79 lines
2.3 KiB
TypeScript
79 lines
2.3 KiB
TypeScript
"use client";
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/**
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* The quiz button on a content page.
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*
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* Asks the BFF whether this page has a published quiz and renders nothing if
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* not, so it can sit on every content page without leaving an empty slot.
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* Quizzes are for signed-in readers only, so signed out it never asks.
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* Its label tracks progress: Take quiz → Continue quiz → View results.
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*/
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import { useEffect, useState } from "react";
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import Link from "next/link";
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import { ClipboardCheck } from "lucide-react";
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import { useAuth } from "@/components/auth/auth-provider";
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import { quiz, quizActionLabel, type QuizCard } from "@/lib/quiz";
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import { cn } from "@/lib/utils";
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export function QuizButton({
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path,
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className,
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}: {
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/** The content page's own path, e.g. /books/bg/2. */
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path: string;
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className?: string;
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}) {
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const { user } = useAuth();
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const userId = user?.id;
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const [card, setCard] = useState<QuizCard | null>(null);
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// Re-asked when the user changes, so progress appears right after sign-in.
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useEffect(() => {
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if (!userId) return;
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let cancelled = false;
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quiz
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.forPath(path)
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.then((c) => {
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if (!cancelled) setCard(c);
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})
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.catch(() => {
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/* no quiz button is the right failure */
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});
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return () => {
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cancelled = true;
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};
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}, [path, userId]);
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// A card left over from before sign-out is ignored rather than cleared.
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if (!card || !user) return null;
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const done = card.my.state === "completed";
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return (
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<Link
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href={`/quizzes/${card.id}`}
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title={card.title}
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className={cn(
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"inline-flex items-center gap-1.5 rounded-md border px-2.5 py-1 text-xs font-medium transition-colors",
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done
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? "border-border text-muted-foreground hover:bg-muted hover:text-foreground"
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: "border-primary/40 bg-primary/10 text-primary hover:bg-primary/15",
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className,
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)}
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>
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<ClipboardCheck className="size-3.5" />
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{quizActionLabel(card.my.state)}
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{card.my.state === "in_progress" && (
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<span className="tabular-nums opacity-70">
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{card.my.answered}/{card.my.total}
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</span>
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)}
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{done && card.my.score !== undefined && (
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<span className="tabular-nums opacity-70">
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{card.my.score}/{card.my.total}
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</span>
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)}
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</Link>
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);
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}
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