/// <summary>
        /// Method used for confirm chosen action by Contractor.
        /// </summary>
        /// <param name="user"></param>
        /// <param name="choosenAction"></param>
        /// <returns></returns>
        public static bool CompleteActionForContractor(User user, char choosenAction)
        {
            Contractor contractor = (Contractor)user;

            ShowOffers showOffers = MainMenuHelper.ShowWorkOffers;

            switch (choosenAction)
            {
            case '1':
            {
                showOffers();
            }
            break;

            case '2':
            {
                Console.WriteLine("Please, enter work offer name:");
                string enteredWorkOfferName = Console.ReadLine();

                var workOffer = WorkOffersStorage.GetWorkOffer(enteredWorkOfferName);

                contractor.CreateApplicationToWorkOffer(workOffer);
            }
            break;

            case '3':
            {
                var workOffers = WorkOffersStorage.GetWorkOffers(contractor);

                foreach (WorkOffer offer in workOffers)
                {
                    offer.ShowWorkOfferInformation();
                }
            }
            break;

            case '4':
            {
                Console.WriteLine("Please, enter work offer name:");
                string enteredWorkOfferName = Console.ReadLine();

                var workOffer = WorkOffersStorage.GetWorkOffer(enteredWorkOfferName);

                contractor.CheckUpConstructionWork(workOffer);
            }
            break;

            case '5':
            {
                Authentication.LogOut();
                return(Constants.IfUserWantLogOut);
            }
            }

            return(Constants.IfUserWantContinue);
        }