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diff --git a/lib/hooks/child-threads.js b/lib/hooks/child-threads.js
--- a/lib/hooks/child-threads.js
+++ b/lib/hooks/child-threads.js
@@ -102,14 +102,15 @@
);
}, [allSubchannelsList, searchResultIDs, searchTextExists]);
+ const messageStore = useSelector(state => state.messageStore);
const threadIDsWithNoMessages = React.useMemo(
() =>
new Set(
filteredSubchannelsChatList
- .filter(item => !item.mostRecentMessageInfo)
- .map(item => item.threadInfo.id),
+ .map(item => item.threadInfo.id)
+ .filter(id => messageStore.threads[id]?.messageIDs.length === 0),
),
- [filteredSubchannelsChatList],
+ [filteredSubchannelsChatList, messageStore],
);
const dispatchActionPromise = useDispatchActionPromise();
const fetchSingleMostRecentMessages =
diff --git a/lib/hooks/message-hooks.js b/lib/hooks/message-hooks.js
--- a/lib/hooks/message-hooks.js
+++ b/lib/hooks/message-hooks.js
@@ -1,6 +1,11 @@
// @flow
+import * as React from 'react';
+
+import { messageInfoSelector } from '../selectors/chat-selectors.js';
import { getOldestNonLocalMessageID } from '../shared/message-utils.js';
+import type { MessageInfo } from '../types/message-types.js';
+import type { ThreadInfo } from '../types/minimally-encoded-thread-permissions-types.js';
import { useSelector } from '../utils/redux-utils.js';
function useOldestMessageServerID(threadID: string): ?string {
@@ -9,4 +14,42 @@
);
}
-export { useOldestMessageServerID };
+function useGetMessageInfoForPreview(): (
+ threadInfo: ThreadInfo,
+) => Promise<?MessageInfo> {
+ const messageInfos = useSelector(messageInfoSelector);
+ const messageStore = useSelector(state => state.messageStore);
+ return React.useCallback(
+ async threadInfo => {
+ const thread = messageStore.threads[threadInfo.id];
+ if (!thread) {
+ return null;
+ }
+ for (const messageID of thread.messageIDs) {
+ const messageInfo = messageInfos[messageID];
+ if (messageInfo) {
+ return messageInfo;
+ }
+ }
+ return null;
+ },
+ [messageInfos, messageStore],
+ );
+}
+
+function useMessageInfoForPreview(threadInfo: ThreadInfo): ?MessageInfo {
+ const [messageInfo, setMessageInfo] = React.useState<?MessageInfo>();
+
+ const getMessageInfoForPreview = useGetMessageInfoForPreview();
+ React.useEffect(() => {
+ void (async () => {
+ const newMessageInfoForPreview =
+ await getMessageInfoForPreview(threadInfo);
+ setMessageInfo(newMessageInfoForPreview);
+ })();
+ }, [threadInfo, getMessageInfoForPreview]);
+
+ return messageInfo;
+}
+
+export { useOldestMessageServerID, useMessageInfoForPreview };
diff --git a/lib/selectors/chat-selectors.js b/lib/selectors/chat-selectors.js
--- a/lib/selectors/chat-selectors.js
+++ b/lib/selectors/chat-selectors.js
@@ -67,7 +67,6 @@
export type ChatThreadItem = {
+type: 'chatThreadItem',
+threadInfo: ThreadInfo,
- +mostRecentMessageInfo: ?MessageInfo,
+mostRecentNonLocalMessage: ?string,
+lastUpdatedTime: number,
+lastUpdatedTimeIncludingSidebars: number,
@@ -196,7 +195,6 @@
return {
type: 'chatThreadItem',
threadInfo,
- mostRecentMessageInfo,
mostRecentNonLocalMessage,
lastUpdatedTime,
lastUpdatedTimeIncludingSidebars,
diff --git a/lib/shared/thread-utils.js b/lib/shared/thread-utils.js
--- a/lib/shared/thread-utils.js
+++ b/lib/shared/thread-utils.js
@@ -654,7 +654,6 @@
return {
type: 'chatThreadItem',
threadInfo,
- mostRecentMessageInfo: null,
mostRecentNonLocalMessage: null,
lastUpdatedTime: threadInfo.creationTime,
lastUpdatedTimeIncludingSidebars: threadInfo.creationTime,
diff --git a/native/chat/chat-thread-list-item.react.js b/native/chat/chat-thread-list-item.react.js
--- a/native/chat/chat-thread-list-item.react.js
+++ b/native/chat/chat-thread-list-item.react.js
@@ -155,10 +155,7 @@
</SingleLine>
</View>
<View style={styles.row}>
- <MessagePreview
- messageInfo={data.mostRecentMessageInfo}
- threadInfo={data.threadInfo}
- />
+ <MessagePreview threadInfo={data.threadInfo} />
<Text style={lastActivityStyle}>{lastActivity}</Text>
</View>
</View>
@@ -175,7 +172,6 @@
styles.row,
styles.threadDetails,
threadNameStyle,
- data.mostRecentMessageInfo,
],
);
diff --git a/native/chat/message-preview.react.js b/native/chat/message-preview.react.js
--- a/native/chat/message-preview.react.js
+++ b/native/chat/message-preview.react.js
@@ -5,8 +5,8 @@
import { Text } from 'react-native';
import { useThreadChatMentionCandidates } from 'lib/hooks/chat-mention-hooks.js';
+import { useMessageInfoForPreview } from 'lib/hooks/message-hooks.js';
import { useMessagePreview } from 'lib/shared/message-utils.js';
-import { type MessageInfo } from 'lib/types/message-types.js';
import type { ThreadInfo } from 'lib/types/minimally-encoded-thread-permissions-types.js';
import SingleLine from '../components/single-line.react.js';
@@ -14,15 +14,15 @@
import { useStyles } from '../themes/colors.js';
type Props = {
- +messageInfo: ?MessageInfo,
+threadInfo: ThreadInfo,
};
function MessagePreview(props: Props): React.Node {
- const { messageInfo, threadInfo } = props;
+ const { threadInfo } = props;
const chatMentionCandidates = useThreadChatMentionCandidates(threadInfo);
+ const messageInfoForPreview = useMessageInfoForPreview(threadInfo);
const messagePreviewResult = useMessagePreview(
- messageInfo,
+ messageInfoForPreview,
threadInfo,
getDefaultTextMessageRules(chatMentionCandidates).simpleMarkdownRules,
);
diff --git a/native/chat/subchannel-item.react.js b/native/chat/subchannel-item.react.js
--- a/native/chat/subchannel-item.react.js
+++ b/native/chat/subchannel-item.react.js
@@ -16,8 +16,7 @@
+subchannelInfo: ChatThreadItem,
};
function SubchannelItem(props: Props): React.Node {
- const { lastUpdatedTime, threadInfo, mostRecentMessageInfo } =
- props.subchannelInfo;
+ const { lastUpdatedTime, threadInfo } = props.subchannelInfo;
const { uiName } = useResolvedThreadInfo(threadInfo);
const lastActivity = shortAbsoluteDate(lastUpdatedTime);
@@ -37,10 +36,7 @@
<SingleLine style={[styles.name, unreadStyle]}>{uiName}</SingleLine>
</View>
<View style={styles.itemRowContainer}>
- <MessagePreview
- messageInfo={mostRecentMessageInfo}
- threadInfo={threadInfo}
- />
+ <MessagePreview threadInfo={threadInfo} />
<Text style={[styles.lastActivity, unreadStyle]}>{lastActivity}</Text>
</View>
</View>
diff --git a/web/chat/chat-thread-list-item.react.js b/web/chat/chat-thread-list-item.react.js
--- a/web/chat/chat-thread-list-item.react.js
+++ b/web/chat/chat-thread-list-item.react.js
@@ -39,7 +39,6 @@
threadInfo,
lastUpdatedTimeIncludingSidebars,
mostRecentNonLocalMessage,
- mostRecentMessageInfo,
} = item;
const { id: threadID, currentUser } = threadInfo;
@@ -156,10 +155,7 @@
<div className={titleClassName}>{uiName}</div>
</div>
<div className={css.threadRow}>
- <MessagePreview
- messageInfo={mostRecentMessageInfo}
- threadInfo={threadInfo}
- />
+ <MessagePreview threadInfo={threadInfo} />
</div>
</div>
<div>
diff --git a/web/chat/message-preview.react.js b/web/chat/message-preview.react.js
--- a/web/chat/message-preview.react.js
+++ b/web/chat/message-preview.react.js
@@ -5,37 +5,33 @@
import * as React from 'react';
import { useThreadChatMentionCandidates } from 'lib/hooks/chat-mention-hooks.js';
+import { useMessageInfoForPreview } from 'lib/hooks/message-hooks.js';
import { useMessagePreview } from 'lib/shared/message-utils.js';
-import { type MessageInfo } from 'lib/types/message-types.js';
import type { ThreadInfo } from 'lib/types/minimally-encoded-thread-permissions-types.js';
import css from './chat-thread-list.css';
import { getDefaultTextMessageRules } from '../markdown/rules.react.js';
type Props = {
- +messageInfo: ?MessageInfo,
+threadInfo: ThreadInfo,
};
function MessagePreview(props: Props): React.Node {
- const { messageInfo, threadInfo } = props;
+ const { threadInfo } = props;
const chatMentionCandidates = useThreadChatMentionCandidates(threadInfo);
+ const messageInfoForPreview = useMessageInfoForPreview(threadInfo);
const messagePreviewResult = useMessagePreview(
- messageInfo,
+ messageInfoForPreview,
threadInfo,
getDefaultTextMessageRules(chatMentionCandidates).simpleMarkdownRules,
);
- if (!messageInfo) {
+ if (!messagePreviewResult) {
return (
<div className={classNames(css.lastMessage, css.dark, css.italic)}>
No messages
</div>
);
}
- invariant(
- messagePreviewResult,
- 'useMessagePreview should only return falsey if pass null or undefined',
- );
const { message, username } = messagePreviewResult;
let usernameText = null;
diff --git a/web/modals/threads/sidebars/sidebar.react.js b/web/modals/threads/sidebars/sidebar.react.js
--- a/web/modals/threads/sidebars/sidebar.react.js
+++ b/web/modals/threads/sidebars/sidebar.react.js
@@ -5,6 +5,7 @@
import { useModalContext } from 'lib/components/modal-provider.react.js';
import { useThreadChatMentionCandidates } from 'lib/hooks/chat-mention-hooks.js';
+import { useMessageInfoForPreview } from 'lib/hooks/message-hooks.js';
import type { ChatThreadItem } from 'lib/selectors/chat-selectors.js';
import { useMessagePreview } from 'lib/shared/message-utils.js';
import { shortAbsoluteDate } from 'lib/utils/date-utils.js';
@@ -23,7 +24,7 @@
function Sidebar(props: Props): React.Node {
const { sidebar, isLastItem } = props;
- const { threadInfo, lastUpdatedTime, mostRecentMessageInfo } = sidebar;
+ const { threadInfo, lastUpdatedTime } = sidebar;
const { unread } = threadInfo.currentUser;
const { popModal } = useModalContext();
@@ -54,8 +55,9 @@
);
const chatMentionCandidates = useThreadChatMentionCandidates(threadInfo);
+ const messageInfoForPreview = useMessageInfoForPreview(threadInfo);
const messagePreviewResult = useMessagePreview(
- mostRecentMessageInfo,
+ messageInfoForPreview,
threadInfo,
getDefaultTextMessageRules(chatMentionCandidates).simpleMarkdownRules,
);
diff --git a/web/modals/threads/subchannels/subchannel.react.js b/web/modals/threads/subchannels/subchannel.react.js
--- a/web/modals/threads/subchannels/subchannel.react.js
+++ b/web/modals/threads/subchannels/subchannel.react.js
@@ -5,6 +5,7 @@
import { useModalContext } from 'lib/components/modal-provider.react.js';
import { useThreadChatMentionCandidates } from 'lib/hooks/chat-mention-hooks.js';
+import { useMessageInfoForPreview } from 'lib/hooks/message-hooks.js';
import { type ChatThreadItem } from 'lib/selectors/chat-selectors.js';
import { useMessagePreview } from 'lib/shared/message-utils.js';
import { shortAbsoluteDate } from 'lib/utils/date-utils.js';
@@ -22,11 +23,7 @@
function Subchannel(props: Props): React.Node {
const { chatThreadItem } = props;
- const {
- threadInfo,
- mostRecentMessageInfo,
- lastUpdatedTimeIncludingSidebars,
- } = chatThreadItem;
+ const { threadInfo, lastUpdatedTimeIncludingSidebars } = chatThreadItem;
const { unread } = threadInfo.currentUser;
@@ -52,8 +49,9 @@
[lastUpdatedTimeIncludingSidebars],
);
const chatMentionCandidates = useThreadChatMentionCandidates(threadInfo);
+ const messageInfoForPreview = useMessageInfoForPreview(threadInfo);
const messagePreviewResult = useMessagePreview(
- mostRecentMessageInfo,
+ messageInfoForPreview,
threadInfo,
getDefaultTextMessageRules(chatMentionCandidates).simpleMarkdownRules,
);

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