'use strict';
  
  const locks = require('locks');
  
  const mutexWaitForOK = locks.createMutex();
  const mutexCommand = locks.createMutex();
  
  function setLockWaitForOK() {
      return new Promise((resolve) => {
          mutexWaitForOK.lock(() => {
              resolve(true);
          });
      });
  }
  
  function releaseLockWaitForOK() {
      try {
          mutexWaitForOK.unlock();
      } catch (e) {
          //
      }
  }
  
  function setLockWaitForCommand() {
      return new Promise((resolve) => {
          mutexCommand.lock(() => {
              resolve(true);
          });
      });
  }
  
  function releaseLockWaitForCommand() {
      setTimeout(() => {
          try {
              mutexCommand.unlock();
          } catch (e) {
              //
          }
      }, 1500);
  }
  
  exports.setLockWaitForOK = setLockWaitForOK;
  exports.releaseLockWaitForOK = releaseLockWaitForOK;
  
  exports.setLockWaitForCommand = setLockWaitForCommand;
  exports.releaseLockWaitForCommand = releaseLockWaitForCommand;