Org Chart

'use client'

import { useMemo, useState } from 'react'
import './org-chart.css'

export interface OrgNode { id: string; name: string; title: string; reports?: OrgNode[] }

export interface OrgChartProps {
  root: OrgNode
  search?: boolean
  onSelect?: (id: string) => void
  fill?: 'dark' | 'light'
  className?: string
}

const size = (n: OrgNode): number => (n.reports ?? []).reduce((a, r) => a + 1 + size(r), 0)
const ini = (s: string) => s.split(' ').map((x) => x[0]).join('').slice(0, 2)

/** Drill-down org chart with path and search. */
export function OrgChart({ root, search = true, onSelect, fill = 'dark', className }: OrgChartProps) {
  const [path, setPath] = useState<OrgNode[]>([root])
  const [hit, setHit] = useState<string | null>(null)
  const [q, setQ] = useState('')
  const all = useMemo(() => { const out: { n: OrgNode; trail: OrgNode[] }[] = []; const walk = (n: OrgNode, t: OrgNode[]) => { out.push({ n, trail: t }); (n.reports ?? []).forEach((r) => walk(r, [...t, n])) }; walk(root, []); return out }, [root])
  const cur = path[path.length - 1]
  const go = (n: OrgNode) => { setHit(null); onSelect?.(n.id); if (n.reports?.length) setPath([...path, n]) ; else setHit(n.id) }
  const find = (s: string) => {
    setQ(s)
    const m = s.trim() && all.find((x) => x.n.name.toLowerCase().includes(s.trim().toLowerCase()))
    if (m) { setPath(m.trail.length ? m.trail : [root]); setHit(m.n.id) } else if (!s.trim()) setHit(null)
  }
  const reports = cur.reports ?? []
  return (
    <div className={['sd-org', className].filter(Boolean).join(' ')} data-fill={fill}>
      {search && <input className="sd-org__q" aria-label="Find a person" placeholder="Find a person" value={q} onChange={(e) => find(e.target.value)} />}
      <nav className="sd-org__crumbs" aria-label="Path">
        {path.map((n, i) => <span key={n.id}>{i > 0 && '› '}<button type="button" aria-current={i === path.length - 1 ? 'true' : undefined} onClick={() => { setPath(path.slice(0, i + 1)); setHit(null) }}>{n.name.split(' ')[0]}</button></span>)}
      </nav>
      <div key={cur.id} className="sd-org__mgr">
        <span className="sd-org__av" aria-hidden>{ini(cur.name)}</span>
        <span className="sd-org__who">{cur.name}<small>{cur.title} · {size(cur)} in org</small></span>
      </div>
      <div className="sd-org__stem" aria-hidden />
      <div className="sd-org__grid" role="list" aria-label={`Reports to ${cur.name}`}>
        {reports.map((r, i) => (
          <button key={r.id} type="button" role="listitem" className="sd-org__p" data-hit={hit === r.id || undefined} style={{ animationDelay: `${i * 40}ms` }}
            aria-label={`${r.name}, ${r.title}${r.reports?.length ? `, ${size(r)} reports. Open` : ''}`} onClick={() => go(r)}>
            <span className="sd-org__av" aria-hidden>{ini(r.name)}</span>
            <span className="sd-org__who">{r.name}<small>{r.title}</small></span>
            {!!r.reports?.length && <span className="sd-org__n" aria-hidden>{size(r)}</span>}
          </button>
        ))}
      </div>
      <p className="sd-org__msg" aria-live="polite">{q.trim() && !hit ? `No one called “${q}”` : hit ? `Found ${all.find((x) => x.n.id === hit)?.n.name}` : `${reports.length} direct reports`}</p>
    </div>
  )
}

.sd-org { --bg: #1c1c1c; --fg: #f6f6f6; --mute: #8e8e8e; --line: rgb(255 255 255 / 0.1); --soft: rgb(255 255 255 / 0.07); --strong: #fafafa; --on: #111; 
  color: var(--fg); font-size: 14px; line-height: 1.4; -webkit-tap-highlight-color: transparent; }
.sd-org[data-fill='light'] { --bg: #fff; --fg: #121212; --mute: #6f6f6f; --line: rgb(0 0 0 / 0.09); --soft: rgb(0 0 0 / 0.05); --strong: #111; --on: #fff; }
.sd-org :where(button) { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
.sd-org :focus-visible { outline: 2px solid var(--fg); outline-offset: 2px; }
.sd-org .sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.sd-org { width: min(100%, 340px); padding: 14px; border-radius: 20px; background: var(--bg); box-shadow: inset 0 0 0 1px var(--line); }
.sd-org__q { width: 100%; height: 36px; margin-bottom: 10px; padding: 0 12px; border: 0; border-radius: 10px; background: var(--soft); color: var(--fg); font: inherit; font-size: 13.5px; outline: 0; }
.sd-org__q:focus { box-shadow: inset 0 0 0 1.5px var(--fg); }
.sd-org__q::placeholder { color: var(--mute); }
.sd-org__crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 2px; margin-bottom: 12px; font-size: 12.5px; color: var(--mute); }
.sd-org__crumbs button { padding: 3px 6px; border-radius: 6px; color: var(--mute) !important; }
.sd-org__crumbs button:hover { background: var(--soft); color: var(--fg) !important; }
.sd-org__crumbs [aria-current] { color: var(--fg) !important; font-weight: 600; }
.sd-org__mgr { display: flex; align-items: center; gap: 10px; padding: 12px; border-radius: 14px; background: var(--strong); color: var(--on); animation: sd-org-in 260ms ease-out; }
.sd-org__mgr .sd-org__av { background: color-mix(in srgb, var(--on) 14%, transparent); }
.sd-org__mgr small { color: color-mix(in srgb, var(--on) 65%, transparent); }
.sd-org__stem { width: 2px; height: 14px; margin: 0 auto; background: var(--line); }
.sd-org__grid { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding-top: 12px; border-top: 2px solid var(--line); }
.sd-org__p { display: flex; align-items: center; gap: 9px; padding: 10px; border-radius: 12px; text-align: left; box-shadow: inset 0 0 0 1px var(--line); animation: sd-org-in 260ms ease-out backwards; transition: background-color 120ms; }
.sd-org__p:hover { background: var(--soft); }
.sd-org__p[data-hit] { box-shadow: inset 0 0 0 2px var(--fg); }
.sd-org__av { display: grid; place-items: center; width: 32px; height: 32px; flex: none; border-radius: 99px; background: var(--soft); font-size: 11.5px; font-weight: 700; }
.sd-org__who { min-width: 0; flex: 1; font-size: 13px; font-weight: 600; line-height: 1.25; }
.sd-org__who small { display: block; font-size: 11.5px; font-weight: 400; color: var(--mute); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sd-org__n { padding: 2px 6px; border-radius: 99px; background: var(--soft); font-size: 11px; font-weight: 700; font-variant-numeric: tabular-nums; }
.sd-org__msg { margin: 10px 2px 0; font-size: 12px; color: var(--mute); }
@keyframes sd-org-in { from { opacity: 0; transform: translateY(6px); } }
@media (prefers-reduced-motion: reduce) { .sd-org *, .sd-org *::before, .sd-org *::after { animation: none !important; transition: none !important; } }