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"use client";
import { CardResponse, DeckResponse } from "@/lib/types/cards";
import React, { useCallback, useEffect, useState } from "react";
import { Button } from "../ui/button";
import { ChevronLeftIcon, ChevronRightIcon, RotateCcwIcon } from "lucide-react";
import "./cards.css";
import Flashcard from "./Card";
// --- Main App Component ---
function Deck({ data }: { data: DeckResponse }) {
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 flashcards = data.cards;
const [isAnimating, setIsAnimating] = useState<boolean>(false);
const handleFlip = () => {
if (isAnimating) return;
setIsFlipped(!isFlipped);
};
const handleNext = useCallback(() => {
if (isAnimating || currentIndex >= flashcards.length - 1) return;
setIsAnimating(true);
setIsFlipped(false); // Flip back to front before changing card
setAnimationDirection("exit-left");
setTimeout(() => {
setCurrentIndex((prevIndex) =>
Math.min(prevIndex + 1, flashcards.length - 1),
);
setAnimationDirection("enter-right");
setTimeout(() => {
setAnimationDirection("none");
setIsAnimating(false);
}, 500); // Duration of enter animation
}, 500); // Duration of exit animation
}, [currentIndex, flashcards.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);
}, 500); // Duration of enter animation
}, 500); // 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]);
if (flashcards.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 = flashcards[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">
<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">
{" "}
{/* Ensure this matches card height */}
<Flashcard
key={currentCard.id} // Important for re-rendering on card change with animation
data={currentCard}
isFlipped={isFlipped}
onFlip={handleFlip}
animationDirection={animationDirection}
/>
</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 {flashcards.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 === flashcards.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>
</div>
);
}
export default Deck;
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