CORE-1304: add new titles for REX modals

src/app/content/hooks/receiveContent.ts

@@ -1,9 +1,10 @@
+import queryString from 'query-string';
 import { setHead } from '../../head/actions';
 import { initialState as headInitialState } from '../../head/reducer';
 import { Link } from '../../head/types';
 import createIntl from '../../messages/createIntl';
 import { locationChange } from '../../navigation/actions';
-import { pathname } from '../../navigation/selectors';
+import { pathname, query } from '../../navigation/selectors';
 import theme from '../../theme';
 import { ActionHookBody } from '../../types';
 import { receivePage } from '../actions';
@@ -41,6 +42,8 @@ const hookBody: ActionHookBody<typeof receivePage | typeof locationChange> = (se
   const loadingBook = select.loadingBook(state);
   const loadingPage = select.loadingPage(state);
   const currentPath = pathname(state);
+  const queryParams = queryString.stringify(query(state));
+  const queryParamsWithPrefix = queryParams ? `?${queryParams}` : '';
 
   if (!page || !book) {
     dispatch(
@@ -57,7 +60,7 @@ const hookBody: ActionHookBody<typeof receivePage | typeof locationChange> = (se
 
   const locale = book.language;
   const intl = await createIntl(locale);
-  const title = createTitle(page, book, intl);
+  const title = createTitle(page, book, intl, queryParamsWithPrefix);
   const description = getPageDescription(services, intl, book, page);
   const canonical = await getCanonicalUrlParams(archiveLoader, osWebLoader, book, page.id);
   const canonicalUrl = canonical && contentRoute.getUrl(canonical);

src/app/content/utils/seoUtils.spec.ts

@@ -144,3 +144,87 @@ describe('createTitle', () => {
     expect(title).toEqual('3 page1 - book | OpenStax');
   });
 });
+describe('createTitle (modal param)', () => {
+  const intl = createIntl();
+
+  it('returns modal title for MH modal param', () => {
+    const page = makeArchiveSection('page1');
+    const book = {
+      title: 'book',
+      tree: makeArchiveTree('book', [page]),
+    };
+    // params string with modal=MH
+    const params = 'modal=MH';
+    const title = createTitle(page as any as Page, book as any as Book, intl, params);
+    expect(title).toEqual('My Highlights and Notes | OpenStax');
+  });
+
+  it('returns modal title for KS modal param', () => {
+    const page = makeArchiveSection('page1');
+    const book = {
+      title: 'book',
+      tree: makeArchiveTree('book', [page]),
+    };
+    // params string with modal=KS
+    const params = 'modal=KS';
+    const title = createTitle(page as any as Page, book as any as Book, intl, params);
+    expect(title).toEqual('REX Keyboard Shortcuts | OpenStax');
+  });
+
+  it('returns modal title for PQ modal param', () => {
+    const page = makeArchiveSection('page1');
+    const book = {
+      title: 'book',
+      tree: makeArchiveTree('book', [page]),
+    };
+    // params string with modal=PQ
+    const params = 'modal=PQ';
+    const title = createTitle(page as any as Page, book as any as Book, intl, params);
+    expect(title).toEqual('REX Practice Questions | OpenStax');
+  });
+
+  it('returns modal title for SG modal param', () => {
+    const page = makeArchiveSection('page1');
+    const book = {
+      title: 'book',
+      tree: makeArchiveTree('book', [page]),
+    };
+    // params string with modal=SG
+    const params = 'modal=SG';
+    const title = createTitle(page as any as Page, book as any as Book, intl, params);
+    expect(title).toEqual('REX Study Guides | OpenStax');
+  });
+
+  it('returns normal title if modal param is not present', () => {
+    const page = makeArchiveSection('page1');
+    const book = {
+      title: 'book',
+      tree: makeArchiveTree('book', [page]),
+    };
+    const params = '';
+    const title = createTitle(page as any as Page, book as any as Book, intl, params);
+    expect(title).toEqual('page1 - book | OpenStax');
+  });
+
+  it('returns normal title if modal param is unknown', () => {
+    const page = makeArchiveSection('page1');
+    const book = {
+      title: 'book',
+      tree: makeArchiveTree('book', [page]),
+    };
+    const params = 'modal=UNKNOWN';
+    const title = createTitle(page as any as Page, book as any as Book, intl, params);
+    expect(title).toEqual('page1 - book | OpenStax');
+  });
+
+  it('returns modal title if modal param is present among other params', () => {
+    const page = makeArchiveSection('page1');
+    const book = {
+      title: 'book',
+      tree: makeArchiveTree('book', [page]),
+    };
+    const params = 'foo=bar&modal=MH&baz=qux';
+    const title = createTitle(page as any as Page, book as any as Book, intl, params);
+    expect(title).toEqual('My Highlights and Notes | OpenStax');
+  });
+});

src/app/content/utils/seoUtils.ts

@@ -111,14 +111,28 @@ export const getPageDescription = (services: Pick<AppServices, 'archiveLoader'>,
   return pageDescription || intl.formatMessage({id: 'i18n:metadata:description'});
 };
 
-export const createTitle = (page: Page, book: Book, intl: IntlShape): string => {
+const modalTitles = {
+  'MH': 'My Highlights and Notes',
+  'KS': 'REX Keyboard Shortcuts',
+  'PQ': 'REX Practice Questions',
+  'SG': 'REX Study Guides',
+};
+
+export const createTitle = (page: Page, book: Book, intl: IntlShape, params?: string): string => {
   const node = assertDefined(
     findArchiveTreeNodeById(book.tree, page.id),
     `couldn't find node for a page id: ${page.id}`
   );
   const [nodeNumber, nodeTitle] = splitTitleParts(node.title);
   const title = `${nodeTitle} - ${book.title} | OpenStax`;
-
+  const searchParams = params ? new URLSearchParams(params) : undefined;
+  const modalParam = searchParams?.get('modal');
+  const modalTitle = modalParam && modalParam in modalTitles
+    ? modalTitles[modalParam as keyof typeof modalTitles]
+    : null;
+  if (modalTitle) {
+    return `${modalTitle} | OpenStax`;
+  }
   if (nodeNumber) {
     return `${nodeNumber} ${title}`;
   }