Add support for pagination in Chat Search

app/soapbox/features/chats/components/chat-page/components/chat-page-new.tsx

@@ -1,11 +1,9 @@
 import React from 'react';
-import { FormattedMessage } from 'react-intl';
 import { useHistory } from 'react-router-dom';
 
-import AccountSearch from 'soapbox/components/account-search';
-import { CardTitle, HStack, IconButton, Stack, Text } from 'soapbox/components/ui';
-import { ChatKeys, useChats } from 'soapbox/queries/chats';
-import { queryClient } from 'soapbox/queries/client';
+import { CardTitle, HStack, IconButton, Stack } from 'soapbox/components/ui';
+
+import ChatSearch from '../../chat-search/chat-search';
 
 interface IChatPageNew {
 }
@@ -13,17 +11,10 @@ interface IChatPageNew {
 /** New message form to create a chat. */
 const ChatPageNew: React.FC<IChatPageNew> = () => {
   const history = useHistory();
-  const { getOrCreateChatByAccountId } = useChats();
-
-  const handleAccountSelected = async (accountId: string) => {
-    const { data } = await getOrCreateChatByAccountId(accountId);
-    history.push(`/chats/${data.id}`);
-    queryClient.invalidateQueries(ChatKeys.chatSearch());
-  };
 
   return (
-    <Stack className='h-full'>
-      <Stack className='flex-grow py-6 px-4 sm:p-6 space-y-4'>
+    <Stack className='h-full space-y-4'>
+      <Stack className='flex-grow pt-6 px-4 sm:px-6'>
         <HStack alignItems='center'>
           <IconButton
             src={require('@tabler/icons/arrow-left.svg')}
@@ -33,26 +24,9 @@ const ChatPageNew: React.FC<IChatPageNew> = () => {
 
           <CardTitle title='New Message' />
         </HStack>
-
-        <HStack space={2} alignItems='center'>
-          <Text>
-            <FormattedMessage
-              id='chats.new.to'
-              defaultMessage='To:'
-            />
-          </Text>
-
-          <AccountSearch
-            onSelected={handleAccountSelected}
-            placeholder='Type a name'
-            theme='search'
-            showButtons={false}
-            autoFocus
-            className='mb-0.5'
-            followers
-          />
-        </HStack>
       </Stack>
+
+      <ChatSearch isMainPage />
     </Stack>
   );
 };

app/soapbox/features/chats/components/chat-pane/chat-pane.tsx

@@ -13,6 +13,7 @@ import ChatSearch from '../chat-search/chat-search';
 import EmptyResultsBlankslate from '../chat-search/empty-results-blankslate';
 import ChatPaneHeader from '../chat-widget/chat-pane-header';
 import ChatWindow from '../chat-widget/chat-window';
+import ChatSearchHeader from '../chat-widget/headers/chat-search-header';
 import { Pane } from '../ui';
 
 import Blankslate from './blankslate';
@@ -86,7 +87,13 @@ const ChatPane = () => {
   }
 
   if (screen === ChatWidgetScreens.SEARCH) {
-    return <ChatSearch />;
+    return (
+      <Pane isOpen={isOpen} index={0} main>
+        <ChatSearchHeader />
+
+        {isOpen ? <ChatSearch /> : null}
+      </Pane>
+    );
   }
 
   return (

app/soapbox/features/chats/components/chat-search-input.tsx

@@ -29,6 +29,7 @@ const ChatSearchInput: React.FC<IChatSearchInput> = ({ value, onChange, onClear
       className='rounded-full'
       value={value}
       onChange={onChange}
+      outerClassName='mt-0'
       theme='search'
       append={
         <button onClick={onClear}>

app/soapbox/features/chats/components/chat-search/chat-search.tsx

@@ -1,10 +1,10 @@
 import { useMutation } from '@tanstack/react-query';
 import { AxiosError } from 'axios';
 import React, { useState } from 'react';
-import { defineMessages, useIntl } from 'react-intl';
+import { useHistory } from 'react-router-dom';
 
 import snackbar from 'soapbox/actions/snackbar';
-import { HStack, Icon, Input, Stack, Text } from 'soapbox/components/ui';
+import { Icon, Input, Stack } from 'soapbox/components/ui';
 import { ChatWidgetScreens, useChatContext } from 'soapbox/contexts/chat-context';
 import { useAppDispatch, useDebounce } from 'soapbox/hooks';
 import { useChats } from 'soapbox/queries/chats';
@@ -12,29 +12,30 @@ import { queryClient } from 'soapbox/queries/client';
 import useAccountSearch from 'soapbox/queries/search';
 
 import { ChatKeys } from '../../../../queries/chats';
-import ChatPaneHeader from '../chat-widget/chat-pane-header';
-import { Pane } from '../ui';
 
 import Blankslate from './blankslate';
 import EmptyResultsBlankslate from './empty-results-blankslate';
 import Results from './results';
 
-const messages = defineMessages({
-  title: { id: 'chat_search.title', defaultMessage: 'Messages' },
-});
+interface IChatSearch {
+  isMainPage?: boolean
+}
+
+const ChatSearch = (props: IChatSearch) => {
+  const { isMainPage = false } = props;
 
-const ChatSearch = () => {
   const debounce = useDebounce;
   const dispatch = useAppDispatch();
-  const intl = useIntl();
+  const history = useHistory();
 
-  const { isOpen, changeScreen, toggleChatPane } = useChatContext();
+  const { changeScreen } = useChatContext();
   const { getOrCreateChatByAccountId } = useChats();
 
   const [value, setValue] = useState<string>('');
   const debouncedValue = debounce(value as string, 300);
 
-  const { data: accounts, isFetching } = useAccountSearch(debouncedValue);
+  const accountSearchResult = useAccountSearch(debouncedValue);
+  const { data: accounts, isFetching } = accountSearchResult;
 
   const hasSearchValue = debouncedValue && debouncedValue.length > 0;
   const hasSearchResults = (accounts || []).length > 0;
@@ -47,7 +48,12 @@ const ChatSearch = () => {
       dispatch(snackbar.error(data?.error));
     },
     onSuccess: (response) => {
+      if (isMainPage) {
+        history.push(`/chats/${response.data.id}`);
+      } else {
         changeScreen(ChatWidgetScreens.CHAT, response.data.id);
+      }
+
       queryClient.invalidateQueries(ChatKeys.chatSearch());
     },
   });
@@ -56,7 +62,7 @@ const ChatSearch = () => {
     if (hasSearchResults) {
       return (
         <Results
-          accounts={accounts}
+          accountSearchResult={accountSearchResult}
           onSelect={(id) => {
             handleClickOnSearchResult.mutate(id);
             clearValue();
@@ -77,33 +83,6 @@ const ChatSearch = () => {
   };
 
   return (
-    <Pane isOpen={isOpen} index={0} main>
-      <ChatPaneHeader
-        data-testid='pane-header'
-        title={
-          <HStack alignItems='center' space={2}>
-            <button
-              onClick={() => {
-                changeScreen(ChatWidgetScreens.INBOX);
-              }}
-            >
-              <Icon
-                src={require('@tabler/icons/arrow-left.svg')}
-                className='h-6 w-6 text-gray-600 dark:text-gray-400'
-              />
-            </button>
-
-            <Text size='sm' weight='bold' truncate>
-              {intl.formatMessage(messages.title)}
-            </Text>
-          </HStack>
-        }
-        isOpen={isOpen}
-        isToggleable={false}
-        onToggle={toggleChatPane}
-      />
-
-      {isOpen ? (
     <Stack space={4} className='flex-grow h-full'>
       <div className='px-4'>
         <Input
@@ -111,9 +90,9 @@ const ChatSearch = () => {
           type='text'
           autoFocus
           placeholder='Type a name'
-              className='rounded-full'
           value={value || ''}
           onChange={(event) => setValue(event.target.value)}
+          outerClassName='mt-0'
           theme='search'
           append={
             <button onClick={clearValue}>
@@ -127,12 +106,10 @@ const ChatSearch = () => {
         />
       </div>
 
-          <Stack className='overflow-y-scroll flex-grow h-full' space={2}>
+      <Stack className='flex-grow'>
         {renderBody()}
       </Stack>
     </Stack>
-      ) : null}
-    </Pane>
   );
 };
 

app/soapbox/features/chats/components/chat-search/results.tsx

@@ -1,26 +1,33 @@
-import React from 'react';
+import classNames from 'clsx';
+import React, { useCallback, useState } from 'react';
+import { Virtuoso } from 'react-virtuoso';
 
 import { Avatar, HStack, Stack, Text } from 'soapbox/components/ui';
 import VerificationBadge from 'soapbox/components/verification-badge';
+import useAccountSearch from 'soapbox/queries/search';
 
 interface IResults {
-  accounts: {
-    display_name: string
-    acct: string
-    id: string
-    avatar: string
-    verified: boolean
-  }[]
+  accountSearchResult: ReturnType<typeof useAccountSearch>
   onSelect(id: string): void
 }
 
-const Results = ({ accounts, onSelect }: IResults) => (
-  <>
-    {(accounts || []).map((account: any) => (
+const Results = ({ accountSearchResult, onSelect }: IResults) => {
+  const { data: accounts, isFetching, hasNextPage, fetchNextPage } = accountSearchResult;
+
+  const [isNearBottom, setNearBottom] = useState<boolean>(false);
+  const [isNearTop, setNearTop] = useState<boolean>(true);
+
+  const handleLoadMore = () => {
+    if (hasNextPage && !isFetching) {
+      fetchNextPage();
+    }
+  };
+
+  const renderAccount = useCallback((_index, account) => (
     <button
       key={account.id}
       type='button'
-        className='px-4 py-2 w-full flex flex-col hover:bg-gray-100 dark:hover:bg-gray-800'
+      className='px-2 py-3 w-full rounded-lg flex flex-col hover:bg-gray-100 dark:hover:bg-gray-800'
       onClick={() => onSelect(account.id)}
       data-testid='account'
     >
@@ -36,8 +43,38 @@ const Results = ({ accounts, onSelect }: IResults) => (
         </Stack>
       </HStack>
     </button>
-    ))}
+  ), []);
+
+  return (
+    <div className='relative flex-grow'>
+      <Virtuoso
+        data={accounts}
+        itemContent={(index, chat) => (
+          <div className='px-2'>
+            {renderAccount(index, chat)}
+          </div>
+        )}
+        endReached={handleLoadMore}
+        atTopStateChange={(atTop) => setNearTop(atTop)}
+        atBottomStateChange={(atBottom) => setNearBottom(atBottom)}
+      />
+
+      <>
+        <div
+          className={classNames('inset-x-0 top-0 flex rounded-t-lg justify-center bg-gradient-to-b from-white to-transparent pb-12 pt-8 pointer-events-none dark:from-gray-900 absolute transition-opacity duration-500', {
+            'opacity-0': isNearTop,
+            'opacity-100': !isNearTop,
+          })}
+        />
+        <div
+          className={classNames('inset-x-0 bottom-0 flex rounded-b-lg justify-center bg-gradient-to-t from-white to-transparent pt-12 pb-8 pointer-events-none dark:from-gray-900 absolute transition-opacity duration-500', {
+            'opacity-0': isNearBottom,
+            'opacity-100': !isNearBottom,
+          })}
+        />
       </>
+    </div>
   );
+};
 
 export default Results;

app/soapbox/features/chats/components/chat-widget/headers/chat-search-header.tsx

@@ -0,0 +1,46 @@
+import React from 'react';
+import { defineMessages, useIntl } from 'react-intl';
+
+import { HStack, Icon, Text } from 'soapbox/components/ui';
+import { ChatWidgetScreens, useChatContext } from 'soapbox/contexts/chat-context';
+
+import ChatPaneHeader from '../chat-pane-header';
+
+const messages = defineMessages({
+  title: { id: 'chat_search.title', defaultMessage: 'Messages' },
+});
+
+const ChatSearchHeader = () => {
+  const intl = useIntl();
+
+  const { changeScreen, isOpen, toggleChatPane } = useChatContext();
+
+  return (
+    <ChatPaneHeader
+      data-testid='pane-header'
+      title={
+        <HStack alignItems='center' space={2}>
+          <button
+            onClick={() => {
+              changeScreen(ChatWidgetScreens.INBOX);
+            }}
+          >
+            <Icon
+              src={require('@tabler/icons/arrow-left.svg')}
+              className='h-6 w-6 text-gray-600 dark:text-gray-400'
+            />
+          </button>
+
+          <Text size='sm' weight='bold' truncate>
+            {intl.formatMessage(messages.title)}
+          </Text>
+        </HStack>
+      }
+      isOpen={isOpen}
+      isToggleable={false}
+      onToggle={toggleChatPane}
+    />
+  );
+};
+
+export default ChatSearchHeader;

app/soapbox/queries/search.ts

@@ -1,27 +1,54 @@
-import { useQuery } from '@tanstack/react-query';
+import { useInfiniteQuery } from '@tanstack/react-query';
 
+import { getNextLink } from 'soapbox/api';
 import { useApi } from 'soapbox/hooks';
+import { Account } from 'soapbox/types/entities';
+import { PaginatedResult } from 'soapbox/utils/queries';
 
 export default function useAccountSearch(q: string) {
   const api = useApi();
 
-  const getAccountSearch = async(q: string) => {
-    if (typeof q === 'undefined') {
-      return null;
-    }
+  const getAccountSearch = async(q: string, pageParam: { link?: string }): Promise<PaginatedResult<Account>> => {
+    const nextPageLink = pageParam?.link;
+    const uri = nextPageLink || '/api/v1/accounts/search';
 
-    const { data } = await api.get('/api/v1/accounts/search', {
+    const response = await api.get(uri, {
       params: {
         q,
+        limit: 10,
         followers: true,
       },
     });
+    const { data } = response;
 
-    return data;
+    const link = getNextLink(response);
+    const hasMore = !!link;
+
+    return {
+      result: data,
+      link,
+      hasMore,
+    };
   };
 
-  return useQuery(['search', 'accounts', q], () => getAccountSearch(q), {
+  const queryInfo = useInfiniteQuery(['search', 'accounts', q], ({ pageParam }) => getAccountSearch(q, pageParam), {
     keepPreviousData: true,
-    placeholderData: [],
-  });
+    getNextPageParam: (config) => {
+      if (config.hasMore) {
+        return { link: config.link };
+      }
+
+      return undefined;
+    },
+  });
+
+  const data = queryInfo.data?.pages.reduce<Account[]>(
+    (prev: Account[], curr) => [...prev, ...curr.result],
+    [],
+  );
+
+  return {
+    ...queryInfo,
+    data,
+  };
 }