Merge branch 'improve-trends' into 'develop'

Convert trends to React Query

See merge request soapbox-pub/soapbox-fe!1722

app/soapbox/features/ui/components/__tests__/trends-panel.test.tsx

@@ -1,85 +1,74 @@
-import { List as ImmutableList, Record as ImmutableRecord } from 'immutable';
 import React from 'react';
 
-import { render, screen } from '../../../../jest/test-helpers';
-import { normalizeTag } from '../../../../normalizers';
+import { __stub } from 'soapbox/api';
+
+import { queryClient, render, screen, waitFor } from '../../../../jest/test-helpers';
 import TrendsPanel from '../trends-panel';
 
 describe('<TrendsPanel />', () => {
-  it('renders trending hashtags', () => {
-    const store = {
-      trends: ImmutableRecord({
-        items: ImmutableList([
-          normalizeTag({
-            name: 'hashtag 1',
-            history: [{
-              day: '1652745600',
-              uses: '294',
-              accounts: '180',
-            }],
-          }),
-        ]),
-        isLoading: false,
-      })(),
-    };
-
-    render(<TrendsPanel limit={1} />, undefined, store);
-    expect(screen.getByTestId('hashtag')).toHaveTextContent(/hashtag 1/i);
-    expect(screen.getByTestId('hashtag')).toHaveTextContent(/180 people talking/i);
-    expect(screen.getByTestId('sparklines')).toBeInTheDocument();
+  beforeEach(() => {
+    queryClient.clear();
   });
 
-  it('renders multiple trends', () => {
-    const store = {
-      trends: ImmutableRecord({
-        items: ImmutableList([
-          normalizeTag({
-            name: 'hashtag 1',
-            history: ImmutableList([{ accounts: [] }]),
-          }),
-          normalizeTag({
-            name: 'hashtag 2',
-            history: ImmutableList([{ accounts: [] }]),
-          }),
-        ]),
-        isLoading: false,
-      })(),
-    };
+  describe('with hashtags', () => {
+    beforeEach(() => {
+      __stub((mock) => {
+        mock.onGet('/api/v1/trends')
+          .reply(200, [
+            {
+              name: 'hashtag 1',
+              url: 'https://example.com',
+              history: [{
+                day: '1652745600',
+                uses: '294',
+                accounts: '180',
+              }],
+            },
+            { name: 'hashtag 2', url: 'https://example.com' },
+          ]);
+      });
+    });
 
-    render(<TrendsPanel limit={3} />, undefined, store);
-    expect(screen.queryAllByTestId('hashtag')).toHaveLength(2);
+    it('renders trending hashtags', async() => {
+      render(<TrendsPanel limit={1} />);
+
+      await waitFor(() => {
+        expect(screen.getByTestId('hashtag')).toHaveTextContent(/hashtag 1/i);
+        expect(screen.getByTestId('hashtag')).toHaveTextContent(/180 people talking/i);
+        expect(screen.getByTestId('sparklines')).toBeInTheDocument();
+      });
+    });
+
+    it('renders multiple trends', async() => {
+      render(<TrendsPanel limit={3} />);
+
+      await waitFor(() => {
+        expect(screen.queryAllByTestId('hashtag')).toHaveLength(2);
+      });
+    });
+
+    it('respects the limit prop', async() => {
+      render(<TrendsPanel limit={1} />);
+
+      await waitFor(() => {
+        expect(screen.queryAllByTestId('hashtag')).toHaveLength(1);
+      });
+    });
   });
 
-  it('respects the limit prop', () => {
-    const store = {
-      trends: ImmutableRecord({
-        items: ImmutableList([
-          normalizeTag({
-            name: 'hashtag 1',
-            history: [{ accounts: [] }],
-          }),
-          normalizeTag({
-            name: 'hashtag 2',
-            history: [{ accounts: [] }],
-          }),
-        ]),
-        isLoading: false,
-      })(),
-    };
+  describe('without hashtags', () => {
+    beforeEach(() => {
+      __stub((mock) => {
+        mock.onGet('/api/v1/trends').reply(200, []);
+      });
+    });
 
-    render(<TrendsPanel limit={1} />, undefined, store);
-    expect(screen.queryAllByTestId('hashtag')).toHaveLength(1);
-  });
+    it('renders empty', async() => {
+      render(<TrendsPanel limit={1} />);
 
-  it('renders empty', () => {
-    const store = {
-      trends: ImmutableRecord({
-        items: ImmutableList([]),
-        isLoading: false,
-      })(),
-    };
-
-    render(<TrendsPanel limit={1} />, undefined, store);
-    expect(screen.queryAllByTestId('hashtag')).toHaveLength(0);
+      await waitFor(() => {
+        expect(screen.queryAllByTestId('hashtag')).toHaveLength(0);
+      });
+    });
   });
 });

app/soapbox/features/ui/components/trends-panel.tsx

@@ -1,40 +1,24 @@
 import * as React from 'react';
 import { FormattedMessage } from 'react-intl';
-import { useDispatch } from 'react-redux';
 
-import { fetchTrends } from 'soapbox/actions/trends';
 import Hashtag from 'soapbox/components/hashtag';
 import { Widget } from 'soapbox/components/ui';
-import { useAppSelector } from 'soapbox/hooks';
+import useTrends from 'soapbox/queries/trends';
 
 interface ITrendsPanel {
   limit: number
 }
 
 const TrendsPanel = ({ limit }: ITrendsPanel) => {
-  const dispatch = useDispatch();
+  const { data: trends, isFetching } = useTrends();
 
-  const trends = useAppSelector((state) => state.trends.items);
-
-  const sortedTrends = React.useMemo(() => {
-    return trends.sort((a, b) => {
-      const num_a = Number(a.getIn(['history', 0, 'accounts']));
-      const num_b = Number(b.getIn(['history', 0, 'accounts']));
-      return num_b - num_a;
-    }).slice(0, limit);
-  }, [trends, limit]);
-
-  React.useEffect(() => {
-    dispatch(fetchTrends());
-  }, []);
-
-  if (sortedTrends.isEmpty()) {
+  if (trends?.length === 0 || isFetching) {
     return null;
   }
 
   return (
     <Widget title={<FormattedMessage id='trends.title' defaultMessage='Trends' />}>
-      {sortedTrends.map((hashtag) => (
+      {trends?.slice(0, limit).map((hashtag) => (
         <Hashtag key={hashtag.name} hashtag={hashtag} />
       ))}
     </Widget>

app/soapbox/jest/test-helpers.tsx

@@ -37,6 +37,8 @@ const queryClient = new QueryClient({
   },
   defaultOptions: {
     queries: {
+      staleTime: 0,
+      cacheTime: Infinity,
       retry: false,
     },
   },
@@ -123,4 +125,5 @@ export {
   rootReducer,
   mockWindowProperty,
   createTestStore,
+  queryClient,
 };

app/soapbox/queries/__tests__/suggestions.test.ts

@@ -4,7 +4,7 @@ import { renderHook, waitFor } from 'soapbox/jest/test-helpers';
 import useOnboardingSuggestions from '../suggestions';
 
 describe('useCarouselAvatars', () => {
-  describe('with a successul query', () => {
+  describe('with a successful query', () => {
     beforeEach(() => {
       __stub((mock) => {
         mock.onGet('/api/v2/suggestions')
@@ -26,7 +26,7 @@ describe('useCarouselAvatars', () => {
     });
   });
 
-  describe('with an unsuccessul query', () => {
+  describe('with an unsuccessful query', () => {
     beforeEach(() => {
       __stub((mock) => {
         mock.onGet('/api/v2/suggestions').networkError();

app/soapbox/queries/__tests__/trends.test.ts

@@ -0,0 +1,46 @@
+import { __stub } from 'soapbox/api';
+import { queryClient, renderHook, waitFor } from 'soapbox/jest/test-helpers';
+
+import useTrends from '../trends';
+
+describe('useTrends', () => {
+  beforeEach(() => {
+    queryClient.clear();
+  });
+
+  describe('with a successful query', () => {
+    beforeEach(() => {
+      __stub((mock) => {
+        mock.onGet('/api/v1/trends')
+          .reply(200, [
+            { name: '#golf', url: 'https://example.com' },
+            { name: '#tennis', url: 'https://example.com' },
+          ]);
+      });
+    });
+
+    it('is successful', async() => {
+      const { result } = renderHook(() => useTrends());
+
+      await waitFor(() => expect(result.current.isFetching).toBe(false));
+
+      expect(result.current.data?.length).toBe(2);
+    });
+  });
+
+  describe('with an unsuccessful query', () => {
+    beforeEach(() => {
+      __stub((mock) => {
+        mock.onGet('/api/v1/trends').networkError();
+      });
+    });
+
+    it('is successful', async() => {
+      const { result } = renderHook(() => useTrends());
+
+      await waitFor(() => expect(result.current.isFetching).toBe(false));
+
+      expect(result.current.error).toBeDefined();
+    });
+  });
+});

app/soapbox/queries/trends.ts

@@ -0,0 +1,28 @@
+import { useQuery } from '@tanstack/react-query';
+
+import { fetchTrendsSuccess } from 'soapbox/actions/trends';
+import { useApi, useAppDispatch } from 'soapbox/hooks';
+import { normalizeTag } from 'soapbox/normalizers';
+
+import type { Tag } from 'soapbox/types/entities';
+
+export default function useTrends() {
+  const api = useApi();
+  const dispatch = useAppDispatch();
+
+  const getTrends = async() => {
+    const { data } = await api.get<any[]>('/api/v1/trends');
+
+    dispatch(fetchTrendsSuccess(data));
+
+    const normalizedData = data.map((tag) => normalizeTag(tag));
+    return normalizedData;
+  };
+
+  const result = useQuery<ReadonlyArray<Tag>>(['trends'], getTrends, {
+    placeholderData: [],
+    staleTime: 600000, // 10 minutes
+  });
+
+  return result;
+}