Code window

"use client";import * as React from "react";import { Check, Copy } from "lucide-react";import { useCopy } from "@/components/ui/copy-button";import { cn } from "@/lib/utils";// The site's code window: a near-black terminal with three window dots, an optional label chip and actions in its// 44px chrome bar, set in the soft blue ring every card and frame on the site sits in. One accent color for strings and// numbers, comments faded, punctuation half white, the rest soft white: the brand never runs a full syntax theme.const TOKEN = /(\/\/.*$|^\s*#.*$|'[^']*'|"[^"]*"|`[^`]*`|\b\d+(?:\.\d+)?\b|\b(?:true|false|null)\b|[{}()[\],:;=])/;function tokenClass(token: string) {  if (/^(\/\/|\s*#)/.test(token)) return "text-white/35";  if (/^['"`]/.test(token) || /^\d/.test(token) || /^(true|false|null)$/.test(token)) return "text-blue-60";  if (/^[{}()[\],:;=]$/.test(token)) return "text-white/50";  return undefined;}/** Code in the window's mono type (body-sm on a 22px line) with the brand's light highlighting. */function CodeBlock({ code, className }: { code: string; className?: string }) {  return (    <pre data-slot="code-block" className={cn("p-5 font-mono text-body-sm leading-[calc(var(--spacing)*5.5)] text-white/85 [tab-size:4]", className)}>      <code>        {code.split("\n").map((line, i) => (          <span key={i} className="block min-h-[calc(var(--spacing)*5.5)] whitespace-pre">            {line.split(new RegExp(TOKEN, "g")).map((part, j) =>              part ? (                <span key={j} className={tokenClass(part)}>                  {part}                </span>              ) : null,            )}          </span>        ))}      </code>    </pre>  );}// The chrome bar's small square buttons (the agent window's copy, open in): faint white, a soft white wash on hover.const windowButtonClass =  "inline-flex size-7 shrink-0 items-center justify-center rounded-card text-white/45 outline-none transition-[background-color,color] duration-150 ease-out hover:bg-white/10 hover:text-white focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-white/60 motion-reduce:transition-none [&_svg]:size-3.5";// The code tabs' copy button: round, a step larger and brighter.const roundWindowButtonClass =  "flex size-8 shrink-0 items-center justify-center rounded-pill text-white/60 outline-none transition-[background-color,color] duration-150 ease-out hover:bg-white/10 hover:text-white focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-white motion-reduce:transition-none [&_svg]:size-4";/** Copies a value from inside the dark window; the icon turns to a check for a moment. `round` is the code tabs' button. */function WindowCopyButton({ value, label = "Copy code", round = false, className }: { value: string; label?: string; round?: boolean; className?: string }) {  const { hasCopied, copy } = useCopy();  return (    <button type="button" onClick={() => copy(value)} aria-label={hasCopied ? "Copied" : label} className={cn(round ? roundWindowButtonClass : windowButtonClass, className)}>      {hasCopied ? <Check aria-hidden="true" strokeWidth={1.75} /> : <Copy aria-hidden="true" strokeWidth={1.5} />}    </button>  );}type TerminalWindowProps = { label?: React.ReactNode; actions?: React.ReactNode; children: React.ReactNode; className?: string };/** The dark window alone, for places that draw their own ring (or none). */function TerminalWindow({ label, actions, children, className }: TerminalWindowProps) {  return (    <div data-slot="terminal-window" className={cn("min-w-0 overflow-hidden rounded-card bg-code text-left text-white", className)}>      <div className="flex min-h-11 items-center gap-2 border-b border-white/10 px-4 py-2">        <span aria-hidden="true" className="size-3 shrink-0 rounded-pill bg-window-close" />        <span aria-hidden="true" className="size-3 shrink-0 rounded-pill bg-window-minimize" />        <span aria-hidden="true" className="size-3 shrink-0 rounded-pill bg-window-zoom" />        {label && <span className="ml-2 inline-flex min-w-0 items-center gap-1.5 truncate rounded-card bg-white/10 px-2.5 py-1 font-mono text-caption font-medium text-white">{label}</span>}        {actions && <div className="ml-auto flex shrink-0 items-center gap-1">{actions}</div>}      </div>      {children}    </div>  );}/** The dark window in the soft blue ring. The ring's radius repeats the window's, so both corners share one curve. */function CodeWindow({ className, windowClassName, ...props }: TerminalWindowProps & { windowClassName?: string }) {  return (    <div data-slot="code-window" className={cn("min-w-0 rounded-card bg-ring-tint p-2", className)}>      <TerminalWindow className={windowClassName} {...props} />    </div>  );}export type CodeTabSample = {  language: string;  label?: string;  code: string;  filename?: string;  /** The package install command for this language, for an InstallCommand beside the window; null when none is needed. */  install?: string | null;  /** Pre-highlighted markup (from the app's highlighter) shown in place of the built-in highlighting. */  content?: React.ReactNode;};/** * The window with a row of language tabs under the chrome bar: the label shows the file, the round copy button copies * the tab that is showing. The code area holds a fixed 22rem and scrolls inside, so switching never resizes the window; * from lg up it grows to fill its column. Pass `language` and `onLanguageChange` to share one pick across windows (the * site keeps it for every code sample on the page). */function CodeTabs({  samples,  defaultLanguage,  language: languageProp,  onLanguageChange,  className,}: {  samples: CodeTabSample[];  defaultLanguage?: string;  language?: string;  onLanguageChange?: (language: string) => void;  className?: string;}) {  const baseId = React.useId();  const [ownLanguage, setOwnLanguage] = React.useState(defaultLanguage ?? samples[0]?.language);  const language = languageProp ?? ownLanguage;  const active = samples.find((s) => s.language === language) ?? samples[0];  const tabs = React.useRef<Record<string, HTMLButtonElement | null>>({});  if (!active) return null;  const select = (next: string) => {    setOwnLanguage(next);    onLanguageChange?.(next);  };  const onKeyDown = (event: React.KeyboardEvent) => {    const step = event.key === "ArrowRight" ? 1 : event.key === "ArrowLeft" ? -1 : 0;    if (!step) return;    event.preventDefault();    const next = samples[(samples.indexOf(active) + step + samples.length) % samples.length];    select(next.language);    tabs.current[next.language]?.focus();  };  return (    <CodeWindow      className={cn("flex flex-col", className)}      windowClassName="flex flex-1 flex-col"      label={active.filename}      actions={<WindowCopyButton round value={active.code} label={`Copy ${active.label ?? active.language} code`} />}    >      {samples.length > 1 && (        <div role="tablist" aria-label="Code language" onKeyDown={onKeyDown} className="flex min-w-0 gap-1 overflow-x-auto border-b border-white/10 px-3 py-2 [scrollbar-width:none]">          {samples.map((sample) => {            const selected = sample === active;            return (              <button                key={sample.language}                ref={(node) => {                  tabs.current[sample.language] = node;                }}                id={`${baseId}-tab-${sample.language}`}                type="button"                role="tab"                aria-selected={selected}                aria-controls={`${baseId}-panel-${sample.language}`}                tabIndex={selected ? 0 : -1}                onClick={() => select(sample.language)}                className={cn(                  "shrink-0 rounded-pill px-3 py-1.5 text-body-sm leading-snug outline-none transition-colors duration-150 ease-out focus-visible:outline-2 focus-visible:-outline-offset-2 focus-visible:outline-white motion-reduce:transition-none",                  selected ? "bg-white/10 text-white" : "text-white/55 hover:text-white",                )}              >                {sample.label ?? sample.language}              </button>            );          })}        </div>      )}      <div className="relative h-88 lg:h-auto lg:min-h-88 lg:flex-1">        {samples.map((sample) => (          <div            key={sample.language}            id={`${baseId}-panel-${sample.language}`}            role={samples.length > 1 ? "tabpanel" : undefined}            aria-labelledby={samples.length > 1 ? `${baseId}-tab-${sample.language}` : undefined}            tabIndex={0}            hidden={sample !== active}            className="absolute inset-0 overflow-auto outline-none [scrollbar-color:color-mix(in_srgb,var(--ds-color-white)_20%,transparent)_transparent] [scrollbar-width:thin] focus-visible:outline-2 focus-visible:-outline-offset-2 focus-visible:outline-brand [&_pre]:bg-transparent"          >            {sample.content ? <div className="p-5 font-mono text-body-sm leading-[calc(var(--spacing)*5.5)] text-white/85">{sample.content}</div> : <CodeBlock code={sample.code} />}          </div>        ))}      </div>    </CodeWindow>  );}/** * The install command beside a code window, as a hairline pill on white: a faded `$`, the command scrolling inside, * and a round copy button that turns blue on hover. With no command it says the REST API needs none. */function InstallCommand({ command, label = "install command", className }: { command?: string | null; label?: string; className?: string }) {  const { hasCopied, copy } = useCopy();  if (!command) {    return <p className={cn("w-fit max-w-full rounded-pill px-4 py-2 text-body-sm text-fg/65 ring-1 ring-black/10 ring-inset", className)}>No install needed. Call the REST API directly.</p>;  }  return (    <div data-slot="install-command" className={cn("flex w-fit max-w-full items-center gap-2 rounded-pill py-1 pr-1 pl-4 ring-1 ring-black/10 ring-inset", className)}>      <code className="min-w-0 overflow-x-auto font-mono text-body-sm leading-5 whitespace-nowrap text-fg/70 [scrollbar-width:none]">        <span aria-hidden="true" className="text-fg/35">          ${" "}        </span>        {command}      </code>      <button        type="button"        onClick={() => copy(command)}        aria-label={hasCopied ? `${label} copied` : `Copy ${label}`}        className="flex size-8 shrink-0 items-center justify-center rounded-pill text-fg/45 outline-none transition-colors duration-150 ease-out hover:bg-blue-10 hover:text-fg-brand focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-focus-ring motion-reduce:transition-none"      >        {hasCopied ? <Check aria-hidden="true" className="size-4 text-fg-brand" /> : <Copy aria-hidden="true" className="size-4" />}      </button>    </div>  );}export { CodeWindow, TerminalWindow, CodeBlock, CodeTabs, InstallCommand, WindowCopyButton, windowButtonClass };