537 lines
16 KiB
TypeScript
537 lines
16 KiB
TypeScript
"use client";
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import { useState, useMemo, useRef, useEffect } 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 { ReadingSettings } from "@/components/reading-settings";
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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 YearGroup = {
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year: number;
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label: string;
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count: number;
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letters: LetterItem[];
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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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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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// ---------------------------------------------------------------------------
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// Grouping helpers
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// ---------------------------------------------------------------------------
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function buildYearGroups(letters: LetterItem[]): YearGroup[] {
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const map = new Map<number, LetterItem[]>();
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for (const letter of letters) {
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const y = letter.year ?? 0;
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if (!map.has(y)) map.set(y, []);
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map.get(y)!.push(letter);
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}
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const groups: YearGroup[] = [];
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// Sorted years first, then undated (0) at the end
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const years = Array.from(map.keys()).sort((a, b) => a - b);
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for (const y of years) {
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if (y === 0) continue;
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const items = map.get(y)!;
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groups.push({
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year: y,
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label: String(y),
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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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const undated = map.get(0);
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if (undated && undated.length > 0) {
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groups.push({
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year: 0,
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label: "Undated",
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count: undated.length,
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letters: undated,
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});
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}
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return groups;
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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({ month: m, label: MONTH_NAMES[m], letters: items });
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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({ month: 0, label: "Unknown Month", letters: unknown });
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}
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return groups;
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}
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// ---------------------------------------------------------------------------
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// Year Sidebar — matches book chapter sidebar
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// ---------------------------------------------------------------------------
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function YearSidebar({
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groups,
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activeYear,
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onSelect,
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}: {
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groups: YearGroup[];
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activeYear: number;
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onSelect: (year: 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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Years
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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.year === activeYear;
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return (
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<button
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key={g.year}
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onClick={() => onSelect(g.year)}
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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 YearMobileNav({
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groups,
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activeYear,
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onSelect,
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title,
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}: {
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groups: YearGroup[];
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activeYear: number;
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onSelect: (year: number) => void;
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title: string;
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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">Years</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>{title}</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.year === activeYear;
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return (
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<DrawerClose key={g.year} asChild>
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<button
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onClick={() => {
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onSelect(g.year);
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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 YearNav({
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prev,
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next,
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groups,
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activeYear,
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onSelect,
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drawerTitle,
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}: {
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prev: YearGroup | null;
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next: YearGroup | null;
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groups: YearGroup[];
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activeYear: number;
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onSelect: (year: number) => void;
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drawerTitle: string;
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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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<YearMobileNav
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groups={groups}
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activeYear={activeYear}
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onSelect={onSelect}
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title={drawerTitle}
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/>
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{prev ? (
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<button
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onClick={() => onSelect(prev.year)}
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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.label}
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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.year)}
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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.label}
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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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// Month section — collapsible group of letters for a single month
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// ---------------------------------------------------------------------------
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function MonthSection({
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group,
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defaultOpen,
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}: {
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group: MonthGroup;
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defaultOpen: boolean;
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}) {
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const [open, setOpen] = useState(defaultOpen);
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return (
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<div>
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<button
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onClick={() => setOpen(!open)}
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className="flex items-center gap-3 w-full px-5 py-3 text-left hover:bg-muted/50 transition-colors"
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>
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<ChevronRight
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className={cn(
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"size-4 text-muted-foreground shrink-0 transition-transform",
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open && "rotate-90",
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)}
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/>
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<span className="font-semibold text-foreground text-sm">
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{group.label}
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</span>
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<span className="text-xs text-muted-foreground tabular-nums">
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{group.letters.length}{" "}
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{group.letters.length === 1 ? "letter" : "letters"}
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</span>
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</button>
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{open && (
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<ul className="divide-y divide-border">
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{group.letters.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 pl-12 py-3.5 gap-1 sm:gap-4 hover:bg-muted transition-colors"
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>
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<div className="min-w-0 flex-1">
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<p className="font-medium text-foreground text-sm">
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To: {letter.recipientDisplay}
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</p>
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<p className="text-xs text-muted-foreground mt-0.5">
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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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)}
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</div>
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);
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}
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// ---------------------------------------------------------------------------
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// Main component — header + sidebar (years) + content (month-grouped letters)
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//
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// Props:
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// letters — all letters for this filter (recipient or location)
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// filterName — display name for the filter ("Mukunda", "New York", etc.)
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// filterType — "recipient" | "location" (used for back link and title)
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// totalCount — total letter count
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// ---------------------------------------------------------------------------
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export function FilterYearBrowser({
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letters,
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filterName,
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filterType,
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totalCount,
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}: {
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letters: LetterItem[];
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filterName: string;
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filterType: "recipient" | "location";
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totalCount: number;
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}) {
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const yearGroups = useMemo(() => buildYearGroups(letters), [letters]);
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const [activeYear, setActiveYear] = useState<number>(
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yearGroups.length > 0 ? yearGroups[0].year : 0,
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);
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const contentRef = useRef<HTMLDivElement>(null);
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// Keep active year valid
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useEffect(() => {
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if (
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yearGroups.length > 0 &&
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!yearGroups.find((g) => g.year === activeYear)
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) {
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setActiveYear(yearGroups[0].year);
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}
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}, [yearGroups, activeYear]);
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const handleYearSelect = (year: number) => {
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setActiveYear(year);
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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 = yearGroups.findIndex((g) => g.year === activeYear);
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const activeGroup = activeIdx >= 0 ? yearGroups[activeIdx] : null;
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const prev = activeIdx > 0 ? yearGroups[activeIdx - 1] : null;
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const next =
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activeIdx >= 0 && activeIdx < yearGroups.length - 1
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? yearGroups[activeIdx + 1]
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: null;
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// Month groups within the active year
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const monthGroups = useMemo(
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() => buildMonthGroups(activeGroup?.letters ?? []),
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[activeGroup],
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);
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// Header text
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const backHref =
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filterType === "recipient"
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? "/letters?view=recipient"
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: "/letters?view=location";
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const backLabel =
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filterType === "recipient" ? "Letters by Recipient" : "Letters by Location";
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const titlePrefix =
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filterType === "recipient" ? "Letters to" : "Letters from";
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const drawerTitle = `${titlePrefix} ${filterName}`;
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const activeYearLabel = activeGroup?.label ?? "Unknown";
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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 flex items-start justify-between gap-4">
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<div className="flex-1 min-w-0">
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<Link
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href={backHref}
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className="text-sm text-muted-foreground hover:text-foreground transition-colors"
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>
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← {backLabel}
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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">
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{titlePrefix} {filterName}:{" "}
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</span>
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{activeYearLabel}
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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"} in{" "}
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{activeYearLabel} · {totalCount} total
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</p>
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</div>
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<div className="shrink-0 pt-1">
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<ReadingSettings />
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</div>
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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 — years */}
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<YearSidebar
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groups={yearGroups}
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activeYear={activeYear}
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onSelect={handleYearSelect}
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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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<YearNav
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prev={prev}
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next={next}
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groups={yearGroups}
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activeYear={activeYear}
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onSelect={handleYearSelect}
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drawerTitle={drawerTitle}
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/>
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{/* Content — letters grouped by month */}
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{monthGroups.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 year</p>
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</div>
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) : (
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<Card className="overflow-hidden">
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<CardContent className="p-0 divide-y divide-border">
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{monthGroups.map((mg, i) => (
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<MonthSection
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key={mg.month}
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group={mg}
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defaultOpen={i === 0 || monthGroups.length <= 3}
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/>
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))}
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</CardContent>
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</Card>
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)}
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{/* Bottom navigation */}
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<YearNav
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prev={prev}
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next={next}
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groups={yearGroups}
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activeYear={activeYear}
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onSelect={handleYearSelect}
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drawerTitle={drawerTitle}
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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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