uktrade · paulgain · Aug 9, 2024 · Jul 18, 2024 · Jul 17, 2024 · Jul 18, 2024
@@ -192,6 +192,7 @@
     "http-server": "^14.1.1",
     "image-minimizer-webpack-plugin": "^4.1.0",
     "js-beautify": "^1.14.11",
+    "js-cookie": "^3.0.5",
     "jsdom": "^20.0.3",
     "jsdom-global": "^3.0.2",
     "json-schema-faker": "^0.5.5",

@@ -14,6 +14,7 @@
         padding: 0;
       }
     </style>
+    {% include "_includes/google-tag-manager-snippet.njk" %}
   </head>
   <body>
     {% include "_includes/csp-nonce.njk" %}

@@ -0,0 +1,28 @@
+import { TASK__START } from '../../actions'
+import multiinstance from '../../utils/multiinstance'
+
+export default multiinstance({
+  name: 'Task/RecentResult',
+  actionPattern: /.*/,
+  idProp: 'name',
+  reducer: (state, { type, id, onSuccessDispatch, result }) => {
+    switch (type) {
+      case TASK__START:
+        return {
+          ...state,
+          [id]: {
+            ...state?.[id],
+            successActionType: onSuccessDispatch,
+          },
+        }
+      case state?.[id]?.successActionType:
+        return {
+          ...state,
+          [id]: { result },
+        }
+      default:
+        return state
+    }
+  },
+  component: ({ children, id, ...props }) => children(props[id]?.result),
+})
@@ -1,6 +1,7 @@
 import './webpack-csp-nonce'
 import React from 'react'
 import { createRoot } from 'react-dom/client'
+import { Routes, Route } from 'react-router-dom'
 
 import { createProvider } from './createProvider'
 import WithoutOurSupport from './components/Resource/WithoutOurSupport'
@@ -11,6 +12,10 @@ import MarketingSource from './components/Resource/MarketingSource'
 
 import Review from './modules/ExportWins/Review'
 import { patchExportWinReview } from './modules/ExportWins/tasks'
+import {
+  loadCookiePreference,
+  saveCookiePreference,
+} from './modules/ExportWins/Review/CookiePage/tasks'
 
 const Provider = createProvider({
   ...ExportWinReview.tasks,
@@ -19,12 +24,16 @@ const Provider = createProvider({
   ...Experience.tasks,
   ...MarketingSource.tasks,
   TASK_PATCH_EXPORT_WIN_REVIEW: patchExportWinReview,
+  'load cookie preference': loadCookiePreference,
+  'save cookie preference': saveCookiePreference,
 })
 
 window.addEventListener('DOMContentLoaded', () => {
   createRoot(document.getElementById('react-app')).render(
     <Provider>
-      <Review />
+      <Routes>
+        <Route path="/exportwins/review*" element={<Review />} />
+      </Routes>
     </Provider>
   )
 })
@@ -0,0 +1,55 @@
+import React from 'react'
+import { H2 } from 'govuk-react'
+
+import { FieldRadios, Form } from '../../../../components'
+import Layout from '../Layout'
+
+const CookiePage = () => (
+  <Layout title="Export Wins cookie policy">
+    <H2>How cookies are used in Export Wins</H2>
+    <p>Export wins puts small files (known as 'cookies') onto your computer.</p>
+    <p>
+      Cookies are used to measure how to use the website so it can be updated
+      and improved based on your needs.
+    </p>
+    <p>
+      Export Wins cookies never contain personally identifiable information.
+    </p>
+    <H2>Analytics cookies</H2>
+    <p>
+      We use Google Analytics software to collect information about how you use
+      Export Wins. We do this to help make sure the site is meeting the needs of
+      its users and to help us make improvements. Google Analytics stores
+      information about:
+    </p>
+    <ul>
+      <li>the pages you visit</li>
+      <li>how long you spend on each page</li>
+      <li>how you got to the site</li>
+      <li>what you click on while you're visiting the site</li>
+    </ul>
+    <p>We don't allow Google to use or share our analytics data.</p>
+    <Form
+      analyticsFormName="cookie-page-form"
+      id="cookieConsent"
+      submissionTaskName="save cookie preference"
+      initialValuesTaskName="load cookie preference"
+      submissionTaskResultToValues={(cookieConsent) => ({ cookieConsent })}
+      transformInitialValues={(cookieConsent) => ({ cookieConsent })}
+      transformPayload={({ cookieConsent }) => cookieConsent}
+      submitButtonLabel="Save cookie settings"
+    >
+      <FieldRadios
+        label="Do you want to accept analytics cookies?"
+        name="cookieConsent"
+        required="Choose one option"
+        options={[
+          { label: 'Yes', value: 'granted' },
+          { label: 'No', value: 'denied' },
+        ]}
+      />
+    </Form>
+  </Layout>
+)
+
+export default CookiePage
@@ -0,0 +1,26 @@
+import { put, take } from 'redux-saga/effects'
+import { eventChannel } from 'redux-saga'
+
+const storageChannel = eventChannel((emit) => {
+  window.addEventListener('storage', emit)
+  return () => window.removeEventListener(emit)
+})
+
+/**
+ * This ensures that when the user sets their cookie prefference
+ * in one browser tab, all the other tabs will pick up the change.
+ */
+// TODO: Once Redux state is persisted in session storage, this should not be needed
+export function* cookiePreferenceChangeSaga() {
+  while (true) {
+    const { key, newValue } = yield take(storageChannel)
+    if (key === 'cookie-consent') {
+      yield put({
+        type: 'RESOURCE',
+        name: 'load cookie preference',
+        id: 'cookieConsent',
+        result: newValue,
+      })
+    }
+  }
+}
@@ -0,0 +1,33 @@
+import Cookies from 'js-cookie'
+
+export const COOKIE_CONSENT_COOKIE_NAME = 'cookie-consent'
+export const GRANTED = 'granted'
+export const DENIED = 'denied'
+
+export const loadCookiePreference = () =>
+  localStorage.getItem(COOKIE_CONSENT_COOKIE_NAME)
+
+export const saveCookiePreference = (payload) => {
+  if (!window.gtag) {
+    throw Error(
+      'window.gtag not defined, you probably forgot to set the GOOGLE_TAG_MANAGER_KEY env var.'
+    )
+  }
+  if (![GRANTED, DENIED].includes(payload)) {
+    throw Error('Payload must be "granted" or "denied"')
+  }
+
+  localStorage.setItem(COOKIE_CONSENT_COOKIE_NAME, payload)
+
+  window.gtag('consent', 'update', {
+    analytics_storage: payload,
+  })
+
+  if (payload === DENIED) {
+    for (const cookieName in Cookies.get()) {
+      Cookies.remove(cookieName)
+    }
+  }
+
+  return payload
+}
@@ -1,17 +1,23 @@
 import React from 'react'
 import styled from 'styled-components'
-import { H1 } from 'govuk-react'
+import { Button, H1, H2, Link } from 'govuk-react'
 import { FONT_SIZE, FONT_WEIGHTS, SPACING } from '@govuk-react/constants'
 
+import RecentTaskResult from '../../../components/Task/RecentResult'
+import { StyledStatusMessage } from './ThankYou'
+import { FormActions } from '../../../components'
 import Footer from '../../../components/Footer'
-import { BLACK, WHITE, LIGHT_GREY } from '../../../utils/colours'
+import Task from '../../../components/Task'
+import Resource from '../../../components/Resource/Resource'
+import { BLACK, WHITE, LIGHT_GREY, GREEN } from '../../../utils/colours'
 
 const Grid = styled.div({
   minHeight: '100vh',
   display: 'grid',
-  gridTemplateRows: 'auto auto 1fr minmax(min-content, 30px)',
+  gridTemplateRows: 'auto auto auto 1fr minmax(min-content, 30px)',
   gridTemplateColumns: `1fr min(100vw, calc(960px + ${SPACING.SCALE_3} * 2)) 1fr`,
   gridTemplateAreas: `
+    ". cookie-banner ." 
     ". main-bar ."
     ". header ."
     ". main ."
@@ -62,14 +68,87 @@ const Title = styled(H1)({
   marginBottom: SPACING.SCALE_5,
 })
 
+const CookieBannerBackground = styled.div({
+  gridRow: 'cookie-banner',
+  gridColumn: '1 / -1',
+  background: '#f3f2f1',
+})
+
+const CookieBanner = styled.div({
+  gridArea: 'cookie-banner',
+  paddingTop: SPACING.SCALE_3,
+})
+
+const CookieConsentConfirmation = () => (
+  <RecentTaskResult name="save cookie preference" id="cookieConsent">
+    {(consent) =>
+      consent && (
+        <StyledStatusMessage colour={GREEN}>
+          You've {consent === 'granted' ? 'accepted' : 'rejected'} additional
+          cookies. You can change your cookie settings at any time.
+        </StyledStatusMessage>
+      )
+    }
+  </RecentTaskResult>
+)
+
 const Layout = ({ children, title, supertitle, headingContent }) => (
   <Grid>
+    <CookieBannerBackground />
+    <Resource name="load cookie preference" id="cookieConsent">
+      {(persistedConsent) => (
+        <RecentTaskResult name="save cookie preference" id="cookieConsent">
+          {(updatedConsent) =>
+            !persistedConsent &&
+            !updatedConsent && (
+              <CookieBanner>
+                <H2>Cookies</H2>
+                <p>
+                  We’d like to use analytics cookies so we can understand how
+                  you use the Design System and make improvements.
+                </p>
+                <p>
+                  We also use essential cookies to remember if you’ve accepted
+                  analytics cookies.
+                </p>
+                <FormActions>
+                  <Task>
+                    {(getTask) => {
+                      const setPreference = (value) =>
+                        getTask(
+                          'save cookie preference',
+                          'cookieConsent'
+                        ).start({
+                          payload: value,
+                          onSuccessDispatch: 'FORM__RESOLVED',
+                        })
+                      return (
+                        <>
+                          <Button onClick={() => setPreference('granted')}>
+                            Accept analytics cookies
+                          </Button>
+                          <Button onClick={() => setPreference('denied')}>
+                            Reject analytics cookies
+                          </Button>
+                        </>
+                      )
+                    }}
+                  </Task>
+                  <Link href="/exportwins/review/cookies">View cookies</Link>
+                </FormActions>
+              </CookieBanner>
+            )
+          }
+        </RecentTaskResult>
+      )}
+    </Resource>
     <MainBarBackground />
     <MainBar>Department for Business & Trade</MainBar>
     <HeaderBackground />
     <Header>
       <p>{supertitle}</p>
       <Title>{title}</Title>
+      <CookieConsentConfirmation />
       {headingContent}
     </Header>
     <Main>{children}</Main>
@@ -78,6 +157,7 @@ const Layout = ({ children, title, supertitle, headingContent }) => (
         'Privacy Policy':
           'https://www.great.gov.uk/privacy-and-cookies/full-privacy-notice/',
         'Accessibility Statement': '/exportwins/review/accesibility-statement',
+        Cookies: '/exportwins/review/cookies',
       }}
     />
   </Grid>

@@ -7,7 +7,7 @@ import { StatusMessage } from '../../../components'
 
 import Layout from './Layout'
 
-const StyledStatusMessage = styled(StatusMessage)({
+export const StyledStatusMessage = styled(StatusMessage)({
   background: WHITE,
   '& > *:first-child': {
     marginTop: 0,

@@ -8,6 +8,7 @@ import styled from 'styled-components'
 import HR from '../../../components/HR'
 
 import ThankYou from './ThankYou'
+import CookiePage from './CookiePage'
 
 import Layout from './Layout'
 import {
@@ -375,7 +376,7 @@ const Review = () => {
             submissionTaskName="TASK_PATCH_EXPORT_WIN_REVIEW"
             redirectMode="soft"
             redirectTo={(_, { agree_with_win }) =>
-              `/exportwins/review-win/thankyou?agree=${agree_with_win}`
+              `../thankyou?agree=${agree_with_win}`
             }
             transformPayload={transformPayload(token)}
           >
@@ -398,11 +399,9 @@ const Review = () => {
 
 export default () => (
   <Routes>
-    <Route
-      path="/exportwins/review/accesibility-statement"
-      element={<AccesibilityStatement />}
-    />
-    <Route path="/exportwins/review/:token" element={<Review />} />
-    <Route path="/exportwins/review-win/thankyou" element={<ThankYou />} />
+    <Route path="/accesibility-statement" element={<AccesibilityStatement />} />
+    <Route path="/thankyou" element={<ThankYou />} />
+    <Route path="/cookies" element={<CookiePage />} />
+    <Route path="/:token" element={<Review />} />
   </Routes>
 )
@@ -190,6 +190,8 @@ import companyActivityReducerNoAs from './modules/Companies/CompanyActivity/redu
 
 import { ResendExportWin } from './modules/ExportWins/Form/ResendExportWin'
 
+import RecentTaskResult from './components/Task/RecentResult'
+
 export const reducers = {
   tasks,
   [FLASH_MESSAGE_ID]: flashMessageReducer,
@@ -211,6 +213,7 @@ export const reducers = {
   ...Form.reducerSpread,
   ...FieldAddAnother.reducerSpread,
   ...ResendExportWin.reducerSpread,
+  ...RecentTaskResult.reducerSpread,
   [DNB_CHECK_ID]: dnbCheckReducer,
   [INVESTMENT_OPPORTUNITIES_LIST_ID]: investmentOpportunitiesListReducer,
   [INVESTMENT_OPPORTUNITIES_DETAILS_ID]: investmentOpportunitiesDetailsReducer,