using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var shop = new ConsignmentShop();

        shop.ShowMenu();

    }

}

public class Item

{

    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 override string ToString(){

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

    }

}

​

public class Vendor

{

    public string FirstName {get;set;}

    public string LastName {get;set;}

    public decimal Commission {get;set;}

    public decimal PaymentDue {get;set;}

    public override string ToString(){

    return $"{FirstName} {LastName}";

    }

}

​

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 AddItem(Item item){

        Items.Add(item);

    }

    public void AddVendor(Vendor vendor){

        Vendors.Add(vendor);

    }

}

​

public class ConsignmentShop

{

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

    private Store _Store{get; set;}

    public ConsignmentShop()

    {

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

        SetupStore();

    }

        private void SetupStore(){

        this._Store = new Store{Name = "Cool Store"};

        this._Store.AddVendor(new Vendor{FirstName = "Vladimir", LastName = "Gerasimenok", 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 {_Store.Name}");

        for(var 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("Enter your choice");

         var selectedItem = Console.ReadLine();

            switch(selectedItem){

                case "A":

                    Console.WriteLine("Enter item number and quantity");

                    var input = Console.ReadLine();

                    var itemNumber = Convert.ToInt32(input.Split(',')[0]);

                    var quantity  = Convert.ToInt32(input.Split(',')[1]);

                    var item = _Store.Items[itemNumber - 1];

                    if(quantity > item.Stock)

                    {

                        Console.WriteLine("Sorry Item is not available at this moment");

                    }

                    else

                    {

                        ItemsInShoppingCart.Add(new KeyValuePair<Item, int>(item, quantity));

                        item.Stock -= quantity;

                    }

                    break;

                case "L":

                    foreach(var itemsInShoppingCart in ItemsInShoppingCart){

                    Console.WriteLine($"{itemsInShoppingCart.Key} - {itemsInShoppingCart.Key.Price * itemsInShoppingCart.Value}");

                    }

                    break;

                case "O":

                    decimal totalOrder = 0;

                    var vendorProfit = 0;

                    decimal storeProfit = 0;

                foreach(var itemsInShoppingCart in ItemsInShoppingCart){

                   totalOrder = itemsInShoppingCart.Key.Price * itemsInShoppingCart.Value;

                   itemsInShoppingCart.Key.Vendor.PaymentDue = itemsInShoppingCart.Key.Price * itemsInShoppingCart.Value * itemsInShoppingCart.Key.Vendor.Commission;

                   storeProfit =   itemsInShoppingCart.Key.Price * itemsInShoppingCart.Value - vendorProfit;

                }

                    Console.WriteLine($"Total Order {totalOrder}");

                    foreach(var vendor in _Store.Vendors)

                    {

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

                    }

                    Console.WriteLine($"Store Profit {storeProfit}");

                    break;

                case "X":

                    return;

            }

        }

    }

}

​

​

​