fix(core): comment mention filters (#13062)

#### PR Dependency Tree


* **PR #13062** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Replies in comment threads are now collapsed when there are more than
four, with an option to expand and view all replies.
* Mentions within comments and replies are automatically detected and
tracked.
  * "Show more replies" indicator is now localized for English users.

* **Improvements**
* Filtering for "only my replies" now includes replies where you are
mentioned.
* Enhanced focus behavior in the comment editor for improved usability.
* Updated styling for active and collapsed reply states in comment
threads.

* **Bug Fixes**
* Ensured consistent handling of mentions and reply associations in
comment data.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/components/comment/comment-editor/index.tsx

@@ -108,6 +108,15 @@ export const CommentEditor = forwardRef<CommentEditorRef, CommentEditorProps>(
       [doc, snapshotHelper]
     );
 
+    const focusEditor = useCallback(() => {
+      if (editorRef.current) {
+        const lastChild = editorRef.current.std.store.root?.lastChild();
+        if (lastChild) {
+          focusTextModel(editorRef.current.std, lastChild.id);
+        }
+      }
+    }, [editorRef]);
+
     useEffect(() => {
       let cancel = false;
       if (autoFocus && editorRef.current && doc) {
@@ -119,25 +128,20 @@ export const CommentEditor = forwardRef<CommentEditorRef, CommentEditorProps>(
               'rich-text'
             ) as unknown as RichText;
             if (!richText) return;
-
-            // Finally focus the inline editor
-            const inlineEditor = richText.inlineEditor;
-            richText.focus();
-
             richText.scrollIntoView({
               behavior: 'smooth',
               block: 'center',
             });
-
-            // fixme: the following does not work
-            inlineEditor?.focusEnd();
+            // Finally focus the inline editor
+            richText.focus();
+            focusEditor();
           })
           .catch(console.error);
       }
       return () => {
         cancel = true;
       };
-    }, [autoFocus, doc]);
+    }, [autoFocus, doc, focusEditor]);
 
     useEffect(() => {
       if (doc) {
@@ -179,14 +183,9 @@ export const CommentEditor = forwardRef<CommentEditorRef, CommentEditorProps>(
     const handleClickEditor = useCallback(
       (e: React.MouseEvent) => {
         e.stopPropagation();
-        if (editorRef.current) {
-          const lastChild = editorRef.current.std.store.root?.lastChild();
-          if (lastChild) {
-            focusTextModel(editorRef.current.std, lastChild.id);
-          }
-        }
+        focusEditor();
       },
-      [editorRef]
+      [focusEditor]
     );
 
     return (

packages/frontend/core/src/components/comment/comment-editor/style.css.ts

@@ -12,7 +12,7 @@ export const container = style({
       borderRadius: 16,
       padding: '0 8px',
     },
-    '&[data-readonly="false"]:focus-within': {
+    '&[data-readonly="false"]:is(:focus-within, :active)': {
       borderColor: cssVarV2('layer/insideBorder/primaryBorder'),
       boxShadow: cssVar('activeShadow'),
     },

packages/frontend/core/src/components/comment/sidebar/index.tsx

@@ -293,6 +293,74 @@ const CommentItem = ({
 
   const [menuOpen, setMenuOpen] = useState(false);
 
+  // When the comment item is rendered the first time, the replies will be collapsed by default
+  // The replies will be collapsed when replies length > 4, that is, the comment, first reply and the last 2 replies
+  // will be shown
+  // When new reply is added either by clicking the reply button or synced remotely, we will NOT collapse the replies
+  const [collapsed, setCollapsed] = useState(
+    (comment.replies?.length ?? 0) > 4
+  );
+
+  const renderedReplies = useMemo(() => {
+    // Sort replies ascending by createdAt
+    const sortedReplies =
+      comment.replies?.toSorted((a, b) => a.createdAt - b.createdAt) ?? [];
+    if (sortedReplies.length === 0) return null;
+
+    // If not collapsed or replies are fewer than threshold, render all
+    if (!collapsed || sortedReplies.length <= 4) {
+      return sortedReplies.map(reply => (
+        <ReadonlyCommentRenderer
+          key={reply.id}
+          avatarUrl={reply.user.avatarUrl}
+          name={reply.user.name}
+          time={reply.createdAt}
+          snapshot={reply.content.snapshot}
+        />
+      ));
+    }
+
+    // Collapsed state: first reply + collapsed indicator + last two replies
+    const firstReply = sortedReplies[0];
+    const tailReplies = sortedReplies.slice(-2);
+
+    return (
+      <>
+        {firstReply && (
+          <ReadonlyCommentRenderer
+            key={firstReply.id}
+            avatarUrl={firstReply.user.avatarUrl}
+            name={firstReply.user.name}
+            time={firstReply.createdAt}
+            snapshot={firstReply.content.snapshot}
+          />
+        )}
+        <div
+          className={styles.collapsedReplies}
+          onClick={e => {
+            e.stopPropagation();
+            setCollapsed(false);
+          }}
+        >
+          <div className={styles.collapsedRepliesTitle}>
+            {t['com.affine.comment.reply.show-more']({
+              count: (sortedReplies.length - 4).toString(),
+            })}
+          </div>
+        </div>
+        {tailReplies.map(reply => (
+          <ReadonlyCommentRenderer
+            key={reply.id}
+            avatarUrl={reply.user.avatarUrl}
+            name={reply.user.name}
+            time={reply.createdAt}
+            snapshot={reply.content.snapshot}
+          />
+        ))}
+      </>
+    );
+  }, [collapsed, comment.replies, t]);
+
   return (
     <div
       onClick={handleClickPreview}
@@ -353,19 +421,7 @@ const CommentItem = ({
           time={comment.createdAt}
           snapshot={comment.content.snapshot}
         />
-
-        {/* unlike comment, replies are sorted by createdAt in ascending order */}
-        {comment.replies
-          ?.toSorted((a, b) => a.createdAt - b.createdAt)
-          .map(reply => (
-            <ReadonlyCommentRenderer
-              key={reply.id}
-              avatarUrl={reply.user.avatarUrl}
-              name={reply.user.name}
-              time={reply.createdAt}
-              snapshot={reply.content.snapshot}
-            />
-          ))}
+        {renderedReplies}
       </div>
 
       {highlighting &&
@@ -421,13 +477,31 @@ const CommentList = ({ entity }: { entity: DocCommentEntity }) => {
     }
 
     // Filter by only my replies and mentions
-    if (filterState.onlyMyReplies) {
+    if (filterState.onlyMyReplies && account) {
       filteredComments = filteredComments.filter(comment => {
         return (
-          comment.user.id === account?.id ||
-          comment.replies?.some(reply => reply.user.id === account?.id)
+          comment.user.id === account.id ||
+          comment.mentions.includes(account.id) ||
+          comment.replies?.some(reply => {
+            return (
+              reply.user.id === account.id ||
+              reply.mentions.includes(account.id)
+            );
+          })
         );
       });
+
+      filteredComments = filteredComments.map(comment => {
+        return {
+          ...comment,
+          replies: comment.replies?.filter(reply => {
+            return (
+              reply.user.id === account.id ||
+              reply.mentions.includes(account.id)
+            );
+          }),
+        };
+      });
     }
 
     // Filter by only current mode
@@ -444,8 +518,8 @@ const CommentList = ({ entity }: { entity: DocCommentEntity }) => {
     filterState.showResolvedComments,
     filterState.onlyMyReplies,
     filterState.onlyCurrentMode,
-    account?.id,
     docMode,
+    account,
   ]);
 
   const newPendingComment = useLiveData(entity.pendingComment$);

packages/frontend/core/src/components/comment/sidebar/style.css.ts

@@ -189,3 +189,24 @@ export const time = style({
   color: cssVarV2('text/secondary'),
   fontWeight: '500',
 });
+
+export const collapsedReplies = style({
+  display: 'flex',
+  alignItems: 'center',
+  justifyContent: 'flex-start',
+  cursor: 'pointer',
+  height: '28px',
+  paddingLeft: '42px',
+  borderRadius: 8,
+  selectors: {
+    '&:hover': {
+      backgroundColor: cssVarV2('layer/background/hoverOverlay'),
+    },
+  },
+});
+
+export const collapsedRepliesTitle = style({
+  color: cssVarV2('text/emphasis'),
+  fontSize: cssVar('fontXs'),
+  fontWeight: '500',
+});

packages/frontend/core/src/modules/comment/entities/doc-comment-store.ts

@@ -23,6 +23,7 @@ import type {
   DocCommentListResult,
   DocCommentReply,
 } from '../types';
+import { findMentions } from './utils';
 
 type GQLCommentType =
   ListCommentsQuery['workspace']['comments']['edges'][number]['node'];
@@ -38,10 +39,12 @@ const normalizeUser = (user: GQLUserType) => ({
 
 const normalizeReply = (reply: GQLReplyType): DocCommentReply => ({
   id: reply.id,
+  commentId: reply.commentId,
   content: reply.content as DocCommentContent,
   createdAt: new Date(reply.createdAt).getTime(),
   updatedAt: new Date(reply.updatedAt).getTime(),
   user: normalizeUser(reply.user),
+  mentions: findMentions(reply.content.snapshot.blocks),
 });
 
 const normalizeComment = (comment: GQLCommentType): DocComment => ({
@@ -57,6 +60,7 @@ const normalizeComment = (comment: GQLCommentType): DocComment => ({
         name: '',
         avatarUrl: '',
       },
+  mentions: findMentions(comment.content.snapshot.blocks),
   replies: comment.replies?.map(normalizeReply) ?? [],
 });
 
@@ -172,13 +176,14 @@ export class DocCommentStore extends Entity<{
 
   async createComment(commentInput: {
     content: DocCommentContent;
-    mentions?: string[];
   }): Promise<DocComment> {
     const graphql = this.graphqlService;
     if (!graphql) {
       throw new Error('GraphQL service not found');
     }
 
+    const mentions = findMentions(commentInput.content.snapshot.blocks);
+
     const response = await graphql.gql({
       query: createCommentMutation,
       variables: {
@@ -188,7 +193,7 @@ export class DocCommentStore extends Entity<{
           docMode: this.props.getDocMode(),
           docTitle: this.props.getDocTitle(),
           content: commentInput.content,
-          mentions: commentInput.mentions,
+          mentions,
         },
       },
     });
@@ -257,7 +262,6 @@ export class DocCommentStore extends Entity<{
     commentId: string,
     replyInput: {
       content: DocCommentContent;
-      mentions?: string[];
     }
   ): Promise<DocCommentReply> {
     const graphql = this.graphqlService;
@@ -265,6 +269,8 @@ export class DocCommentStore extends Entity<{
       throw new Error('GraphQL service not found');
     }
 
+    const mentions = findMentions(replyInput.content.snapshot.blocks);
+
     const response = await graphql.gql({
       query: createReplyMutation,
       variables: {
@@ -273,7 +279,7 @@ export class DocCommentStore extends Entity<{
           content: replyInput.content,
           docMode: this.props.getDocMode(),
           docTitle: this.props.getDocTitle(),
-          mentions: replyInput.mentions,
+          mentions: mentions,
         },
       },
     });

packages/frontend/core/src/modules/comment/entities/doc-comment.ts

@@ -1,10 +1,5 @@
 import { type CommentChangeAction, DocMode } from '@affine/graphql';
-import type {
-  BaseSelection,
-  BaseTextAttributes,
-  BlockSnapshot,
-  DeltaInsert,
-} from '@blocksuite/affine/store';
+import type { BaseSelection } from '@blocksuite/affine/store';
 import {
   effect,
   Entity,
@@ -34,19 +29,13 @@ import type {
   DocCommentChangeListResult,
   DocCommentContent,
   DocCommentListResult,
+  DocCommentReply,
   PendingComment,
 } from '../types';
 import { DocCommentStore } from './doc-comment-store';
 
 type DisposeCallback = () => void;
 
-const MentionAttribute = 'mention';
-type ExtendedTextAttributes = BaseTextAttributes & {
-  [MentionAttribute]: {
-    member: string;
-  };
-};
-
 export class DocCommentEntity extends Entity<{
   docId: string;
 }> {
@@ -136,31 +125,6 @@ export class DocCommentEntity extends Entity<{
     return this.framework.get(GlobalContextService).globalContext.docMode.$;
   }
 
-  findMentions(snapshot: BlockSnapshot): string[] {
-    const mentionedUserIds = new Set<string>();
-    if (
-      snapshot.props.type === 'text' &&
-      snapshot.props.text &&
-      'delta' in (snapshot.props.text as any)
-    ) {
-      const delta = (snapshot.props.text as any)
-        .delta as DeltaInsert<ExtendedTextAttributes>[];
-      for (const op of delta) {
-        if (op.attributes?.[MentionAttribute]) {
-          mentionedUserIds.add(op.attributes[MentionAttribute].member);
-        }
-      }
-    }
-
-    for (const block of snapshot.children) {
-      this.findMentions(block).forEach(userId => {
-        mentionedUserIds.add(userId);
-      });
-    }
-
-    return Array.from(mentionedUserIds);
-  }
-
   async commitComment(id: string): Promise<void> {
     const pendingComment = this.pendingComment$.value;
     if (!pendingComment || pendingComment.id !== id) {
@@ -172,9 +136,7 @@ export class DocCommentEntity extends Entity<{
     if (!snapshot) {
       throw new Error('Failed to get snapshot');
     }
-    const mentions = this.findMentions(snapshot.blocks);
     const comment = await this.store.createComment({
-      mentions: mentions,
       content: {
         snapshot,
         preview,
@@ -207,9 +169,7 @@ export class DocCommentEntity extends Entity<{
       throw new Error('Pending reply has no commentId');
     }
 
-    const mentions = this.findMentions(snapshot.blocks);
     const reply = await this.store.createReply(pendingReply.commentId, {
-      mentions,
       content: {
         snapshot,
       },
@@ -434,7 +394,12 @@ export class DocCommentEntity extends Entity<{
 
       if (commentId) {
         // This is a reply change - handle separately
-        this.handleReplyChange(currentComments, action, comment, commentId);
+        const reply = {
+          ...comment,
+          id: id,
+          commentId: commentId,
+        };
+        this.handleReplyChange(currentComments, action, reply, commentId);
         commentsUpdated = true;
       } else {
         // This is a top-level comment change
@@ -479,7 +444,7 @@ export class DocCommentEntity extends Entity<{
   private handleReplyChange(
     currentComments: DocComment[],
     action: CommentChangeAction,
-    reply: DocComment,
+    reply: DocCommentReply,
     parentCommentId: string
   ): void {
     const parentIndex = currentComments.findIndex(

packages/frontend/core/src/modules/comment/entities/utils.ts

@@ -0,0 +1,37 @@
+import type {
+  BaseTextAttributes,
+  BlockSnapshot,
+  DeltaInsert,
+} from '@blocksuite/affine/store';
+
+const MentionAttribute = 'mention';
+type ExtendedTextAttributes = BaseTextAttributes & {
+  [MentionAttribute]: {
+    member: string;
+  };
+};
+
+export function findMentions(snapshot: BlockSnapshot): string[] {
+  const mentionedUserIds = new Set<string>();
+  if (
+    snapshot.props.type === 'text' &&
+    snapshot.props.text &&
+    'delta' in (snapshot.props.text as any)
+  ) {
+    const delta = (snapshot.props.text as any)
+      .delta as DeltaInsert<ExtendedTextAttributes>[];
+    for (const op of delta) {
+      if (op.attributes?.[MentionAttribute]) {
+        mentionedUserIds.add(op.attributes[MentionAttribute].member);
+      }
+    }
+  }
+
+  for (const block of snapshot.children) {
+    findMentions(block).forEach(userId => {
+      mentionedUserIds.add(userId);
+    });
+  }
+
+  return Array.from(mentionedUserIds);
+}

packages/frontend/core/src/modules/comment/types.ts

@@ -18,6 +18,7 @@ export interface BaseComment {
 
 export interface DocComment extends BaseComment {
   resolved: boolean;
+  mentions: string[];
   replies?: DocCommentReply[];
 }
 
@@ -29,7 +30,10 @@ export type PendingComment = {
   commentId?: CommentId; // only for replies, points to the parent comment
 };
 
-export type DocCommentReply = BaseComment;
+export interface DocCommentReply extends BaseComment {
+  commentId: CommentId;
+  mentions: string[];
+}
 
 export type DocCommentContent = {
   snapshot: DocSnapshot; // blocksuite snapshot