {
+          from: 'date_of_birth',
+          to: '2025-07-16',
+          ratio: 'D15',
+          approved: false,
+          paid: false,
+          rightsCodePeriod: rights,
+        },
+        {
+          from: '2025-07-17',
+          to: '2025-07-31',
+          ratio: 'D14',
+          approved: false,
+          paid: false,
+          rightsCodePeriod: rights,
+        },
+      ])
+    })
   })
 
   describe('createRightsDTO', () => {

libs/application/template-api-modules/src/lib/modules/templates/parental-leave/parental-leave.service.ts

@@ -849,6 +849,7 @@ export class ParentalLeaveService extends BaseTemplateApiService {
           isFirstPeriod,
           isActualDateOfBirth,
           period.useLength || '',
+          period.endDateAdjustLength?.includes(YES) || false,
           period,
         ),
         to: period.endDate,

libs/application/template-api-modules/src/lib/modules/templates/parental-leave/parental-leave.utils.ts

@@ -538,9 +538,12 @@ export const getFromDate = (
   isFirstPeriod: boolean,
   isActualDateOfBirth: boolean,
   useLength: string,
+  endDateAdjustLength: boolean,
   period: AnswerPeriod,
 ) => {
-  return isFirstPeriod && isActualDateOfBirth && useLength === YES
+  return isFirstPeriod &&
+    isActualDateOfBirth &&
+    (useLength === YES || (useLength === NO && endDateAdjustLength))
     ? apiConstants.actualDateOfBirthMonths
     : isFirstPeriod && isActualDateOfBirth
     ? apiConstants.actualDateOfBirth

libs/application/templates/parental-leave/src/fields/PeriodEndDate/PeriodEndDate.tsx

@@ -5,6 +5,7 @@ import {
   NO_ANSWER,
   extractRepeaterIndexFromField,
   getErrorViaPath,
+  getValueViaPath,
 } from '@island.is/application/core'
 import {
   FieldBaseProps,
@@ -13,12 +14,16 @@ import {
   FieldTypes,
   MaybeWithApplicationAndField,
 } from '@island.is/application/types'
-import { DateFormField } from '@island.is/application/ui-fields'
+import {
+  DateFormField,
+  CheckboxFormField,
+} from '@island.is/application/ui-fields'
 import { useLocale } from '@island.is/localization'
 import { FieldDescription } from '@island.is/shared/form-fields'
 import { Box } from '@island.is/island-ui/core'
 
 import { parentalLeaveFormMessages } from '../../lib/messages'
+import { YES, StartDateOptions } from '../../constants'
 
 type FieldPeriodEndDateProps = {
   field: {
@@ -38,6 +43,11 @@ export const PeriodEndDate: FC<
   const { title, props } = field
   const currentIndex = extractRepeaterIndexFromField(field)
   const fieldId = `periods[${currentIndex}].endDate`
+  const lengthFieldId = `periods[${currentIndex}].endDateAdjustLength`
+  const currentFirstPeriodStart = getValueViaPath(
+    application.answers,
+    `periods[${currentIndex}].firstPeriodStart`,
+  ) as StartDateOptions
   const error = getErrorViaPath(errors as FieldErrors<FieldValues>, fieldId)
 
   useEffect(() => {
@@ -79,6 +89,28 @@ export const PeriodEndDate: FC<
           defaultValue: NO_ANSWER,
         }}
       />
+      {currentFirstPeriodStart === StartDateOptions.ACTUAL_DATE_OF_BIRTH && (
+        <CheckboxFormField
+          application={application}
+          field={{
+            type: FieldTypes.CHECKBOX,
+            component: FieldComponents.CHECKBOX,
+            title: '',
+            id: lengthFieldId,
+            children: undefined,
+            backgroundColor: 'blue',
+            width: 'full',
+            large: true,
+            defaultValue: [YES],
+            options: [
+              {
+                value: YES,
+                label: parentalLeaveFormMessages.endDate.adjustPeriodLength,
+              },
+            ],
+          }}
+        />
+      )}
     </>
   )
 }

libs/application/templates/parental-leave/src/lib/messages.ts

@@ -1361,6 +1361,13 @@ export const parentalLeaveFormMessages = {
       defaultMessage: 'Veldu lokadag tímabilsins',
       description: 'Pick the end date',
     },
+    adjustPeriodLength: {
+      id: 'pl.application:end.date.adjust.period.length',
+      defaultMessage:
+        'Ef barnið fæðist á annarri dagsetningu en áætlað er óska ég eftir að lengd tímabilsins aðlagist út frá raunverulegum fæðingardegi barnsins.',
+      description:
+        "If the child is born on a different date than estimated, I request that the period length be adjusted based on the child's actual date of birth.",
+    },
   }),
 
   startDate: defineMessages({

libs/application/templates/parental-leave/src/types.ts

@@ -81,6 +81,7 @@ export interface Period {
   paid?: boolean
   approved?: boolean
   months?: number
+  endDateAdjustLength?: string[]
 }
 
 export interface Payment {