463 lines
13 KiB
TypeScript
463 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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getIsoContent,
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getIsoSidebarItems,
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type IsoVerse,
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type IsoIntroSegment,
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type IsoSidebarItem,
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} from "@/lib/iso";
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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 { 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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// ---------------------------------------------------------------------------
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// Type guards
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// ---------------------------------------------------------------------------
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function isVerse(content: IsoVerse | IsoIntroSegment): content is IsoVerse {
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return "mantra" in content && "devanagari" in content;
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}
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function isIntroSegment(
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content: IsoVerse | IsoIntroSegment,
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): content is IsoIntroSegment {
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return "paragraphs" in content && "order" in content;
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}
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// ---------------------------------------------------------------------------
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// Metadata
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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<{ mantra: string }>;
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searchParams: Promise<Record<string, string | string[] | undefined>>;
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}): Promise<Metadata> {
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const { mantra: slug } = await params;
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const sp = await searchParams;
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const content = await getIsoContent(slug);
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const isVerse_ = content && "mantra" in content && "devanagari" in content;
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const paragraphs = content
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? isVerse_
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? [
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(content as unknown as IsoVerse).translation,
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...(content as unknown as IsoVerse).purport,
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]
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: (content as unknown as IsoIntroSegment).paragraphs
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: undefined;
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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: "Śrī Īśopaniṣad",
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detail: `Mantra ${slug}`,
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quote,
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});
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}
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const title = isVerse_
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? `${(content as unknown as IsoVerse).reference}`
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: content && "title" in content
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? (content as IsoIntroSegment).title
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: `Mantra ${slug}`;
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return ogForChapter("iso", title);
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}
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// ---------------------------------------------------------------------------
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// Page
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// ---------------------------------------------------------------------------
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export default async function IsoMantraPage({
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params,
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}: {
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params: Promise<{ mantra: string }>;
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}) {
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const { mantra: slug } = await params;
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const content = await getIsoContent(slug);
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if (!content) notFound();
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const sidebarItems = await getIsoSidebarItems();
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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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<PageHeader sticky>
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<Link
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href="/books/iso"
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className="text-sm text-muted-foreground hover:text-foreground transition-colors"
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>
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← Śrī Īśopaniṣad
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</Link>
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<h1 className="mt-3 text-2xl font-bold text-foreground">
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{verse && (
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<>
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<span className="text-primary">{verse.reference}: </span>
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{verse.bookTitle}
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</>
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)}
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{intro && intro.title}
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</h1>
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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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<IsoSidebar 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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<IsoNav
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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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<IsoNav
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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: IsoVerse }) {
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return (
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<Card>
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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: IsoIntroSegment }) {
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return (
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<Card>
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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 IsoSidebar({
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items,
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currentSlug,
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}: {
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items: IsoSidebarItem[];
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currentSlug: string;
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}) {
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// Front matter items (front-pages + introduction)
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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-introduction",
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);
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// Mantras = invocation + 1-18
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const mantraItems = items.filter((item) => item.type === "verse");
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// about-the-author comes last
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const aboutAuthorItem = items.find(
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(item) => item.slug === "intro-about-the-author",
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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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{/* 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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{/* Mantras */}
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{mantraItems.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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Mantras
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</h2>
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<nav className="flex flex-col gap-0.5 mb-4">
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{mantraItems.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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{/* About the Author */}
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{aboutAuthorItem && (
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<nav className="flex flex-col gap-0.5">
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<SidebarLink
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item={aboutAuthorItem}
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isActive={aboutAuthorItem.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: IsoSidebarItem;
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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/iso/${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 IsoNav({
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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: IsoSidebarItem | null;
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next: IsoSidebarItem | null;
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sidebarItems: IsoSidebarItem[];
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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 + introduction)
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const frontMatterItems = sidebarItems.filter(
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(i) => i.slug === "intro-front-pages" || i.slug === "intro-introduction",
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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/iso/${i.slug}`,
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type: i.type,
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})),
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});
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}
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// Mantras (invocation + 1-18)
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const mantraItems = sidebarItems.filter((i) => i.type === "verse");
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if (mantraItems.length > 0) {
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mobileNavGroups.push({
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title: "Mantras",
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items: mantraItems.map((i) => ({
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slug: i.slug,
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label: i.label,
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href: `/books/iso/${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 (about-the-author)
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const backMatterItems = sidebarItems.filter(
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(i) => i.slug === "intro-about-the-author",
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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/iso/${i.slug}`,
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type: i.type,
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})),
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});
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}
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return (
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<div className="flex items-center justify-between gap-3">
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<div className="flex items-center gap-2">
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<MobileNav
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groups={mobileNavGroups}
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currentSlug={currentSlug}
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bookTitle="Śrī Īśopaniṣad"
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/>
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{prev ? (
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<Link
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href={`/books/iso/${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.mantra != null && prev.mantra > 0
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? `Mantra ${prev.mantra}`
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: prev.label}
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</span>
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<span className="sm:hidden">Previous</span>
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</Link>
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) : (
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<div className="hidden lg:block" />
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)}
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</div>
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{next ? (
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<Link
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href={`/books/iso/${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.mantra != null && next.mantra > 0
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? `Mantra ${next.mantra}`
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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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