shadcn-ui/apps/v4/components/component-preview.tsx

import * as React from "react"
import Image from "next/image"

import { getRegistryComponent } from "@/lib/registry"
import { ComponentPreviewTabs } from "@/components/component-preview-tabs"
import { ComponentSource } from "@/components/component-source"

export function ComponentPreview({
  name,
  type,
  className,
  previewClassName,
  align = "center",
  hideCode = false,
  chromeLessOnMobile = false,
  styleName = "new-york-v4",
  ...props
}: React.ComponentProps<"div"> & {
  name: string
  styleName?: string
  align?: "center" | "start" | "end"
  description?: string
  hideCode?: boolean
  type?: "block" | "component" | "example"
  chromeLessOnMobile?: boolean
  previewClassName?: string
}) {
  if (type === "block") {
    return (
      <div className="relative aspect-[4/2.5] w-full overflow-hidden rounded-xl border md:-mx-1">
        <Image
          src={`/r/styles/new-york-v4/${name}-light.png`}
          alt={name}
          width={1440}
          height={900}
          className="bg-background absolute top-0 left-0 z-20 w-[970px] max-w-none sm:w-[1280px] md:hidden dark:hidden md:dark:hidden"
        />
        <Image
          src={`/r/styles/new-york-v4/${name}-dark.png`}
          alt={name}
          width={1440}
          height={900}
          className="bg-background absolute top-0 left-0 z-20 hidden w-[970px] max-w-none sm:w-[1280px] md:hidden dark:block md:dark:hidden"
        />
        <div className="bg-background absolute inset-0 hidden w-[1600px] md:block">
          <iframe src={`/view/${styleName}/${name}`} className="size-full" />
        </div>
      </div>
    )
  }

  const Component = getRegistryComponent(name, styleName)

  if (!Component) {
    return (
      <p className="text-muted-foreground mt-6 text-sm">
        Component{" "}
        <code className="bg-muted relative rounded px-[0.3rem] py-[0.2rem] font-mono text-sm">
          {name}
        </code>{" "}
        not found in registry.
      </p>
    )
  }

  return (
    <ComponentPreviewTabs
      className={className}
      previewClassName={previewClassName}
      align={align}
      hideCode={hideCode}
      component={<DynamicComponent name={name} styleName={styleName} />}
      source={
        <ComponentSource
          name={name}
          collapsible={false}
          styleName={styleName}
        />
      }
      chromeLessOnMobile={chromeLessOnMobile}
      {...props}
    />
  )
}

function DynamicComponent({
  name,
  styleName,
}: {
  name: string
  styleName: string
}) {
  const Component = React.useMemo(
    () => getRegistryComponent(name, styleName),
    [name, styleName]
  )

  if (!Component) {
    return null
  }

  return React.createElement(Component)
}