Price Calculator

PriceCalulator.cs

 public class ChildInjectionPriceCalculator
        {
            public double Calculate(int injectionSize)
            {
                return 0;
            }
        }

        public class TeenInjectionPriceCalculator
        {
            public double Calculate(int injectionSize)
            {
                switch (injectionSize)
                {
                    case 30:
                        return 13;
                        break;
                    case 50:
                        return 650.0 / 30.0;
                    case 60:
                        return (780.0 / 30.0);
                    default:
                        return 0;
                }
            }
        }

        public class AdultInjectionPriceCalculator
        {
            public double Calculate(int injectionSize)
            {
                switch (injectionSize)
                {
                    case 30:
                        return 13;
                    case 50:
                        return (750.0 / 30.0);
                    case 60:
                        return (900.0 / 30.0);
                    default:
                        return 0;
                }
            }
        }

        public class AgedInjectionPriceCalculator
        {
            public double Calculate(int injectionSize)
            {
                switch (injectionSize)
                {
                    case 30:
                        return 13;
                    case 50:
                        return (600 / 30.0);
                    case 60:
                        return (720 / 30.0);
                    default:
                        return 0;
                }
            }
        }

        public enum AgeGroup
        {
            Child = 1,
            Teen = 2,
            Adult = 3,
            Senior = 4 //TODO change this name
        }

        private AgeGroup CalculateAgeGroup(int age)
        {
            if (age < 12)
                return AgeGroup.Child;

            if (age >= 12 || age <= 18)
                return AgeGroup.Teen;

            if (age >= 19 || age <= 65)
                return AgeGroup.Teen;

            return AgeGroup.Senior;
        }

        public class UserPreference
        {
            public bool IsConsulation { get; set; }

            public bool IsImaging { get; set; }

            public bool IsBloodAnalysis { get; set; }

            public bool IsInjection { get; set; }

            public int InjectionSize { get; set; }
        }

        public class Fee
        {
            public double Consultancy { get; set; }
            public double Imaging { get; set; }

            public double BloodAnalysis { get; set; }

            public double Injection { get; set; }
        }

        public class FeesFactory
        {
            public Fee Initialize(AgeGroup ageGroup, int injectionSize)
            {
                var fee =new Fee();

                switch (ageGroup)
                {
                    case AgeGroup.Child:
                        fee.Consultancy = 25;
                        fee.Imaging = 55;
                        fee.BloodAnalysis = 28;
                        fee.Injection = 0;
                        return fee;


                    case AgeGroup.Teen:
                        fee.Consultancy = 32;
                        fee.Imaging = 65;
                        fee.BloodAnalysis = 32;
                        fee.Injection = new TeenInjectionPriceCalculator().Calculate(injectionSize);
                        return fee;


                    case AgeGroup.Adult:
                        fee.Consultancy = 40;
                        fee.Imaging = 70;
                        fee.BloodAnalysis = 40;
                        fee.Injection = new AdultInjectionPriceCalculator().Calculate(injectionSize);
                         return fee;


                    case AgeGroup.Senior:
                        fee.Consultancy = 30;
                        fee.Imaging = 60;
                        fee.BloodAnalysis = 35;
                        fee.Injection = new AgedInjectionPriceCalculator().Calculate(injectionSize);
                         return fee;

                     default:
                        throw new ArgumentException();
                }

            } 
        }

        public double CalculatePrice()
        {
            Console.WriteLine("Quel est l'age du patient?");
            var client = Convert.ToInt32(Console.ReadLine());

            var ageGroup = CalculateAgeGroup(client);
            var userPrefernce = InitializeUserPrefence();
            var fee = new FeesFactory().Initialize(ageGroup,userPrefernce.InjectionSize);

            if (!userPrefernce.IsImaging)
                fee.Imaging = 0;

            if (!userPrefernce.IsConsulation)
                fee.Consultancy = 0;

            if (!userPrefernce.IsBloodAnalysis)
                fee.Injection = 0;

            if (userPrefernce.IsConsulation || userPrefernce.IsImaging)
            {
                fee.Imaging = fee.Imaging * 0.75;
            }

            var finalAmount = fee.Consultancy + fee.Imaging + fee.BloodAnalysis + fee.Injection;
            var finalAmountWithTaxes = finalAmount * 1.15;

            if (userPrefernce.IsConsulation || userPrefernce.IsBloodAnalysis || userPrefernce.IsInjection)
            {
                finalAmountWithTaxes = finalAmountWithTaxes - 10;
            }

            return finalAmountWithTaxes;
        }

        public UserPreference InitializeUserPrefence()
        {
            var userPreference = new UserPreference();

            Console.WriteLine("La personne a t-elle choisit une consultation?");
            userPreference.IsConsulation = Convert.ToString(Console.ReadLine()).ToLower() != "non";

            Console.WriteLine("La personne a t-elle choisit une image radio?");
            userPreference.IsImaging = Convert.ToString(Console.ReadLine()).ToLower() != "non";

            Console.WriteLine("La personne a t-elle choisit une analyze de sang?");
            userPreference.IsBloodAnalysis = Convert.ToString(Console.ReadLine()).ToLower() != "non";

            Console.WriteLine("La personne a t-elle choisit une injection?");
            userPreference.IsInjection = Convert.ToString(Console.ReadLine()).ToLower() == "oui";//DOUBLE CHECK THIS LOGIC

            if (userPreference.IsInjection)
            {
                Console.WriteLine("Quel est la taille de l'injection? (30 - 50 - 60) ");
                userPreference.InjectionSize = Convert.ToInt32(Console.ReadLine());
            }

            return userPreference;
        }