// screens-admin.jsx — Users, Tokens, Containers, Cluster (graph), Settings

function _normalizeNode(n, x, y) {
  return {
    id: n.id || n.hostname || n.name || 'node',
    role: n.role || 'worker',
    status: n.status || (n.online ? 'online' : 'offline'),
    ip: n.ip || n.ip_address || '—',
    version: n.version || '—',
    uptime: n.uptime || '—',
    cpu: n.cpu || n.cpu_percent || 0,
    mem: n.mem || n.memory_used || n.memory_used_gb || 0,
    memTotal: n.memTotal || n.mem_total || n.memory_total || n.memory_total_gb || 0,
    gpus: n.gpus || (n.gpu_count ? Array(n.gpu_count).fill('GPU') : []),
    devices: n.devices || n.capture_devices || [],
    x, y,
  };
}

function InviteUserModal({ onCreated, onClose }) {
  const [form, setForm] = React.useState({ username: '', display_name: '', password: '', role: 'viewer' });
  const [saving, setSaving] = React.useState(false);
  const [err, setErr] = React.useState(null);

  const submit = () => {
    if (!form.username || !form.password) { setErr('Username and password are required'); return; }
    setSaving(true); setErr(null);
    window.ZAMPP_API.fetch('/users', { method: 'POST', body: JSON.stringify(form) })
      .then(user => { onCreated(user); onClose(); })
      .catch(e => { setSaving(false); setErr(e.message || 'Failed to create user'); });
  };

  const onKey = e => { if (e.key === 'Enter') submit(); };

  return (
    <div className="modal-backdrop" onClick={onClose}>
      <div className="modal" style={{ width: 420 }} onClick={e => e.stopPropagation()}>
        <div className="modal-head">
          <div style={{ fontSize: 15, fontWeight: 600 }}>Invite user</div>
          <button className="icon-btn" onClick={onClose}><Icon name="x" /></button>
        </div>
        <div className="modal-body">
          <div className="field">
            <label className="field-label">Username</label>
            <input className="field-input" value={form.username} autoFocus
              onChange={e => setForm(p => ({...p, username: e.target.value}))}
              onKeyDown={onKey} placeholder="jsmith" />
          </div>
          <div className="field">
            <label className="field-label">Display name</label>
            <input className="field-input" value={form.display_name}
              onChange={e => setForm(p => ({...p, display_name: e.target.value}))}
              onKeyDown={onKey} placeholder="John Smith" />
          </div>
          <div className="field">
            <label className="field-label">Password</label>
            <input className="field-input" type="password" value={form.password}
              onChange={e => setForm(p => ({...p, password: e.target.value}))}
              onKeyDown={onKey} placeholder="Temporary password" />
          </div>
          <div className="field">
            <label className="field-label">Role</label>
            <select className="field-input" value={form.role}
              onChange={e => setForm(p => ({...p, role: e.target.value}))}
              style={{ appearance: 'auto' }}>
              <option value="viewer">Viewer</option>
              <option value="editor">Editor</option>
              <option value="admin">Admin</option>
            </select>
          </div>
          {err && <div style={{ fontSize: 12, color: 'var(--danger)', marginTop: 4 }}>{err}</div>}
        </div>
        <div className="modal-foot">
          <button className="btn ghost sm" onClick={onClose}>Cancel</button>
          <button className="btn primary sm" onClick={submit} disabled={saving}>{saving ? 'Creating…' : 'Create user'}</button>
        </div>
      </div>
    </div>
  );
}

function Users() {
  const [users, setUsers]       = React.useState(window.ZAMPP_DATA.USERS || []);
  const [groups, setGroups]     = React.useState([]);
  const [tab, setTab]           = React.useState("users");
  const [showInvite, setShowInvite] = React.useState(false);
  const [editingUser, setEditingUser] = React.useState(null);
  const [resetUser, setResetUser] = React.useState(null);
  const [menuFor, setMenuFor]   = React.useState(null);   // row id whose menu is open

  const refreshUsers = React.useCallback(() => {
    window.ZAMPP_API.fetch('/users')
      .then(list => {
        const normalized = (list || []).map(u => ({
          ...u,
          name: u.display_name || u.username,
          initials: (u.display_name || u.username || '??').slice(0, 2).toUpperCase(),
          group_count: u.group_count ?? 0,
        }));
        setUsers(normalized);
        window.ZAMPP_DATA.USERS = normalized;
      })
      .catch(() => {});
  }, []);

  const refreshGroups = React.useCallback(() => {
    window.ZAMPP_API.fetch('/groups')
      .then(list => setGroups(list || []))
      .catch(() => setGroups([]));
  }, []);

  React.useEffect(() => { refreshUsers(); refreshGroups(); }, [refreshUsers, refreshGroups]);

  // Click-outside closes any open row menu so the user can dismiss it without picking.
  React.useEffect(() => {
    if (!menuFor) return;
    const close = () => setMenuFor(null);
    window.addEventListener('click', close);
    return () => window.removeEventListener('click', close);
  }, [menuFor]);

  const exportCsv = () => {
    const rows = [['Username', 'Name', 'Role', 'Groups', 'Created']].concat(
      users.map(u => [u.username || '', u.name || '', u.role || '', u.group_count || 0, u.created_at || ''])
    );
    const csv = rows.map(r => r.map(c => '"' + String(c).replace(/"/g, '""') + '"').join(',')).join('\n');
    const a = document.createElement('a');
    a.href = 'data:text/csv;charset=utf-8,' + encodeURIComponent(csv);
    a.download = 'users.csv';
    a.click();
  };

  const onCreated = () => { refreshUsers(); setShowInvite(false); };

  const deleteUser = (u) => {
    setMenuFor(null);
    if (!confirm(`Delete user "${u.name}" (@${u.username})?\nThis cannot be undone.`)) return;
    window.ZAMPP_API.fetch('/users/' + u.id, { method: 'DELETE' })
      .then(refreshUsers)
      .catch(e => alert('Delete failed: ' + e.message));
  };

  const resetPassword = (u) => { setMenuFor(null); setResetUser(u); };

  const changeRole = (u, newRole) => {
    if (u.role === newRole) return;
    window.ZAMPP_API.fetch('/users/' + u.id, { method: 'PATCH', body: JSON.stringify({ role: newRole }) })
      .then(refreshUsers)
      .catch(e => alert('Role change failed: ' + e.message));
  };

  return (
    <div className="page">
      <div className="page-header">
        <h1>Users &amp; Groups</h1>
        <div className="spacer" />
        {tab === 'users' && (<>
          <button className="btn ghost sm" onClick={exportCsv}><Icon name="download" />Export</button>
          <button className="btn primary" onClick={() => setShowInvite(true)}><Icon name="plus" />Invite user</button>
        </>)}
      </div>
      <div className="page-body">
        <div className="tab-group" style={{ width: "fit-content", marginBottom: 12 }}>
          <button className={tab === "users" ? "active" : ""} onClick={() => setTab("users")}>Users · {users.length}</button>
          <button className={tab === "groups" ? "active" : ""} onClick={() => setTab("groups")}>Groups · {groups.length}</button>
          <button className={tab === "policies" ? "active" : ""} onClick={() => setTab("policies")}>Policies</button>
        </div>

        {tab === 'users' && (
          <div className="panel">
            <div className="user-row head">
              <div>User</div>
              <div>Role</div>
              <div>Groups</div>
              <div>Created</div>
              <div></div>
            </div>
            {users.length === 0 && (
              <div style={{ padding: "32px 0", textAlign: "center", color: "var(--text-3)" }}>No users found</div>
            )}
            {users.map(u => (
              <div key={u.id} className="user-row" style={{ position: 'relative' }}>
                <div style={{ display: "flex", alignItems: "center", gap: 10 }}>
                  <div className="avatar" style={{ width: 32, height: 32, fontSize: 11, background: avatarColor(u.initials || u.id) }}>{u.initials || '??'}</div>
                  <div>
                    <div style={{ fontWeight: 500, fontSize: 13 }}>{u.name}</div>
                    <div className="mono" style={{ fontSize: 11, color: "var(--text-3)" }}>@{u.username}</div>
                  </div>
                </div>
                <div>
                  <select value={u.role || 'viewer'}
                          onChange={e => changeRole(u, e.target.value)}
                          className="field-input"
                          style={{ width: 90, padding: '3px 6px', fontSize: 11.5, appearance: 'auto' }}>
                    <option value="admin">admin</option>
                    <option value="editor">editor</option>
                    <option value="viewer">viewer</option>
                  </select>
                </div>
                <div className="mono" style={{ fontSize: 11.5, color: "var(--text-3)" }}>
                  {u.group_count || 0} {u.group_count === 1 ? 'group' : 'groups'}
                </div>
                <div className="mono" style={{ fontSize: 11.5, color: "var(--text-3)" }}>
                  {u.created_at ? new Date(u.created_at).toLocaleDateString() : u.lastSeen || '—'}
                </div>
                <div style={{ position: 'relative' }}>
                  <button className="icon-btn" onClick={e => { e.stopPropagation(); setMenuFor(menuFor === u.id ? null : u.id); }}>
                    <Icon name="more" />
                  </button>
                  {menuFor === u.id && (
                    <div className="row-menu" onClick={e => e.stopPropagation()}>
                      <button onClick={() => { setMenuFor(null); setEditingUser(u); }}>
                        <Icon name="edit" size={12} />Rename
                      </button>
                      <button onClick={() => resetPassword(u)}>
                        <Icon name="key" size={12} />Reset password
                      </button>
                      <button className="danger" onClick={() => deleteUser(u)}>
                        <Icon name="trash" size={12} />Delete
                      </button>
                    </div>
                  )}
                </div>
              </div>
            ))}
          </div>
        )}

        {tab === 'groups' && <GroupsPanel groups={groups} users={users} onChange={refreshGroups} />}

        {tab === 'policies' && (
          <div className="panel" style={{ padding: '48px 24px', textAlign: 'center', color: 'var(--text-3)' }}>
            <Icon name="lock" size={24} />
            <div style={{ marginTop: 10, fontWeight: 500, fontSize: 14, color: 'var(--text-2)' }}>Access policies</div>
            <div style={{ fontSize: 12, marginTop: 4 }}>
              Per-project and per-bin permissions are coming soon. For now, role-based access<br />
              (admin / editor / viewer) is enforced API-wide.
            </div>
          </div>
        )}
      </div>
      {showInvite && <InviteUserModal onCreated={onCreated} onClose={() => setShowInvite(false)} />}
      {editingUser && (
        <EditUserModal user={editingUser}
          onClose={() => setEditingUser(null)}
          onSaved={() => { setEditingUser(null); refreshUsers(); }}
        />
      )}
      {resetUser && (
        <PasswordResetModal user={resetUser}
          onClose={() => setResetUser(null)}
          onSaved={() => setResetUser(null)}
        />
      )}
    </div>
  );
}

function EditUserModal({ user, onClose, onSaved }) {
  const [name, setName] = React.useState(user.display_name || user.name || '');
  const [saving, setSaving] = React.useState(false);
  const [err, setErr] = React.useState(null);
  const submit = () => {
    setSaving(true); setErr(null);
    window.ZAMPP_API.fetch('/users/' + user.id, { method: 'PATCH', body: JSON.stringify({ display_name: name.trim() }) })
      .then(onSaved)
      .catch(e => { setSaving(false); setErr(e.message); });
  };
  return (
    <div className="modal-backdrop" onClick={onClose}>
      <div className="modal" style={{ width: 400 }} onClick={e => e.stopPropagation()}>
        <div className="modal-head">
          <div style={{ fontSize: 15, fontWeight: 600 }}>Rename user</div>
          <button className="icon-btn" onClick={onClose}><Icon name="x" /></button>
        </div>
        <div className="modal-body">
          <div className="field">
            <label className="field-label">Display name</label>
            <input className="field-input" autoFocus value={name}
                   onChange={e => setName(e.target.value)}
                   onKeyDown={e => { if (e.key === 'Enter') submit(); }} />
            <div className="mono" style={{ fontSize: 11, color: 'var(--text-3)', marginTop: 4 }}>username @{user.username} cannot be changed</div>
          </div>
          {err && <div style={{ fontSize: 12, color: 'var(--danger)', marginTop: 4 }}>{err}</div>}
        </div>
        <div className="modal-foot">
          <button className="btn ghost sm" onClick={onClose}>Cancel</button>
          <button className="btn primary sm" onClick={submit} disabled={saving || !name.trim()}>{saving ? 'Saving…' : 'Save'}</button>
        </div>
      </div>
    </div>
  );
}

function PasswordResetModal({ user, onClose, onSaved }) {
  const [pw, setPw]       = React.useState('');
  const [pw2, setPw2]     = React.useState('');
  const [show, setShow]   = React.useState(false);
  const [saving, setSaving] = React.useState(false);
  const [err, setErr]     = React.useState(null);
  const [done, setDone]   = React.useState(false);

  const valid = pw.length >= 8 && pw === pw2;
  const submit = () => {
    if (!valid) return;
    setSaving(true); setErr(null);
    window.ZAMPP_API.fetch('/users/' + user.id, { method: 'PATCH', body: JSON.stringify({ password: pw }) })
      .then(() => { setSaving(false); setDone(true); setTimeout(onSaved, 1200); })
      .catch(e => { setSaving(false); setErr(e.message); });
  };

  return (
    <div className="modal-backdrop" onClick={onClose}>
      <div className="modal" style={{ width: 400 }} onClick={e => e.stopPropagation()}>
        <div className="modal-head">
          <div style={{ fontSize: 15, fontWeight: 600 }}>Reset password · @{user.username}</div>
          <button className="icon-btn" onClick={onClose}><Icon name="x" /></button>
        </div>
        <div className="modal-body">
          {done ? (
            <div style={{ textAlign: 'center', padding: '12px 0', color: 'var(--success)', fontSize: 13 }}>
              <Icon name="check" size={16} /> Password updated.
            </div>
          ) : (<>
            <div className="field">
              <label className="field-label">New password</label>
              <div style={{ position: 'relative' }}>
                <input className="field-input" autoFocus type={show ? 'text' : 'password'}
                       value={pw} onChange={e => setPw(e.target.value)}
                       onKeyDown={e => { if (e.key === 'Enter' && valid) submit(); }}
                       style={{ paddingRight: 36 }} />
                <button className="icon-btn" style={{ position: 'absolute', right: 4, top: '50%', transform: 'translateY(-50%)' }}
                        onClick={() => setShow(s => !s)} type="button" tabIndex={-1}>
                  <Icon name={show ? 'eye-off' : 'eye'} size={13} />
                </button>
              </div>
              <div style={{ fontSize: 11, color: pw.length > 0 && pw.length < 8 ? 'var(--danger)' : 'var(--text-3)', marginTop: 4 }}>
                Minimum 8 characters
              </div>
            </div>
            <div className="field">
              <label className="field-label">Confirm password</label>
              <input className="field-input" type={show ? 'text' : 'password'}
                     value={pw2} onChange={e => setPw2(e.target.value)}
                     onKeyDown={e => { if (e.key === 'Enter' && valid) submit(); }} />
              {pw2.length > 0 && pw !== pw2 && (
                <div style={{ fontSize: 11, color: 'var(--danger)', marginTop: 4 }}>Passwords do not match</div>
              )}
            </div>
            {err && <div style={{ fontSize: 12, color: 'var(--danger)', marginTop: 4 }}>{err}</div>}
          </>)}
        </div>
        {!done && (
          <div className="modal-foot">
            <button className="btn ghost sm" onClick={onClose}>Cancel</button>
            <button className="btn primary sm" onClick={submit} disabled={saving || !valid}>
              {saving ? 'Saving…' : 'Reset password'}
            </button>
          </div>
        )}
      </div>
    </div>
  );
}

function GroupsPanel({ groups, users, onChange }) {
  const [creating, setCreating] = React.useState(false);
  const [newName, setNewName]   = React.useState('');
  const [newDesc, setNewDesc]   = React.useState('');
  const [expandedId, setExpandedId] = React.useState(null);
  const [members, setMembers]   = React.useState({});  // groupId -> [user]

  const createGroup = () => {
    if (!newName.trim()) return;
    window.ZAMPP_API.fetch('/groups', { method: 'POST', body: JSON.stringify({ name: newName.trim(), description: newDesc.trim() || null }) })
      .then(() => { setCreating(false); setNewName(''); setNewDesc(''); onChange(); })
      .catch(e => alert('Create failed: ' + e.message));
  };

  const deleteGroup = (g) => {
    if (!confirm(`Delete group "${g.name}"?`)) return;
    window.ZAMPP_API.fetch('/groups/' + g.id, { method: 'DELETE' })
      .then(onChange)
      .catch(e => alert('Delete failed: ' + e.message));
  };

  const toggle = (g) => {
    if (expandedId === g.id) { setExpandedId(null); return; }
    setExpandedId(g.id);
    window.ZAMPP_API.fetch('/groups/' + g.id + '/members')
      .then(list => setMembers(m => ({ ...m, [g.id]: list || [] })))
      .catch(() => setMembers(m => ({ ...m, [g.id]: [] })));
  };

  const addMember = (g, userId) => {
    if (!userId) return;
    window.ZAMPP_API.fetch('/groups/' + g.id + '/members', { method: 'POST', body: JSON.stringify({ user_id: userId }) })
      .then(() => {
        window.ZAMPP_API.fetch('/groups/' + g.id + '/members')
          .then(list => setMembers(m => ({ ...m, [g.id]: list || [] })));
        onChange();
      })
      .catch(e => alert('Add failed: ' + e.message));
  };
  const removeMember = (g, uid) => {
    window.ZAMPP_API.fetch('/groups/' + g.id + '/members/' + uid, { method: 'DELETE' })
      .then(() => {
        setMembers(m => ({ ...m, [g.id]: (m[g.id] || []).filter(u => u.id !== uid) }));
        onChange();
      })
      .catch(e => alert('Remove failed: ' + e.message));
  };

  return (
    <div>
      <div style={{ display: 'flex', alignItems: 'center', marginBottom: 12 }}>
        <div style={{ flex: 1, fontSize: 12, color: 'var(--text-3)' }}>
          Groups let you bundle users for project access. Memberships are checked when role-based access is enforced.
        </div>
        <button className="btn primary sm" onClick={() => setCreating(true)}><Icon name="plus" size={11} />New group</button>
      </div>

      {creating && (
        <div className="panel" style={{ padding: 12, marginBottom: 12, display: 'grid', gridTemplateColumns: '1fr 2fr auto auto', gap: 8, alignItems: 'end' }}>
          <div className="field" style={{ marginBottom: 0 }}>
            <label className="field-label">Group name</label>
            <input className="field-input" autoFocus value={newName} onChange={e => setNewName(e.target.value)}
                   onKeyDown={e => { if (e.key === 'Enter') createGroup(); }} placeholder="broadcasters" />
          </div>
          <div className="field" style={{ marginBottom: 0 }}>
            <label className="field-label">Description (optional)</label>
            <input className="field-input" value={newDesc} onChange={e => setNewDesc(e.target.value)}
                   onKeyDown={e => { if (e.key === 'Enter') createGroup(); }} placeholder="On-air operators" />
          </div>
          <button className="btn primary sm" onClick={createGroup} disabled={!newName.trim()}>Create</button>
          <button className="btn ghost sm" onClick={() => { setCreating(false); setNewName(''); setNewDesc(''); }}>Cancel</button>
        </div>
      )}

      <div className="panel">
        {groups.length === 0 && !creating && (
          <div style={{ padding: '32px 0', textAlign: 'center', color: 'var(--text-3)', fontSize: 12.5 }}>
            No groups yet — click <em>New group</em> above to create one.
          </div>
        )}
        {groups.map(g => {
          const isOpen = expandedId === g.id;
          const groupMembers = members[g.id] || [];
          const nonMembers = users.filter(u => !groupMembers.some(m => m.id === u.id));
          return (
            <div key={g.id} style={{ borderBottom: '1px solid var(--border)' }}>
              <div style={{ padding: '12px 16px', display: 'grid', gridTemplateColumns: '1.6fr 2fr 90px 80px', alignItems: 'center', gap: 12 }}>
                <div>
                  <div style={{ fontWeight: 500, fontSize: 13 }}>{g.name}</div>
                  <div className="mono" style={{ fontSize: 11, color: 'var(--text-3)' }}>{g.id.slice(0, 8)}</div>
                </div>
                <div style={{ fontSize: 12, color: 'var(--text-3)' }}>{g.description || <span style={{ fontStyle: 'italic' }}>no description</span>}</div>
                <div className="mono" style={{ fontSize: 11.5, color: 'var(--text-3)' }}>{g.member_count || 0} member{g.member_count === 1 ? '' : 's'}</div>
                <div style={{ display: 'flex', gap: 4, justifyContent: 'flex-end' }}>
                  <button className="btn ghost sm" onClick={() => toggle(g)}>{isOpen ? 'Hide' : 'Members'}</button>
                  <button className="btn ghost sm danger" onClick={() => deleteGroup(g)}>Delete</button>
                </div>
              </div>
              {isOpen && (
                <div style={{ padding: '0 16px 16px 16px', background: 'var(--bg-2)' }}>
                  <div style={{ display: 'flex', gap: 6, flexWrap: 'wrap', marginBottom: 10 }}>
                    {groupMembers.length === 0 && <span style={{ fontSize: 12, color: 'var(--text-3)' }}>No members yet.</span>}
                    {groupMembers.map(m => (
                      <span key={m.id} className="badge outline" style={{ display: 'inline-flex', alignItems: 'center', gap: 6, padding: '4px 8px' }}>
                        @{m.username}
                        <button className="icon-btn" style={{ width: 16, height: 16, padding: 0 }} onClick={() => removeMember(g, m.id)} title="Remove">
                          <Icon name="x" size={9} />
                        </button>
                      </span>
                    ))}
                  </div>
                  {nonMembers.length > 0 && (
                    <div style={{ display: 'flex', gap: 8, alignItems: 'center' }}>
                      <span style={{ fontSize: 11.5, color: 'var(--text-3)' }}>Add member:</span>
                      <select className="field-input" defaultValue=""
                              onChange={e => { addMember(g, e.target.value); e.target.value = ''; }}
                              style={{ width: 200, padding: '4px 8px', fontSize: 12, appearance: 'auto' }}>
                        <option value="" disabled>— Pick a user —</option>
                        {nonMembers.map(u => <option key={u.id} value={u.id}>@{u.username} — {u.name}</option>)}
                      </select>
                    </div>
                  )}
                </div>
              )}
            </div>
          );
        })}
      </div>
    </div>
  );
}

function Tokens() {
  const [burned, setBurned] = React.useState(14340);
  const [rate, setRate] = React.useState(2.4);
  const [showCalc, setShowCalc] = React.useState(false);

  React.useEffect(() => {
    const i = setInterval(() => {
      setBurned(b => b + Math.floor(Math.random() * 8) + 1);
      setRate(r => Math.max(0.8, Math.min(8, r + (Math.random() - 0.5) * 0.4)));
    }, 800);
    return () => clearInterval(i);
  }, []);

  const burnSpark = React.useMemo(() => Array.from({ length: 40 }, (_, i) => 100 + i * 8 + Math.sin(i * 0.7) * 12), []);
  const competitorSpark = React.useMemo(() => Array.from({ length: 40 }, (_, i) => 200 + i * 22 + Math.cos(i * 0.5) * 30), []);
  const yourCostSpark = React.useMemo(() => Array.from({ length: 40 }, () => 1), []);

  const [events, setEvents] = React.useState([
    { t: "21:14:02", action: "preview thumbnail generated", cost: 4 },
    { t: "21:14:01", action: "user clicked play", cost: 12 },
    { t: "21:13:58", action: "API health check", cost: 8 },
    { t: "21:13:54", action: "asset metadata read", cost: 2 },
    { t: "21:13:51", action: "session token refreshed", cost: 18 },
    { t: "21:13:47", action: "scrubbed timeline 1 frame", cost: 6 },
    { t: "21:13:42", action: "took a deep breath near the API", cost: 24 },
  ]);

  React.useEffect(() => {
    const actions = [
      "preview thumbnail generated", "user clicked play", "API health check",
      "scrubbed timeline 1 frame", "asset metadata read", "session token refreshed",
      "checked job queue", "rendered a tooltip", "loaded sidebar icon",
      "blinked", "made eye contact with the cluster", "opened a modal (twice)",
      "asset list pagination request", "thought about a comment", "moved cursor near 'Save'",
    ];
    const i = setInterval(() => {
      const now = new Date();
      const t = `${String(now.getHours()).padStart(2, "0")}:${String(now.getMinutes()).padStart(2, "0")}:${String(now.getSeconds()).padStart(2, "0")}`;
      const a = actions[Math.floor(Math.random() * actions.length)];
      const c = Math.floor(Math.random() * 28) + 1;
      setEvents(ev => [{ t, action: a, cost: c }, ...ev].slice(0, 12));
    }, 1600);
    return () => clearInterval(i);
  }, []);

  const tiers = [
    { name: "Starter", desc: "For \"evaluation only\" — definitely not production", price: "$2,400", per: "/ month", tokens: "100k tokens", popular: false, color: "#6B7280" },
    { name: "Broadcast", desc: "Most teams. Most pain.", price: "$28,000", per: "/ month", tokens: "1.5M tokens", popular: true, color: "#5B7CFA" },
    { name: "Enterprise", desc: "If you have to ask, you can't afford it (but you'll ask anyway)", price: "$call us", per: "and bring lawyers", tokens: "∞ tokens", popular: false, color: "#B57CFA" },
  ];

  return (
    <div className="page">
      <div className="page-header">
        <h1>Tokens</h1>
        <span className="subtitle">Token-metered pricing parody · You actually pay <strong style={{ color: "var(--success)" }}>$0.00</strong></span>
        <div className="spacer" />
        <span className="badge warning"><Icon name="alert" size={10} /> SATIRE</span>
        <button className="btn ghost sm" onClick={() => setShowCalc(!showCalc)}><Icon name="sliders" />Cost calculator</button>
      </div>
      <div className="page-body">

        <div style={{ textAlign: 'center', padding: '8px 0 36px' }}>
          <h2 style={{ fontSize: 30, fontWeight: 700, letterSpacing: '-0.02em', lineHeight: 1.3, margin: 0 }}>
            <span style={{ textDecoration: 'line-through', color: 'var(--text-3)', fontWeight: 500 }}>Per-seat</span>
            {' · '}
            <span style={{ textDecoration: 'line-through', color: 'var(--text-3)', fontWeight: 500 }}>Per-stream</span>
            {' · '}
            <span style={{ textDecoration: 'line-through', color: 'var(--text-3)', fontWeight: 500 }}>Per-month</span>
            <br />
            <span style={{ fontSize: 52, fontWeight: 800, color: 'var(--accent-text)', letterSpacing: '-0.03em' }}>Per Token.</span>
          </h2>
        </div>

        <div className="token-hero">
          <div className="token-burn-card">
            <div className="token-card-label">TOKENS BURNED THIS SESSION</div>
            <div className="token-counter">
              <span className="token-flame">🔥</span>
              <span className="token-big mono">{burned.toLocaleString()}</span>
            </div>
            <div className="token-rate">
              <span className="mono" style={{ color: "var(--danger)" }}>↑ {rate.toFixed(1)}k/sec</span>
              <span style={{ color: "var(--text-3)", marginLeft: 10 }}>burning since you logged in</span>
            </div>
            <div style={{ marginTop: 12 }}>
              <Sparkline data={burnSpark} color="#FF5B5B" />
            </div>
          </div>

          <div className="token-actual-card">
            <div className="token-card-label">WHAT YOU ACTUALLY PAY</div>
            <div className="token-actual-amount">
              <span style={{ fontSize: 48, fontWeight: 700, letterSpacing: "-0.04em" }}>$0</span>
              <span style={{ fontSize: 18, color: "var(--text-3)" }}>.00</span>
            </div>
            <div style={{ fontSize: 12, color: "var(--text-3)", lineHeight: 1.5 }}>
              Dragonflight is self-hosted. The tokens above are imaginary.<br />
              Imagine them as a stress test for your sanity.
            </div>
            <div style={{ marginTop: 12 }}>
              <Sparkline data={yourCostSpark} color="#2DD4A8" fill={false} />
            </div>
          </div>
        </div>

        <div className="token-comparison">
          <div className="token-card-label" style={{ padding: "16px 16px 0" }}>HOURLY BURN — DRAGONFLIGHT vs. THE OTHER GUYS</div>
          <div className="token-compare-chart">
            <ChartLine
              series={[
                { label: "AMPP-style competitor", data: competitorSpark, color: "#FF5B5B" },
                { label: "Dragonflight (yours)", data: yourCostSpark.map((_, i) => i < 20 ? 1 : 1), color: "#2DD4A8" },
              ]}
            />
            <div className="token-compare-legend">
              <div><span className="dot" style={{ background: "#FF5B5B" }} />Competitor: $1,247/hr and rising</div>
              <div><span className="dot" style={{ background: "#2DD4A8" }} />Dragonflight: $0.00/hr forever</div>
            </div>
          </div>
        </div>

        <div className="token-grid">
          <div>
            <div className="token-card-label" style={{ marginBottom: 8 }}>LIVE BILLING EVENTS</div>
            <div className="panel">
              {events.map((e, i) => (
                <div key={i} className={`token-event ${i === 0 ? "fresh" : ""}`}>
                  <span className="mono" style={{ color: "var(--text-3)", fontSize: 11 }}>{e.t}</span>
                  <span style={{ flex: 1, fontSize: 12.5 }}>{e.action}</span>
                  <span className="mono" style={{ color: "var(--danger)", fontWeight: 600 }}>+{e.cost} tk</span>
                </div>
              ))}
            </div>
          </div>

          <div>
            <div className="token-card-label" style={{ marginBottom: 8 }}>PRICING TIERS WE DIDN'T COPY</div>
            <div className="token-tiers">
              {tiers.map(t => (
                <div key={t.name} className={`token-tier ${t.popular ? "popular" : ""}`}>
                  {t.popular && <span className="token-tier-badge">MOST PAIN</span>}
                  <div className="token-tier-name" style={{ color: t.color }}>{t.name}</div>
                  <div className="token-tier-desc">{t.desc}</div>
                  <div className="token-tier-price">
                    <span style={{ fontSize: 26, fontWeight: 700, letterSpacing: "-0.02em" }}>{t.price}</span>
                    <span style={{ fontSize: 12, color: "var(--text-3)", marginLeft: 4 }}>{t.per}</span>
                  </div>
                  <div className="token-tier-tokens mono">{t.tokens}</div>
                  <button className="btn subtle sm" disabled style={{ width: "100%", marginTop: 8 }}>Not for sale</button>
                </div>
              ))}
            </div>
          </div>
        </div>

        {showCalc && <CostCalculator onClose={() => setShowCalc(false)} />}

        <div className="token-footnote">
          <Icon name="alert" size={14} />
          <div>
            <strong>Disclaimer:</strong> No actual tokens were billed in the making of this page. Wild Dragon's broadcast platform
            is self-hosted infrastructure. Any resemblance to per-API-call broadcast token economies, living or dead, is satirical
            and protected as commentary. If you came here looking for actual API tokens, that page no longer exists — service
            credentials are managed through the cluster's own JWT issuer.
          </div>
        </div>
      </div>
    </div>
  );
}

function ChartLine({ series }) {
  const w = 600, h = 140;
  return (
    <svg viewBox={`0 0 ${w} ${h}`} preserveAspectRatio="none" style={{ width: "100%", height: 140 }}>
      <defs>
        <pattern id="cgrid" width="60" height="28" patternUnits="userSpaceOnUse">
          <path d="M 60 0 L 0 0 0 28" fill="none" stroke="rgba(255,255,255,0.04)" strokeWidth="1" />
        </pattern>
      </defs>
      <rect width={w} height={h} fill="url(#cgrid)" />
      {series.map((s, si) => {
        const max = Math.max(...series.flatMap(x => x.data), 1);
        const pts = s.data.map((d, i) => {
          const x = (i / (s.data.length - 1)) * w;
          const y = h - (d / max) * (h - 10) - 4;
          return `${x},${y}`;
        }).join(" ");
        const area = `0,${h} ${pts} ${w},${h}`;
        return (
          <g key={si}>
            <polygon points={area} fill={s.color} opacity="0.1" />
            <polyline points={pts} fill="none" stroke={s.color} strokeWidth="2" />
            <circle cx={w} cy={h - (s.data[s.data.length - 1] / max) * (h - 10) - 4} r="4" fill={s.color} />
            <circle cx={w} cy={h - (s.data[s.data.length - 1] / max) * (h - 10) - 4} r="8" fill={s.color} opacity="0.3">
              <animate attributeName="r" values="4;14;4" dur="2s" repeatCount="indefinite" />
              <animate attributeName="opacity" values="0.6;0;0.6" dur="2s" repeatCount="indefinite" />
            </circle>
          </g>
        );
      })}
    </svg>
  );
}

function CostCalculator({ onClose }) {
  const [users, setUsers] = React.useState(12);
  const [assets, setAssets] = React.useState(500);
  const [clicks, setClicks] = React.useState(2000);
  const cost = users * 240 + assets * 8 + clicks * 0.12;
  return (
    <div className="modal-backdrop" onClick={onClose}>
      <div className="modal" style={{ width: 520 }} onClick={e => e.stopPropagation()}>
        <div className="modal-head">
          <div>
            <div style={{ fontSize: 15, fontWeight: 600 }}>Token Cost Calculator</div>
            <div style={{ fontSize: 12, color: "var(--text-3)", marginTop: 2 }}>What it would cost on AMPP-style pricing</div>
          </div>
          <button className="icon-btn" onClick={onClose}><Icon name="x" /></button>
        </div>
        <div className="modal-body">
          <CalcSlider label="Users" value={users} onChange={setUsers} min={1} max={100} unit=" people" />
          <CalcSlider label="Assets in library" value={assets} onChange={setAssets} min={50} max={10000} step={50} unit="" />
          <CalcSlider label="UI clicks per day" value={clicks} onChange={setClicks} min={100} max={20000} step={100} unit="" />
          <div style={{ background: "var(--bg-2)", border: "1px solid var(--border)", borderRadius: 8, padding: 16, marginTop: 8 }}>
            <div style={{ fontSize: 11, color: "var(--text-3)", textTransform: "uppercase", letterSpacing: "0.06em", fontWeight: 600 }}>You would be paying</div>
            <div style={{ fontSize: 36, fontWeight: 700, color: "var(--danger)", letterSpacing: "-0.02em", marginTop: 4 }}>
              ${cost.toLocaleString("en-US", { maximumFractionDigits: 0 })}<span style={{ fontSize: 14, color: "var(--text-3)", fontWeight: 400, marginLeft: 4 }}>/ month</span>
            </div>
            <div style={{ marginTop: 8, padding: 10, background: "var(--success-soft)", borderRadius: 6, fontSize: 12.5, color: "var(--success)" }}>
              <strong>Your actual Dragonflight cost:</strong> $0.00. You're welcome.
            </div>
          </div>
        </div>
      </div>
    </div>
  );
}

function CalcSlider({ label, value, onChange, min, max, step = 1, unit }) {
  return (
    <div>
      <div style={{ display: "flex", justifyContent: "space-between", marginBottom: 6, fontSize: 12 }}>
        <span style={{ color: "var(--text-2)" }}>{label}</span>
        <span className="mono" style={{ color: "var(--text-1)", fontWeight: 600 }}>{value.toLocaleString()}{unit}</span>
      </div>
      <input
        type="range"
        min={min} max={max} step={step}
        value={value}
        onChange={e => onChange(Number(e.target.value))}
        style={{ width: "100%", accentColor: "var(--accent)" }}
      />
    </div>
  );
}

function Containers() {
  const [containers, setContainers] = React.useState(null);

  function load() {
    setContainers(null);
    window.ZAMPP_API.fetch('/cluster/containers')
      .then(data => setContainers(Array.isArray(data) ? data : (data.containers || [])))
      .catch(() => setContainers([]));
  }

  React.useEffect(() => { load(); }, []);

  const running = (containers || []).filter(c => c.state === 'running').length;

  const [restartFlash, setRestartFlash] = React.useState(null);
  const [logsModal, setLogsModal] = React.useState(null);

  const showLogs = (c) => setLogsModal(c);

  const restartContainer = (c) => {
    if (!window.confirm('Restart container "' + c.name + '"?\nIn-flight requests will be dropped.')) return;
    setRestartFlash({ name: c.name, status: 'pending' });
    window.ZAMPP_API.fetch('/cluster/containers/' + encodeURIComponent(c.id || c.name) + '/restart', { method: 'POST' })
      .then(() => { setRestartFlash({ name: c.name, status: 'ok' }); load(); setTimeout(() => setRestartFlash(null), 3000); })
      .catch(e => { setRestartFlash({ name: c.name, status: 'fail', error: e.message }); setTimeout(() => setRestartFlash(null), 5000); });
  };

  return (
    <div className="page">
      <div className="page-header">
        <h1>Containers</h1>
        <span className="subtitle">Docker Compose services across the cluster</span>
        <div className="spacer" />
        {containers !== null && containers.length > 0 && (
          <div className="status-pip">
            <span className="dot" />
            <span>{running} / {containers.length} running</span>
          </div>
        )}
        <button className="btn ghost sm" onClick={load}><Icon name="refresh" />Refresh</button>
      </div>
      {restartFlash && (
        <div style={{
          position: 'fixed', bottom: 20, right: 20, zIndex: 200,
          background: restartFlash.status === 'ok' ? 'var(--success-soft)'
                    : restartFlash.status === 'fail' ? 'var(--danger-soft)'
                    : 'var(--bg-2)',
          color: restartFlash.status === 'ok' ? 'var(--success)'
               : restartFlash.status === 'fail' ? 'var(--danger)' : 'var(--text-2)',
          border: '1px solid', borderColor: restartFlash.status === 'ok' ? 'var(--success)'
                                          : restartFlash.status === 'fail' ? 'var(--danger)' : 'var(--border)',
          borderRadius: 6, padding: '10px 14px', fontSize: 12.5, maxWidth: 320,
        }}>
          {restartFlash.status === 'pending' && `Restarting ${restartFlash.name}…`}
          {restartFlash.status === 'ok' && `${restartFlash.name} restarted.`}
          {restartFlash.status === 'fail' && `${restartFlash.name}: ${restartFlash.error}`}
        </div>
      )}
      {logsModal && (
        <div className="modal-backdrop" onClick={() => setLogsModal(null)}>
          <div className="modal" style={{ width: 540 }} onClick={e => e.stopPropagation()}>
            <div className="modal-head">
              <div style={{ fontSize: 15, fontWeight: 600 }}>Logs · {logsModal.name}</div>
              <button className="icon-btn" onClick={() => setLogsModal(null)}><Icon name="x" /></button>
            </div>
            <div className="modal-body">
              <div style={{ fontSize: 12, color: 'var(--text-3)', marginBottom: 8 }}>
                Live log streaming over the websocket isn't wired yet. SSH to the host that runs this container and tail the logs directly:
              </div>
              <code className="mono" style={{ display: 'block', background: 'var(--bg-2)', padding: 10, borderRadius: 5, fontSize: 11.5, overflowX: 'auto' }}>
                docker compose logs -f {logsModal.name}
              </code>
              <div style={{ fontSize: 11.5, color: 'var(--text-3)', marginTop: 10 }}>
                Or grab the last 200 lines:&nbsp;
                <span className="mono">docker logs --tail 200 {logsModal.name}</span>
              </div>
            </div>
            <div className="modal-foot">
              <button className="btn ghost sm" onClick={() => {
                if (navigator.clipboard) navigator.clipboard.writeText('docker compose logs -f ' + logsModal.name).catch(() => {});
              }}>Copy command</button>
              <button className="btn primary sm" onClick={() => setLogsModal(null)}>Close</button>
            </div>
          </div>
        </div>
      )}
      <div className="page-body">
        {containers === null && (
          <div style={{ textAlign: 'center', padding: '64px 0', color: 'var(--text-3)' }}>Loading…</div>
        )}
        {containers !== null && containers.length === 0 && (
          <div style={{ textAlign: 'center', padding: '64px 0', color: 'var(--text-3)' }}>
            <div style={{ fontSize: 32, marginBottom: 12 }}>🐳</div>
            <div style={{ fontWeight: 500, fontSize: 14 }}>No containers returned</div>
            <div style={{ fontSize: 12, marginTop: 6 }}>Confirm <code>/var/run/docker.sock</code> is mounted in the mam-api container</div>
          </div>
        )}
        {containers !== null && containers.length > 0 && (
          <div className="panel">
            <div className="container-row head">
              <div>Container</div>
              <div>Image</div>
              <div>State</div>
              <div>CPU</div>
              <div>Memory</div>
              <div>Ports</div>
              <div></div>
            </div>
            {containers.map(c => (
              <div key={c.id || c.name} className="container-row">
                <div>
                  <div style={{ fontWeight: 500, fontSize: 13 }}>{c.name}</div>
                  <div className="mono" style={{ fontSize: 11, color: "var(--text-3)" }}>up {c.uptime}</div>
                </div>
                <div className="mono" style={{ fontSize: 11.5, color: "var(--text-2)" }}>{c.image}</div>
                <div>
                  <span className="badge success"><StatusDot status="online" /> RUNNING</span>
                  {c.healthy && <span style={{ fontSize: 10.5, color: "var(--success)", marginLeft: 6 }}>healthy</span>}
                </div>
                <div className="mono" style={{ fontSize: 11.5 }}>
                  <div style={{ display: "flex", alignItems: "center", gap: 6 }}>
                    <div style={{ width: 40, height: 4, background: "var(--bg-3)", borderRadius: 99, overflow: "hidden" }}>
                      <div style={{ width: `${Math.min((c.cpu || 0) * 4, 100)}%`, height: "100%", background: "var(--accent)" }} />
                    </div>
                    <span>{(c.cpu || 0).toFixed(1)}%</span>
                  </div>
                </div>
                <div className="mono" style={{ fontSize: 11.5 }}>{c.mem} MB</div>
                <div className="mono" style={{ fontSize: 10.5, color: "var(--text-3)" }}>{c.ports}</div>
                <div style={{ display: "flex", gap: 4 }}>
                  <button className="btn ghost sm" onClick={() => showLogs(c)}>Logs</button>
                  <button className="btn ghost sm" onClick={() => restartContainer(c)}>Restart</button>
                </div>
              </div>
            ))}
          </div>
        )}
      </div>
    </div>
  );
}

function Cluster() {
  const [nodesData, setNodesData] = React.useState(window.ZAMPP_DATA.NODES);
  const [hovered, setHovered] = React.useState(null);

  const refresh = React.useCallback(() => {
    window.ZAMPP_API.fetch('/cluster')
      .then(data => {
        window.ZAMPP_DATA.NODES = data;
        setNodesData(data);
      })
      .catch(() => {});
  }, []);

  const nodesArr = Array.isArray(nodesData) ? nodesData : (nodesData?.nodes || []);

  const NODES = React.useMemo(() => {
    if (!nodesArr.length) return [];
    const primaryRaw = nodesArr.find(n => n.role === 'primary') || nodesArr[0];
    const others = nodesArr.filter(n => n !== primaryRaw);
    const primary = _normalizeNode(primaryRaw, 0.5, 0.46);
    const positioned = others.map((n, i) => {
      const angle = others.length <= 1
        ? Math.PI / 2
        : (i / others.length) * 2 * Math.PI - Math.PI / 2;
      return _normalizeNode(n, 0.5 + 0.32 * Math.cos(angle), 0.46 + 0.35 * Math.sin(angle));
    });
    return [primary, ...positioned];
  }, [nodesData]);

  const [selected, setSelected] = React.useState(null);
  const sel = selected || NODES[0] || null;
  const W = 720, H = 460;

  if (!NODES.length) {
    return (
      <div className="page">
        <div className="page-header">
          <h1>Cluster</h1>
          <div className="spacer" />
          <button className="btn ghost sm" onClick={refresh}><Icon name="refresh" />Refresh</button>
        </div>
        <div className="page-body">
          <div style={{ textAlign: 'center', padding: '64px 0', color: 'var(--text-3)' }}>No cluster nodes available</div>
        </div>
      </div>
    );
  }

  const primary = NODES.find(n => n.role === 'primary') || NODES[0];
  const edges = NODES.filter(n => n.id !== primary.id).map(n => ({
    from: primary,
    to: n,
    alive: n.status === 'online',
  }));

  const [adviceModal, setAdviceModal] = React.useState(null);  // {title, lines:[], commands?}

  const addNode = () => setAdviceModal({
    title: 'Add a worker node',
    lines: [
      'Worker nodes auto-register with the cluster on first heartbeat.',
      'Run these on the new host (replace 10.0.0.25 with this MAM\'s IP):',
    ],
    commands: [
      'git clone https://forge.wilddragon.net/zgaetano/dragonflight.git /opt/dragonflight',
      'cd /opt/dragonflight && cp .env.example .env && nano .env  # set NODE_ROLE=worker, point at MAM IP',
      'docker compose -f docker-compose.worker.yml up -d',
    ],
  });

  const drainNode = (node) => setAdviceModal({
    title: `Drain ${node.id}`,
    lines: [
      'Automated drain isn\'t implemented yet. The safe sequence is:',
      '1. Stop scheduling new jobs to this node (kill its node-agent).',
      '2. Let in-progress jobs finish.',
      '3. Remove the node from cluster membership.',
    ],
    commands: [`ssh ${node.ip || node.id} 'docker stop node-agent'`],
  });

  const removeNode = (node) => {
    if (!window.confirm('Remove node ' + node.id + ' from the cluster?\nThis does not stop the machine — it only removes it from cluster membership.')) return;
    window.ZAMPP_API.fetch('/cluster/nodes/' + encodeURIComponent(node.id), { method: 'DELETE' })
      .then(() => refresh())
      .catch(e => setAdviceModal({ title: 'Remove failed', lines: [e.message] }));
  };

  const nodeLogsHint = (node) => setAdviceModal({
    title: `Logs for ${node.id}`,
    lines: ['Live log streaming over the websocket isn\'t wired yet. SSH to the host and tail there:'],
    commands: [`ssh ${node.ip || node.id} 'docker compose -f /opt/dragonflight/docker-compose.yml logs -f'`],
  });

  return (
    <div className="page">
      <div className="page-header">
        <h1>Cluster</h1>
        <span className="subtitle">{NODES.filter(n => n.status === "online").length} of {NODES.length} nodes online</span>
        <div className="spacer" />
        <div className="status-pip"><span className="dot" /><span>Live</span></div>
        <button className="btn ghost sm" onClick={refresh}><Icon name="refresh" />Refresh</button>
        <button className="btn primary" onClick={addNode}><Icon name="plus" />Add node</button>
      </div>
      <div className="page-body">
        <div className="stat-row" style={{ padding: 0, marginBottom: 16 }}>
          <div className="stat-card">
            <div className="label"><Icon name="cluster" size={12} />Nodes</div>
            <div className="value">{NODES.length}</div>
          </div>
          <div className="stat-card">
            <div className="label"><Icon name="cpu" size={12} />Avg CPU</div>
            <div className="value">{Math.round(NODES.reduce((a, n) => a + (n.cpu || 0), 0) / NODES.length)} <span style={{ fontSize: 14, color: "var(--text-3)" }}>%</span></div>
          </div>
          <div className="stat-card">
            <div className="label"><Icon name="gpu" size={12} />GPUs</div>
            <div className="value">{NODES.reduce((a, n) => a + n.gpus.length, 0)}</div>
          </div>
          <div className="stat-card">
            <div className="label"><Icon name="hdd" size={12} />Avg Memory</div>
            <div className="value">{Math.round(NODES.reduce((a, n) => a + (n.mem || 0), 0) / NODES.length)} <span style={{ fontSize: 14, color: "var(--text-3)" }}>GB</span></div>
          </div>
        </div>

        <div style={{ display: "grid", gridTemplateColumns: "1fr 340px", gap: 16, alignItems: "start" }}>
          <div className="cluster-canvas">
            <div style={{ display: "flex", alignItems: "center", justifyContent: "space-between", padding: "12px 16px", borderBottom: "1px solid var(--border)" }}>
              <span style={{ fontWeight: 600, fontSize: 13 }}>Topology</span>
              <span style={{ fontSize: 11, color: 'var(--text-3)' }}>{NODES.length} node{NODES.length === 1 ? '' : 's'}</span>
            </div>
            <svg viewBox={`0 0 ${W} ${H}`} style={{ display: "block", width: "100%", height: "auto" }}>
              <defs>
                <radialGradient id="nodeGlow">
                  <stop offset="0%" stopColor="rgba(91,124,250,0.3)" />
                  <stop offset="100%" stopColor="rgba(91,124,250,0)" />
                </radialGradient>
                <pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse">
                  <path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.025)" strokeWidth="1" />
                </pattern>
              </defs>
              <rect width={W} height={H} fill="url(#grid)" />
              {edges.map((e, i) => {
                const x1 = e.from.x * W, y1 = e.from.y * H;
                const x2 = e.to.x * W, y2 = e.to.y * H;
                return (
                  <g key={i}>
                    <line x1={x1} y1={y1} x2={x2} y2={y2}
                      stroke={e.alive ? "var(--accent)" : "var(--text-4)"}
                      strokeWidth="1"
                      strokeDasharray={e.alive ? "0" : "4 3"}
                      opacity={e.alive ? 0.5 : 0.25}
                    />
                    {e.alive && (
                      <circle r="3" fill="var(--accent)">
                        <animateMotion dur={`${2 + i * 0.4}s`} repeatCount="indefinite"
                          path={`M ${x1} ${y1} L ${x2} ${y2}`} />
                      </circle>
                    )}
                  </g>
                );
              })}
              {NODES.map(n => {
                const cx = n.x * W, cy = n.y * H;
                const isSelected = sel && sel.id === n.id;
                const color = n.status === "online" ? "var(--success)" : "var(--text-4)";
                return (
                  <g key={n.id} transform={`translate(${cx}, ${cy})`}
                    style={{ cursor: "pointer" }}
                    onMouseEnter={() => setHovered(n.id)}
                    onMouseLeave={() => setHovered(null)}
                    onClick={() => setSelected(n)}>
                    {n.status === "online" && (
                      <circle r="44" fill="url(#nodeGlow)">
                        <animate attributeName="r" values="34;48;34" dur="3s" repeatCount="indefinite" />
                      </circle>
                    )}
                    <circle r={isSelected ? 26 : 22} fill="var(--bg-2)" stroke={isSelected ? "var(--accent)" : "var(--border-stronger)"} strokeWidth={isSelected ? 2 : 1} />
                    <circle r="6" cx="-13" cy="-13" fill={color} />
                    {n.role === "primary" && <path d="M -4 -2 L 0 2 L 4 -2 L 0 -6 Z" fill="var(--accent)" stroke="none" />}
                    {n.role !== "primary" && <text textAnchor="middle" y="3" fill="var(--text-2)" fontSize="10" fontFamily="var(--font-mono)">{n.role[0].toUpperCase()}</text>}
                    <text textAnchor="middle" y="40" fill={isSelected ? "var(--text-1)" : "var(--text-2)"} fontSize="11" fontWeight={isSelected ? 600 : 500}>{n.id}</text>
                    <text textAnchor="middle" y="54" fill="var(--text-3)" fontSize="10" fontFamily="var(--font-mono)">{n.ip}</text>
                  </g>
                );
              })}
            </svg>
          </div>

          {sel && (
            <div className="panel">
              <div style={{ padding: "12px 16px", borderBottom: "1px solid var(--border)", display: "flex", alignItems: "center", gap: 8 }}>
                <StatusDot status={sel.status} />
                <span style={{ fontWeight: 600, fontSize: 13 }}>{sel.id}</span>
                <span className={`badge ${sel.role === "primary" ? "accent" : "neutral"}`}>{sel.role}</span>
              </div>
              <div style={{ padding: 14, display: "flex", flexDirection: "column", gap: 10 }}>
                <DetailRow k="Status" v={<span style={{ color: sel.status === "online" ? "var(--success)" : "var(--text-3)" }}>{sel.status}</span>} />
                <DetailRow k="IP" v={sel.ip} mono />
                <DetailRow k="Version" v={sel.version} mono />
                <DetailRow k="Uptime" v={sel.uptime} mono />
                <DetailRow k="CPU" v={
                  <div style={{ display: "flex", alignItems: "center", gap: 6 }}>
                    <div style={{ width: 80, height: 4, background: "var(--bg-3)", borderRadius: 99, overflow: "hidden" }}>
                      <div style={{ width: `${sel.cpu}%`, height: "100%", background: "var(--accent)" }} />
                    </div>
                    <span className="mono">{sel.cpu}%</span>
                  </div>
                } />
                {sel.memTotal > 0 && (
                  <DetailRow k="Memory" v={
                    <div style={{ display: "flex", alignItems: "center", gap: 6 }}>
                      <div style={{ width: 80, height: 4, background: "var(--bg-3)", borderRadius: 99, overflow: "hidden" }}>
                        <div style={{ width: `${(sel.mem / sel.memTotal) * 100}%`, height: "100%", background: "var(--purple)" }} />
                      </div>
                      <span className="mono">{sel.mem} / {sel.memTotal} GB</span>
                    </div>
                  } />
                )}
                {sel.gpus.length > 0 && (
                  <div>
                    <div style={{ fontSize: 11, color: "var(--text-3)", marginBottom: 6 }}>GPUs ({sel.gpus.length})</div>
                    {sel.gpus.map((g, i) => (
                      <div key={i} className="mono" style={{ fontSize: 11.5, padding: "5px 8px", background: "var(--bg-2)", borderRadius: 4, marginBottom: 4, display: "flex", alignItems: "center", gap: 6 }}>
                        <Icon name="gpu" size={11} style={{ color: "var(--text-3)" }} />
                        <span>{g}</span>
                      </div>
                    ))}
                  </div>
                )}
                {sel.devices && sel.devices.length > 0 && (
                  <div>
                    <div style={{ fontSize: 11, color: "var(--text-3)", marginBottom: 6 }}>Capture devices</div>
                    {sel.devices.map((d, i) => (
                      <div key={i} className="mono" style={{ fontSize: 11.5, padding: "5px 8px", background: "var(--bg-2)", borderRadius: 4 }}>
                        <Icon name="video" size={11} style={{ color: "var(--text-3)", marginRight: 6 }} />{d}
                      </div>
                    ))}
                  </div>
                )}
                <div style={{ display: "flex", gap: 6, marginTop: 6 }}>
                  <button className="btn ghost sm" onClick={() => nodeLogsHint(sel)}>Logs</button>
                  <button className="btn ghost sm" onClick={() => drainNode(sel)}>Drain</button>
                  {sel.role !== "primary" && <button className="btn danger sm" onClick={() => removeNode(sel)}>Remove</button>}
                </div>
              </div>
            </div>
          )}
        </div>
      </div>
      {adviceModal && (
        <div className="modal-backdrop" onClick={() => setAdviceModal(null)}>
          <div className="modal" style={{ width: 560 }} onClick={e => e.stopPropagation()}>
            <div className="modal-head">
              <div style={{ fontSize: 15, fontWeight: 600 }}>{adviceModal.title}</div>
              <button className="icon-btn" onClick={() => setAdviceModal(null)}><Icon name="x" /></button>
            </div>
            <div className="modal-body">
              {(adviceModal.lines || []).map((l, i) => (
                <div key={i} style={{ fontSize: 12.5, color: 'var(--text-2)', marginBottom: 6, lineHeight: 1.55 }}>{l}</div>
              ))}
              {(adviceModal.commands || []).map((c, i) => (
                <code key={i} className="mono" style={{ display: 'block', background: 'var(--bg-2)', padding: 10, borderRadius: 5, fontSize: 11.5, marginTop: 8, overflowX: 'auto' }}>{c}</code>
              ))}
            </div>
            <div className="modal-foot">
              {adviceModal.commands && adviceModal.commands.length > 0 && (
                <button className="btn ghost sm" onClick={() => {
                  if (navigator.clipboard) navigator.clipboard.writeText(adviceModal.commands.join('\n')).catch(() => {});
                }}>Copy commands</button>
              )}
              <button className="btn primary sm" onClick={() => setAdviceModal(null)}>Got it</button>
            </div>
          </div>
        </div>
      )}
    </div>
  );
}

function DetailRow({ k, v, mono }) {
  return (
    <div style={{ display: "grid", gridTemplateColumns: "90px 1fr", alignItems: "center", fontSize: 12 }}>
      <span style={{ color: "var(--text-3)" }}>{k}</span>
      <span className={mono ? "mono" : ""} style={{ fontSize: mono ? 11.5 : 12 }}>{v}</span>
    </div>
  );
}

function Settings() {
  const [section, setSection] = React.useState('storage');

  const SECTIONS = [
    { id: 'storage',  label: 'S3 / Object storage', icon: 'hdd' },
    { id: 'proxy',    label: 'Proxy encoding',      icon: 'gpu' },
    { id: 'growing',  label: 'Growing files (SMB)', icon: 'hdd' },
    { id: 'sdk',      label: 'Capture SDKs',        icon: 'video' },
    { id: 'sdi',      label: 'SDI capture',         icon: 'video' },
  ];

  return (
    <div className="page">
      <div className="page-header">
        <h1>Settings</h1>
        <span className="subtitle">System configuration · changes apply without restart</span>
      </div>
      <div className="page-body">
        <div style={{ display: 'grid', gridTemplateColumns: '200px 1fr', gap: 24, alignItems: 'start' }}>
          <nav className="settings-nav">
            {SECTIONS.map(s => (
              <a key={s.id}
                 className={`settings-nav-item ${section === s.id ? 'active' : ''}`}
                 onClick={() => setSection(s.id)}
                 style={{ cursor: 'pointer' }}>
                <Icon name={s.icon} size={14} />{s.label}
              </a>
            ))}
          </nav>
          <div style={{ display: 'flex', flexDirection: 'column', gap: 16 }}>
            {section === 'storage' && <S3SettingsCard />}
            {section === 'proxy'   && <GpuSettingsCard />}
            {section === 'growing' && <GrowingSettingsCard />}
            {section === 'sdk'     && <SdkSettingsCard />}
            {section === 'sdi'     && <SdiSettingsCard />}
          </div>
        </div>
      </div>
    </div>
  );
}

function S3SettingsCard() {
  const [s3, setS3] = React.useState({ s3_endpoint: '', s3_bucket: '', s3_access_key: '', s3_secret_key: '', s3_region: 'us-east-1' });
  const [loading, setLoading] = React.useState(true);
  const [saving,  setSaving]  = React.useState(false);
  const [testing, setTesting] = React.useState(false);
  const [msg,     setMsg]     = React.useState(null);
  const [secretExists, setSecretExists] = React.useState(false);

  React.useEffect(() => {
    window.ZAMPP_API.fetch('/settings/s3')
      .then(data => {
        // Diagnostic: previous reports of "endpoint always blank" were
        // hard to chase without seeing the raw payload. Log it once on
        // load so the next user can verify quickly.
        try { console.debug('[settings] /settings/s3 →', data); } catch (_) {}
        setS3({
          s3_endpoint:   data.s3_endpoint   || '',
          s3_bucket:     data.s3_bucket     || '',
          s3_access_key: data.s3_access_key || '',
          s3_secret_key: '',
          s3_region:     data.s3_region     || 'us-east-1',
        });
        setSecretExists(!!data.s3_secret_key_exists);
        setLoading(false);
      })
      .catch(err => {
        console.error('[settings] /settings/s3 failed:', err);
        setMsg({ ok: false, text: 'Could not load S3 settings: ' + (err.message || err) });
        setLoading(false);
      });
  }, []);

  const save = () => {
    setSaving(true); setMsg(null);
    window.ZAMPP_API.fetch('/settings/s3', { method: 'PUT', body: JSON.stringify(s3) })
      .then(() => { setSaving(false); setMsg({ ok: true, text: 'Saved and applied.' }); if (s3.s3_secret_key) setSecretExists(true); })
      .catch(e  => { setSaving(false); setMsg({ ok: false, text: e.message }); });
  };
  const test = () => {
    setTesting(true); setMsg(null);
    window.ZAMPP_API.fetch('/settings/s3/test', { method: 'POST', body: JSON.stringify(s3) })
      .then(r => { setTesting(false); setMsg({ ok: r.ok !== false, text: r.message || 'Connection OK' }); })
      .catch(e => { setTesting(false); setMsg({ ok: false, text: e.message }); });
  };

  return (
    <SettingsCard icon="hdd" title="S3 / Object Storage" sub="S3-compatible bucket for media asset storage"
      tag={secretExists ? <span className="badge success">connected</span> : <span className="badge warning">not configured</span>}>
      {loading ? <div style={{ color: 'var(--text-3)', fontSize: 12.5 }}>Loading…</div> : (<>
        <SField label="Endpoint URL">
          <input className="field-input mono" value={s3.s3_endpoint} onChange={e => setS3(p => ({...p, s3_endpoint: e.target.value}))} placeholder="https://s3.example.com" />
        </SField>
        <div style={{ display: 'grid', gridTemplateColumns: '1fr 1fr', gap: 12 }}>
          <SField label="Region"><input className="field-input mono" value={s3.s3_region} onChange={e => setS3(p => ({...p, s3_region: e.target.value}))} placeholder="us-east-1" /></SField>
          <SField label="Bucket"><input className="field-input mono" value={s3.s3_bucket} onChange={e => setS3(p => ({...p, s3_bucket: e.target.value}))} placeholder="my-bucket" /></SField>
        </div>
        <SField label="Access key ID"><input className="field-input mono" value={s3.s3_access_key} onChange={e => setS3(p => ({...p, s3_access_key: e.target.value}))} placeholder="Access key ID" /></SField>
        <SField label="Secret access key"><input className="field-input mono" type="password" value={s3.s3_secret_key} onChange={e => setS3(p => ({...p, s3_secret_key: e.target.value}))} placeholder={secretExists ? '(saved — type to replace)' : 'Secret key'} /></SField>
        <SettingsMsg msg={msg} />
        <div style={{ display: 'flex', gap: 6, marginTop: 8 }}>
          <button className="btn primary sm" onClick={save} disabled={saving}>{saving ? 'Saving…' : 'Save & apply'}</button>
          <button className="btn ghost sm" onClick={test} disabled={testing}>{testing ? 'Testing…' : 'Test connection'}</button>
        </div>
      </>)}
    </SettingsCard>
  );
}

function GpuSettingsCard() {
  const [cfg, setCfg] = React.useState(null);
  const [saving, setSaving] = React.useState(false);
  const [msg, setMsg] = React.useState(null);

  React.useEffect(() => {
    window.ZAMPP_API.fetch('/settings/transcoding').then(setCfg).catch(() => setCfg({}));
  }, []);

  const save = () => {
    setSaving(true); setMsg(null);
    window.ZAMPP_API.fetch('/settings/transcoding', { method: 'PUT', body: JSON.stringify(cfg) })
      .then(() => { setSaving(false); setMsg({ ok: true, text: 'Saved — new settings apply to the next proxy job.' }); })
      .catch(e => { setSaving(false); setMsg({ ok: false, text: e.message }); });
  };

  if (!cfg) return <SettingsCard icon="gpu" title="Proxy encoding" sub="Global proxy encoder applied to every ingested file"><div style={{ color: 'var(--text-3)', fontSize: 12.5 }}>Loading…</div></SettingsCard>;
  const set = (k, v) => setCfg(c => ({ ...c, [k]: v }));
  const gpuEnabled = cfg.gpu_transcode_enabled === 'true' || cfg.gpu_transcode_enabled === true;

  return (
    <SettingsCard icon="gpu" title="Proxy encoding" sub="Global proxy encoder applied to every ingested file"
      tag={gpuEnabled ? <span className="badge success">GPU mode</span> : <span className="badge neutral">CPU mode</span>}>
      <div style={{ fontSize: 12, color: 'var(--text-3)', lineHeight: 1.55, marginBottom: 4 }}>
        These settings drive the proxy worker for <strong style={{ color: 'var(--text-2)' }}>every</strong> ingested asset (SDI, SRT, RTMP, upload). GPU mode uses NVENC / VAAPI when hardware is available; CPU mode uses libx264.
      </div>

      <SField label="Hardware acceleration">
        <label style={{ display: 'flex', alignItems: 'center', gap: 8, fontSize: 12.5 }}>
          <input type="checkbox" checked={gpuEnabled} onChange={e => set('gpu_transcode_enabled', String(e.target.checked))} />
          <span style={{ color: 'var(--text-2)' }}>Use GPU encoders (NVENC / VAAPI) when available — falls back to CPU on missing hardware</span>
        </label>
      </SField>

      <div style={{ display: 'grid', gridTemplateColumns: '1fr 1fr', gap: 12 }}>
        <SField label={gpuEnabled ? 'GPU codec' : 'CPU codec'}>
          <select className="field-input" value={cfg.gpu_codec || 'h264_nvenc'} onChange={e => set('gpu_codec', e.target.value)} style={{ appearance: 'auto' }}>
            {gpuEnabled ? (<>
              <option value="h264_nvenc">h264_nvenc (NVIDIA)</option>
              <option value="hevc_nvenc">hevc_nvenc (NVIDIA HEVC)</option>
              <option value="h264_vaapi">h264_vaapi (Intel/AMD)</option>
              <option value="hevc_vaapi">hevc_vaapi (Intel/AMD HEVC)</option>
            </>) : (<>
              <option value="libx264">libx264 (H.264, recommended)</option>
              <option value="libx265">libx265 (HEVC, slower)</option>
            </>)}
          </select>
        </SField>
        <SField label="Preset">
          <select className="field-input" value={cfg.gpu_preset || (gpuEnabled ? 'p4' : 'fast')} onChange={e => set('gpu_preset', e.target.value)} style={{ appearance: 'auto' }}>
            {gpuEnabled
              ? ['p1','p2','p3','p4','p5','p6','p7'].map(p => <option key={p} value={p}>{p}</option>)
              : ['ultrafast','superfast','veryfast','faster','fast','medium','slow','slower'].map(p => <option key={p} value={p}>{p}</option>)}
          </select>
        </SField>
      </div>

      <div style={{ display: 'grid', gridTemplateColumns: '1fr 1fr', gap: 12 }}>
        <SField label="Target bitrate (Mbps)">
          <input className="field-input mono" type="number" value={cfg.gpu_bitrate_mbps || ''} onChange={e => set('gpu_bitrate_mbps', e.target.value)} placeholder="10" />
        </SField>
        <SField label="Rate control">
          <select className="field-input" value={cfg.gpu_rc_mode || 'cbr'} onChange={e => set('gpu_rc_mode', e.target.value)} style={{ appearance: 'auto' }}>
            <option value="cbr">CBR — constant bitrate</option>
            <option value="vbr">VBR — variable bitrate</option>
            <option value="cqp">CQP / CRF — constant quality</option>
          </select>
        </SField>
      </div>

      <div style={{ display: 'grid', gridTemplateColumns: '1fr 1fr', gap: 12 }}>
        <SField label="Audio codec">
          <select className="field-input" value={cfg.gpu_audio_codec || 'aac'} onChange={e => set('gpu_audio_codec', e.target.value)} style={{ appearance: 'auto' }}>
            <option value="aac">aac</option>
            <option value="opus">opus</option>
            <option value="mp3">mp3</option>
          </select>
        </SField>
        <SField label="Audio bitrate (kbps)">
          <input className="field-input mono" type="number" value={cfg.gpu_audio_bitrate_kbps || ''} onChange={e => set('gpu_audio_bitrate_kbps', e.target.value)} placeholder="192" />
        </SField>
      </div>

      <SettingsMsg msg={msg} />
      <div style={{ display: 'flex', gap: 6, marginTop: 8 }}>
        <button className="btn primary sm" onClick={save} disabled={saving}>{saving ? 'Saving…' : 'Save'}</button>
      </div>
    </SettingsCard>
  );
}

function GrowingSettingsCard() {
  const [cfg, setCfg] = React.useState(null);
  const [saving, setSaving] = React.useState(false);
  const [msg, setMsg] = React.useState(null);

  React.useEffect(() => {
    window.ZAMPP_API.fetch('/settings/growing').then(setCfg).catch(() => setCfg({
      growing_enabled: 'false', growing_path: '/growing', growing_smb_url: '', growing_promote_after_seconds: '8',
    }));
  }, []);

  const save = () => {
    setSaving(true); setMsg(null);
    window.ZAMPP_API.fetch('/settings/growing', { method: 'PUT', body: JSON.stringify(cfg) })
      .then(() => { setSaving(false); setMsg({ ok: true, text: 'Saved.' }); })
      .catch(e => { setSaving(false); setMsg({ ok: false, text: e.message }); });
  };

  if (!cfg) return <SettingsCard icon="hdd" title="Growing files (SMB)" sub="Loading…"><div style={{color:'var(--text-3)'}}>…</div></SettingsCard>;
  const set = (k, v) => setCfg(c => ({ ...c, [k]: v }));
  const enabled = cfg.growing_enabled === 'true' || cfg.growing_enabled === true;

  return (
    <SettingsCard icon="hdd" title="Growing files (SMB)" sub="High-speed local landing zone; promote to S3 on stop"
      tag={enabled ? <span className="badge success">enabled</span> : <span className="badge neutral">disabled</span>}>
      <SField label="Enable growing-file capture">
        <label style={{ display: 'flex', alignItems: 'center', gap: 8, fontSize: 12.5 }}>
          <input type="checkbox" checked={enabled} onChange={e => set('growing_enabled', String(e.target.checked))} />
          <span style={{ color: 'var(--text-2)' }}>Capture writes to the local SMB share first; Premier can edit while it's still growing.</span>
        </label>
      </SField>
      <SField label="Container mount path">
        <input className="field-input mono" value={cfg.growing_path || ''} onChange={e => set('growing_path', e.target.value)} placeholder="/growing" />
      </SField>
      <SField label="SMB share URL (for editors)">
        <input className="field-input mono" value={cfg.growing_smb_url || ''} onChange={e => set('growing_smb_url', e.target.value)} placeholder="smb://10.0.0.25/mam-growing" />
      </SField>
      <SField label="Promote-to-S3 idle threshold (seconds)">
        <input className="field-input mono" type="number" value={cfg.growing_promote_after_seconds || ''} onChange={e => set('growing_promote_after_seconds', e.target.value)} placeholder="8" />
      </SField>
      <SettingsMsg msg={msg} />
      <div style={{ display: 'flex', gap: 6, marginTop: 8 }}>
        <button className="btn primary sm" onClick={save} disabled={saving}>{saving ? 'Saving…' : 'Save'}</button>
      </div>
    </SettingsCard>
  );
}

function SdiSettingsCard() {
  return (
    <SettingsCard icon="video" title="SDI capture" sub="DeckLink device routing and defaults"
      tag={<span className="badge neutral">per-recorder</span>}>
      <div style={{ color: 'var(--text-3)', fontSize: 12.5, lineHeight: 1.6 }}>
        SDI settings are configured per-recorder. Use{' '}
        <strong style={{ color: 'var(--text-2)' }}>Ingest → Recorders → New recorder</strong>{' '}
        to pick the DeckLink port, codec, and audio routing.
      </div>
      <div style={{ marginTop: 12 }}>
        <a className="btn ghost sm" href="#" onClick={e => { e.preventDefault(); window.dispatchEvent(new CustomEvent('dragonflight-navigate', { detail: 'capture' })); }}>
          <Icon name="video" />Open Capture dashboard
        </a>
      </div>
    </SettingsCard>
  );
}

// ────────────────────────────────────────────────────────────────────────────
// Capture SDK deployment — Blackmagic / AJA / Deltacast
// ────────────────────────────────────────────────────────────────────────────
const SDK_VENDORS = [
  {
    id: 'blackmagic',
    name: 'Blackmagic DeckLink',
    sub: 'DeckLink SDK 16.x — required for SDI capture via DeckLink cards',
    expect: 'DeckLinkAPI.h, DeckLinkAPIDispatch.cpp, LinuxCOM.h, libDeckLinkAPI.so',
    docs: 'https://www.blackmagicdesign.com/developer/product/capture',
    buildHint: 'docker compose build --no-cache capture',
    status: 'wired',
  },
  {
    id: 'aja',
    name: 'AJA NTV2',
    sub: 'NTV2 SDK — for Kona / Io / U-Tap / T-Tap cards',
    expect: 'libajantv2.so, ntv2card.h, ntv2enums.h',
    docs: 'https://sdksupport.aja.com/',
    buildHint: 'FFmpeg patch + Dockerfile update pending — files will be staged for the next capture image build',
    status: 'staging-only',
  },
  {
    id: 'deltacast',
    name: 'Deltacast VideoMaster',
    sub: 'VideoMasterHD SDK — for FLEX / DELTA-h4k2 / etc.',
    expect: 'VideoMasterHD_Core.h, libVideoMasterHD_Core.so',
    docs: 'https://www.deltacast.tv/products/sdk',
    buildHint: 'FFmpeg patch + Dockerfile update pending — files will be staged for the next capture image build',
    status: 'staging-only',
  },
];

function SdkSettingsCard() {
  const [statuses, setStatuses] = React.useState(null);
  const [msg, setMsg] = React.useState(null);

  const load = React.useCallback(() => {
    window.ZAMPP_API.fetch('/sdk').then(setStatuses).catch(() => setStatuses({}));
  }, []);

  React.useEffect(() => { load(); }, [load]);

  return (
    <SettingsCard icon="video" title="Capture SDKs" sub="Vendor SDKs are licensed — upload them here so the capture container can build with hardware support"
      tag={<span className="badge neutral">{SDK_VENDORS.length} vendors</span>}>
      <div style={{ fontSize: 12, color: 'var(--text-3)', lineHeight: 1.55, marginBottom: 4 }}>
        Each SDK archive should be a <strong style={{ color: 'var(--text-2)' }}>.zip</strong> or <strong style={{ color: 'var(--text-2)' }}>.tar.gz</strong> containing the vendor's Linux SDK contents. After uploading, rebuild the capture container on the host with a DeckLink/AJA/Deltacast card. The SDK files are staged under <code className="mono" style={{ fontSize: 11.5 }}>/sdk/&lt;vendor&gt;/</code> inside mam-api.
      </div>
      <SettingsMsg msg={msg} />
      <div style={{ display: 'flex', flexDirection: 'column', gap: 10 }}>
        {SDK_VENDORS.map(v => (
          <SdkVendorRow
            key={v.id}
            vendor={v}
            status={(statuses && statuses[v.id]) || null}
            onDone={(text, ok = true) => { setMsg({ ok, text }); load(); }}
          />
        ))}
      </div>
    </SettingsCard>
  );
}

function SdkVendorRow({ vendor, status, onDone }) {
  const fileRef = React.useRef(null);
  const [uploading, setUploading] = React.useState(false);
  const [progress, setProgress] = React.useState(0);

  const deployed = status && status.file_count > 0;
  const lastUpload = status?.uploaded_at
    ? new Date(status.uploaded_at).toLocaleString()
    : null;

  const handleFile = async (file) => {
    if (!file) return;
    setUploading(true); setProgress(0);
    const fd = new FormData();
    fd.append('archive', file);

    // Use XHR so we can report progress to the user — fetch's stream API is fiddly.
    await new Promise((resolve) => {
      const xhr = new XMLHttpRequest();
      xhr.open('POST', '/api/v1/sdk/' + vendor.id);
      xhr.withCredentials = true;
      xhr.upload.onprogress = (e) => {
        if (e.lengthComputable) setProgress(Math.round((e.loaded / e.total) * 100));
      };
      xhr.onload = () => {
        setUploading(false); setProgress(0);
        if (xhr.status >= 200 && xhr.status < 300) {
          onDone(vendor.name + ': SDK staged.', true);
        } else {
          let txt = xhr.responseText;
          try { txt = JSON.parse(xhr.responseText).error || txt; } catch {}
          onDone(vendor.name + ': upload failed — ' + txt, false);
        }
        resolve();
      };
      xhr.onerror = () => {
        setUploading(false); setProgress(0);
        onDone(vendor.name + ': network error', false);
        resolve();
      };
      xhr.send(fd);
    });
  };

  const clear = () => {
    if (!confirm('Remove staged ' + vendor.name + ' SDK files?')) return;
    window.ZAMPP_API.fetch('/sdk/' + vendor.id, { method: 'DELETE' })
      .then(() => onDone(vendor.name + ': cleared.', true))
      .catch(e => onDone(vendor.name + ': ' + e.message, false));
  };

  return (
    <div style={{ border: '1px solid var(--border)', borderRadius: 6, padding: 12, background: 'var(--bg-2)' }}>
      <div style={{ display: 'flex', alignItems: 'center', gap: 8, marginBottom: 4 }}>
        <strong style={{ fontSize: 13 }}>{vendor.name}</strong>
        {deployed
          ? <span className="badge success">deployed · {status.file_count} files</span>
          : <span className="badge neutral">not deployed</span>}
        {vendor.status === 'staging-only' && <span className="badge warning" title={vendor.buildHint}>build pipeline pending</span>}
        <div style={{ flex: 1 }} />
        {deployed && <button className="btn ghost sm" onClick={clear}>Remove</button>}
        <button className="btn primary sm" onClick={() => fileRef.current?.click()} disabled={uploading}>
          {uploading ? `Uploading ${progress}%` : (deployed ? 'Replace' : 'Upload SDK')}
        </button>
        <input ref={fileRef} type="file" accept=".zip,.tar.gz,.tgz,.tar"
               style={{ display: 'none' }}
               onChange={e => handleFile(e.target.files?.[0])} />
      </div>
      <div style={{ fontSize: 11.5, color: 'var(--text-3)', lineHeight: 1.55 }}>
        {vendor.sub}<br />
        <span className="mono" style={{ fontSize: 11 }}>expects: {vendor.expect}</span>
        {lastUpload && <><br /><span style={{ color: 'var(--text-3)' }}>uploaded: {lastUpload}</span></>}
        {deployed && <><br /><span className="mono" style={{ fontSize: 11, color: 'var(--text-3)' }}>on host: rebuild with → {vendor.buildHint}</span></>}
      </div>
    </div>
  );
}

function AmppSettingsCard() {
  const [cfg, setCfg] = React.useState(null);
  const [saving, setSaving] = React.useState(false);
  const [testing, setTesting] = React.useState(false);
  const [msg, setMsg] = React.useState(null);
  const [tokenExists, setTokenExists] = React.useState(false);

  React.useEffect(() => {
    window.ZAMPP_API.fetch('/settings/ampp').then(d => {
      setCfg({ ampp_base_url: d.ampp_base_url || '', ampp_token: '' });
      setTokenExists(!!d.ampp_token_exists);
    }).catch(() => setCfg({ ampp_base_url: '', ampp_token: '' }));
  }, []);

  const save = () => {
    setSaving(true); setMsg(null);
    window.ZAMPP_API.fetch('/settings/ampp', { method: 'PUT', body: JSON.stringify(cfg) })
      .then(() => { setSaving(false); setMsg({ ok: true, text: 'Saved.' }); if (cfg.ampp_token) setTokenExists(true); })
      .catch(e => { setSaving(false); setMsg({ ok: false, text: e.message }); });
  };
  const test = () => {
    setTesting(true); setMsg(null);
    window.ZAMPP_API.fetch('/settings/ampp/test', { method: 'POST', body: JSON.stringify(cfg) })
      .then(r => { setTesting(false); setMsg({ ok: true, text: r.message || 'Connection OK' }); })
      .catch(e => { setTesting(false); setMsg({ ok: false, text: e.message }); });
  };

  if (!cfg) return <SettingsCard icon="link" title="AMPP integration" sub="Loading…"><div style={{color:'var(--text-3)'}}>…</div></SettingsCard>;

  return (
    <SettingsCard icon="link" title="AMPP integration" sub="Migrate assets and metadata from Grass Valley AMPP"
      tag={tokenExists ? <span className="badge success">connected</span> : <span className="badge neutral">not configured</span>}>
      <SField label="AMPP base URL">
        <input className="field-input mono" value={cfg.ampp_base_url} onChange={e => setCfg(p => ({...p, ampp_base_url: e.target.value}))} placeholder="https://my-org.gvampp.tv" />
      </SField>
      <SField label="API token">
        <input className="field-input mono" type="password" value={cfg.ampp_token} onChange={e => setCfg(p => ({...p, ampp_token: e.target.value}))} placeholder={tokenExists ? '(saved — type to replace)' : 'AMPP API token'} />
      </SField>
      <SettingsMsg msg={msg} />
      <div style={{ display: 'flex', gap: 6, marginTop: 8 }}>
        <button className="btn primary sm" onClick={save} disabled={saving}>{saving ? 'Saving…' : 'Save'}</button>
        <button className="btn ghost sm" onClick={test} disabled={testing}>{testing ? 'Testing…' : 'Test connection'}</button>
      </div>
    </SettingsCard>
  );
}

function SettingsMsg({ msg }) {
  if (!msg) return null;
  return (
    <div style={{ fontSize: 12, padding: '6px 10px', borderRadius: 5, border: '1px solid',
                  background: msg.ok ? 'var(--success-soft)' : 'var(--danger-soft)',
                  borderColor: msg.ok ? 'var(--success)' : 'var(--danger)',
                  color: msg.ok ? 'var(--success)' : 'var(--danger)' }}>
      {msg.text}
    </div>
  );
}

function SField({ label, children }) {
  return (
    <div className="field">
      <label className="field-label">{label}</label>
      {children}
    </div>
  );
}

function SettingsCard({ icon, title, sub, tag, children }) {
  return (
    <div className="settings-card">
      <div className="settings-card-head">
        <div className="settings-card-icon"><Icon name={icon} size={16} /></div>
        <div style={{ flex: 1, minWidth: 0 }}>
          <div style={{ fontWeight: 600, fontSize: 14 }}>{title}</div>
          <div style={{ fontSize: 12, color: "var(--text-3)", marginTop: 2 }}>{sub}</div>
        </div>
        {tag}
      </div>
      <div className="settings-card-body">{children}</div>
    </div>
  );
}

Object.assign(window, { Users, Tokens, Containers, Cluster, Settings });