export function getXRInputSourceByHandedness(renderer, handedness) {
  const session = renderer.xr.getSession();
  if (!session?.inputSources) return null;

  return [...session.inputSources].find((source) => source.handedness === handedness) || null;
}

export function pulseXRInputSource(source, intensity, duration) {
  const gamepad = source?.gamepad;
  if (!gamepad) return false;

  const actuator = gamepad.hapticActuators?.[0];
  if (actuator) {
    if (typeof actuator.playEffect === 'function') {
      actuator.playEffect('dual-rumble', {
        startDelay: 0,
        duration,
        weakMagnitude: intensity,
        strongMagnitude: intensity,
      }).catch(() => {});
      return true;
    }

    if (typeof actuator.pulse === 'function') {
      actuator.pulse(intensity, duration).catch?.(() => {});
      return true;
    }
  }

  const vibrationActuator = gamepad.vibrationActuator;
  if (vibrationActuator?.playEffect) {
    vibrationActuator.playEffect('dual-rumble', {
      startDelay: 0,
      duration,
      weakMagnitude: intensity,
      strongMagnitude: intensity,
    }).catch(() => {});
    return true;
  }

  if (vibrationActuator?.pulse) {
    vibrationActuator.pulse(intensity, duration).catch?.(() => {});
    return true;
  }

  return false;
}

export function pulseXRController(renderer, controllerIndex, intensity, duration) {
  const handedness = controllerIndex === 0 ? 'left' : 'right';
  const source = getXRInputSourceByHandedness(renderer, handedness);
  return pulseXRInputSource(source, intensity, duration);
}