// shell.jsx - app shell: sidebar nav, topbar, route container

const NAV_TREE = [
  { id: "home", label: "Home", icon: "home" },
  { id: "dashboard", label: "Dashboard", icon: "library" },
  { id: "library", label: "Library", icon: "library" },
  { id: "projects", label: "Projects", icon: "folder" },
  {
    id: "ingest", label: "Ingest", icon: "upload", group: true,
    children: [
      { id: "upload", label: "Upload", icon: "upload" },
      { id: "youtube", label: "YouTube", icon: "download" },
      { id: "recorders", label: "Recorders", icon: "record" },
      { id: "schedule", label: "Schedule", icon: "jobs" },
      { id: "capture", label: "Capture", icon: "capture" },
      { id: "monitors", label: "Monitors", icon: "monitor" },
    ],
  },
  { id: "jobs", label: "Jobs", icon: "jobs", badge: { kind: "neutral", text: "3" } },
  { id: "editor", label: "Editor", icon: "editor", badge: { kind: "dev", text: "DEV" } },
];

const ADMIN_TREE = [
  { id: "users", label: "Users", icon: "users" },
  { id: "tokens", label: "Tokens", icon: "token" },
  { id: "containers", label: "Containers", icon: "container" },
  { id: "cluster", label: "Cluster", icon: "cluster" },
  { id: "settings", label: "Settings", icon: "settings" },
];

const NAV_FLAT = (() => {
  const out = [];
  const visit = (arr) => arr.forEach(n => {
    if (n.group && n.children) { visit(n.children); return; }
    out.push({ id: n.id, label: n.label, icon: n.icon });
  });
  visit(NAV_TREE); visit(ADMIN_TREE);
  return out;
})();

function NavItem({ item, active, onSelect, depth = 0, openGroups, toggleGroup }) {
  const isGroup = item.group && item.children;
  const isOpen = isGroup && openGroups.has(item.id);
  const isActive = active === item.id || (isGroup && item.children.some(c => c.id === active));

  return (
    <>
      <div
        className={`nav-item ${isActive && !isGroup ? "active" : ""} ${isGroup ? "has-children" : ""} ${isOpen ? "open" : ""}`}
        onClick={() => {
          if (isGroup) toggleGroup(item.id);
          else onSelect(item.id);
        }}
      >
        <Icon name={item.icon} size={15} className="nav-icon" />
        <span>{item.label}</span>
        {item.badge && (
          <span className={`nav-badge ${item.badge.kind}`}>{item.badge.text}</span>
        )}
        {isGroup && <Icon name="chevron" size={12} className="nav-caret" />}
      </div>
      {isGroup && isOpen && (
        <div className="nav-children">
          {item.children.map(c => (
            <div
              key={c.id}
              className={`nav-item ${active === c.id ? "active" : ""}`}
              onClick={() => onSelect(c.id)}
            >
              <Icon name={c.icon} size={14} className="nav-icon" />
              <span>{c.label}</span>
              {c.badge && <span className={`nav-badge ${c.badge.kind}`}>{c.badge.text}</span>}
            </div>
          ))}
        </div>
      )}
    </>
  );
}

function Sidebar({ active, onNavigate, me }) {
  const [openGroups, setOpenGroups] = React.useState(new Set(["ingest"]));
  const toggleGroup = (id) => {
    setOpenGroups(prev => {
      const next = new Set(prev);
      if (next.has(id)) next.delete(id);
      else next.add(id);
      return next;
    });
  };

  React.useEffect(() => {
    const ingestChildren = ["upload", "youtube", "recorders", "schedule", "capture", "monitors"];
    if (ingestChildren.includes(active)) {
      setOpenGroups(prev => prev.has("ingest") ? prev : new Set([...prev, "ingest"]));
    }
  }, [active]);

  return (
    <aside className="sidebar">
      <div className="sidebar-header" onClick={() => onNavigate('home')} style={{ cursor: 'pointer' }} title="Home">
        <img className="brand-logo" src="img/dragon-logo.png" alt="Dragonflight" draggable="false" />
        <div>
          <div className="brand-name">Dragonflight</div>
        </div>
        <div className="brand-sub">v1.2.0</div>
      </div>
      <div className="sidebar-scroll">
        {NAV_TREE.map(item => (
          <NavItem
            key={item.id}
            item={item}
            active={active}
            onSelect={onNavigate}
            openGroups={openGroups}
            toggleGroup={toggleGroup}
          />
        ))}
        <div className="nav-section-label">Admin</div>
        {ADMIN_TREE.map(item => (
          <NavItem
            key={item.id}
            item={item}
            active={active}
            onSelect={onNavigate}
            openGroups={openGroups}
            toggleGroup={toggleGroup}
          />
        ))}
      </div>
      <div className="sidebar-footer">
        <div className="avatar">{me?.initials || '—'}</div>
        <div className="user-meta">
          <div className="user-name">{me?.name || 'Not signed in'}</div>
          <div className="user-role" title={me?.synthetic ? 'AUTH_ENABLED=false — showing the OS user running the server' : ''}>
            {me?.role || '—'}{me?.synthetic ? ' · auth off' : ''}
          </div>
        </div>
        <button className="icon-btn" data-tip="Sign out" title="Sign out"
          onClick={() => {
            // Best-effort logout — API call may 401 with auth disabled, that's fine.
            window.ZAMPP_API.fetch('/auth/logout', { method: 'POST' })
              .catch(() => {})
              .finally(() => { window.location.reload(); });
          }}>
          <Icon name="power" />
        </button>
      </div>
    </aside>
  );
}

function assetSearchIcon(a) {
  const t = (a.type || a.media_type || '').toLowerCase();
  if (t.includes('audio')) return 'audio';
  if (t.includes('image')) return 'image';
  return 'film';
}

function GlobalSearch({ onNavigate, onOpenAsset, onOpenProject }) {
  const [q, setQ] = React.useState('');
  const [open, setOpen] = React.useState(false);
  const [sel, setSel] = React.useState(0);
  const inputRef = React.useRef(null);
  const listRef = React.useRef(null);
  const isMac = typeof navigator !== 'undefined' && /Mac|iPod|iPhone|iPad/.test(navigator.platform);

  React.useEffect(() => {
    const handler = (e) => {
      const key = e.key && e.key.toLowerCase();
      if ((e.metaKey || e.ctrlKey) && key === 'k') {
        e.preventDefault();
        if (inputRef.current) {
          inputRef.current.focus();
          inputRef.current.select();
          setOpen(true);
        }
      }
    };
    window.addEventListener('keydown', handler);
    return () => window.removeEventListener('keydown', handler);
  }, []);

  const results = React.useMemo(() => {
    const term = q.trim().toLowerCase();
    if (!term) return [];
    const D = window.ZAMPP_DATA || {};
    const out = [];

    (D.ASSETS || []).forEach(a => {
      const hay = ((a.name || '') + ' ' + (a.project || '') + ' ' + (a.filename || '')).toLowerCase();
      if (hay.includes(term)) {
        const sub = [a.project, a.res, a.duration].filter(x => x && x !== '—').join(' · ');
        out.push({ kind: 'asset', icon: assetSearchIcon(a), label: a.name, sub, item: a });
      }
    });
    (D.PROJECTS || []).forEach(p => {
      if ((p.name || '').toLowerCase().includes(term)) {
        out.push({ kind: 'project', icon: 'folder', label: p.name, sub: (p.assets || 0) + ' assets', item: p, color: p.color });
      }
    });
    (D.RECORDERS || []).forEach(r => {
      const hay = ((r.name || '') + ' ' + (r.url || '') + ' ' + (r.source || '')).toLowerCase();
      if (hay.includes(term)) {
        out.push({ kind: 'recorder', icon: 'record', label: r.name || r.url || 'Recorder', sub: [r.status, r.source].filter(Boolean).join(' · '), item: r });
      }
    });
    (D.JOBS || []).forEach(j => {
      const hay = ((j.asset || '') + ' ' + (j.kind || '') + ' ' + (j.status || '')).toLowerCase();
      if (hay.includes(term)) {
        out.push({ kind: 'job', icon: 'jobs', label: j.asset || j.kind || 'Job', sub: [j.kind, j.status].filter(Boolean).join(' · '), item: j });
      }
    });
    (D.USERS || []).forEach(u => {
      const hay = ((u.name || '') + ' ' + (u.email || '') + ' ' + (u.username || '')).toLowerCase();
      if (hay.includes(term)) {
        out.push({ kind: 'user', icon: 'users', label: u.name, sub: u.email || u.role, item: u });
      }
    });
    NAV_FLAT.forEach(n => {
      if (n.label.toLowerCase().includes(term)) {
        out.push({ kind: 'nav', icon: n.icon, label: n.label, sub: 'Go to ' + n.label, target: n.id });
      }
    });

    return out.slice(0, 40);
  }, [q, open]);

  React.useEffect(() => { setSel(0); }, [q]);

  React.useEffect(() => {
    if (!listRef.current) return;
    const el = listRef.current.querySelector('.search-result.active');
    if (el && el.scrollIntoView) el.scrollIntoView({ block: 'nearest' });
  }, [sel]);

  const handleSelect = (r) => {
    if (!r) return;
    setOpen(false);
    setQ('');
    if (inputRef.current) inputRef.current.blur();
    if (r.kind === 'asset' && onOpenAsset) onOpenAsset(r.item);
    else if (r.kind === 'project' && onOpenProject) onOpenProject(r.item);
    else if (r.kind === 'recorder') onNavigate && onNavigate('recorders');
    else if (r.kind === 'job') onNavigate && onNavigate('jobs');
    else if (r.kind === 'user') onNavigate && onNavigate('users');
    else if (r.kind === 'nav') onNavigate && onNavigate(r.target);
  };

  const onKeyDown = (e) => {
    if (e.key === 'Escape') {
      setOpen(false); setQ('');
      if (inputRef.current) inputRef.current.blur();
      return;
    }
    if (!open || results.length === 0) return;
    if (e.key === 'ArrowDown') { e.preventDefault(); setSel(s => Math.min(s + 1, results.length - 1)); }
    else if (e.key === 'ArrowUp') { e.preventDefault(); setSel(s => Math.max(0, s - 1)); }
    else if (e.key === 'Enter') { e.preventDefault(); handleSelect(results[sel]); }
  };

  const showDropdown = open && q.trim().length > 0;

  return (
    <div className="search-wrap">
      <div className={`search ${showDropdown ? 'is-open' : ''}`}>
        <Icon name="search" className="search-icon" />
        <input
          ref={inputRef}
          value={q}
          onChange={e => { setQ(e.target.value); setOpen(true); }}
          onFocus={() => setOpen(true)}
          onBlur={() => setTimeout(() => setOpen(false), 120)}
          onKeyDown={onKeyDown}
          placeholder="Search assets, projects, recorders…"
        />
        <span className="kbd">{isMac ? '⌘K' : 'Ctrl K'}</span>
      </div>
      {showDropdown && (
        <div
          ref={listRef}
          className="search-results"
          onMouseDown={(e) => e.preventDefault()}
        >
          {results.length === 0 ? (
            <div className="search-empty">No results for "{q}"</div>
          ) : results.map((r, i) => (
            <div
              key={r.kind + '-' + i + '-' + (r.item ? (r.item.id || r.item.name) : (r.target || r.label))}
              className={`search-result ${i === sel ? 'active' : ''}`}
              onClick={() => handleSelect(r)}
              onMouseEnter={() => setSel(i)}
            >
              <span
                className="search-result-icon"
                style={r.color ? { color: r.color } : null}
              >
                <Icon name={r.icon} size={14} />
              </span>
              <div className="search-result-text">
                <div className="search-result-label">{r.label}</div>
                {r.sub && <div className="search-result-sub">{r.sub}</div>}
              </div>
              <span className={`search-result-kind kind-${r.kind}`}>{r.kind}</span>
            </div>
          ))}
        </div>
      )}
    </div>
  );
}

function Topbar({ crumbs, onNavigate, right, onOpenAsset, onOpenProject }) {
  // Light cluster ping — the badge in the topbar should reflect reality,
  // not just look reassuring. /metrics/home returns cluster online/total.
  const [clusterHealthy, setClusterHealthy] = React.useState(true);
  React.useEffect(() => {
    let cancelled = false;
    const ping = () => {
      window.ZAMPP_API.fetch('/metrics/home?hours=1')
        .then(d => {
          if (cancelled) return;
          const c = d?.cards?.cluster;
          setClusterHealthy(!c || c.online >= c.total);
        })
        .catch(() => {});
    };
    ping();
    const t = setInterval(ping, 30_000);
    return () => { cancelled = true; clearInterval(t); };
  }, []);

  return (
    <header className="topbar">
      <div className="crumb">
        {crumbs.map((c, i) => (
          <React.Fragment key={i}>
            {i > 0 && <Icon name="chevron" size={12} className="sep" />}
            <span
              className={i === crumbs.length - 1 ? "current" : ""}
              style={{ cursor: c.to && i < crumbs.length - 1 ? "pointer" : "default" }}
              onClick={() => c.to && onNavigate && onNavigate(c.to)}
            >
              {c.label}
            </span>
          </React.Fragment>
        ))}
      </div>
      <div className="spacer" />
      <GlobalSearch onNavigate={onNavigate} onOpenAsset={onOpenAsset} onOpenProject={onOpenProject} />
      <div className="status-pip" title={clusterHealthy ? 'All nodes online' : 'One or more nodes offline'}>
        <span className="dot" style={{ background: clusterHealthy ? 'var(--success)' : 'var(--warning)' }} />
        <span>{clusterHealthy ? 'cluster healthy' : 'cluster degraded'}</span>
      </div>
      {right}
    </header>
  );
}

// General-purpose read-only form field used by recorder modal and other forms.
// Renders as a labeled select (when select=true) or text input.
function Field({ label, value, select, children }) {
  return (
    <div className="field">
      <label className="field-label">{label}</label>
      {children || (select
        ? (
          <select className="field-input" defaultValue={value} style={{ appearance: 'auto' }}>
            <option value={value}>{value}</option>
          </select>
        ) : (
          <input className="field-input" defaultValue={value} readOnly />
        )
      )}
    </div>
  );
}

window.Sidebar = Sidebar;
window.Topbar = Topbar;
window.NAV_TREE = NAV_TREE;
window.NAV_FLAT = NAV_FLAT;
window.Field = Field;
window.GlobalSearch = GlobalSearch;
