xplane-cockpit/web/src/components/AudioPanel.jsx

import React, { useState } from 'react';

// X1000 Audio Panel (Manual S.91). Selects which radios are heard, which COM is
// used to transmit (MIC), marker/DME/ADF Morse audio, intercom, and the Display
// Backup (reversionary) key. Selections are local state with authentic lit keys.
//
// COM MIC is single-select (one transmit radio); the receive/audio keys and the
// Morse keys toggle independently — exactly like the real unit.
export default function AudioPanel({ xp }) {
  const [mic, setMic] = useState('com1');          // transmit radio: com1 | com2 | tel
  const [recv, setRecv] = useState({ com1: true }); // receive/audio selections
  const [hiSens, setHiSens] = useState(false);
  const [crew, setCrew] = useState('pilot');
  const [vol, setVol] = useState(60);

  const r = (k) => !!recv[k];
  const toggle = (k) => setRecv((s) => ({ ...s, [k]: !s[k] }));
  // a single audio key: lit green for MIC (transmit), cyan for receive/Morse
  const Key = ({ k, label, sub, on, kind = 'recv', onClick }) => (
    <button className={`apk ${kind} ${on ? 'on' : ''}`} onClick={onClick}>
      <span className="apk-l">{label}</span>{sub && <span className="apk-s">{sub}</span>}
    </button>
  );

  return (
    <div className="audio-panel">
      <div className="apnl">
        <div className="apnl-title">AUDIO PANEL</div>

        <div className="apnl-grp">
          <div className="apnl-h">COM</div>
          <div className="apnl-row">
            <Key label="COM1 MIC" kind="mic" on={mic === 'com1'} onClick={() => setMic('com1')} />
            <Key label="COM1" on={r('com1')} onClick={() => toggle('com1')} />
          </div>
          <div className="apnl-row">
            <Key label="COM2 MIC" kind="mic" on={mic === 'com2'} onClick={() => setMic('com2')} />
            <Key label="COM2" on={r('com2')} onClick={() => toggle('com2')} />
          </div>
          <div className="apnl-row">
            <Key label="COM 1/2" on={false} onClick={() => setMic((m) => (m === 'com1' ? 'com2' : 'com1'))} />
            <Key label="TEL" kind="mic" on={mic === 'tel'} onClick={() => setMic('tel')} />
          </div>
        </div>

        <div className="apnl-grp">
          <div className="apnl-h">CABIN / SPEAKER</div>
          <div className="apnl-row">
            <Key label="PA" on={r('pa')} onClick={() => toggle('pa')} />
            <Key label="SPKR" on={r('spkr')} onClick={() => toggle('spkr')} />
          </div>
          <div className="apnl-row">
            <Key label="MKR / MUTE" on={r('mkr')} onClick={() => toggle('mkr')} />
            <Key label="HI SENS" on={hiSens} onClick={() => setHiSens((v) => !v)} />
          </div>
        </div>

        <div className="apnl-grp">
          <div className="apnl-h">NAV</div>
          <div className="apnl-row">
            <Key label="DME" on={r('dme')} onClick={() => toggle('dme')} />
            <Key label="NAV1" on={r('nav1')} onClick={() => toggle('nav1')} />
          </div>
          <div className="apnl-row">
            <Key label="ADF" on={r('adf')} onClick={() => toggle('adf')} />
            <Key label="NAV2" on={r('nav2')} onClick={() => toggle('nav2')} />
          </div>
          <div className="apnl-row">
            <Key label="AUX" on={r('aux')} onClick={() => toggle('aux')} />
            <Key label="MAN SQ" on={r('msq')} onClick={() => toggle('msq')} />
          </div>
        </div>

        <div className="apnl-grp">
          <div className="apnl-h">CREW · ICS</div>
          <div className="apnl-row">
            <Key label="PILOT" kind="mic" on={crew === 'pilot'} onClick={() => setCrew('pilot')} />
            <Key label="COPLT" kind="mic" on={crew === 'copilot'} onClick={() => setCrew('copilot')} />
          </div>
          <div className="apnl-vol">
            <span>PILOT INTERCOM VOL</span>
            <input type="range" min="0" max="100" value={vol} onChange={(e) => setVol(+e.target.value)} />
            <b>{vol}</b>
          </div>
        </div>

        <button className="apnl-backup" onClick={() => xp && xp.command && xp.command('mfd_softkey1')} title="Display Backup (reversionary)">
          DISPLAY BACKUP
        </button>
      </div>
    </div>
  );
}