459 lines
13 KiB
TypeScript
459 lines
13 KiB
TypeScript
export const dynamic = "force-dynamic";
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import type { Metadata } from "next";
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import Link from "next/link";
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import { notFound } from "next/navigation";
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import {
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getNoiContent,
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getNoiSidebarItems,
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type NoiVerse,
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type NoiIntroSegment,
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type NoiSidebarItem,
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} from "@/lib/noi";
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import { ogForChapter, extractQuoteFromHl, buildOgMeta } from "@/lib/og";
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import { PageHeader } from "@/components/layout/page-header";
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import { JsonLd } from "@/components/seo/json-ld";
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import { articleJsonLd } from "@/lib/jsonld";
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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 { ChevronLeft, ChevronRight } from "lucide-react";
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import { cn } from "@/lib/utils";
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import { MobileNav, type MobileNavGroup } from "@/components/layout/mobile-nav";
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import { FindInPage } from "@/components/layout/find-in-page";
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// ---------------------------------------------------------------------------
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// Type guards
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// ---------------------------------------------------------------------------
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function isVerse(content: NoiVerse | NoiIntroSegment): content is NoiVerse {
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return "text" in content && "devanagari" in content;
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}
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function isIntroSegment(
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content: NoiVerse | NoiIntroSegment,
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): content is NoiIntroSegment {
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return "paragraphs" in content && "order" in content;
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}
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// ---------------------------------------------------------------------------
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// Page
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// ---------------------------------------------------------------------------
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export async function generateMetadata({
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params,
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searchParams,
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}: {
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params: Promise<{ text: string }>;
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searchParams: Promise<Record<string, string | string[] | undefined>>;
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}): Promise<Metadata> {
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const { text: slug } = await params;
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const sp = await searchParams;
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const content = await getNoiContent(slug);
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let paragraphs: string[] | undefined;
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if (content) {
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if ("devanagari" in content) {
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// It's a verse
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paragraphs = [content.translation, ...content.purport];
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} else if ("paragraphs" in content) {
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// It's an intro segment
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paragraphs = content.paragraphs;
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}
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}
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const quote = extractQuoteFromHl(sp, paragraphs);
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if (quote) {
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return buildOgMeta({
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title: "The Nectar of Instruction",
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detail: `Text ${slug}`,
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quote,
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});
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}
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return ogForChapter("noi", `Text ${slug}`);
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}
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export default async function NoiTextPage({
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params,
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}: {
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params: Promise<{ text: string }>;
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}) {
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const { text: slug } = await params;
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const content = await getNoiContent(slug);
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if (!content) notFound();
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const sidebarItems = await getNoiSidebarItems();
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const currentIdx = sidebarItems.findIndex((item) => item.slug === slug);
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const prev = currentIdx > 0 ? sidebarItems[currentIdx - 1] : null;
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const next =
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currentIdx < sidebarItems.length - 1 ? sidebarItems[currentIdx + 1] : null;
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// Build the page title for the header
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const verse = isVerse(content) ? content : null;
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const intro = isIntroSegment(content) ? content : null;
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return (
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<div className="min-h-screen bg-background">
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<JsonLd data={articleJsonLd({ path: `/books/noi/${slug}`, headline: content.title ?? "The Nectar of Instruction", isPartOf: "The Nectar of Instruction" })} />
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<PageHeader sticky>
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<Link
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href="/books/noi"
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className="text-sm text-muted-foreground hover:text-foreground transition-colors"
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>
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← The Nectar of Instruction
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</Link>
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<div className="mt-3 flex items-start justify-between gap-3">
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<h1 className="text-2xl font-bold text-foreground">
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{verse && (
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<>
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<span className="text-primary">Text {verse.text}: </span>
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{verse.title}
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</>
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)}
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{intro && intro.title}
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</h1>
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<FindInPage targetId="book-content" className="shrink-0 mt-0.5" />
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</div>
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</PageHeader>
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<div className="max-w-5xl mx-auto flex">
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{/* Left sidebar */}
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<NoiSidebar items={sidebarItems} currentSlug={slug} />
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{/* Main content */}
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<main className="flex-1 min-w-0 px-6 py-8 space-y-8">
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{/* Top navigation */}
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<NoiNav
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prev={prev}
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next={next}
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sidebarItems={sidebarItems}
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currentSlug={slug}
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/>
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{/* Content */}
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{verse && <VerseContent verse={verse} />}
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{intro && <IntroContent intro={intro} />}
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{/* Bottom navigation */}
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<NoiNav
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prev={prev}
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next={next}
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sidebarItems={sidebarItems}
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currentSlug={slug}
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/>
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</main>
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</div>
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</div>
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);
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}
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// ---------------------------------------------------------------------------
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// Verse content (Devanagari, transliteration, synonyms, translation, purport)
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// ---------------------------------------------------------------------------
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function VerseContent({ verse }: { verse: NoiVerse }) {
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return (
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<Card id="book-content">
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<CardContent className="py-8 px-6 sm:px-8 space-y-8">
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{/* Devanagari */}
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<section>
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<div className="text-xl leading-relaxed text-foreground whitespace-pre-line font-serif text-center">
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{verse.devanagari}
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</div>
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</section>
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{/* Transliteration */}
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<section>
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<div className="text-base text-foreground/80 italic whitespace-pre-line leading-relaxed text-center">
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{verse.transliteration}
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</div>
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</section>
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{/* Synonyms */}
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{verse.synonyms.length > 0 && (
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<section>
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<h2 className="text-sm font-bold uppercase tracking-wider text-muted-foreground mb-3">
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Synonyms
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</h2>
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<div className="text-base text-foreground leading-relaxed">
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{verse.synonyms.map((s, i) => (
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<span key={i}>
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{i > 0 && "; "}
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<span className="font-medium text-foreground/90">
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{s.word}
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</span>
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{"—"}
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{s.meanings.join(", ")}
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</span>
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))}
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</div>
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</section>
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)}
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{/* Translation */}
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<section>
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<h2 className="text-sm font-bold uppercase tracking-wider text-muted-foreground mb-3">
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Translation
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</h2>
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<div
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className="text-base text-foreground font-medium leading-relaxed"
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dangerouslySetInnerHTML={{ __html: verse.translation }}
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/>
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</section>
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{/* Purport */}
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{verse.purport.length > 0 && (
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<section>
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<h2 className="text-sm font-bold uppercase tracking-wider text-muted-foreground mb-3">
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Purport
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</h2>
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<div className="space-y-4">
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{verse.purport.map((p, i) => (
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<div
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key={i}
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className="text-base text-foreground leading-relaxed"
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dangerouslySetInnerHTML={{ __html: p }}
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/>
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))}
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</div>
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</section>
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)}
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</CardContent>
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</Card>
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);
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}
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// ---------------------------------------------------------------------------
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// Intro segment content (paragraphs)
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// ---------------------------------------------------------------------------
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function IntroContent({ intro }: { intro: NoiIntroSegment }) {
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return (
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<Card id="book-content">
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<CardContent className="py-8 px-6 sm:px-8">
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<div className="space-y-4">
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{intro.paragraphs.map((paragraph, i) => (
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<div
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key={i}
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className="text-base text-foreground leading-relaxed"
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dangerouslySetInnerHTML={{ __html: paragraph }}
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/>
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))}
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</div>
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</CardContent>
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</Card>
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);
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}
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// ---------------------------------------------------------------------------
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// Sidebar
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// ---------------------------------------------------------------------------
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function NoiSidebar({
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items,
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currentSlug,
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}: {
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items: NoiSidebarItem[];
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currentSlug: string;
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}) {
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// Front matter items (front-pages + preface)
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const frontMatterItems = items.filter(
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(item) =>
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item.slug === "intro-front-pages" || item.slug === "intro-preface",
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);
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// Texts = 1-11
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const textItems = items.filter((item) => item.type === "verse");
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// Appendixes comes last
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const appendixesItem = items.find((item) => item.slug === "intro-appendixes");
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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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{/* Front Matter */}
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{frontMatterItems.length > 0 && (
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<>
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<h2 className="text-sm font-bold uppercase tracking-wider text-muted-foreground mb-3 px-2">
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Front Matter
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</h2>
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<nav className="flex flex-col gap-0.5 mb-4">
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{frontMatterItems.map((item) => (
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<SidebarLink
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key={item.slug}
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item={item}
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isActive={item.slug === currentSlug}
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/>
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))}
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</nav>
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</>
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)}
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{/* Texts */}
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{textItems.length > 0 && (
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<>
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<h2 className="text-sm font-bold uppercase tracking-wider text-muted-foreground mb-3 px-2">
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Texts
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</h2>
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<nav className="flex flex-col gap-0.5 mb-4">
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{textItems.map((item) => (
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<SidebarLink
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key={item.slug}
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item={item}
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isActive={item.slug === currentSlug}
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/>
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))}
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</nav>
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</>
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)}
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{/* Appendixes */}
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{appendixesItem && (
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<nav className="flex flex-col gap-0.5">
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<SidebarLink
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item={appendixesItem}
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isActive={appendixesItem.slug === currentSlug}
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/>
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</nav>
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)}
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</aside>
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);
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}
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function SidebarLink({
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item,
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isActive,
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}: {
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item: NoiSidebarItem;
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isActive: boolean;
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}) {
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return (
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<Link
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href={`/books/noi/${item.slug}`}
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className={cn(
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"px-2 py-1.5 rounded-md text-sm transition-colors truncate",
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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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title={item.label}
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>
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{item.label}
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</Link>
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);
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}
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// ---------------------------------------------------------------------------
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// Prev / Next navigation
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// ---------------------------------------------------------------------------
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function NoiNav({
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prev,
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next,
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sidebarItems,
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currentSlug,
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}: {
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prev: NoiSidebarItem | null;
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next: NoiSidebarItem | null;
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sidebarItems: NoiSidebarItem[];
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currentSlug: string;
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}) {
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const mobileNavGroups: MobileNavGroup[] = [];
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// Front matter (front-pages + preface)
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const frontMatterItems = sidebarItems.filter(
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(i) => i.slug === "intro-front-pages" || i.slug === "intro-preface",
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);
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if (frontMatterItems.length > 0) {
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mobileNavGroups.push({
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title: "Front Matter",
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items: frontMatterItems.map((i) => ({
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slug: i.slug,
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label: i.label,
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href: `/books/noi/${i.slug}`,
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type: i.type,
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})),
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});
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}
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// Texts (1-11)
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const textItems = sidebarItems.filter((i) => i.type === "verse");
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if (textItems.length > 0) {
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mobileNavGroups.push({
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title: "Texts",
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items: textItems.map((i) => ({
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slug: i.slug,
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label: i.label,
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href: `/books/noi/${i.slug}`,
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type: i.type,
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})),
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});
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}
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// Back matter (appendixes)
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const backMatterItems = sidebarItems.filter(
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(i) => i.slug === "intro-appendixes",
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);
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if (backMatterItems.length > 0) {
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mobileNavGroups.push({
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title: "Back Matter",
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items: backMatterItems.map((i) => ({
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slug: i.slug,
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label: i.label,
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href: `/books/noi/${i.slug}`,
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type: i.type,
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})),
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});
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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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<MobileNav
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groups={mobileNavGroups}
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currentSlug={currentSlug}
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bookTitle="The Nectar of Instruction"
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/>
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{prev ? (
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<Link
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href={`/books/noi/${prev.slug}`}
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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.type === "verse" && prev.text != null
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? `Text ${prev.text}`
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: prev.label}
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</span>
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<span className="sm:hidden">Previous</span>
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</Link>
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) : (
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<div className="hidden lg:block" />
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)}
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</div>
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{next ? (
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<Link
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href={`/books/noi/${next.slug}`}
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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.type === "verse" && next.text != null
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? `Text ${next.text}`
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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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</Link>
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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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