using System;

using System.Collections.Generic;

public class Item

{

    public override string ToString() 

    {

          return $"{Name},{Price}" ;

    }

    public string Name {get;set;}

    public string Description {get;set;}

    public decimal Price {get;set;}

    public bool IsSold {get;set;}

    public bool IsPaymentDone {get;set;}

    public Vendor Vendor {get;set;}

    public int Stock {get;set;}

}

​

public class Vendor

{

    public override string ToString() 

    {

          return $"{FirstName},{LastName}";

    }

    public string FirstName {get;set;}

    public string LastName {get;set;}

    public decimal Commission {get;set;}

    public decimal PaymentDue {get;set;}

}

public class Store

{

    public string Name{get;set;}

    public string City{get;set;}

    public string ZipCode{get;set;}

    public string Country{get;set;}

    public string Address1{get;set;}

    public string Address2{get;set;}

    public List<Item> Items{get; private set;}

    public List<Vendor> Vendors{get; private set;}

​

    public Store()

    {

        Items=new List<Item>();

        Vendors=new List<Vendor>();

    }

    public void AddVendor(Vendor vendor)

    {

        Vendors.Add(vendor);

    }

    public void AddItem(Item item)

    {

        Items.Add(item);

    }

}

​

public class ConsignmentShop

{

    private Store store{get;set;}

    private List<KeyValuePair<Item,int>> ItemsInShoppingCart{get;set;}

    public ConsignmentShop()

    {

        ItemsInShoppingCart= new List<KeyValuePair<Item,int>>();

        SetupStore();

    }

    private void SetupStore()

    {

        store= new Store { Name = "AK Ahmed Store" };

        this.store.AddVendor(new Vendor{FirstName = "Arjun", LastName = "Gandhi", Commission = 0.2m, PaymentDue = 0});

        this.store.AddVendor(new Vendor{FirstName = "Raja", LastName = "Mani", Commission = 0.3m, PaymentDue = 0});

        this.store.AddItem(new Item{Name = "C# in a Nutshell", Description = "A book from O'Reiley", Price = 50.0m, IsSold = false, IsPaymentDone = false, Vendor = this.store.Vendors[0], Stock = 10});

        this.store.AddItem(new Item{Name = "Apple AirPods", Description = "Headphones from Apple", Price = 250.0m, IsSold = false, IsPaymentDone = false, Vendor = this.store.Vendors[1], Stock = 5});

        this.store.AddItem(new Item{Name = "Samsung Galyx S20+", Description = "Samsung phone", Price = 1200.0m, IsSold = false, IsPaymentDone = false, Vendor = this.store.Vendors[0], Stock = 3});

        this.store.AddItem(new Item{Name = "iMac 2011", Description = "A computer from Apple", Price = 575.0m, IsSold = false, IsPaymentDone = false, Vendor = this.store.Vendors[1], Stock = 2});

        this.store.AddItem(new Item{Name = "AOC AG352UCG", Description = "AOC Ultrawide monitor", Price = 790.0m, IsSold = false, IsPaymentDone = false, Vendor = this.store.Vendors[0], Stock = 5});

    }

    public void ShowMenu()

    {

        Console.WriteLine(store.Name);

        for(int i=0;i<store.Items.Count;i++)

        {

            Console.WriteLine($"{i+1}. {store.Items[i].Name}");

        }

        Console.WriteLine("A - Add item to shoppping cart");

        Console.WriteLine("L - List items in shoppping cart");

        Console.WriteLine("O - Order items in shopping cart");

        Console.WriteLine("X - Exit");

        while(true)

        {

            Console.WriteLine("Please Enter your Option");

            var choice= Console.ReadLine();

            switch(choice)

            {

                case "A":

                    Console.Write("Enter item number, quantity: ");

                    var itemoption= Console.ReadLine();

                    var itemnumber= Convert.ToInt32(itemoption.Split(new []{','})[0])-1;

                    var quantity= Convert.ToInt32(itemoption.Split(new []{','})[1]);

                    if(store.Items[itemnumber].Stock>=quantity)

                    {

                        ItemsInShoppingCart.Add(new KeyValuePair<Item,int>(store.Items[itemnumber],quantity));

                        store.Items[itemnumber].Stock-= quantity;

                    }

                    else

                    {

                        Console.WriteLine($"Sorry! The item {this.store.Items[itemnumber].Name} is out of stock. {this.store.Items[itemnumber].Stock} items remain.");

                    }

                break;

                case "L":

                    Console.WriteLine("Items in ShoppingCart");

                    foreach(var item in ItemsInShoppingCart)

                    {

                        Console.WriteLine($"{item.Key.ToString()} x {item.Value} = {item.Key.Price*item.Value}");

                    }

                break;

                case "O":

                    var TotalAmount= 0m;

                    var StoreProfit= 0m;

                     foreach(var item in ItemsInShoppingCart)

                    {

                        //"{item.Key.ToString()} x {item.Value} = {item.Key.Price*item.Value}");

                         TotalAmount+= item.Key.Price*item.Value;   

                         StoreProfit+= (item.Key.Price*item.Value)*(1-item.Key.Vendor.Commission);

                         item.Key.Vendor.PaymentDue+= item.Key.Price*item.Value*item.Key.Vendor.Commission;

                    }

                    foreach(var vendor in store.Vendors)

                    {

                        Console.WriteLine($"{vendor} gets {vendor.PaymentDue}");

                    }

                    Console.WriteLine($"StoreProfit: {StoreProfit}");

                    Console.WriteLine($"TotalAmount: {TotalAmount}");

​

                break;

                case "X":

                return;

            }

        }

    }

}

public class Program

{

    public static void Main()

    {

        var shop= new ConsignmentShop();

        shop.ShowMenu();

    }

}