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|
"use client";
import { CardResponse, DeckResponse } from "@/lib/types/cards";
import React, {
ReactNode,
useCallback,
useEffect,
useState,
useTransition,
} from "react";
import { Button } from "../ui/button";
import { ChevronLeftIcon, ChevronRightIcon, RotateCcwIcon } from "lucide-react";
import "./cards.css";
type CardData = {
id: number;
front: ReactNode;
back: ReactNode;
};
// --- Main App Component ---
function Deck({ data, cards }: { data: any; cards: CardData[] }) {
const [currentPage, setCurrentPage] = useState<number>(0);
const [currentIndex, setCurrentIndex] = useState<number>(0);
const [isFlipped, setIsFlipped] = useState<boolean>(false);
const [animationDirection, setAnimationDirection] = useState<
"enter-left" | "enter-right" | "exit-left" | "exit-right" | "none"
>("none");
const [isAnimating, setIsAnimating] = useState<boolean>(false);
const handleFlip = () => {
if (isAnimating) return;
setIsFlipped(!isFlipped);
};
const handleNext = useCallback(() => {
if (isAnimating || currentIndex >= cards.length - 1) return;
setIsAnimating(true);
setIsFlipped(false); // Flip back to front before changing card
setAnimationDirection("exit-left");
setTimeout(() => {
setCurrentIndex((prevIndex) => Math.min(prevIndex + 1, cards.length - 1));
setAnimationDirection("enter-right");
setTimeout(() => {
setAnimationDirection("none");
setIsAnimating(false);
}, 200); // Duration of enter animation
}, 200); // Duration of exit animation
}, [currentIndex, cards.length, isAnimating]);
const handlePrev = useCallback(() => {
if (isAnimating || currentIndex <= 0) return;
setIsAnimating(true);
setIsFlipped(false); // Flip back to front
setAnimationDirection("exit-right");
setTimeout(() => {
setCurrentIndex((prevIndex) => Math.max(prevIndex - 1, 0));
setAnimationDirection("enter-left");
setTimeout(() => {
setAnimationDirection("none");
setIsAnimating(false);
}, 200); // Duration of enter animation
}, 200); // Duration of exit animation
}, [currentIndex, isAnimating]);
// Keyboard navigation
useEffect(() => {
const handleKeyDown = (event: KeyboardEvent) => {
if (isAnimating) return;
if (event.key === "ArrowRight") {
handleNext();
} else if (event.key === "ArrowLeft") {
handlePrev();
} else if (event.key === " " || event.key === "Enter") {
// Space or Enter to flip
event.preventDefault(); // Prevent scrolling if space is pressed
handleFlip();
}
};
window.addEventListener("keydown", handleKeyDown);
return () => {
window.removeEventListener("keydown", handleKeyDown);
};
}, [handleNext, handlePrev, isAnimating]);
const [isPending, startTransition] = useTransition();
const shuffle = () => {
startTransition(async () => {
"use server";
console.log("shuffling deck...");
});
};
if (cards.length === 0) {
return (
<div className="min-h-screen bg-slate-50 dark:bg-slate-900 flex flex-col items-center justify-center p-4 font-inter text-slate-800 dark:text-slate-200">
<p>No flashcards available.</p>
</div>
);
}
const currentCard = cards[currentIndex];
if (!currentCard) return <p>wtf</p>;
return (
<div className="min-h-screen bg-slate-100 dark:bg-slate-900 flex flex-col items-center justify-center p-4 font-inter transition-colors duration-300">
<header>
<h1 className="text-2xl ">Deck: {data.lesson.name}</h1>
<p>{data.lesson.description}</p>
</header>
<div className="w-full max-w-md mb-8 relative">
{/* This div is for positioning the card and managing overflow during animations */}
<div className="relative h-80">
<FlashCard
key={currentCard.id} // Important for re-rendering on card change with animation
isFlipped={isFlipped}
onFlip={handleFlip}
animationDirection={animationDirection}
front={currentCard.front}
back={currentCard.back}
/>
</div>
</div>
<div className="flex items-center justify-between w-full max-w-md mb-6">
<Button
onClick={handlePrev}
disabled={currentIndex === 0 || isAnimating}
variant="outline"
size="icon"
aria-label="Previous card"
>
<ChevronLeftIcon />
</Button>
<div className="text-center">
<p className="text-sm text-slate-600 dark:text-slate-400">
Card {currentIndex + 1} of {cards.length}
</p>
<Button
onClick={handleFlip}
variant="ghost"
size="sm"
className="mt-1 text-slate-600 dark:text-slate-400"
disabled={isAnimating}
>
<RotateCcwIcon className="w-4 h-4 mr-2" /> Flip Card
</Button>
</div>
<Button
onClick={handleNext}
disabled={currentIndex === cards.length - 1 || isAnimating}
variant="outline"
size="icon"
aria-label="Next card"
>
<ChevronRightIcon />
</Button>
</div>
<div className="text-xs text-slate-500 dark:text-slate-400 mt-8">
Use Arrow Keys (← →) to navigate, Space/Enter to flip.
</div>
<Button onClick={shuffle}>Shuffle Deck</Button>
</div>
);
}
export default Deck;
interface FlashcardProps {
isFlipped: boolean;
onFlip: () => void;
animationDirection:
| "enter-left"
| "enter-right"
| "exit-left"
| "exit-right"
| "none";
}
interface ServerCards {
front: ReactNode;
back: ReactNode;
}
function FlashCard({
isFlipped,
onFlip,
animationDirection,
front,
back,
}: FlashcardProps & ServerCards) {
const getAnimationClass = () => {
switch (animationDirection) {
case "enter-right":
return "animate-slide-in-right";
case "enter-left":
return "animate-slide-in-left";
case "exit-right":
return "animate-slide-out-right";
case "exit-left":
return "animate-slide-out-left";
default:
return "";
}
};
return (
<div
className={`w-full max-w-md h-80 perspective group ${getAnimationClass()}`}
onClick={onFlip}
>
<div
className={`relative w-full h-full rounded-xl shadow-xl transition-transform duration-700 ease-in-out transform-style-preserve-3d cursor-pointer ${
isFlipped ? "rotate-y-180" : ""
}`}
>
{front}
{back}
</div>
</div>
);
}
|
