import { SettingsProvider } from '../settings/index.js';
import { useSession } from '../context/SessionContext.jsx';
import { useSpectatorMode } from '../hooks/useSpectatorMode.js';
import { useTelemetryFrames } from '../context/TelemetryContext.jsx';
import { useVideoRequests } from '../hooks/useVideoRequests.js';
import VideoTile from '../components/VideoTile.jsx';
import RoomCameraPanel from '../components/RoomCameraPanel.jsx';
import UserListPanel from '../components/UserListPanel.jsx';
import ChatPanel from '../components/ChatPanel.jsx';
import LogPanel from '../components/LogPanel.jsx';
import RoverRoster from '../components/RoverRoster.jsx';

function formatDriverLabel({ roverId, session }) {
  const activeDriverId = session?.activeDrivers?.[roverId] || null;
  const user = (session?.users || []).find((entry) => entry.socketId === activeDriverId);
  const label = user?.nickname || (activeDriverId ? activeDriverId.slice(0, 6) : 'No driver');
  const mode = session?.mode;
  const turnInfo = session?.turnQueues?.[roverId];
  const driverText = mode === 'turns' && turnInfo?.current ? `${label} (turns)` : label;

  return driverText;
}

function RoverSpectatorCard({ rover, frame, videoInfo, audioInfo, session }) {
  const driverLabel = formatDriverLabel({ roverId: rover.id, session });
  return (
    <article className="min-h-[16rem] rounded bg-zinc-900 p-0.5 sm:min-h-[18rem]">
      <div className="min-h-0 overflow-hidden rounded bg-black/20">
        <VideoTile
          sessionInfo={videoInfo}
          audioSessionInfo={audioInfo}
          label={rover.name}
          telemetryFrame={frame}
          batteryConfig={rover.battery}
          hudVariant="spectator"
          driverLabel={driverLabel}
        />
      </div>
    </article>
  );
}

function RoverRow({ roster, frames, videoSources, session }) {
  if (roster.length === 0) {
    return <p className="col-span-full text-slate-400">No rovers registered.</p>;
  }
  return (
    <section className="grid grid-cols-1 gap-0.5 md:grid-cols-2">
      {roster.map((rover) => (
        <RoverSpectatorCard
          key={rover.id}
          rover={rover}
          frame={frames[rover.id]}
          videoInfo={videoSources[rover.id]}
          audioInfo={videoSources[`${rover.id}-audio`]}
          session={session}
        />
      ))}
    </section>
  );
}

function SecondaryRow() {
  return (
    <section className="min-h-0">
      <div className="surface min-h-[14rem] overflow-hidden">
        <RoomCameraPanel
          defaultOrientation="horizontal"
          hideLayoutToggle
          hideHeader
          panelId="spectator-secondary"
        />
      </div>
    </section>
  );
}

function LogsRow({ className = '' }) {
  return (
    <div className={`panel ${className}`}>
      <LogPanel />
    </div>
  );
}

export default function SpectatorApp() {
  const { session } = useSession();
  useSpectatorMode();
  const frames = useTelemetryFrames();
  const roster = session?.roster ?? [];
  const entries = roster.flatMap((rover) => {
    const base = { type: 'rover', id: rover.id, key: rover.id };
    if (rover.media?.audioPublishUrl) {
      return [base, { type: 'rover', id: `${rover.id}-audio`, key: `${rover.id}-audio` }];
    }
    return [base];
  });
  const videoSources = useVideoRequests(entries);

  return (
    <SettingsProvider>
      <div className="min-h-screen bg-black text-slate-100 md:h-screen md:overflow-hidden">
        <main className="grid min-h-screen grid-cols-1 gap-0.5 p-0.5 md:h-full md:min-h-0 md:grid-cols-[minmax(0,1fr)_18rem] lg:grid-cols-[minmax(0,1fr)_20rem]">
          <section className="flex min-h-0 min-w-0 flex-col gap-0.5 md:overflow-y-auto">
            <RoverRow roster={roster} frames={frames} videoSources={videoSources} session={session} />
            <SecondaryRow />
          </section>
          <section className="flex min-h-0 min-w-0 flex-col gap-0.5 md:h-full">
            <div className="panel">
              <RoverRoster roster={roster} title="Rovers" emptyText="No rovers registered." />
            </div>
            <div className="min-h-0 min-w-0 flex-1 overflow-hidden">
              <UserListPanel hideNicknameForm hideHeader fillHeight className="h-full" />
            </div>
            <div className="min-h-0 min-w-0 flex-[1.1] overflow-hidden">
              <ChatPanel hideInput hideSpectatorNotice fillHeight />
            </div>
            <div className="min-h-0 min-w-0">
              <LogsRow className="h-40 overflow-hidden" />
            </div>
          </section>
        </main>
      </div>
    </SettingsProvider>
  );
}