// Independent cleanup attempts: a broken optional recorder or audio node must
// never keep the camera/microphone open or prevent the remaining owners closing.
const attempt=operation=>{try{operation();}catch{/* Continue releasing other owners. */}};

export function stopTracks(stream) {
    if(!stream)return;
    for(const track of stream.getTracks())attempt(()=>{track.onended=null;track.stop();});
}

export function releaseCapture(run,preview,finishRecording) {
    if(run.released)return;
    run.released=true;
    attempt(()=>stopTracks(run.stream));
    for(const timer of [run.timer,run.setupTimer,run.signalTimer])clearTimeout(timer);
    clearInterval(run.updateTimer);
    if(run.callback!=null)attempt(()=>preview.cancelVideoFrameCallback(run.callback));
    if(run.recording)attempt(finishRecording);
    if(run.node) {
        run.node.onprocessorerror=null;
        run.node.port.onmessage=null;
        attempt(()=>run.node.port.postMessage('stop'));
        attempt(()=>run.node.disconnect());
    }
    attempt(()=>run.source?.disconnect());
    // A rejected or unresolved AudioContext.close never postpones track release.
    attempt(()=>run.context?.close().catch(()=>{}));
}