Differential D7774 Diff 26850 native/search/message-search.react.js

Changeset View

Standalone View

native/search/message-search.react.js

	// @flow			// @flow

	import invariant from 'invariant';			import invariant from 'invariant';
	import * as React from 'react';			import * as React from 'react';
	import { View } from 'react-native';			import { View } from 'react-native';
				import { FlatList } from 'react-native-gesture-handler';

	import type { MessageInfo } from 'lib/types/message-types.js';			import { messageListData } from 'lib/selectors/chat-selectors.js';
				import { createMessageInfo } from 'lib/shared/message-utils.js';
				import { useSearchMessages } from 'lib/shared/search-utils.js';
				import type { RawMessageInfo } from 'lib/types/message-types.js';
	import type { ThreadInfo } from 'lib/types/thread-types.js';			import type { ThreadInfo } from 'lib/types/thread-types.js';

	import SearchFooter from './search-footer.react.js';			import SearchFooter from './search-footer.react.js';
	import { MessageSearchContext } from './search-provider.react.js';			import { MessageSearchContext } from './search-provider.react.js';
				import { useHeightMeasurer } from '../chat/chat-context.js';
	import type { ChatNavigationProp } from '../chat/chat.react.js';			import type { ChatNavigationProp } from '../chat/chat.react.js';
				import { MessageListContextProvider } from '../chat/message-list-types.js';
				import MessageResult from '../chat/message-result.react.js';
				import ListLoadingIndicator from '../components/list-loading-indicator.react.js';
	import type { NavigationRoute } from '../navigation/route-names.js';			import type { NavigationRoute } from '../navigation/route-names.js';
				import { useSelector } from '../redux/redux-utils.js';
	import { useStyles } from '../themes/colors.js';			import { useStyles } from '../themes/colors.js';
				import type { ChatMessageItemWithHeight } from '../types/chat-types.js';

	export type MessageSearchParams = {			export type MessageSearchParams = {
	+threadInfo: ThreadInfo,			+threadInfo: ThreadInfo,
	};			};

	export type MessageSearchProps = {			export type MessageSearchProps = {
	+navigation: ChatNavigationProp<'MessageSearch'>,			+navigation: ChatNavigationProp<'MessageSearch'>,
	+route: NavigationRoute<'MessageSearch'>,			+route: NavigationRoute<'MessageSearch'>,
	};			};

	function MessageSearch(props: MessageSearchProps): React.Node {			function MessageSearch(props: MessageSearchProps): React.Node {
	const searchContext = React.useContext(MessageSearchContext);			const searchContext = React.useContext(MessageSearchContext);
	invariant(searchContext, 'searchContext should be set');			invariant(searchContext, 'searchContext should be set');
	const { query, clearQuery } = searchContext;			const { query, clearQuery } = searchContext;
				const { threadInfo } = props.route.params;

	React.useEffect(() => {			React.useEffect(() => {
	return props.navigation.addListener('beforeRemove', () => {			return props.navigation.addListener('beforeRemove', () => {
	clearQuery();			clearQuery();
	});			});
	}, [props.navigation, clearQuery]);			}, [props.navigation, clearQuery]);

	// eslint-disable-next-line no-unused-vars
	const [lastID, setLastID] = React.useState();			const [lastID, setLastID] = React.useState();

	// eslint-disable-next-line no-unused-vars
	const [searchResults, setSearchResults] = React.useState([]);			const [searchResults, setSearchResults] = React.useState([]);
				const [endReached, setEndReached] = React.useState(false);

	// eslint-disable-next-line no-unused-vars
	const appendSearchResults = React.useCallback(			const appendSearchResults = React.useCallback(
	(newMessages: $ReadOnlyArray<MessageInfo>) => {			(newMessages: $ReadOnlyArray<RawMessageInfo>, end: boolean) => {
	setSearchResults(oldMessages => [...oldMessages, ...newMessages]);			setSearchResults(oldMessages => [...oldMessages, ...newMessages]);
				setEndReached(end);
	},			},
	[],			[],
	);			);

				const searchMessages = useSearchMessages();

	React.useEffect(() => {			React.useEffect(() => {
	setSearchResults([]);			setSearchResults([]);
	setLastID(undefined);			setLastID(undefined);
	}, [query]);			}, [query, searchMessages]);

	const styles = useStyles(unboundStyles);			React.useEffect(
				() => searchMessages(query, threadInfo.id, appendSearchResults, lastID),
				[appendSearchResults, lastID, query, searchMessages, threadInfo.id],
				);

				const userInfos = useSelector(state => state.userStore.userInfos);

				const translatedSearchResults = React.useMemo(() => {
				const threadInfos = { [threadInfo.id]: threadInfo };
				return searchResults
				.map(rawMessageInfo =>
				createMessageInfo(rawMessageInfo, null, userInfos, threadInfos),
				)
				.filter(Boolean);
				}, [searchResults, threadInfo, userInfos]);

				const chatMessageInfos = useSelector(
				messageListData(threadInfo.id, translatedSearchResults),
				);

				const filteredChatMessageInfos = React.useMemo(() => {
				if (!chatMessageInfos) {
				return null;
				}

				const idSet = new Set(translatedSearchResults.map(item => item.id));

				const chatMessageInfoItems = chatMessageInfos.filter(
				item => item.messageInfo && idSet.has(item.messageInfo.id),
				);

				const uniqueChatMessageInfoItemsMap = new Map();
				chatMessageInfoItems.forEach(
				item =>
				item.messageInfo &&
				item.messageInfo.id &&
				uniqueChatMessageInfoItemsMap.set(item.messageInfo.id, item),
				);

				const sortedChatMessageInfoItems = [];
				for (let i = 0; i < translatedSearchResults.length; i++) {
				sortedChatMessageInfoItems.push(
				uniqueChatMessageInfoItemsMap.get(translatedSearchResults[i].id),
				);
				}
				if (!endReached) {
				sortedChatMessageInfoItems.push({ itemType: 'loader' });
				}

				return sortedChatMessageInfoItems.filter(Boolean);
				}, [chatMessageInfos, endReached, translatedSearchResults]);

				const [measuredMessages, setMeasuredMessages] = React.useState([]);

				const measureMessages = useHeightMeasurer();
				const measureCallback = React.useCallback(
				(listDataWithHeights: $ReadOnlyArray<ChatMessageItemWithHeight>) => {
				setMeasuredMessages(listDataWithHeights);
				},
				[setMeasuredMessages],
				);

				React.useEffect(() => {
				measureMessages(filteredChatMessageInfos, threadInfo, measureCallback);
				}, [filteredChatMessageInfos, measureCallback, measureMessages, threadInfo]);

				const [messageVerticalBounds, setMessageVerticalBounds] = React.useState();
				const scrollViewContainerRef = React.useRef();

				const onLayout = React.useCallback(() => {
				scrollViewContainerRef.current?.measure(
				(x, y, width, height, pageX, pageY) => {
				if (
				height === null \|\|
				height === undefined \|\|
				pageY === null \|\|
				pageY === undefined
				) {
				return;
				}

				setMessageVerticalBounds({ height, y: pageY });
				},
				);
				}, []);

				const renderItem = React.useCallback(
				({ item }) => {
				if (item.itemType === 'loader') {
				return <ListLoadingIndicator />;
				}
				return (
				<MessageResult
				key={item.messageInfo.id}
				item={item}
				threadInfo={threadInfo}
				navigation={props.navigation}
				route={props.route}
				messageVerticalBounds={messageVerticalBounds}
				/>
				);
				},
				[messageVerticalBounds, props.navigation, props.route, threadInfo],
				);

				const footer = React.useMemo(() => {
	if (query === '') {			if (query === '') {
				return <SearchFooter text="Your search results will appear here" />;
				}
				if (!endReached) {
				return null;
				}
				if (measuredMessages.length > 0) {
				return <SearchFooter text="End of results" />;
				}
				const text =
				'No results, please try using different keywords to refine your search';
				return <SearchFooter text={text} />;
				}, [query, endReached, measuredMessages.length]);

				const onEndOfLoadedMessagesReached = React.useCallback(() => {
				if (endReached) {
				return;
				}
				setLastID(oldestMessageID(measuredMessages));
				}, [endReached, measuredMessages, setLastID]);

				const styles = useStyles(unboundStyles);

	return (			return (
	<View style={styles.content}>			<MessageListContextProvider threadInfo={threadInfo}>
	<SearchFooter text="Your search results will appear here" />			<View
				style={styles.content}
				ref={scrollViewContainerRef}
				onLayout={onLayout}
				>
				<FlatList
				renderItem={renderItem}
				data={measuredMessages}
				onEndReached={onEndOfLoadedMessagesReached}
				ListFooterComponent={footer}
				/>
	</View>			</View>
				</MessageListContextProvider>
	);			);
	}			}

	return null;			function oldestMessageID(data: $ReadOnlyArray<ChatMessageItemWithHeight>) {
				for (let i = data.length - 1; i >= 0; i--) {
				if (data[i].itemType === 'message' && data[i].messageInfo.id) {
				return data[i].messageInfo.id;
				}
				}
				return undefined;
	}			}

	const unboundStyles = {			const unboundStyles = {
	content: {			content: {
	height: '100%',			height: '100%',
	backgroundColor: 'panelBackground',			backgroundColor: 'panelBackground',
	},			},
	};			};

	export default MessageSearch;			export default MessageSearch;