feat: AA-1205: Enable Entrance Exam support for Learning MFE (#840)

Adds an alert to the courseware if the section is an Entrance Exam. Also
adds a listener to reload the page upon receiving a message from the LMS
indicating the user has now passed the exam.

Commit also contains misc. clean up for i18n messages switching to variable names.

src/alerts/sequence-alerts/hooks.js

@@ -0,0 +1,56 @@
+import { useSelector } from 'react-redux';
+
+import { useModel } from '../../generic/model-store';
+import { ALERT_TYPES, useAlert } from '../../generic/user-messages';
+
+import messages from './messages';
+
+function useSequenceBannerTextAlert(sequenceId) {
+  const sequence = useModel('sequences', sequenceId);
+  const sequenceStatus = useSelector(state => state.courseware.sequenceStatus);
+
+  // Show Alert that comes along with the sequence
+  useAlert(sequenceStatus === 'loaded' && sequence.bannerText, {
+    code: null,
+    dismissible: false,
+    text: sequence.bannerText,
+    type: ALERT_TYPES.INFO,
+    topic: 'sequence',
+  });
+}
+
+function useSequenceEntranceExamAlert(courseId, sequenceId, intl) {
+  const course = useModel('coursewareMeta', courseId);
+  const sequence = useModel('sequences', sequenceId);
+  const sequenceStatus = useSelector(state => state.courseware.sequenceStatus);
+  const {
+    entranceExamCurrentScore,
+    entranceExamEnabled,
+    entranceExamId,
+    entranceExamMinimumScorePct,
+    entranceExamPassed,
+  } = course.entranceExamData || {};
+  const entranceExamAlertVisible = sequenceStatus === 'loaded' && entranceExamEnabled && entranceExamId === sequence.sectionId;
+  let entranceExamText;
+
+  if (entranceExamPassed) {
+    entranceExamText = intl.formatMessage(
+      messages.entranceExamTextPassed, { entranceExamCurrentScore: entranceExamCurrentScore * 100 },
+    );
+  } else {
+    entranceExamText = intl.formatMessage(messages.entranceExamTextNotPassing, {
+      entranceExamCurrentScore: entranceExamCurrentScore * 100,
+      entranceExamMinimumScorePct: entranceExamMinimumScorePct * 100,
+    });
+  }
+
+  useAlert(entranceExamAlertVisible, {
+    code: null,
+    dismissible: false,
+    text: entranceExamText,
+    type: ALERT_TYPES.INFO,
+    topic: 'sequence',
+  });
+}
+
+export { useSequenceBannerTextAlert, useSequenceEntranceExamAlert };

src/alerts/sequence-alerts/messages.js

@@ -0,0 +1,14 @@
+import { defineMessages } from '@edx/frontend-platform/i18n';
+
+const messages = defineMessages({
+  entranceExamTextNotPassing: {
+    id: 'learn.sequence.entranceExamTextNotPassing',
+    defaultMessage: 'To access course materials, you must score {entranceExamMinimumScorePct}% or higher on this exam. Your current score is {entranceExamCurrentScore}%.',
+  },
+  entranceExamTextPassed: {
+    id: 'learn.sequence.entranceExamTextPassed',
+    defaultMessage: 'Your score is {entranceExamCurrentScore}%. You have passed the entrance exam.',
+  },
+});
+
+export default messages;

src/courseware/course/Course.test.jsx

@@ -220,4 +220,94 @@ describe('Course', () => {
     expect(nextSequenceHandler).not.toHaveBeenCalled();
     expect(unitNavigationHandler).toHaveBeenCalledTimes(4);
   });
+
+  describe('Sequence alerts display', () => {
+    it('renders banner text alert', async () => {
+      const courseMetadata = Factory.build('courseMetadata');
+      const sequenceBlocks = [Factory.build(
+        'block', { type: 'sequential', banner_text: 'Some random banner text to display.' },
+      )];
+      const sequenceMetadata = [Factory.build(
+        'sequenceMetadata', { banner_text: sequenceBlocks[0].banner_text },
+        { courseId: courseMetadata.id, sequenceBlock: sequenceBlocks[0] },
+      )];
+
+      const testStore = await initializeTestStore({ courseMetadata, sequenceBlocks, sequenceMetadata });
+      const testData = {
+        ...mockData,
+        courseId: courseMetadata.id,
+        sequenceId: sequenceBlocks[0].id,
+      };
+      render(<Course {...testData} />, { store: testStore });
+      await waitFor(() => expect(screen.getByText('Some random banner text to display.')).toBeInTheDocument());
+    });
+
+    it('renders Entrance Exam alert with passing score', async () => {
+      const sectionId = 'block-v1:edX+DemoX+Demo_Course+type@chapter+block@entrance_exam';
+      const testCourseMetadata = Factory.build('courseMetadata', {
+        entrance_exam_data: {
+          entrance_exam_current_score: 1.0,
+          entrance_exam_enabled: true,
+          entrance_exam_id: sectionId,
+          entrance_exam_minimum_score_pct: 0.7,
+          entrance_exam_passed: true,
+        },
+      });
+      const sequenceBlocks = [Factory.build(
+        'block',
+        { type: 'sequential', sectionId },
+        { courseId: testCourseMetadata.id },
+      )];
+      const sectionBlocks = [Factory.build(
+        'block',
+        { type: 'chapter', children: sequenceBlocks.map(block => block.id), id: sectionId },
+        { courseId: testCourseMetadata.id },
+      )];
+
+      const testStore = await initializeTestStore({
+        courseMetadata: testCourseMetadata, sequenceBlocks, sectionBlocks,
+      });
+      const testData = {
+        ...mockData,
+        courseId: testCourseMetadata.id,
+        sequenceId: sequenceBlocks[0].id,
+      };
+      render(<Course {...testData} />, { store: testStore });
+      await waitFor(() => expect(screen.getByText('Your score is 100%. You have passed the entrance exam.')).toBeInTheDocument());
+    });
+
+    it('renders Entrance Exam alert with non-passing score', async () => {
+      const sectionId = 'block-v1:edX+DemoX+Demo_Course+type@chapter+block@entrance_exam';
+      const testCourseMetadata = Factory.build('courseMetadata', {
+        entrance_exam_data: {
+          entrance_exam_current_score: 0.3,
+          entrance_exam_enabled: true,
+          entrance_exam_id: sectionId,
+          entrance_exam_minimum_score_pct: 0.7,
+          entrance_exam_passed: false,
+        },
+      });
+      const sequenceBlocks = [Factory.build(
+        'block',
+        { type: 'sequential', sectionId },
+        { courseId: testCourseMetadata.id },
+      )];
+      const sectionBlocks = [Factory.build(
+        'block',
+        { type: 'chapter', children: sequenceBlocks.map(block => block.id), id: sectionId },
+        { courseId: testCourseMetadata.id },
+      )];
+
+      const testStore = await initializeTestStore({
+        courseMetadata: testCourseMetadata, sequenceBlocks, sectionBlocks,
+      });
+      const testData = {
+        ...mockData,
+        courseId: testCourseMetadata.id,
+        sequenceId: sequenceBlocks[0].id,
+      };
+      render(<Course {...testData} />, { store: testStore });
+      await waitFor(() => expect(screen.getByText('To access course materials, you must score 70% or higher on this exam. Your current score is 30%.')).toBeInTheDocument());
+    });
+  });
 });

src/courseware/course/sequence/Sequence.jsx

@@ -1,6 +1,6 @@
 /* eslint-disable no-use-before-define */
 import React, {
-  useEffect, useContext, useState,
+  useEffect, useState,
 } from 'react';
 import PropTypes from 'prop-types';
 import classNames from 'classnames';
@@ -15,8 +15,8 @@ import SequenceExamWrapper from '@edx/frontend-lib-special-exams';
 import { breakpoints, useWindowSize } from '@edx/paragon';
 
 import PageLoading from '../../../generic/PageLoading';
-import { UserMessagesContext, ALERT_TYPES } from '../../../generic/user-messages';
 import { useModel } from '../../../generic/model-store';
+import { useSequenceBannerTextAlert, useSequenceEntranceExamAlert } from '../../../alerts/sequence-alerts/hooks';
 
 import CourseLicense from '../course-license';
 import Sidebar from '../sidebar/Sidebar';
@@ -89,26 +89,20 @@ function Sequence({
     sendTrackingLogEvent(eventName, payload);
   };
 
-  const { add, remove } = useContext(UserMessagesContext);
+  useSequenceBannerTextAlert(sequenceId);
+  useSequenceEntranceExamAlert(courseId, sequenceId, intl);
+
   useEffect(() => {
-    let id = null;
-    if (sequenceStatus === 'loaded') {
-      if (sequence.bannerText) {
-        id = add({
-          code: null,
-          dismissible: false,
-          text: sequence.bannerText,
-          type: ALERT_TYPES.INFO,
-          topic: 'sequence',
-        });
+    function receiveMessage(event) {
+      const { type } = event.data;
+      if (type === 'entranceExam.passed') {
+        // I know this seems (is) intense. It is implemented this way since we need to refetch the underlying
+        // course blocks that were originally hidden because the Entrance Exam was not passed.
+        global.location.reload();
       }
     }
-    return () => {
-      if (id) {
-        remove(id);
-      }
-    };
-  }, [sequenceStatus, sequence]);
+    global.addEventListener('message', receiveMessage);
+  }, []);
 
   const [unitHasLoaded, setUnitHasLoaded] = useState(false);
   const handleUnitLoaded = () => {
@@ -130,11 +124,11 @@ function Sequence({
   const loading = sequenceStatus === 'loading' || (sequenceStatus === 'failed' && sequenceMightBeUnit);
   if (loading) {
     if (!sequenceId) {
-      return (<div> {intl.formatMessage(messages['learn.sequence.no.content'])} </div>);
+      return (<div> {intl.formatMessage(messages.noContent)} </div>);
     }
     return (
       <PageLoading
-        srMessage={intl.formatMessage(messages['learn.loading.learning.sequence'])}
+        srMessage={intl.formatMessage(messages.loadingSequence)}
       />
     );
   }
@@ -236,7 +230,7 @@ function Sequence({
   // sequence status 'failed' and any other unexpected sequence status.
   return (
     <p className="text-center py-5 mx-auto" style={{ maxWidth: '30em' }}>
-      {intl.formatMessage(messages['learn.course.load.failure'])}
+      {intl.formatMessage(messages.loadFailure)}
     </p>
   );
 }

src/courseware/course/sequence/SequenceContent.jsx

@@ -31,7 +31,7 @@ function SequenceContent({
       <Suspense
         fallback={(
           <PageLoading
-            srMessage={intl.formatMessage(messages['learn.loading.content.lock'])}
+            srMessage={intl.formatMessage(messages.loadingLockedContent)}
           />
         )}
       >
@@ -49,7 +49,7 @@ function SequenceContent({
   if (!unitId || !unit) {
     return (
       <div>
-        {intl.formatMessage(messages['learn.sequence.no.content'])}
+        {intl.formatMessage(messages.noContent)}
       </div>
     );
   }

src/courseware/course/sequence/Unit.jsx

@@ -146,7 +146,7 @@ function Unit({
   return (
     <div className="unit">
       <h1 className="mb-0 h3">{unit.title}</h1>
-      <h2 className="sr-only">{intl.formatMessage(messages['learn.header.h2.placeholder'])}</h2>
+      <h2 className="sr-only">{intl.formatMessage(messages.headerPlaceholder)}</h2>
       <BookmarkButton
         unitId={unit.id}
         isBookmarked={unit.bookmarked}
@@ -156,7 +156,7 @@ function Unit({
         <Suspense
           fallback={(
             <PageLoading
-              srMessage={intl.formatMessage(messages['learn.loading.content.lock'])}
+              srMessage={intl.formatMessage(messages.loadingLockedContent)}
             />
           )}
         >
@@ -171,7 +171,7 @@ function Unit({
         <Suspense
           fallback={(
             <PageLoading
-              srMessage={intl.formatMessage(messages['learn.loading.honor.code'])}
+              srMessage={intl.formatMessage(messages.loadingHonorCode)}
             />
           )}
         >
@@ -181,7 +181,7 @@ function Unit({
       { /** [MM-P2P] Experiment (conditional) */ }
       {!mmp2p.meta.blockContent && !shouldDisplayHonorCode && !hasLoaded && !showError && (
         <PageLoading
-          srMessage={intl.formatMessage(messages['learn.loading.learning.sequence'])}
+          srMessage={intl.formatMessage(messages.loadingSequence)}
         />
       )}
       {!mmp2p.meta.blockContent && !shouldDisplayHonorCode && !hasLoaded && showError && (

src/courseware/course/sequence/messages.js

@@ -1,37 +1,36 @@
 import { defineMessages } from '@edx/frontend-platform/i18n';
 
 const messages = defineMessages({
-  'learn.loading.content.lock': {
-    id: 'learn.loading.content.lock',
-    defaultMessage: 'Loading locked content messaging...',
-    description: 'Message shown when an interface about locked content is being loaded',
+  headerPlaceholder: {
+    id: 'learn.header.h2.placeholder',
+    defaultMessage: 'Level 2 headings may be created by course providers in the future.',
+    description: 'Message spoken by a screenreader indicating that the h2 tag is a placeholder.',
   },
-  'learn.loading.honor.code': {
-    id: 'learn.loading.honor.codk',
-    defaultMessage: 'Loading honor code messaging...',
-    description: 'Message shown when an interface about the honor code is being loaded',
-  },
-  'learn.loading.learning.sequence': {
-    id: 'learn.loading.learning.sequence',
-    defaultMessage: 'Loading learning sequence...',
-    description: 'Message when learning sequence is being loaded',
-  },
-  'learn.course.load.failure': {
+  loadFailure: {
     id: 'learn.course.load.failure',
     defaultMessage: 'There was an error loading this course.',
     description: 'Message when a course fails to load',
   },
-  'learn.sequence.no.content': {
+  loadingHonorCode: {
+    id: 'learn.loading.honor.codk',
+    defaultMessage: 'Loading honor code messaging...',
+    description: 'Message shown when an interface about the honor code is being loaded',
+  },
+  loadingLockedContent: {
+    id: 'learn.loading.content.lock',
+    defaultMessage: 'Loading locked content messaging...',
+    description: 'Message shown when an interface about locked content is being loaded',
+  },
+  loadingSequence: {
+    id: 'learn.loading.learning.sequence',
+    defaultMessage: 'Loading learning sequence...',
+    description: 'Message when learning sequence is being loaded',
+  },
+  noContent: {
     id: 'learn.sequence.no.content',
     defaultMessage: 'There is no content here.',
     description: 'Message shown when there is no content to show a user inside a learning sequence.',
   },
-  'learn.header.h2.placeholder': {
-    id: 'learn.header.h2.placeholder',
-    defaultMessage: 'Level 2 headings may be created by course providers in the future.',
-    description: 'Message spoken by a screenreader indicating that the h2 tag is a placeholder.',
-
-  },
 });
 
 export default messages;

src/courseware/data/__factories__/courseMetadata.factory.js

@@ -52,6 +52,13 @@ Factory.define('courseMetadata')
     course_exit_page_is_active: true,
     user_has_passing_grade: false,
     certificate_data: null,
+    entrance_exam_data: {
+      entrance_exam_current_score: 0.0,
+      entrance_exam_enabled: false,
+      entrance_exam_id: '',
+      entrance_exam_minimum_score_pct: 0.65,
+      entrance_exam_passed: true,
+    },
     verify_identity_url: null,
     verification_status: 'none',
     linkedin_add_to_profile_url: null,

src/courseware/data/api.js

@@ -117,6 +117,7 @@ function normalizeMetadata(metadata) {
     userHasPassingGrade: data.user_has_passing_grade,
     courseExitPageIsActive: data.course_exit_page_is_active,
     certificateData: camelCaseObject(data.certificate_data),
+    entranceExamData: camelCaseObject(data.entrance_exam_data),
     timeOffsetMillis: getTimeOffsetMillis(headers && headers.date, requestTime, responseTime),
     verifyIdentityUrl: data.verify_identity_url,
     verificationStatus: data.verification_status,