"use client"; import type { KeyboardEvent } from "react"; import { useId, useMemo, useState } from "react"; export type PulseCommand = { id: string; label: string; hint?: string; keywords?: string[]; }; type PulseCommandBarProps = { commands?: PulseCommand[]; onSelect?: (command: PulseCommand) => void; placeholder?: string; label?: string; /** Shows the activity pulse. Tie it to real pending work such as a background sync. */ busy?: boolean; busyLabel?: string; /** Forces reduced motion in addition to the OS preference. */ reducedMotion?: boolean; className?: string; }; const defaultCommands: PulseCommand[] = [ { id: "new-invoice", label: "Create invoice", hint: "Billing", keywords: ["bill", "payment"] }, { id: "invite", label: "Invite teammate", hint: "Workspace", keywords: ["member", "user"] }, { id: "deploy", label: "Deploy to staging", hint: "Release", keywords: ["ship", "release"] }, { id: "logs", label: "Open error logs", hint: "Monitoring", keywords: ["errors", "debug"] }, { id: "theme", label: "Switch to dark theme", hint: "Preferences", keywords: ["appearance"] }, ]; export function PulseCommandBar({ commands = defaultCommands, onSelect, placeholder = "Search commands", label = "Command search", busy = false, busyLabel = "Syncing commands", reducedMotion = false, className = "", }: PulseCommandBarProps) { const baseId = useId(); const listId = baseId + "-list"; const [query, setQuery] = useState(""); const [open, setOpen] = useState(false); const [activeIndex, setActiveIndex] = useState(0); const [lastSelected, setLastSelected] = useState(null); const results = useMemo(() => { const needle = query.trim().toLowerCase(); if (!needle) return commands; return commands.filter((command) => [command.label, command.hint ?? "", ...(command.keywords ?? [])].join(" ").toLowerCase().includes(needle), ); }, [commands, query]); const safeIndex = results.length ? Math.min(activeIndex, results.length - 1) : -1; const optionId = (command: PulseCommand) => baseId + "-option-" + command.id; const activeId = open && safeIndex >= 0 ? optionId(results[safeIndex]) : undefined; function select(command: PulseCommand) { onSelect?.(command); setLastSelected(command.label); setQuery(""); setActiveIndex(0); setOpen(false); } function onKeyDown(event: KeyboardEvent) { if (event.key === "ArrowDown" || event.key === "ArrowUp") { event.preventDefault(); const step = event.key === "ArrowDown" ? 1 : -1; if (!open) { setOpen(true); setActiveIndex(step === 1 ? 0 : Math.max(results.length - 1, 0)); } else if (results.length) { setActiveIndex((safeIndex + step + results.length) % results.length); } } else if (event.key === "Enter") { if (open && safeIndex >= 0) { event.preventDefault(); select(results[safeIndex]); } } else if (event.key === "Escape") { if (open) { event.preventDefault(); setOpen(false); } else if (query) { event.preventDefault(); setQuery(""); } } } const status = open ? results.length + (results.length === 1 ? " command" : " commands") + " available" : lastSelected ? lastSelected + " selected" : ""; return (

{busy ? ( ) : ( )} { setQuery(event.target.value); setActiveIndex(0); setOpen(true); }} onFocus={() => setOpen(true)} onBlur={() => setOpen(false)} onKeyDown={onKeyDown} className="min-h-12 min-w-0 flex-1 bg-transparent text-sm text-zinc-900 outline-none placeholder:text-zinc-500 dark:text-zinc-100 dark:placeholder:text-zinc-400" /> Esc

{busy ? {busyLabel} : null}

{status}

); }