// wf-admin.jsx — Screen 4: Admin shell (PUC-8, PUC-9). A/B + states.
const { Screen: AScreen, Wordmark: AWordmark, TopBar: ATopBar, AccountChip: AAccountChip,
  Banner: ABanner, EmptyAdmin: AEmptyAdmin, StateBlock: AStateBlock, WF_T: AT, WF_DS: ADS } = window;
const { Eyebrow: AEyebrow } = ADS;

const STORE = 'Studio Fern';

// storefront identity lockup — the admin's anchor (left of top bar in A)
function StoreId({ size = 17 }) {
  return (
    <span style={{ display: 'inline-flex', alignItems: 'center', gap: 11 }}>
      <img src="assets/mark-tile.svg" width={size + 6} height={size + 6} style={{ borderRadius: 6, display: 'block' }} alt="" />
      <span style={{ display: 'inline-flex', flexDirection: 'column', lineHeight: 1.1 }}>
        <span style={{ fontFamily: AT.disp, fontWeight: 700, fontSize: size, color: AT.star, letterSpacing: '-0.01em' }}>{STORE}</span>
        <span style={{ fontFamily: AT.body, fontSize: 11, color: AT.mute }}>ecomm storefront</span>
      </span>
    </span>
  );
}

// ── Direction A — top bar + centered honest-empty ──────────────────────────
function AdminA({ device = 'desktop' }) {
  const desktop = device === 'desktop';
  return (
    <AScreen>
      <ATopBar pad={desktop ? '0 32px' : '0 18px'} left={<StoreId size={desktop ? 17 : 15} />}
        right={desktop ? <AAccountChip /> : <button style={signOutBtn}>Sign out</button>} />
      <AEmptyAdmin storefront={STORE} compact={!desktop} />
    </AScreen>
  );
}

// ── Direction B — durable app shell (sidebar + content) ────────────────────
function AdminB({ device = 'desktop' }) {
  const desktop = device === 'desktop';
  if (!desktop) {
    return (
      <AScreen>
        <ATopBar pad="0 18px" left={<StoreId size={15} />} right={<button style={signOutBtn}>Sign out</button>} />
        <div style={{ flex: '0 0 auto', padding: '12px 18px', borderBottom: `1px solid ${AT.hair}`, display: 'flex', gap: 8 }}>
          <NavItem active>Home</NavItem>
        </div>
        <AEmptyAdmin storefront={STORE} compact />
      </AScreen>
    );
  }
  return (
    <AScreen style={{ flexDirection: 'row' }}>
      <Sidebar />
      <div style={{ flex: 1, display: 'flex', flexDirection: 'column' }}>
        <header style={{ flex: '0 0 auto', height: 60, padding: '0 36px', display: 'flex', alignItems: 'center', borderBottom: `1px solid ${AT.hair}` }}>
          <span style={{ fontFamily: AT.disp, fontWeight: 500, fontSize: 15, color: AT.soft }}>Home</span>
        </header>
        <div style={{ flex: 1, display: 'flex' }}>
          <AEmptyAdmin storefront={STORE} />
        </div>
      </div>
    </AScreen>
  );
}

function Sidebar() {
  return (
    <aside style={{ flex: '0 0 258px', background: 'var(--wv-night)', borderRight: `1px solid ${AT.hair}`, display: 'flex', flexDirection: 'column', padding: '22px 16px' }}>
      <div style={{ padding: '0 8px 18px' }}><StoreId /></div>
      <div style={{ borderTop: `1px solid ${AT.hair}`, margin: '0 8px 16px' }} />
      <nav style={{ display: 'flex', flexDirection: 'column', gap: 4 }}>
        <NavItem active full>Home</NavItem>
      </nav>
      <div style={{ flex: 1 }} />
      <p style={{ fontFamily: AT.body, fontSize: 11.5, lineHeight: 1.5, color: 'var(--wv-starlight-55)', padding: '0 10px', margin: '0 0 16px' }}>
        Catalog, orders &amp; settings join this rail as ecomm grows. Nothing is shown here before it exists.
      </p>
      <div style={{ borderTop: `1px solid ${AT.hair}`, padding: '14px 10px 2px', display: 'flex', flexDirection: 'column', gap: 8 }}>
        <span style={{ fontFamily: AT.body, fontSize: 13, color: AT.soft }}>mara@studiofern.com</span>
        <button style={{ ...signOutBtn, fontSize: 13, textAlign: 'left' }}>Sign out</button>
      </div>
    </aside>
  );
}

function NavItem({ children, active, full }) {
  return (
    <span style={{
      display: 'inline-flex', alignItems: 'center', gap: 9, padding: full ? '9px 12px' : '7px 13px',
      borderRadius: 9, fontFamily: AT.disp, fontWeight: 500, fontSize: 14,
      color: active ? AT.star : AT.mute,
      background: active ? 'var(--wv-lilac-12)' : 'transparent',
      border: full ? `1px solid ${active ? 'var(--wv-lilac-18)' : 'transparent'}` : 'none',
    }}>
      <span aria-hidden="true" style={{ width: 6, height: 6, borderRadius: 3, background: active ? AT.lilac : 'transparent' }} />
      {children}
    </span>
  );
}

const signOutBtn = { fontFamily: AT.disp, fontWeight: 500, fontSize: 14, color: AT.star, background: 'transparent', border: 'none', cursor: 'pointer', padding: 0 };

// ── States stack ───────────────────────────────────────────────────────────
function AdminStates() {
  return (
    <div style={{ display: 'flex', flexDirection: 'column', gap: 22 }}>
      <AStateBlock label="Loading" note="minimal skeleton while /me resolves">
        <div style={{ display: 'flex', flexDirection: 'column', gap: 12 }}>
          <Skel w={90} h={12} />
          <Skel w={200} h={28} />
          <Skel w={280} h={12} />
          <Skel w={240} h={12} />
        </div>
      </AStateBlock>
      <AStateBlock label="Session expired" note="redirect to sign-in">
        <ABanner tone="info" title="Your session ended">
          For your security you've been signed out. <a href="#" style={{ color: AT.lilac, textDecoration: 'none' }}>Sign in again →</a>
        </ABanner>
      </AStateBlock>
      <AStateBlock label="Sign out" note="account menu open (PUC-9)">
        <div style={{ position: 'relative', height: 96 }}>
          <AAccountChip menu />
        </div>
      </AStateBlock>
    </div>
  );
}
function Skel({ w, h }) {
  return <div style={{ width: w, height: h, borderRadius: 6, background: 'rgba(237,234,255,.08)' }} />;
}

Object.assign(window, { AdminA, AdminB, AdminStates });