/**
 * App.jsx — Saltybot Social Dashboard root component.
 *
 * Layout:
 *   [TopBar: connection config + pipeline state badge]
 *   [TabNav: Status | Faces | Conversation | Personality | Navigation]
 *   [TabContent]
 */

import { useState, useCallback } from 'react';
import { useRosbridge } from './hooks/useRosbridge.js';
import { StatusPanel } from './components/StatusPanel.jsx';
import { FaceGallery } from './components/FaceGallery.jsx';
import { ConversationLog } from './components/ConversationLog.jsx';
import { PersonalityTuner } from './components/PersonalityTuner.jsx';
import { NavModeSelector } from './components/NavModeSelector.jsx';

const TABS = [
  { id: 'status',       label: 'Status',         icon: '⬤' },
  { id: 'faces',        label: 'Faces',           icon: '◉' },
  { id: 'conversation', label: 'Conversation',    icon: '◌' },
  { id: 'personality',  label: 'Personality',     icon: '◈' },
  { id: 'navigation',   label: 'Navigation',      icon: '◫' },
];

const DEFAULT_WS_URL = 'ws://localhost:9090';

function ConnectionBar({ url, setUrl, connected, error }) {
  const [editing, setEditing] = useState(false);
  const [draft, setDraft] = useState(url);

  const handleApply = () => {
    setUrl(draft);
    setEditing(false);
  };

  return (
    <div className="flex items-center gap-2 text-xs">
      {/* Connection dot */}
      <div className={`w-2 h-2 rounded-full shrink-0 ${
        connected ? 'bg-green-400' : error ? 'bg-red-500' : 'bg-gray-600'
      }`} />

      {editing ? (
        <div className="flex items-center gap-1">
          <input
            value={draft}
            onChange={(e) => setDraft(e.target.value)}
            onKeyDown={(e) => { if (e.key === 'Enter') handleApply(); if (e.key === 'Escape') setEditing(false); }}
            autoFocus
            className="bg-gray-900 border border-cyan-800 rounded px-2 py-0.5 text-cyan-300 w-52 focus:outline-none"
          />
          <button onClick={handleApply} className="px-2 py-0.5 rounded bg-cyan-950 border border-cyan-700 text-cyan-400 hover:bg-cyan-900">Connect</button>
          <button onClick={() => setEditing(false)} className="text-gray-600 hover:text-gray-400 px-1">✕</button>
        </div>
      ) : (
        <button
          onClick={() => { setDraft(url); setEditing(true); }}
          className="text-gray-500 hover:text-cyan-400 transition-colors truncate max-w-40"
          title={url}
        >
          {connected ? (
            <span className="text-green-400">rosbridge: {url}</span>
          ) : error ? (
            <span className="text-red-400" title={error}>⚠ {url}</span>
          ) : (
            <span className="text-gray-500">{url} (connecting…)</span>
          )}
        </button>
      )}
    </div>
  );
}

export default function App() {
  const [wsUrl, setWsUrl] = useState(DEFAULT_WS_URL);
  const [activeTab, setActiveTab] = useState('status');

  const { connected, error, subscribe, publish, callService, setParam } = useRosbridge(wsUrl);

  // Memoized publish for NavModeSelector (avoids recreating on every render)
  const publishFn = useCallback(
    (name, type, data) => publish(name, type, data),
    [publish]
  );

  return (
    <div className="min-h-screen flex flex-col bg-[#050510] text-gray-300 font-mono">
      {/* ── Top Bar ── */}
      <header className="flex items-center justify-between px-4 py-2 bg-[#070712] border-b border-cyan-950 shrink-0 gap-2 flex-wrap">
        <div className="flex items-center gap-3">
          <span className="text-orange-500 font-bold tracking-widest text-sm">⚡ SALTYBOT</span>
          <span className="text-cyan-800 text-xs hidden sm:inline">SOCIAL DASHBOARD</span>
        </div>

        <ConnectionBar
          url={wsUrl}
          setUrl={setWsUrl}
          connected={connected}
          error={error}
        />
      </header>

      {/* ── Tab Nav ── */}
      <nav className="bg-[#070712] border-b border-cyan-950 shrink-0">
        <div className="flex overflow-x-auto">
          {TABS.map((tab) => (
            <button
              key={tab.id}
              onClick={() => setActiveTab(tab.id)}
              className={`flex items-center gap-1.5 px-4 py-2.5 text-xs font-bold tracking-widest whitespace-nowrap border-b-2 transition-colors ${
                activeTab === tab.id
                  ? 'border-cyan-500 text-cyan-300 bg-cyan-950 bg-opacity-30'
                  : 'border-transparent text-gray-500 hover:text-gray-300 hover:border-gray-700'
              }`}
            >
              <span className="hidden sm:inline text-base leading-none">{tab.icon}</span>
              {tab.label.toUpperCase()}
            </button>
          ))}
        </div>
      </nav>

      {/* ── Content ── */}
      <main className="flex-1 overflow-y-auto p-4">
        {activeTab === 'status' && (
          <StatusPanel subscribe={subscribe} />
        )}

        {activeTab === 'faces' && (
          <FaceGallery
            subscribe={subscribe}
            callService={callService}
          />
        )}

        {activeTab === 'conversation' && (
          <ConversationLog subscribe={subscribe} />
        )}

        {activeTab === 'personality' && (
          <PersonalityTuner
            subscribe={subscribe}
            setParam={setParam}
          />
        )}

        {activeTab === 'navigation' && (
          <NavModeSelector
            subscribe={subscribe}
            publish={publishFn}
          />
        )}
      </main>

      {/* ── Footer ── */}
      <footer className="bg-[#070712] border-t border-cyan-950 px-4 py-1.5 flex items-center justify-between text-xs text-gray-700 shrink-0">
        <span>rosbridge: <code className="text-gray-600">{wsUrl}</code></span>
        <span className={connected ? 'text-green-700' : 'text-red-900'}>
          {connected ? 'CONNECTED' : 'DISCONNECTED'}
        </span>
      </footer>
    </div>
  );
}