63 lines
1.7 KiB
TypeScript
63 lines
1.7 KiB
TypeScript
"use client";
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import { useEffect, useState } from "react";
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type VerseEntry = {
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verse: number;
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verse_end?: number;
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reference: string;
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};
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export function VerseIndex({
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verses,
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chapter,
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}: {
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verses: VerseEntry[];
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chapter: string;
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}) {
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const [activeVerse, setActiveVerse] = useState<number | null>(null);
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useEffect(() => {
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const observer = new IntersectionObserver(
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(entries) => {
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for (const entry of entries) {
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if (entry.isIntersecting) {
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const id = entry.target.id;
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const num = parseInt(id.replace("verse-", ""));
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if (!isNaN(num)) setActiveVerse(num);
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}
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}
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},
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{ rootMargin: "-20% 0px -60% 0px" },
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);
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const articles = document.querySelectorAll("article[id^='verse-']");
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articles.forEach((el) => observer.observe(el));
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return () => observer.disconnect();
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}, []);
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return (
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<aside className="hidden lg:block w-48 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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Verses
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</h2>
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<nav className="grid grid-cols-3 gap-0.5">
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{verses.map((v) => (
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<a
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key={v.verse}
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href={`#verse-${v.verse}`}
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className={`px-2 py-1 rounded-md text-sm text-center transition-colors ${
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activeVerse === v.verse
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? "bg-primary/10 text-primary font-medium"
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: "text-muted-foreground hover:bg-muted hover:text-foreground"
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}`}
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>
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{v.verse_end ? `${v.verse}–${v.verse_end}` : v.verse}
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</a>
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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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