# All files / src/components/ui carousel.tsx

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     "use client"

    import { ComponentProps, createContext, useCallback, useContext, useEffect, useState, KeyboardEvent } from "react"
    import useEmblaCarousel, {
      type UseEmblaCarouselType,
    } from "embla-carousel-react"
    import ArrowLeft from "lucide-react/dist/esm/icons/arrow-left"
    import ArrowRight from "lucide-react/dist/esm/icons/arrow-right"

    import { cn } from "@/lib/utils"
    import { Button } from "@/components/ui/button"

    type CarouselApi = UseEmblaCarouselType[1]
    type UseCarouselParameters = Parameters<typeof useEmblaCarousel>
    type CarouselOptions = UseCarouselParameters[0]
    type CarouselPlugin = UseCarouselParameters[1]

    interface CarouselProps {
      opts?: CarouselOptions
      plugins?: CarouselPlugin
      orientation?: "horizontal" | "vertical"
      setApi?: (api: CarouselApi) => void
    }

    type CarouselContextProps = {
      carouselRef: ReturnType<typeof useEmblaCarousel>[0]
      api: ReturnType<typeof useEmblaCarousel>[1]
      scrollPrev: () => void
      scrollNext: () => void
      canScrollPrev: boolean
      canScrollNext: boolean
    } & CarouselProps

    const CarouselContext = createContext<CarouselContextProps | null>(null)

    function useCarousel() {
      const context = useContext(CarouselContext)

      if (!context) {
        throw new Error("useCarousel must be used within a <Carousel />")
      }

      return context
    }

    function Carousel({
      orientation = "horizontal",
      opts,
      setApi,
      plugins,
      className,
      children,
      ...props
    }: ComponentProps<"div"> & CarouselProps) {
      const [carouselRef, api] = useEmblaCarousel(
        {
          ...opts,
          axis: orientation === "horizontal" ? "x" : "y",
        },
        plugins
      )
      const [canScrollPrev, setCanScrollPrev] = useState(false)
      const [canScrollNext, setCanScrollNext] = useState(false)

      const onSelect = useCallback((api: CarouselApi) => {
        if (!api) return
        setCanScrollPrev(api.canScrollPrev())
        setCanScrollNext(api.canScrollNext())
      }, [])

      const scrollPrev = useCallback(() => {
        api?.scrollPrev()
      }, [api])

      const scrollNext = useCallback(() => {
        api?.scrollNext()
      }, [api])

      const handleKeyDown = useCallback(
        (event: KeyboardEvent<HTMLDivElement>) => {
          if (event.key === "ArrowLeft") {
            event.preventDefault()
            scrollPrev()
          } else if (event.key === "ArrowRight") {
            event.preventDefault()
            scrollNext()
          }
        },
        [scrollPrev, scrollNext]
      )

      useEffect(() => {
        if (!api || !setApi) return
        setApi(api)
      }, [api, setApi])

      useEffect(() => {
        if (!api) return
        api.on("reInit", onSelect)
        api.on("select", onSelect)

        return () => {
          api?.off("select", onSelect)
        }
      }, [api, onSelect])

      return (
        <CarouselContext.Provider
          value={{
            carouselRef,
            api: api,
            opts,
            orientation:
              orientation || (opts?.axis === "y" ? "vertical" : "horizontal"),
            scrollPrev,
            scrollNext,
            canScrollPrev,
            canScrollNext,
          }}
        >
          <div
            onKeyDownCapture={handleKeyDown}
            className={cn("relative", className)}
            role="region"
            aria-roledescription="carousel"
            data-slot="carousel"
            {...props}
          >
            {children}
          </div>
        </CarouselContext.Provider>
      )
    }

    function CarouselContent({ className, ...props }: ComponentProps<"div">) {
      const { carouselRef, orientation } = useCarousel()

      return (
        <div
          ref={carouselRef}
          className="overflow-hidden"
          data-slot="carousel-content"
        >
          <div
            className={cn(
              "flex",
              orientation === "horizontal" ? "-ml-4" : "-mt-4 flex-col",
              className
            )}
            {...props}
          />
        </div>
      )
    }

    function CarouselItem({ className, ...props }: ComponentProps<"div">) {
      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",
            orientation === "horizontal" ? "pl-4" : "pt-4",
            className
          )}
          {...props}
        />
      )
    }

    function CarouselPrevious({
      className,
      variant = "outline",
      size = "icon",
      ...props
    }: ComponentProps<typeof Button>) {
      const { orientation, scrollPrev, canScrollPrev } = useCarousel()

      return (
        <Button
          data-slot="carousel-previous"
          variant={variant}
          size={size}
          className={cn(
            "absolute size-8 rounded-full",
            orientation === "horizontal"
              ? "top-1/2 -left-12 -translate-y-1/2"
              : "-top-12 left-1/2 -translate-x-1/2 rotate-90",
            className
          )}
          disabled={!canScrollPrev}
          onClick={scrollPrev}
          {...props}
        >
          <ArrowLeft />
          <span className="sr-only">Previous slide</span>
        </Button>
      )
    }

    function CarouselNext({
      className,
      variant = "outline",
      size = "icon",
      ...props
    }: ComponentProps<typeof Button>) {
      const { orientation, scrollNext, canScrollNext } = useCarousel()

      return (
        <Button
          data-slot="carousel-next"
          variant={variant}
          size={size}
          className={cn(
            "absolute size-8 rounded-full",
            orientation === "horizontal"
              ? "top-1/2 -right-12 -translate-y-1/2"
              : "-bottom-12 left-1/2 -translate-x-1/2 rotate-90",
            className
          )}
          disabled={!canScrollNext}
          onClick={scrollNext}
          {...props}
        >
          <ArrowRight />
          <span className="sr-only">Next slide</span>
        </Button>
      )
    }

    export {
      type CarouselApi,
      Carousel,
      CarouselContent,
      CarouselItem,
      CarouselPrevious,
      CarouselNext,
    }