public int ProvideGarageService(int custID, int serviceID)
        {
            Debug.WriteLine("Looking for customer with id " + custID + " in repo from facade");
            ICustomer customer = customerRepository.GetCustomer(custID);

            if (customer == null)
            {
                Console.WriteLine("Customer with entered ID not found");
                return(-1);
            }
            Debug.WriteLine("Looking for garage service with id " + serviceID + " in repo from facade");
            IGarageService service = garageServiceRepository.GetGarageService(serviceID);

            if (service == null)
            {
                Console.WriteLine("Service with entered ID not found");
                return(-1);
            }
            provider.WaitingTimeInDays = 3;
            provider.ProvideGarageService(customer, service);
            string content = "Thank you for using our services. Your waiting time is " +
                             provider.WaitingTimeInDays + " days.";

            mailSender.SendMail(customer.Email, content);
            return(0);
        }
        public int ProvideGarageService(int custID, int serviceID)
        {
            Debug.WriteLine("Looking for customer with id " + custID + " in repo from facade");
            ICustomer customer = customerRepository.GetCustomer(custID);

            if (customer == null)
            {
                Console.WriteLine("Customer with entered ID not found");
                return(-1);
            }
            Debug.WriteLine("Looking for garage service with id " + serviceID + " in repo from facade");
            IGarageService service = garageServiceRepository.GetGarageService(serviceID);

            if (service == null)
            {
                Console.WriteLine("Service with entered ID not found");
                return(-1);
            }
            provider.WaitingTimeInDays = 3;
            provider.ProvideGarageService(customer, service);
            return(0);
        }