Comment Thread

1"use client";
2 
3import {
4  memo,
5  useCallback,
6  useEffect,
7  useImperativeHandle,
8  useMemo,
9  useRef,
10  useState,
11} from "react";
12import { cn } from "@/lib/utils";
13import {
14  DEFAULT_COMMENT_THREAD_LABELS,
15  type Comment,
16  type CommentThreadHandle,
17  type CommentThreadProps,
18  type CommentThreadLabels,
19} from "./types";
20import { useCommentState } from "./hooks/use-comment-state";
21import { CommentNode } from "./parts/comment-node";
22import {
23  CommentComposer,
24  type CommentComposerHandle,
25} from "./parts/comment-composer";
26import { CommentEmptyState } from "./parts/comment-empty-state";
27import { defaultRelativeTime } from "./lib/format-time";
28 
29interface CommentThreadInnerProps extends CommentThreadProps {
30  ref?: React.Ref<CommentThreadHandle>;
31}
32 
33function genTempId(): string {
34  if (typeof crypto !== "undefined" && "randomUUID" in crypto) {
35    return `temp-${crypto.randomUUID()}`;
36  }
37  return `temp-${Date.now()}-${Math.random().toString(36).slice(2)}`;
38}
39 
40function CommentThreadInner(props: CommentThreadInnerProps) {
41  const {
42    comments: initialComments,
43    variant = "default",
44    currentUser,
45    maxDepth = 2,
46    indentPx = 24,
47    bodyMaxLines: bodyMaxLinesProp,
48    composerMinRows = 1,
49    composerMaxRows = 6,
50    submitOnEnter = true,
51    pageSize = 10,
52    subscribe,
53    onSubscribeDelta,
54    onAddComment,
55    onLikeComment,
56    onDeleteComment,
57    onReportComment,
58    onLoadMore,
59    commentActions,
60    renderNode,
61    renderViewReplies,
62    renderComposer,
63    composerEmptyState,
64    emptyState,
65    labels: labelsProp,
66    className,
67    composerClassName,
68    nodeClassName,
69    ref,
70  } = props;
71 
72  const bodyMaxLines = bodyMaxLinesProp ?? (variant === "compact" ? 2 : 4);
73 
74  const labels = useMemo<
75    Required<Omit<CommentThreadLabels, "formatRelativeTime">>
76  >(
77    () => ({ ...DEFAULT_COMMENT_THREAD_LABELS, ...labelsProp }),
78    [labelsProp],
79  );
80 
81  const format = useMemo(
82    () => labelsProp?.formatRelativeTime ?? defaultRelativeTime,
83    [labelsProp?.formatRelativeTime],
84  );
85 
86  const { comments, dispatch } = useCommentState({
87    initialComments,
88    subscribe,
89    onSubscribeDelta,
90  });
91 
92  const [replyParentId, setReplyParentId] = useState<string | null>(null);
93  const replyTriggerRef = useRef<HTMLElement | null>(null);
94  const [currentPage, setCurrentPage] = useState(1);
95  const [isLoadingMore, setIsLoadingMore] = useState(false);
96  const [hasMore, setHasMore] = useState(initialComments.length === pageSize);
97// … truncated