Initial commit

components/ui/carousel.tsx

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+import React, {
+  createContext,
+  useContext,
+  useState,
+  useCallback,
+  useRef,
+  useEffect,
+} from 'react';
+import { cn } from '@/lib/utils';
+import { Button } from './button';
+
+interface CarouselContextType {
+  currentIndex: number;
+  totalItems: number;
+  scrollPrev: () => void;
+  scrollNext: () => void;
+  canScrollPrev: boolean;
+  canScrollNext: boolean;
+  orientation: 'horizontal' | 'vertical';
+}
+
+const CarouselContext = createContext<CarouselContextType | undefined>(
+  undefined
+);
+
+function useCarousel() {
+  const context = useContext(CarouselContext);
+  if (!context) {
+    throw new Error('Carousel components must be used within a Carousel');
+  }
+  return context;
+}
+
+interface CarouselProps {
+  children: React.ReactNode;
+  orientation?: 'horizontal' | 'vertical';
+  className?: string;
+  autoPlay?: boolean;
+  autoPlayInterval?: number;
+}
+
+function Carousel({
+  children,
+  orientation = 'horizontal',
+  className,
+  autoPlay = false,
+  autoPlayInterval = 3000,
+}: CarouselProps) {
+  const [currentIndex, setCurrentIndex] = useState(0);
+  const itemCount = React.Children.count(children);
+  const autoPlayTimerRef = useRef<NodeJS.Timeout | null>(null);
+
+  const canScrollPrev = currentIndex > 0;
+  const canScrollNext = currentIndex < itemCount - 1;
+
+  const scrollPrev = useCallback(() => {
+    setCurrentIndex((prev) => Math.max(0, prev - 1));
+  }, []);
+
+  const scrollNext = useCallback(() => {
+    setCurrentIndex((prev) => Math.min(itemCount - 1, prev + 1));
+  }, [itemCount]);
+
+  useEffect(() => {
+    if (!autoPlay) return;
+
+    autoPlayTimerRef.current = setInterval(() => {
+      setCurrentIndex((prev) => {
+        if (prev >= itemCount - 1) {
+          return 0;
+        }
+        return prev + 1;
+      });
+    }, autoPlayInterval);
+
+    return () => {
+      if (autoPlayTimerRef.current) {
+        clearInterval(autoPlayTimerRef.current);
+      }
+    };
+  }, [autoPlay, autoPlayInterval, itemCount]);
+
+  return (
+    <CarouselContext.Provider
+      value={{
+        currentIndex,
+        totalItems: itemCount,
+        scrollPrev,
+        scrollNext,
+        canScrollPrev,
+        canScrollNext,
+        orientation,
+      }}
+    >
+      <div
+        className={cn('relative', className)}
+        role="region"
+        aria-roledescription="carousel"
+        data-slot="carousel"
+      >
+        {children}
+      </div>
+    </CarouselContext.Provider>
+  );
+}
+
+interface CarouselContentProps {
+  className?: string;
+  children: React.ReactNode;
+}
+
+function CarouselContent({ className, children }: CarouselContentProps) {
+  const { currentIndex, orientation } = useCarousel();
+
+  return (
+    <div
+      className={cn('overflow-hidden', className)}
+      data-slot="carousel-content"
+    >
+      <div
+        className={cn(
+          'flex transition-transform duration-300 ease-out',
+          orientation === 'horizontal' ? 'flex-row' : 'flex-col'
+        )}
+        style={{
+          transform:
+            orientation === 'horizontal'
+              ? `translateX(-${currentIndex * 100}%)`
+              : `translateY(-${currentIndex * 100}%)`,
+        }}
+      >
+        {children}
+      </div>
+    </div>
+  );
+}
+
+interface CarouselItemProps {
+  className?: string;
+  children: React.ReactNode;
+}
+
+function CarouselItem({ className, children }: CarouselItemProps) {
+  const { orientation } = useCarousel();
+
+  return (
+    <div
+      role="group"
+      aria-roledescription="slide"
+      data-slot="carousel-item"
+      className={cn('min-w-0 shrink-0 grow-0 basis-full', className)}
+    >
+      {children}
+    </div>
+  );
+}
+
+interface CarouselPreviousProps {
+  className?: string;
+}
+
+function CarouselPrevious({ className }: CarouselPreviousProps) {
+  const { scrollPrev, canScrollPrev, orientation } = useCarousel();
+
+  return (
+    <Button
+      data-slot="carousel-previous"
+      variant="outline"
+      onClick={scrollPrev}
+      disabled={!canScrollPrev}
+      className={cn(
+        'absolute size-10 rounded-full p-0 flex items-center justify-center',
+        orientation === 'horizontal'
+          ? 'top-1/2 left-2 -translate-y-1/2'
+          : 'top-2 left-1/2 -translate-x-1/2 -rotate-90',
+        className
+      )}
+      aria-label="Previous slide"
+    >
+      <svg
+        xmlns="http://www.w3.org/2000/svg"
+        width="24"
+        height="24"
+        viewBox="0 0 24 24"
+        fill="none"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        className="size-4"
+      >
+        <path d="M15 18l-6-6 6-6" />
+      </svg>
+    </Button>
+  );
+}
+
+interface CarouselNextProps {
+  className?: string;
+}
+
+function CarouselNext({ className }: CarouselNextProps) {
+  const { scrollNext, canScrollNext, orientation } = useCarousel();
+
+  return (
+    <Button
+      data-slot="carousel-next"
+      variant="outline"
+      onClick={scrollNext}
+      disabled={!canScrollNext}
+      className={cn(
+        'absolute size-10 rounded-full p-0 flex items-center justify-center',
+        orientation === 'horizontal'
+          ? 'top-1/2 right-2 -translate-y-1/2'
+          : 'bottom-2 left-1/2 -translate-x-1/2 rotate-90',
+        className
+      )}
+      aria-label="Next slide"
+    >
+      <svg
+        xmlns="http://www.w3.org/2000/svg"
+        width="24"
+        height="24"
+        viewBox="0 0 24 24"
+        fill="none"
+        stroke="currentColor"
+        strokeWidth="2"
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        className="size-4"
+      >
+        <path d="M9 18l6-6-6-6" />
+      </svg>
+    </Button>
+  );
+}
+
+export {
+  Carousel,
+  CarouselContent,
+  CarouselItem,
+  CarouselPrevious,
+  CarouselNext,
+  useCarousel,
+};