using System;

using System.Collections;

namespace The2Card

​

{

​

    class Program

​

    {

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        static void Main(string[] args)

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        {

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            CouponType[] coupon = new CouponType[3];

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            coupon[0] = new CouponType("10%", 150);

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            coupon[1] = new CouponType("30%", 500);

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            coupon[2] = new CouponType("50%", 1500);

            ArrayList cards = new ArrayList();

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            cards.Add(new Member("1111", "Aaaa", 2019, 7, 500, 30000));

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            cards.Add(new Member("2222", "bbbb", 2020, 3, 300, 7500));

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            cards.Add(new Member("3333", "cccc", 2020, 6, 1750, 180000));

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            cards.Add(new Member("4444", "dddd", 2019, 5, 165, 3800));

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            cards.Add(new Member("5555", "eeee", 2020, 9, 700, 40000));

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            Console.WriteLine("Menu \n1.Collect the points \n2.Exchange the coupon \n3.Create a report");

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            Console.WriteLine("Please select your demand");

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            int choice = Convert.ToInt32(Console.ReadLine());

​

​

            if(choice == 1)

            {

                Console.Write("Please input your card number : ");

                string cardno = Convert.ToString(Console.ReadLine());

                Console.Write("Please input the purchased value : ");

                double p = Convert.ToDouble(Console.ReadLine());

                Console.WriteLine("card number :" + cardno);

                Boolean checker = false;

                foreach (Member mem in cards)

                    {

                    if (mem.CARDNO == cardno)

                    {

                        mem.Collectscore(p);

                        Console.WriteLine("\nThe total points : " + mem.SCORE);

                        checker = true;

                    }   

                }

                if (!checker)

                {

                    Console.Write("The card number is invalid");

                }

            }

​

            else if(choice ==2)

            {

                Console.Write("Please input your card number : ");

                string cardno = Convert.ToString(Console.ReadLine());

                Console.Write("Please input the type of coupon  : ");

                string type = Convert.ToString(Console.ReadLine());

                Console.Write("Please input the amount of coupon you want to exchange : ");

                int n = Convert.ToInt32(Console.ReadLine());

                Boolean checker = false;

                foreach (Member mem in cards)

                    {

                        if (mem.CARDNO == cardno)

                        {

                            Boolean couchecker = false;

                            foreach (CouponType cou in coupon)

                            {

                                if(type == cou.DISCOUNT)

                                {

                                    if((mem.SCORE) >= (n * cou.EXSCORE))

                                    {   

                                        mem.ExchangeCoupon(cou, n);

                                        cou.ExchangeCoupon(n);

                                        Console.Write("Card No: " + mem.CARDNO + "Name: " + mem.NAME + "Score used: " + (n * cou.EXSCORE) + "Remaining Score: " + mem.SCORE );

                                    } else 

                                    {

                                        Console.Write("Not enough score");

                                    }

                                    couchecker = true;

                                }

                            } 

                            if(!couchecker){

                                Console.Write("Invalid coupon type");

                            }

                            checker = true;

                        }

                    }

                if (!checker)

                {

                    Console.Write("The card number is invalid");

                }

​

            else if(choice ==3)

            {

                Console.WriteLine("Menu \n1.Numbers of redeemed coupon for each type \n2.Numbers of redeemed coupon for each type per member \n3.Overall sale");

                Console.WriteLine("Please select your demand");

                int choice2 = Convert.ToInt32(Console.ReadLine());

                if (choice2 == 1)

                {

                    foreach (CouponType cou in coupon)

                    {

                        Console.WriteLine(cou.DISCOUNT +  ": " + cou.EXCHANGENUM + "times");

                    }   

                } else if (choice2 == 2)

                {

                    foreach (CouponType cou in coupon)

                    {

                        Console.WriteLine(cou.DISCOUNT +  ": " + (Convert.ToDouble(cou.EXCHANGENUM)/cards.Count) + "times");

                    }

                } else if (choice2 == 3)

                {

                    double sum = 0;

                    foreach (Member mem in cards)

                    {

                        sum+= mem.SALES;

                    }

                }   

            }

​

        }

​

    }

​

}

​

public class CouponType

    {

        private string discount;

        private double exscore;

        private int exchangednum;

        public CouponType(string d , int exs)

        {

            discount = d;

            exscore = exs;

            exchangednum = 0;

        }

        public string DISCOUNT

        { get { return discount; } }

​

        public double EXSCORE

        { get { return exscore; } }

        public int EXCHANGENUM

        {  get { return exchangednum ; } }

        public void ExchangeCoupon(int times)

        {

            exchangednum += times;

        }      

    }

​

​

public class ExchangedCoupon

    {

        private int exchangednum;

        private CouponType type;

        public ExchangedCoupon(int exn , CouponType t)

        {

            exchangednum = exn;

            type = t;

        }

        public void ExchangeCoupon()

        {

            exchangednum++;

        }

        public int coupon10()

        {

            if (type.DISCOUNT == "10%") return exchangednum;

            else return 0;

        }

        public int coupon30()

        {

            if (type.DISCOUNT == "30%") return exchangednum;

            else return 0;

        }

        public int coupon50()

        {

            if (type.DISCOUNT == "50%") return exchangednum;

            else return 0;

        }

    }

​

public class Member

    {

        private string cardno;

        private string name;

        private int startyear;

        private int startmonth;

        private double storedscore;

        private double sales;

​

​

        public Member(string cn, string n ,int y,  int m ,double sc, double s)

        {

            cardno = cn;

            name = n;

            startyear = y;

            startmonth = m;

            storedscore = sc;

            sales = s;

​

        }

        public string CARDNO

        { get { return cardno; } }

​

        public string NAME

        { get { return name; } }

        public double SCORE

        { get { return storedscore; } }

        public double SALES

        { get { return sales; } }

        public double Collectscore(double purchased)

        {

            if (startyear < 2020 || startmonth < 6)

            {

                double getscore = purchased / 10;

                sales += purchased;

                storedscore += getscore;

                Console.Write("The points you get : " + getscore);

                return storedscore;

            }

            else return -1;

        }

        public void ExchangeCoupon(CouponType cou, int times)

        {

            storedscore -= (cou.EXSCORE * times);

        }

​

        }

    }

​