444 lines
13 KiB
TypeScript
444 lines
13 KiB
TypeScript
"use client";
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import { useState, useMemo, useRef } from "react";
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import Link from "next/link";
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import { Card, CardContent } from "@/components/ui/card";
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import { buttonVariants } from "@/components/ui/button";
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import { cn } from "@/lib/utils";
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import { ChevronLeft, ChevronRight, Menu } from "lucide-react";
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import {
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Drawer,
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DrawerClose,
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DrawerContent,
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DrawerHeader,
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DrawerTitle,
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DrawerTrigger,
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} from "@/components/ui/drawer";
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// ---------------------------------------------------------------------------
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// Types
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// ---------------------------------------------------------------------------
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export type LetterItem = {
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slug: string;
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recipientDisplay: string;
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date: string | null;
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year: number | null;
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month: number | null;
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location: string | null;
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};
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type MonthGroup = {
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month: number;
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label: string;
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shortLabel: string;
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count: number;
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letters: LetterItem[];
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};
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// ---------------------------------------------------------------------------
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// Constants
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// ---------------------------------------------------------------------------
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const MONTH_NAMES = [
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"",
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"January",
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"February",
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"March",
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"April",
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"May",
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"June",
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"July",
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"August",
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"September",
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"October",
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"November",
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"December",
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];
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const MONTH_SHORT = [
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"",
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"Jan",
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"Feb",
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"Mar",
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"Apr",
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"May",
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"Jun",
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"Jul",
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"Aug",
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"Sep",
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"Oct",
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"Nov",
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"Dec",
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];
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// ---------------------------------------------------------------------------
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// Build month groups from flat letter list
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// ---------------------------------------------------------------------------
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function buildMonthGroups(letters: LetterItem[]): MonthGroup[] {
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const map = new Map<number, LetterItem[]>();
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for (const letter of letters) {
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const m =
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letter.month && letter.month >= 1 && letter.month <= 12
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? letter.month
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: 0;
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if (!map.has(m)) map.set(m, []);
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map.get(m)!.push(letter);
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}
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const groups: MonthGroup[] = [];
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for (let m = 1; m <= 12; m++) {
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const items = map.get(m);
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if (items && items.length > 0) {
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groups.push({
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month: m,
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label: MONTH_NAMES[m],
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shortLabel: MONTH_SHORT[m],
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count: items.length,
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letters: items,
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});
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}
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}
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const unknown = map.get(0);
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if (unknown && unknown.length > 0) {
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groups.push({
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month: 0,
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label: "Unknown Month",
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shortLabel: "Unknown",
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count: unknown.length,
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letters: unknown,
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});
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}
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return groups;
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}
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// ---------------------------------------------------------------------------
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// Sidebar — matches book chapter sidebar
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// ---------------------------------------------------------------------------
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function MonthSidebar({
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groups,
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activeMonth,
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onSelect,
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}: {
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groups: MonthGroup[];
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activeMonth: number;
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onSelect: (month: number) => void;
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}) {
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return (
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<aside className="hidden lg:block w-56 shrink-0 sticky top-[89px] self-start max-h-[calc(100vh-89px)] overflow-y-auto py-8 pr-4">
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<h2 className="text-xs font-bold uppercase tracking-wider text-muted-foreground mb-3 px-2">
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Months
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</h2>
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<nav className="flex flex-col gap-0.5">
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{groups.map((g) => {
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const isActive = g.month === activeMonth;
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return (
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<button
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key={g.month}
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onClick={() => onSelect(g.month)}
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className={cn(
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"flex items-center justify-between gap-2 px-2 py-1.5 rounded-md text-sm transition-colors text-left",
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isActive
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? "bg-primary/10 text-primary font-medium"
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: "text-muted-foreground hover:bg-muted hover:text-foreground",
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)}
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>
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<span className="truncate">{g.label}</span>
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<span
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className={cn(
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"text-xs tabular-nums shrink-0",
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isActive ? "text-primary/70" : "text-muted-foreground/60",
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)}
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>
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{g.count}
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</span>
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</button>
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);
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})}
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</nav>
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</aside>
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);
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}
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// ---------------------------------------------------------------------------
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// Mobile drawer — matches MobileNav
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// ---------------------------------------------------------------------------
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function MonthMobileNav({
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groups,
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activeMonth,
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onSelect,
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year,
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}: {
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groups: MonthGroup[];
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activeMonth: number;
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onSelect: (month: number) => void;
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year: number;
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}) {
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const [open, setOpen] = useState(false);
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return (
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<Drawer open={open} onOpenChange={setOpen} direction="left">
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<DrawerTrigger
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className={cn(
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buttonVariants({ variant: "outline", size: "sm" }),
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"lg:hidden gap-1.5",
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)}
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>
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<Menu className="size-4" />
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<span className="hidden sm:inline">Months</span>
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</DrawerTrigger>
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<DrawerContent direction="left" className="h-full">
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<DrawerHeader className="text-left border-b border-border pb-4 mb-2">
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<DrawerTitle>Letters from {year}</DrawerTitle>
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</DrawerHeader>
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<nav className="overflow-y-auto px-4 pb-6 pt-2">
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<div className="flex flex-col gap-0.5">
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{groups.map((g) => {
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const isActive = g.month === activeMonth;
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return (
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<DrawerClose key={g.month} asChild>
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<button
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onClick={() => {
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onSelect(g.month);
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setOpen(false);
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}}
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className={cn(
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"flex items-center justify-between gap-2 px-2 py-2 rounded-md text-sm transition-colors text-left",
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isActive
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? "bg-primary/10 text-primary font-medium"
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: "text-muted-foreground hover:bg-muted hover:text-foreground",
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)}
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>
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<span>{g.label}</span>
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<span
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className={cn(
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"text-xs tabular-nums",
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isActive
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? "text-primary/70"
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: "text-muted-foreground/60",
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)}
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>
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{g.count}
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</span>
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</button>
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</DrawerClose>
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);
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})}
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</div>
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</nav>
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</DrawerContent>
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</Drawer>
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);
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}
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// ---------------------------------------------------------------------------
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// Prev / Next nav — matches BbdNav
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// ---------------------------------------------------------------------------
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function MonthNav({
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prev,
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next,
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groups,
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activeMonth,
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onSelect,
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year,
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}: {
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prev: MonthGroup | null;
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next: MonthGroup | null;
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groups: MonthGroup[];
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activeMonth: number;
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onSelect: (month: number) => void;
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year: number;
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}) {
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return (
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<div className="flex items-center justify-between gap-3">
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<div className="flex items-center gap-2">
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<MonthMobileNav
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groups={groups}
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activeMonth={activeMonth}
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onSelect={onSelect}
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year={year}
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/>
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{prev ? (
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<button
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onClick={() => onSelect(prev.month)}
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className={cn(
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buttonVariants({ variant: "outline", size: "sm" }),
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"gap-1.5",
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)}
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>
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<ChevronLeft className="size-4" />
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<span className="hidden sm:inline truncate max-w-[180px]">
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{prev.shortLabel}
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</span>
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<span className="sm:hidden">Previous</span>
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</button>
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) : (
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<div className="hidden lg:block" />
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)}
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</div>
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{next ? (
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<button
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onClick={() => onSelect(next.month)}
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className={cn(
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buttonVariants({ variant: "outline", size: "sm" }),
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"gap-1.5",
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)}
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>
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<span className="hidden sm:inline truncate max-w-[180px]">
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{next.shortLabel}
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</span>
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<span className="sm:hidden">Next</span>
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<ChevronRight className="size-4" />
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</button>
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) : (
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<div />
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)}
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</div>
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);
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}
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// ---------------------------------------------------------------------------
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// Main component — renders header + sidebar + content (entire page layout)
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// ---------------------------------------------------------------------------
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export function YearMonthBrowser({
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letters,
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year,
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totalCount,
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}: {
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letters: LetterItem[];
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year: number;
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totalCount: number;
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}) {
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const allGroups = useMemo(() => buildMonthGroups(letters), [letters]);
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const [activeMonthRaw, setActiveMonth] = useState<number>(
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allGroups.length > 0 ? allGroups[0].month : 1,
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);
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// Derive a safe active month — if the raw value is no longer valid, fall back to the first group
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const activeMonth = useMemo(() => {
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if (allGroups.length === 0) return activeMonthRaw;
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if (allGroups.find((g) => g.month === activeMonthRaw))
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return activeMonthRaw;
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return allGroups[0].month;
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}, [allGroups, activeMonthRaw]);
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const contentRef = useRef<HTMLDivElement>(null);
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const handleMonthSelect = (month: number) => {
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setActiveMonth(month);
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contentRef.current?.scrollIntoView({ behavior: "smooth", block: "start" });
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};
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// Active group + neighbors
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const activeIdx = allGroups.findIndex((g) => g.month === activeMonth);
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const activeGroup = activeIdx >= 0 ? allGroups[activeIdx] : null;
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const prev = activeIdx > 0 ? allGroups[activeIdx - 1] : null;
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const next =
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activeIdx >= 0 && activeIdx < allGroups.length - 1
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? allGroups[activeIdx + 1]
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: null;
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const activeLetters = activeGroup?.letters ?? [];
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const activeLabel = activeGroup?.label ?? "Unknown Month";
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return (
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<>
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{/* Header */}
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<header className="border-b border-border bg-card px-6 py-4 sticky top-0 z-20">
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<div className="max-w-5xl mx-auto">
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<Link
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href="/letters?view=year"
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className="text-sm text-muted-foreground hover:text-foreground transition-colors"
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>
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← Letters by Year
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</Link>
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<h1 className="mt-3 text-2xl font-bold text-foreground">
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<span className="text-primary">Letters: </span>
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{activeLabel} {year}
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</h1>
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<p className="mt-1 text-muted-foreground">
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{activeGroup?.count ?? 0}{" "}
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{(activeGroup?.count ?? 0) === 1 ? "letter" : "letters"} ·{" "}
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{totalCount} total in {year}
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</p>
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</div>
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</header>
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{/* Sidebar + Main */}
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<div className="max-w-5xl mx-auto flex">
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{/* Left sidebar */}
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<MonthSidebar
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groups={allGroups}
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activeMonth={activeMonth}
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onSelect={handleMonthSelect}
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/>
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{/* Main content */}
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<main ref={contentRef} className="flex-1 min-w-0 px-6 py-8 space-y-8">
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{/* Top navigation */}
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<MonthNav
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prev={prev}
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next={next}
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groups={allGroups}
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activeMonth={activeMonth}
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onSelect={handleMonthSelect}
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year={year}
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/>
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{/* Content */}
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{activeLetters.length === 0 ? (
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<div className="py-12 text-center text-muted-foreground">
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<p className="text-lg font-medium">No letters for this month</p>
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</div>
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) : (
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<Card>
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<CardContent className="p-0">
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<ul className="divide-y divide-border">
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{activeLetters.map((letter) => (
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<li key={letter.slug}>
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<Link
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href={`/letters/${letter.slug}`}
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className="flex flex-col sm:flex-row sm:items-center sm:justify-between px-5 py-4 gap-1 sm:gap-4 hover:bg-muted transition-colors"
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>
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<div className="min-w-0">
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<p className="font-medium text-foreground">
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To: {letter.recipientDisplay}
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</p>
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<p className="text-sm text-muted-foreground">
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{letter.date || "Undated"}
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{letter.location ? ` · ${letter.location}` : ""}
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</p>
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</div>
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</Link>
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</li>
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))}
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</ul>
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</CardContent>
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</Card>
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)}
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{/* Bottom navigation */}
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<MonthNav
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prev={prev}
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next={next}
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groups={allGroups}
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activeMonth={activeMonth}
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onSelect={handleMonthSelect}
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year={year}
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/>
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</main>
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</div>
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</>
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);
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}
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