feat: collections tab [FC-0062] (#1257)

* feat: add collections query to search results

* feat: collections tab with basic cards

* feat: add collection card also fix inifinite scroll for collections

* feat: collection empty states

* test: add test for collections card

src/generic/block-type-utils/constants.ts

@@ -51,6 +51,7 @@ export const STRUCTURAL_TYPE_ICONS: Record<string, React.ComponentType> = {
   vertical: UNIT_TYPE_ICONS_MAP.vertical,
   sequential: Folder,
   chapter: Folder,
+  collection: Folder,
 };
 
 export const COMPONENT_TYPE_STYLE_COLOR_MAP = {

src/hooks.ts

@@ -0,0 +1,68 @@
+import { useEffect, useState } from 'react';
+import { history } from '@edx/frontend-platform';
+
+export const useScrollToHashElement = ({ isLoading }: { isLoading: boolean }) => {
+  const [elementWithHash, setElementWithHash] = useState<string | null>(null);
+
+  useEffect(() => {
+    const currentHash = window.location.hash.substring(1);
+
+    if (currentHash) {
+      const element = document.getElementById(currentHash);
+      if (element) {
+        element.scrollIntoView();
+        history.replace({ hash: '' });
+      }
+      setElementWithHash(currentHash);
+    }
+  }, [isLoading]);
+
+  return { elementWithHash };
+};
+
+export const useEscapeClick = ({ onEscape, dependency }: { onEscape: () => void, dependency: any }) => {
+  useEffect(() => {
+    const handleEscapeClick = (event: KeyboardEvent) => {
+      if (event.key === 'Escape') {
+        onEscape();
+      }
+    };
+
+    window.addEventListener('keydown', handleEscapeClick);
+
+    return () => {
+      window.removeEventListener('keydown', handleEscapeClick);
+    };
+  }, [dependency]);
+};
+
+/**
+ * Hook which loads next page of items on scroll
+ */
+export const useLoadOnScroll = (
+  hasNextPage: boolean | undefined,
+  isFetchingNextPage: boolean,
+  fetchNextPage: () => void,
+  enabled: boolean,
+) => {
+  useEffect(() => {
+    if (enabled) {
+      const onscroll = () => {
+        // Verify the position of the scroll to implement an infinite scroll.
+        // Used `loadLimit` to fetch next page before reach the end of the screen.
+        const loadLimit = 300;
+        const scrolledTo = window.scrollY + window.innerHeight;
+        const scrollDiff = document.body.scrollHeight - scrolledTo;
+        const isNearToBottom = scrollDiff <= loadLimit;
+        if (isNearToBottom && hasNextPage && !isFetchingNextPage) {
+          fetchNextPage();
+        }
+      };
+      window.addEventListener('scroll', onscroll);
+      return () => {
+        window.removeEventListener('scroll', onscroll);
+      };
+    }
+    return () => { };
+  }, [hasNextPage, isFetchingNextPage, fetchNextPage]);
+};

src/library-authoring/EmptyStates.tsx

@@ -10,27 +10,37 @@ import messages from './messages';
 import { LibraryContext } from './common/context';
 import { useContentLibrary } from './data/apiHooks';
 
-export const NoComponents = () => {
+type NoSearchResultsProps = {
+  searchType?: 'collection' | 'component',
+};
+
+export const NoComponents = ({ searchType = 'component' }: NoSearchResultsProps) => {
   const { openAddContentSidebar } = useContext(LibraryContext);
   const { libraryId } = useParams();
   const { data: libraryData } = useContentLibrary(libraryId);
   const canEditLibrary = libraryData?.canEditLibrary ?? false;
 
   return (
     <Stack direction="horizontal" gap={3} className="mt-6 justify-content-center">
-      <FormattedMessage {...messages.noComponents} />
+      {searchType === 'collection'
+        ? <FormattedMessage {...messages.noCollections} />
+        : <FormattedMessage {...messages.noComponents} />}
       {canEditLibrary && (
         <Button iconBefore={Add} onClick={() => openAddContentSidebar()}>
-          <FormattedMessage {...messages.addComponent} />
+          {searchType === 'collection'
+            ? <FormattedMessage {...messages.addCollection} />
+            : <FormattedMessage {...messages.addComponent} />}
         </Button>
       )}
     </Stack>
   );
 };
 
-export const NoSearchResults = () => (
-  <Stack direction="horizontal" gap={3} className="mt-6 justify-content-center">
-    <FormattedMessage {...messages.noSearchResults} />
+export const NoSearchResults = ({ searchType = 'component' }: NoSearchResultsProps) => (
+  <Stack direction="horizontal" gap={3} className="my-6 justify-content-center">
+    {searchType === 'collection'
+      ? <FormattedMessage {...messages.noSearchResultsCollections} />
+      : <FormattedMessage {...messages.noSearchResults} />}
     <ClearFiltersButton variant="primary" size="md" />
   </Stack>
 );

src/library-authoring/LibraryAuthoringPage.test.tsx

@@ -28,9 +28,12 @@ const returnEmptyResult = (_url, req) => {
   // We have to replace the query (search keywords) in the mock results with the actual query,
   // because otherwise we may have an inconsistent state that causes more queries and unexpected results.
   mockEmptyResult.results[0].query = query;
+  mockEmptyResult.results[2].query = query;
   // And fake the required '_formatted' fields; it contains the highlighting <mark>...</mark> around matched words
   // eslint-disable-next-line no-underscore-dangle, no-param-reassign
   mockEmptyResult.results[0]?.hits.forEach((hit) => { hit._formatted = { ...hit }; });
+  // eslint-disable-next-line no-underscore-dangle, no-param-reassign
+  mockEmptyResult.results[2]?.hits.forEach((hit) => { hit._formatted = { ...hit }; });
   return mockEmptyResult;
 };
 
@@ -48,10 +51,14 @@ const returnLowNumberResults = (_url, req) => {
   newMockResult.results[0].query = query;
   // Limit number of results to just 2
   newMockResult.results[0].hits = mockResult.results[0]?.hits.slice(0, 2);
+  newMockResult.results[2].hits = mockResult.results[2]?.hits.slice(0, 2);
   newMockResult.results[0].estimatedTotalHits = 2;
+  newMockResult.results[2].estimatedTotalHits = 2;
   // And fake the required '_formatted' fields; it contains the highlighting <mark>...</mark> around matched words
   // eslint-disable-next-line no-underscore-dangle, no-param-reassign
   newMockResult.results[0]?.hits.forEach((hit) => { hit._formatted = { ...hit }; });
+  // eslint-disable-next-line no-underscore-dangle, no-param-reassign
+  newMockResult.results[2]?.hits.forEach((hit) => { hit._formatted = { ...hit }; });
   return newMockResult;
 };
 
@@ -129,42 +136,46 @@ describe('<LibraryAuthoringPage />', () => {
 
     // "Recently Modified" header + sort shown
     expect(screen.getAllByText('Recently Modified').length).toEqual(2);
-    expect(screen.getByText('Collections (0)')).toBeInTheDocument();
+    expect(screen.getByText('Collections (6)')).toBeInTheDocument();
     expect(screen.getByText('Components (10)')).toBeInTheDocument();
     expect((await screen.findAllByText('Introduction to Testing'))[0]).toBeInTheDocument();
 
     // Navigate to the components tab
     fireEvent.click(screen.getByRole('tab', { name: 'Components' }));
     // "Recently Modified" default sort shown
     expect(screen.getAllByText('Recently Modified').length).toEqual(1);
-    expect(screen.queryByText('Collections (0)')).not.toBeInTheDocument();
+    expect(screen.queryByText('Collections (6)')).not.toBeInTheDocument();
     expect(screen.queryByText('Components (10)')).not.toBeInTheDocument();
 
     // Navigate to the collections tab
     fireEvent.click(screen.getByRole('tab', { name: 'Collections' }));
     // "Recently Modified" default sort shown
     expect(screen.getAllByText('Recently Modified').length).toEqual(1);
-    expect(screen.queryByText('Collections (0)')).not.toBeInTheDocument();
+    expect(screen.queryByText('Collections (6)')).not.toBeInTheDocument();
     expect(screen.queryByText('Components (10)')).not.toBeInTheDocument();
     expect(screen.queryByText('There are 10 components in this library')).not.toBeInTheDocument();
-    expect(screen.getByText('Coming soon!')).toBeInTheDocument();
+    expect((await screen.findAllByText('Collection 1'))[0]).toBeInTheDocument();
 
     // Go back to Home tab
     // This step is necessary to avoid the url change leak to other tests
     fireEvent.click(screen.getByRole('tab', { name: 'Home' }));
     // "Recently Modified" header + sort shown
     expect(screen.getAllByText('Recently Modified').length).toEqual(2);
-    expect(screen.getByText('Collections (0)')).toBeInTheDocument();
+    expect(screen.getByText('Collections (6)')).toBeInTheDocument();
     expect(screen.getByText('Components (10)')).toBeInTheDocument();
   });
 
-  it('shows a library without components', async () => {
+  it('shows a library without components and collections', async () => {
     fetchMock.post(searchEndpoint, returnEmptyResult, { overwriteRoutes: true });
     await renderLibraryPage();
 
     expect(await screen.findByText('Content library')).toBeInTheDocument();
     expect((await screen.findAllByText(libraryTitle))[0]).toBeInTheDocument();
 
+    fireEvent.click(screen.getByRole('tab', { name: 'Collections' }));
+    expect(screen.getByText('You have not added any collection to this library yet.')).toBeInTheDocument();
+
+    fireEvent.click(screen.getByRole('tab', { name: 'Home' }));
     expect(screen.getByText('You have not added any content to this library yet.')).toBeInTheDocument();
   });
 
@@ -211,6 +222,14 @@ describe('<LibraryAuthoringPage />', () => {
     // Navigate to the components tab
     fireEvent.click(screen.getByRole('tab', { name: 'Components' }));
     expect(screen.getByText('No matching components found in this library.')).toBeInTheDocument();
+
+    // Navigate to the collections tab
+    fireEvent.click(screen.getByRole('tab', { name: 'Collections' }));
+    expect(screen.getByText('No matching collections found in this library.')).toBeInTheDocument();
+
+    // Go back to Home tab
+    // This step is necessary to avoid the url change leak to other tests
+    fireEvent.click(screen.getByRole('tab', { name: 'Home' }));
   });
 
   it('should open and close new content sidebar', async () => {
@@ -282,20 +301,29 @@ describe('<LibraryAuthoringPage />', () => {
 
     // "Recently Modified" header + sort shown
     await waitFor(() => { expect(screen.getAllByText('Recently Modified').length).toEqual(2); });
-    expect(screen.getByText('Collections (0)')).toBeInTheDocument();
+    expect(screen.getByText('Collections (6)')).toBeInTheDocument();
     expect(screen.getByText('Components (10)')).toBeInTheDocument();
     expect(screen.getAllByText('Introduction to Testing')[0]).toBeInTheDocument();
     expect(screen.queryByText('You have not added any content to this library yet.')).not.toBeInTheDocument();
 
-    // There should only be one "View All" button, since the Components count
+    // There should be two "View All" button, since the Components and Collections count
     // are above the preview limit (4)
-    expect(screen.getByText('View All')).toBeInTheDocument();
+    expect(screen.getAllByText('View All').length).toEqual(2);
 
-    // Clicking on "View All" button should navigate to the Components tab
-    fireEvent.click(screen.getByText('View All'));
+    // Clicking on first "View All" button should navigate to the Collections tab
+    fireEvent.click(screen.getAllByText('View All')[0]);
     // "Recently Modified" default sort shown
     expect(screen.getAllByText('Recently Modified').length).toEqual(1);
-    expect(screen.queryByText('Collections (0)')).not.toBeInTheDocument();
+    expect(screen.queryByText('Collections (6)')).not.toBeInTheDocument();
+    expect(screen.queryByText('Components (10)')).not.toBeInTheDocument();
+    expect(screen.getByText('Collection 1')).toBeInTheDocument();
+
+    fireEvent.click(screen.getByRole('tab', { name: 'Home' }));
+    // Clicking on second "View All" button should navigate to the Components tab
+    fireEvent.click(screen.getAllByText('View All')[1]);
+    // "Recently Modified" default sort shown
+    expect(screen.getAllByText('Recently Modified').length).toEqual(1);
+    expect(screen.queryByText('Collections (6)')).not.toBeInTheDocument();
     expect(screen.queryByText('Components (10)')).not.toBeInTheDocument();
     expect(screen.getAllByText('Introduction to Testing')[0]).toBeInTheDocument();
 
@@ -304,7 +332,7 @@ describe('<LibraryAuthoringPage />', () => {
     fireEvent.click(screen.getByRole('tab', { name: 'Home' }));
     // "Recently Modified" header + sort shown
     expect(screen.getAllByText('Recently Modified').length).toEqual(2);
-    expect(screen.getByText('Collections (0)')).toBeInTheDocument();
+    expect(screen.getByText('Collections (6)')).toBeInTheDocument();
     expect(screen.getByText('Components (10)')).toBeInTheDocument();
   });
 
@@ -317,7 +345,7 @@ describe('<LibraryAuthoringPage />', () => {
 
     // "Recently Modified" header + sort shown
     await waitFor(() => { expect(screen.getAllByText('Recently Modified').length).toEqual(2); });
-    expect(screen.getByText('Collections (0)')).toBeInTheDocument();
+    expect(screen.getByText('Collections (2)')).toBeInTheDocument();
     expect(screen.getByText('Components (2)')).toBeInTheDocument();
     expect(screen.getAllByText('Introduction to Testing')[0]).toBeInTheDocument();
     expect(screen.queryByText('You have not added any content to this library yet.')).not.toBeInTheDocument();
@@ -405,8 +433,8 @@ describe('<LibraryAuthoringPage />', () => {
     await renderLibraryPage();
 
     // Click on the first component
-    waitFor(() => expect(screen.queryByText(displayName)).toBeInTheDocument());
-    fireEvent.click(screen.getAllByText(displayName)[0]);
+    expect((await screen.findAllByText(displayName))[0]).toBeInTheDocument();
+    fireEvent.click((await screen.findAllByText(displayName))[0]);
 
     const sidebar = screen.getByTestId('library-sidebar');
 
@@ -518,4 +546,20 @@ describe('<LibraryAuthoringPage />', () => {
 
     expect(screen.getByText(/no matching components/i)).toBeInTheDocument();
   });
+
+  it('shows both components and collections in recently modified section', async () => {
+    await renderLibraryPage();
+
+    expect(await screen.findByText('Content library')).toBeInTheDocument();
+    expect((await screen.findAllByText(libraryTitle))[0]).toBeInTheDocument();
+
+    // "Recently Modified" header + sort shown
+    expect(screen.getAllByText('Recently Modified').length).toEqual(2);
+    const recentModifiedContainer = (await screen.findAllByText('Recently Modified'))[1].parentElement?.parentElement?.parentElement;
+    expect(recentModifiedContainer).toBeTruthy();
+
+    const container = within(recentModifiedContainer!);
+    expect(container.queryAllByText('Text').length).toBeGreaterThan(0);
+    expect(container.queryAllByText('Collection').length).toBeGreaterThan(0);
+  });
 });

src/library-authoring/LibraryAuthoringPage.tsx

@@ -206,7 +206,7 @@ const LibraryAuthoringPage = () => {
               />
               <Route
                 path={TabList.collections}
-                element={<LibraryCollections />}
+                element={<LibraryCollections variant="full" />}
               />
               <Route
                 path="*"