feat(04): Phase 4 — in-app notifications
Schema:
- Add NotificationType enum (FOLLOW, REACTION, COMMENT, MESSAGE)
- Add Notification model with recipientPet, actorPet, post, comment
relations; index on [recipientPetId, read, createdAt desc]
Backend:
- notifications router: list (cursor-paginated), unreadCount,
markRead, markAllRead
- follows.create: fire-and-forget FOLLOW notification to followee
- reactions.toggle: REACTION notification on create (skip self)
- comments.create: COMMENT notification with commentId (skip self)
All triggers use .catch(()=>{}) to never fail the main action
UI:
- NotificationBell component with orange badge, polls every 30s
- /notifications page: list with avatar, type icon, text, thumbnail,
read/unread dot; auto-marks all read on visit
- Sidebar: Notifications link activated with NotificationBell
- MobileNav: Bell replaces Search tab (Search still at /search)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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"use client";
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import { useEffect } from "react";
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import Link from "next/link";
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import { Bell, UserPlus, Heart, MessageCircle } from "lucide-react";
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import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
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import { useTRPC } from "@/trpc/client";
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import { useActivePet } from "@/context/ActivePetContext";
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import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar";
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import { getAvatarUrl } from "@/lib/avatar-url";
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import { getMediaUrl } from "@/lib/media-url";
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function formatRelativeTime(date: Date | string): string {
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const diffMs = Date.now() - new Date(date).getTime();
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const diffMins = Math.floor(diffMs / 60000);
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const diffHours = Math.floor(diffMins / 60);
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const diffDays = Math.floor(diffHours / 24);
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if (diffMins < 1) return "just now";
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if (diffMins < 60) return `${diffMins}m`;
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if (diffHours < 24) return `${diffHours}h`;
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if (diffDays < 7) return `${diffDays}d`;
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return new Date(date).toLocaleDateString();
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}
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type NotificationType = "FOLLOW" | "REACTION" | "COMMENT" | "MESSAGE";
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function notificationIcon(type: NotificationType) {
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switch (type) {
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case "FOLLOW": return <UserPlus className="h-4 w-4 text-orange-500" />;
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case "REACTION": return <Heart className="h-4 w-4 text-orange-500" />;
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case "COMMENT": return <MessageCircle className="h-4 w-4 text-orange-500" />;
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case "MESSAGE": return <MessageCircle className="h-4 w-4 text-blue-500" />;
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}
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}
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function notificationText(
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type: NotificationType,
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actorName: string | undefined,
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commentBody: string | undefined
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): string {
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const name = actorName ?? "Someone";
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switch (type) {
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case "FOLLOW": return `${name} started following you`;
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case "REACTION": return `${name} reacted to your post`;
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case "COMMENT": return commentBody
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? `${name} commented: "${commentBody.slice(0, 60)}${commentBody.length > 60 ? "…" : ""}"`
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: `${name} commented on your post`;
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case "MESSAGE": return `${name} sent you a message`;
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}
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}
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export default function NotificationsPage() {
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const trpc = useTRPC();
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const queryClient = useQueryClient();
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const { activePetId } = useActivePet();
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const { data, isLoading } = useQuery({
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...trpc.notifications.list.queryOptions({ petId: activePetId ?? "", limit: 30 }),
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enabled: !!activePetId,
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});
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const markAllReadMutation = useMutation(
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trpc.notifications.markAllRead.mutationOptions({
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onSuccess: () => {
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// Invalidate badge count
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void queryClient.invalidateQueries(
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trpc.notifications.unreadCount.queryOptions({ petId: activePetId ?? "" })
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);
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},
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})
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);
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// Mark all read when landing on the page
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useEffect(() => {
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if (activePetId && data && data.notifications.some((n) => !n.read)) {
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markAllReadMutation.mutate({ petId: activePetId });
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}
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, [activePetId, data]);
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const notifications = data?.notifications ?? [];
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return (
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<div className="max-w-[640px] mx-auto px-4 py-8">
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<h1 className="text-xl font-semibold mb-6 flex items-center gap-2">
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<Bell className="h-5 w-5 text-orange-500" aria-hidden="true" />
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Notifications
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</h1>
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{isLoading && (
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<div className="space-y-3">
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{[...Array(5)].map((_, i) => (
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<div key={i} className="flex items-start gap-3 p-3 rounded-lg animate-pulse">
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<div className="w-10 h-10 rounded-full bg-muted shrink-0" />
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<div className="flex-1 space-y-1.5">
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<div className="h-3 bg-muted rounded w-3/4" />
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<div className="h-3 bg-muted rounded w-1/3" />
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</div>
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</div>
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))}
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</div>
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)}
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{!isLoading && notifications.length === 0 && (
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<div className="flex flex-col items-center gap-3 py-20 text-muted-foreground">
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<Bell className="h-10 w-10 opacity-30" />
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<p className="text-sm">No notifications yet</p>
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<p className="text-xs text-center max-w-[240px]">
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When pets follow you or react to your posts, you'll see it here.
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</p>
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</div>
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)}
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{!isLoading && notifications.length > 0 && (
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<ul className="space-y-1">
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{notifications.map((notif) => {
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const actorAvatarUrl = getAvatarUrl(notif.actorPet?.avatarKey ?? null);
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const postThumbUrl = notif.post?.images?.[0]
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? getMediaUrl(notif.post.images[0].storageKey)
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: null;
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return (
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<li
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key={notif.id}
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className={`flex items-start gap-3 p-3 rounded-lg transition-colors ${
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!notif.read ? "bg-orange-500/5" : "hover:bg-muted/50"
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}`}
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>
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{/* Unread dot */}
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<div className="shrink-0 mt-3">
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{!notif.read ? (
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<span className="w-2 h-2 rounded-full bg-orange-500 block" />
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) : (
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<span className="w-2 h-2 block" />
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)}
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</div>
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{/* Actor avatar + notification type icon */}
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<div className="relative shrink-0">
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<Avatar className="w-10 h-10">
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{actorAvatarUrl && (
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<AvatarImage src={actorAvatarUrl} alt={notif.actorPet?.name ?? ""} />
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)}
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<AvatarFallback className="text-xs bg-muted">
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{notif.actorPet?.name?.[0]?.toUpperCase() ?? "?"}
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</AvatarFallback>
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</Avatar>
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<span className="absolute -bottom-0.5 -right-0.5 w-5 h-5 rounded-full bg-card border flex items-center justify-center">
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{notificationIcon(notif.type as NotificationType)}
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</span>
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</div>
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{/* Text */}
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<div className="flex-1 min-w-0">
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<p className="text-sm leading-snug">
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{notif.actorPet && (
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<Link
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href={`/pets/${notif.actorPet.id}`}
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className="font-semibold hover:underline"
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>
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{notif.actorPet.name}
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</Link>
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)}{" "}
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<span className="text-muted-foreground">
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{notif.type === "FOLLOW" && "started following you"}
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{notif.type === "REACTION" && "reacted to your post"}
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{notif.type === "COMMENT" && notif.comment && (
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<>
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commented: “
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{notif.comment.body.slice(0, 60)}
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{notif.comment.body.length > 60 ? "…" : ""}
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”
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</>
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)}
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{notif.type === "COMMENT" && !notif.comment && "commented on your post"}
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{notif.type === "MESSAGE" && "sent you a message"}
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</span>
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</p>
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<p className="text-xs text-muted-foreground mt-0.5">
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{formatRelativeTime(notif.createdAt)}
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</p>
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</div>
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{/* Post thumbnail (for REACTION / COMMENT) */}
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{postThumbUrl && (
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<div className="shrink-0 w-10 h-10 rounded overflow-hidden bg-muted">
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{/* eslint-disable-next-line @next/next/no-img-element */}
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<img
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src={postThumbUrl}
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alt="Post"
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className="w-full h-full object-cover"
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/>
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</div>
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)}
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</li>
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);
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})}
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</ul>
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)}
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</div>
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);
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}
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