302 lines
8.6 KiB
TypeScript
302 lines
8.6 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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getTtpContent,
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getTtpSidebarItems,
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type TtpChapter,
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type TtpSidebarItem,
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} from "@/lib/ttp";
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import { getProseChapter } from "@/lib/api";
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import { ogForChapter, extractQuoteFromHl, buildOgMeta } from "@/lib/og";
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import { BOOK_NAMES } from "@/lib/constants";
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import { PageHeader } from "@/components/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/mobile-nav";
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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<{ chapter: string }>;
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searchParams: Promise<Record<string, string | string[] | undefined>>;
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}): Promise<Metadata> {
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const { chapter: slug } = await params;
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const sp = await searchParams;
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const chapter = await getProseChapter("ttp", 0, slug);
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const hlQuote = extractQuoteFromHl(sp, chapter?.paragraphs);
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if (hlQuote) {
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return buildOgMeta({ title: BOOK_NAMES["ttp"], quote: hlQuote });
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}
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return ogForChapter("ttp", chapter?.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 TtpChapterPage({
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params,
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}: {
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params: Promise<{ chapter: string }>;
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}) {
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const { chapter: slug } = await params;
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const content = await getTtpContent(slug);
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if (!content) notFound();
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const sidebarItems = await getTtpSidebarItems();
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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
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const isChapter =
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"chapter" in content &&
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typeof (content as TtpChapter).chapter === "number" &&
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(content as TtpChapter).chapter !== null;
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const chapterNum = isChapter ? (content as TtpChapter).chapter : 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/ttp"
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className="text-sm text-muted-foreground hover:text-foreground transition-colors"
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>
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← Transcendental Teachings of Prahlāda Mahārāja
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</Link>
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<h1 className="mt-3 text-2xl font-bold text-foreground">
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{chapterNum != null && (
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<span className="text-primary">Chapter {chapterNum}: </span>
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)}
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{content.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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<TtpSidebar 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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<TtpNav
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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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<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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{content.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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{/* Bottom navigation */}
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<TtpNav
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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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// Sidebar
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// ---------------------------------------------------------------------------
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function TtpSidebar({
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items,
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currentSlug,
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}: {
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items: TtpSidebarItem[];
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currentSlug: string;
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}) {
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const introItems = items.filter((item) => item.type === "intro-segment");
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const chapterItems = items.filter((item) => item.type === "chapter");
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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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{introItems.length > 0 && (
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<>
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<h2 className="text-xs 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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{introItems.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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{/* Chapters */}
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{chapterItems.length > 0 && (
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<>
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<h2 className="text-xs font-bold uppercase tracking-wider text-muted-foreground mb-3 px-2">
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Chapters
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</h2>
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<nav className="flex flex-col gap-0.5">
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{chapterItems.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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</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: TtpSidebarItem;
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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/ttp/${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 TtpNav({
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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: TtpSidebarItem | null;
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next: TtpSidebarItem | null;
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sidebarItems: TtpSidebarItem[];
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currentSlug: string;
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}) {
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const mobileNavGroups: MobileNavGroup[] = [];
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const introItems = sidebarItems.filter((i) => i.type === "intro-segment");
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if (introItems.length > 0) {
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mobileNavGroups.push({
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title: "Front Matter",
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items: introItems.map((i) => ({
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slug: i.slug,
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label: i.label,
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href: `/books/ttp/${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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const chapterItems = sidebarItems.filter((i) => i.type === "chapter");
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if (chapterItems.length > 0) {
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mobileNavGroups.push({
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title: "Chapters",
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items: chapterItems.map((i) => ({
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slug: i.slug,
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label: i.label,
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href: `/books/ttp/${i.slug}`,
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type: i.type,
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})),
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});
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}
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return (
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<div className="flex items-center justify-between gap-3">
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<div className="flex items-center gap-2">
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<MobileNav
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groups={mobileNavGroups}
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currentSlug={currentSlug}
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bookTitle="Transcendental Teachings of Prahlāda Mahārāja"
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/>
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{prev ? (
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<Link
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href={`/books/ttp/${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 === "chapter" && prev.chapter != null
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? `Ch. ${prev.chapter}`
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: prev.label}
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</span>
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<span className="sm:hidden">Previous</span>
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</Link>
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) : (
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<div className="hidden lg:block" />
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)}
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</div>
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{next ? (
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<Link
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href={`/books/ttp/${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 === "chapter" && next.chapter != null
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? `Ch. ${next.chapter}`
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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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