feat: 频道未读提示

shared/index.tsx

@@ -106,6 +106,8 @@ export {
   useGroupInfo,
   useGroupPanel,
   useIsGroupOwner,
+  useGroupUnread,
+  useGroupTextPanelUnread,
 } from './redux/hooks/useGroup';
 export { useUserInfo, useUserId } from './redux/hooks/useUserInfo';
 export { userActions, groupActions } from './redux/slices';

shared/redux/hooks/useGroup.ts

@@ -1,7 +1,8 @@
 import { useMemo } from 'react';
-import type { GroupInfo, GroupPanel } from '../../model/group';
+import { GroupInfo, GroupPanel, GroupPanelType } from '../../model/group';
 import { isValidStr } from '../../utils/string-helper';
 import { useAppSelector } from './useAppSelector';
+import { useUnread } from './useUnread';
 import { useUserId } from './useUserInfo';
 
 /**
@@ -41,3 +42,28 @@ export function useIsGroupOwner(groupId: string, userId?: string): boolean {
     return typeof selfUserId === 'string' && groupInfo?.owner === selfUserId;
   }
 }
+
+/**
+ * 检查群组是否有未读消息
+ * @param groupId 群组id
+ */
+export function useGroupUnread(groupId: string): boolean {
+  const group = useGroupInfo(groupId);
+  const groupTextPanelIds = (group?.panels ?? [])
+    .filter((panel) => panel.type === GroupPanelType.TEXT)
+    .map((p) => p.id);
+
+  const unread = useUnread(groupTextPanelIds);
+
+  return unread.some((u) => u === true);
+}
+
+/**
+ * 检查群组聊天面板是否有未读消息
+ * @param textPanelId 文字面板id
+ */
+export function useGroupTextPanelUnread(textPanelId: string): boolean {
+  const unread = useUnread([textPanelId]);
+
+  return unread[0];
+}

shared/redux/hooks/useUnread.ts

@@ -0,0 +1,23 @@
+import { useAppSelector } from './useAppSelector';
+
+/**
+ * 返回某些会话是否有未读信息
+ */
+export function useUnread(converseIds: string[]) {
+  const ack = useAppSelector((state) => state.chat.ack);
+  const lastMessageMap = useAppSelector((state) => state.chat.lastMessageMap);
+
+  return converseIds.map((converseId) => {
+    if (
+      ack[converseId] === undefined &&
+      lastMessageMap[converseId] !== undefined
+    ) {
+      // 没有已读记录且远程有数据
+      return true;
+    }
+
+    // 当远端最后一条消息的id > 本地已读状态的最后一条消息id,
+    // 则返回true(有未读消息)
+    return lastMessageMap[converseId] > ack[converseId];
+  });
+}

web/src/components/ChatBox/ChatMessageList/index.tsx

@@ -43,6 +43,10 @@ export const ChatMessageList = React.forwardRef<
 
   const onUpdateReadedMessageRef = useUpdateRef(props.onUpdateReadedMessage);
   useEffect(() => {
+    if (props.messages.length === 0) {
+      return;
+    }
+
     if (containerRef.current?.scrollTop === 0) {
       // 当前列表在最低
       onUpdateReadedMessageRef.current(
@@ -52,6 +56,10 @@ export const ChatMessageList = React.forwardRef<
   }, [props.messages.length]);
 
   const handleScroll = useCallback(() => {
+    if (props.messages.length === 0) {
+      return;
+    }
+
     if (containerRef.current?.scrollTop === 0) {
       onUpdateReadedMessageRef.current(
         props.messages[props.messages.length - 1]._id

web/src/components/ChatBox/useMessageAck.ts

@@ -31,7 +31,7 @@ export function useMessageAck(converseId: string, messages: ChatMessage[]) {
           lastMessageIdRef.current = lastMessageId;
         },
         1000,
-        { leading: false, trailing: true }
+        { leading: true, trailing: true }
       ),
     []
   );

web/src/routes/Main/Content/Group/Sidebar.tsx

@@ -1,9 +1,15 @@
 import React from 'react';
-import { GroupPanelType, isValidStr, useGroupInfo } from 'tailchat-shared';
+import {
+  GroupPanel,
+  GroupPanelType,
+  isValidStr,
+  useGroupInfo,
+} from 'tailchat-shared';
 import { useParams } from 'react-router';
 import { GroupHeader } from './GroupHeader';
 import { GroupSection } from '@/components/GroupSection';
 import { GroupPanelItem } from '@/components/GroupPanelItem';
+import { GroupTextPanelItem } from './TextPanelItem';
 
 interface GroupParams {
   groupId: string;
@@ -17,6 +23,17 @@ export const Sidebar: React.FC = React.memo(() => {
   const groupInfo = useGroupInfo(groupId);
   const groupPanels = groupInfo?.panels ?? [];
 
+  const renderItem = (panel: GroupPanel) =>
+    panel.type === GroupPanelType.TEXT ? (
+      <GroupTextPanelItem groupId={groupId} panel={panel} />
+    ) : (
+      <GroupPanelItem
+        name={panel.name}
+        icon={<div>#</div>}
+        to={`/main/group/${groupId}/${panel.id}`}
+      />
+    );
+
   return (
     <div>
       <GroupHeader groupId={groupId} />
@@ -30,22 +47,11 @@ export const Sidebar: React.FC = React.memo(() => {
                 {groupPanels
                   .filter((sub) => sub.parentId === panel.id)
                   .map((sub) => (
-                    <div key={sub.id}>
+                    <div key={sub.id}>{renderItem(sub)}</div>
-                      <GroupPanelItem
-                        name={sub.name}
-                        icon={<div>#</div>}
-                        to={`/main/group/${groupId}/${sub.id}`}
-                      />
-                    </div>
                   ))}
               </GroupSection>
             ) : (
-              <GroupPanelItem
+              <div key={panel.id}>{renderItem(panel)}</div>
-                key={panel.id}
-                name={panel.name}
-                icon={<div>#</div>}
-                to={`/main/group/${groupId}/${panel.id}`}
-              />
             )
           )}
       </div>

web/src/routes/Main/Content/Group/TextPanelItem.tsx

@@ -0,0 +1,25 @@
+import { GroupPanelItem } from '@/components/GroupPanelItem';
+import React from 'react';
+import { GroupPanel, useGroupTextPanelUnread } from 'tailchat-shared';
+
+interface GroupTextPanelItemProps {
+  groupId: string;
+  panel: GroupPanel;
+}
+export const GroupTextPanelItem: React.FC<GroupTextPanelItemProps> = React.memo(
+  (props) => {
+    const { groupId, panel } = props;
+    const panelId = panel.id;
+    const hasUnread = useGroupTextPanelUnread(panelId);
+
+    return (
+      <GroupPanelItem
+        name={panel.name}
+        icon={<div>#</div>}
+        to={`/main/group/${groupId}/${panel.id}`}
+        badge={hasUnread}
+      />
+    );
+  }
+);
+GroupTextPanelItem.displayName = 'GroupTextPanelItem';