/**
 * App.jsx — Saltybot Social + Telemetry + Fleet + Mission Dashboard root component.
 *
 * Social tabs (issue #107):
 *   Status | Faces | Conversation | Personality | Navigation
 *
 * Telemetry tabs (issue #126):
 *   IMU | Battery | Motors | Map | Control | Health
 *
 * Fleet tabs (issue #139):
 *   Fleet (self-contained via useFleet)
 *
 * Mission tabs (issue #145):
 *   Missions (waypoint editor, route builder, geofence, schedule, execute)
 */

import { useState, useCallback } from 'react';
import { useRosbridge } from './hooks/useRosbridge.js';

// Social panels
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';

// Telemetry panels
import { ImuPanel }     from './components/ImuPanel.jsx';
import { BatteryPanel } from './components/BatteryPanel.jsx';
import { MotorPanel }   from './components/MotorPanel.jsx';
import { MapViewer }    from './components/MapViewer.jsx';
import { ControlMode }  from './components/ControlMode.jsx';
import { SystemHealth } from './components/SystemHealth.jsx';

// Fleet panel (issue #139)
import { FleetPanel } from './components/FleetPanel.jsx';

// Mission planner (issue #145)
import { MissionPlanner } from './components/MissionPlanner.jsx';

// Settings panel (issue #160)
import { SettingsPanel } from './components/SettingsPanel.jsx';

const TAB_GROUPS = [
  {
    label: 'SOCIAL',
    color: 'text-cyan-600',
    tabs: [
      { id: 'status',       label: 'Status',      },
      { id: 'faces',        label: 'Faces',       },
      { id: 'conversation', label: 'Convo',       },
      { id: 'personality',  label: 'Personality', },
      { id: 'navigation',   label: 'Nav Mode',    },
    ],
  },
  {
    label: 'TELEMETRY',
    color: 'text-amber-600',
    tabs: [
      { id: 'imu',     label: 'IMU',     },
      { id: 'battery', label: 'Battery', },
      { id: 'motors',  label: 'Motors',  },
      { id: 'map',     label: 'Map',     },
      { id: 'control', label: 'Control', },
      { id: 'health',  label: 'Health',  },
    ],
  },
  {
    label: 'FLEET',
    color: 'text-green-600',
    tabs: [
      { id: 'fleet',    label: 'Fleet'    },
      { id: 'missions', label: 'Missions' },
    ],
  },
  {
    label: 'CONFIG',
    color: 'text-purple-600',
    tabs: [
      { id: 'settings', label: 'Settings' },
    ],
  },
];

const FLEET_TABS = new Set(['fleet', 'missions']);

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">
      <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 text-xs"
          >
            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-52"
          title={url}
        >
          {connected ? (
            <span className="text-green-400">{url}</span>
          ) : error ? (
            <span className="text-red-400">⚠ {url}</span>
          ) : (
            <span className="text-gray-500">{url}</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);
  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">DASHBOARD</span>
        </div>
        {!FLEET_TABS.has(activeTab) && (
          <ConnectionBar url={wsUrl} setUrl={setWsUrl} connected={connected} error={error} />
        )}
      </header>

      {/* ── Tab Navigation ── */}
      <nav className="bg-[#070712] border-b border-cyan-950 shrink-0 overflow-x-auto">
        <div className="flex min-w-max">
          {TAB_GROUPS.map((group, gi) => (
            <div key={group.label} className="flex items-stretch">
              {gi > 0 && (
                <div className="flex items-center px-1">
                  <div className="w-px h-4 bg-cyan-950" />
                </div>
              )}
              <div className="flex items-center px-1.5 shrink-0">
                <span className={`text-xs font-bold tracking-widest ${group.color} opacity-60`}>
                  {group.label}
                </span>
              </div>
              {group.tabs.map((tab) => (
                <button
                  key={tab.id}
                  onClick={() => setActiveTab(tab.id)}
                  className={`px-3 py-2.5 text-xs font-bold tracking-wider 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-600 hover:text-gray-300 hover:border-gray-700'
                  }`}
                >
                  {tab.label.toUpperCase()}
                </button>
              ))}
            </div>
          ))}
        </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} />}

        {activeTab === 'imu'     && <ImuPanel    subscribe={subscribe} />}
        {activeTab === 'battery' && <BatteryPanel subscribe={subscribe} />}
        {activeTab === 'motors'  && <MotorPanel   subscribe={subscribe} />}
        {activeTab === 'map'     && <MapViewer    subscribe={subscribe} />}
        {activeTab === 'control' && <ControlMode  subscribe={subscribe} />}
        {activeTab === 'health'  && <SystemHealth subscribe={subscribe} />}

        {activeTab === 'fleet'    && <FleetPanel />}
        {activeTab === 'missions' && <MissionPlanner />}

        {activeTab === 'settings' && <SettingsPanel subscribe={subscribe} callService={callService} connected={connected} wsUrl={wsUrl} />}
      </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">
        {!FLEET_TABS.has(activeTab) ? (
          <>
            <span>rosbridge: <code className="text-gray-600">{wsUrl}</code></span>
            <span className={connected ? 'text-green-700' : 'text-red-900'}>
              {connected ? 'CONNECTED' : 'DISCONNECTED'}
            </span>
          </>
        ) : (
          <span className="text-green-800">FLEET MODE — multi-robot</span>
        )}
      </footer>
    </div>
  );
}