shadcn-ui/apps/v4/examples/base/collapsible-file-tree.tsx

import { Button } from "@/examples/base/ui/button"
import { Card, CardContent, CardHeader } from "@/examples/base/ui/card"
import {
  Collapsible,
  CollapsibleContent,
  CollapsibleTrigger,
} from "@/examples/base/ui/collapsible"
import { Tabs, TabsList, TabsTrigger } from "@/examples/base/ui/tabs"
import { ChevronRightIcon, FileIcon, FolderIcon } from "lucide-react"

type FileTreeItem = { name: string } | { name: string; items: FileTreeItem[] }

export function CollapsibleFileTree() {
  const fileTree: FileTreeItem[] = [
    {
      name: "components",
      items: [
        {
          name: "ui",
          items: [
            { name: "button.tsx" },
            { name: "card.tsx" },
            { name: "dialog.tsx" },
            { name: "input.tsx" },
            { name: "select.tsx" },
            { name: "table.tsx" },
          ],
        },
        { name: "login-form.tsx" },
        { name: "register-form.tsx" },
      ],
    },
    {
      name: "lib",
      items: [{ name: "utils.ts" }, { name: "cn.ts" }, { name: "api.ts" }],
    },
    {
      name: "hooks",
      items: [
        { name: "use-media-query.ts" },
        { name: "use-debounce.ts" },
        { name: "use-local-storage.ts" },
      ],
    },
    {
      name: "types",
      items: [{ name: "index.d.ts" }, { name: "api.d.ts" }],
    },
    {
      name: "public",
      items: [
        { name: "favicon.ico" },
        { name: "logo.svg" },
        { name: "images" },
      ],
    },
    { name: "app.tsx" },
    { name: "layout.tsx" },
    { name: "globals.css" },
    { name: "package.json" },
    { name: "tsconfig.json" },
    { name: "README.md" },
    { name: ".gitignore" },
  ]

  const renderItem = (fileItem: FileTreeItem) => {
    if ("items" in fileItem) {
      return (
        <Collapsible key={fileItem.name}>
          <CollapsibleTrigger
            render={
              <Button
                variant="ghost"
                size="sm"
                className="group w-full justify-start transition-none hover:bg-accent hover:text-accent-foreground"
              />
            }
          >
            <ChevronRightIcon className="transition-transform group-data-[state=open]:rotate-90" />
            <FolderIcon />
            {fileItem.name}
          </CollapsibleTrigger>
          <CollapsibleContent className="mt-1 ml-5 style-lyra:ml-4">
            <div className="flex flex-col gap-1">
              {fileItem.items.map((child) => renderItem(child))}
            </div>
          </CollapsibleContent>
        </Collapsible>
      )
    }
    return (
      <Button
        key={fileItem.name}
        variant="link"
        size="sm"
        className="w-full justify-start gap-2 text-foreground"
      >
        <FileIcon />
        <span>{fileItem.name}</span>
      </Button>
    )
  }

  return (
    <Card className="mx-auto w-full max-w-[16rem] gap-2" size="sm">
      <CardHeader>
        <Tabs defaultValue="explorer">
          <TabsList className="w-full">
            <TabsTrigger value="explorer">Explorer</TabsTrigger>
            <TabsTrigger value="settings">Outline</TabsTrigger>
          </TabsList>
        </Tabs>
      </CardHeader>
      <CardContent>
        <div className="flex flex-col gap-1">
          {fileTree.map((item) => renderItem(item))}
        </div>
      </CardContent>
    </Card>
  )
}