feat(frontend): Implement threaded comment UI
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fullsizemalt
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1 changed files with 144 additions and 33 deletions
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@ -3,15 +3,18 @@
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import { useState, useEffect } from "react"
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import { Button } from "@/components/ui/button"
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import { Textarea } from "@/components/ui/textarea"
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import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
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import { Card, CardContent } from "@/components/ui/card"
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import { formatDistanceToNow } from "date-fns"
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import { getApiUrl } from "@/lib/api-config"
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import { MessageCircle, CornerDownRight, Heart } from "lucide-react"
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import { cn } from "@/lib/utils"
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interface Comment {
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id: number
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user_id: number
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content: string
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created_at: string
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parent_id: number | null
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}
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interface CommentSectionProps {
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@ -30,7 +33,7 @@ export function CommentSection({ entityType, entityId }: CommentSectionProps) {
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const fetchComments = async () => {
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try {
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const res = await fetch(`${getApiUrl()}/social/comments?${entityType}_id=${entityId}`)
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const res = await fetch(`${getApiUrl()}/social/comments?${entityType}_id=${entityId}&limit=100`)
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if (res.ok) {
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const data = await res.json()
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setComments(data)
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@ -40,9 +43,9 @@ export function CommentSection({ entityType, entityId }: CommentSectionProps) {
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}
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}
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const handleSubmit = async (e: React.FormEvent) => {
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const handleSubmit = async (e: React.FormEvent, parentId: number | null = null, content: string = newComment) => {
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e.preventDefault()
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if (!newComment.trim()) return
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if (!content.trim()) return
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const token = localStorage.getItem("token")
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if (!token) {
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@ -52,7 +55,10 @@ export function CommentSection({ entityType, entityId }: CommentSectionProps) {
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setLoading(true)
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try {
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const body: any = { content: newComment }
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const body: any = {
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content: content,
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parent_id: parentId
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}
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body[`${entityType}_id`] = entityId
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const res = await fetch(`${getApiUrl()}/social/comments`, {
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@ -77,41 +83,146 @@ export function CommentSection({ entityType, entityId }: CommentSectionProps) {
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}
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}
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return (
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<div className="space-y-6">
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<h3 className="text-xl font-semibold">Comments</h3>
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// Tree builder
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const rootComments = comments.filter(c => c.parent_id === null)
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const getReplies = (parentId: number) => comments.filter(c => c.parent_id === parentId).sort((a, b) => new Date(a.created_at).getTime() - new Date(b.created_at).getTime())
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<form onSubmit={handleSubmit} className="space-y-4">
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return (
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<div className="space-y-8">
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<h3 className="text-xl font-semibold flex items-center gap-2">
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<MessageCircle className="h-5 w-5" />
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Discussion
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</h3>
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{/* Root Post Form */}
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<div className="flex gap-4">
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<div className="flex-1">
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<form onSubmit={(e) => handleSubmit(e)} className="space-y-4">
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<Textarea
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placeholder="Join the discussion..."
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placeholder="Share your thoughts..."
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value={newComment}
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onChange={(e) => setNewComment(e.target.value)}
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required
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className="min-h-[100px]"
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/>
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<div className="flex justify-end">
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<Button type="submit" disabled={loading || !newComment.trim()}>
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{loading ? "Posting..." : "Post Comment"}
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</Button>
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</form>
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<div className="space-y-4">
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{comments.length === 0 ? (
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<p className="text-muted-foreground">No comments yet.</p>
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) : (
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comments.map(comment => (
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<Card key={comment.id}>
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<CardContent className="pt-4">
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<div className="flex justify-between items-start mb-2">
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<span className="font-semibold text-sm">User #{comment.user_id}</span>
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<span className="text-xs text-muted-foreground">
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{formatDistanceToNow(new Date(comment.created_at), { addSuffix: true })}
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</span>
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</div>
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<p className="text-sm whitespace-pre-wrap">{comment.content}</p>
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</CardContent>
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</Card>
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</form>
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</div>
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</div>
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<div className="space-y-6">
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{rootComments.length === 0 ? (
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<p className="text-muted-foreground text-center py-8">No comments yet. Be the first!</p>
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) : (
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rootComments.map(comment => (
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<CommentItem
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key={comment.id}
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comment={comment}
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getReplies={getReplies}
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onReply={handleSubmit}
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/>
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))
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)}
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</div>
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</div>
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)
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}
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function CommentItem({ comment, getReplies, onReply }: {
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comment: Comment,
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getReplies: (id: number) => Comment[],
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onReply: (e: React.FormEvent, parentId: number, content: string) => Promise<void>
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}) {
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const [isReplying, setIsReplying] = useState(false)
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const [replyContent, setReplyContent] = useState("")
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const [submitting, setSubmitting] = useState(false)
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const replies = getReplies(comment.id)
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const handleReplySubmit = async (e: React.FormEvent) => {
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setSubmitting(true)
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await onReply(e, comment.id, replyContent)
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setSubmitting(false)
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setIsReplying(false)
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setReplyContent("")
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}
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return (
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<div className="group">
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<div className="flex gap-3">
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<div className="flex flex-col items-center">
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<div className="h-8 w-8 rounded-full bg-primary/10 flex items-center justify-center text-xs font-bold text-primary">
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{comment.user_id}
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</div>
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{(replies.length > 0) && <div className="w-px h-full bg-border my-2" />}
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</div>
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<div className="flex-1 space-y-2 pb-6">
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<div className="flex items-center gap-2">
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<span className="font-semibold text-sm">User #{comment.user_id}</span>
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<span className="text-xs text-muted-foreground">
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• {formatDistanceToNow(new Date(comment.created_at), { addSuffix: true })}
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</span>
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</div>
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<div className="text-sm leading-relaxed whitespace-pre-wrap">
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{comment.content}
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</div>
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<div className="flex items-center gap-4 pt-1">
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<Button
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variant="ghost"
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size="sm"
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className={cn("h-6 px-2 text-xs text-muted-foreground gap-1 hover:text-primary", isReplying && "text-primary bg-primary/5")}
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onClick={() => setIsReplying(!isReplying)}
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>
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<MessageCircle className="h-3 w-3" />
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Reply
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</Button>
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<Button variant="ghost" size="sm" className="h-6 px-2 text-xs text-muted-foreground gap-1 hover:text-red-500">
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<Heart className="h-3 w-3" />
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Like
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</Button>
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</div>
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{isReplying && (
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<div className="mt-4 pl-4 border-l-2 border-primary/20">
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<form onSubmit={handleReplySubmit} className="space-y-3">
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<Textarea
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placeholder={`Reply to User #${comment.user_id}...`}
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value={replyContent}
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onChange={(e) => setReplyContent(e.target.value)}
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autoFocus
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className="min-h-[80px]"
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/>
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<div className="flex justify-end gap-2">
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<Button type="button" variant="ghost" onClick={() => setIsReplying(false)}>Cancel</Button>
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<Button type="submit" size="sm" disabled={submitting || !replyContent.trim()}>
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Reply
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</Button>
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</div>
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</form>
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</div>
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)}
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{/* Recursive Replies */}
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{replies.length > 0 && (
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<div className="mt-4 space-y-4">
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{replies.map(reply => (
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<CommentItem
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key={reply.id}
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comment={reply}
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getReplies={getReplies}
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onReply={onReply}
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/>
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))}
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</div>
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)}
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</div>
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</div>
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</div>
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)
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}
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