Question

The Code need to be in C# programming language. could you please leave some explanation notes as much as you can? Thank you

Create the following classes in the class library with following attributes:
1. Customer
a. id number – customer’s id number
b. name –the name of the customer
c. address – address of the customer (use structs)
d. telephone number – 10-digit phone number
e. orders – collection (array) of orders Assume that there will be no more than 50 orders per customer
2. Order
a. order id – order identification number
b. customer – customer that made order
c. order time – date the order is made
d. delivery time - date when the order is delivered
e. delivery address – address where order is to be delivered (use structs)
f. cost – cost of the order
g. order type – Possible values are: PhoneOrder, RestaurantOrder
h. items – collection (array) of order items in the order. Assume that there will be no more then 50 items in the order
3. OrderItem
a. Menu item – menu item that is in the order
4. MenuItem
a. name –name of the menu item
b. description – description of the menu item
c. base cost – cost of the item without any extras
Implement all 4 classes and provide the following:
1. Appropriate fields
2. Appropriate properties for the fields making sure the integrity and consistency of the
created objects
3. Appropriate constructors (a minimum of 1 in addition to the default constructor)
4. Method GetInfo() that returns a string with the information contained within the
fields of an instance
5. An id number for customer must be unique
6. An order number for order must be unique
7. Add following methods for the classes:
a. Customer
i. CreateOrder – creates new order for the customer. Make sure the
corresponding properties are updated accordingly
b. Order
i. AddOrderItem – adds the menu item to the order. Make sure that the
object state is correct (Hint: cost).
ii. Deliver - updates the delivery time with current time
iii. Delivered – (property) that is true if the order is delivered.
8. You can add any additional methods that may be needed.
9. In the main() method, test that all class members work correctly. User input is not
needed - use the literal constants. Make sure you use at least one object initializer.

Answer 1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp
{

enum order_type { PhoneOrder, RestaurantOrder }
class Customer
{
private static int count = 0;
public int id_number;
string name;
string address;
string telephone;
public List<Order> orders;

public Customer()
{
id_number = ++count; //increamented each time new Customer obj is created
orders = new List<Order>(50);
}

public Customer(string custname, string addr, string tel)
{
id_number = ++count; //increamented each time new Customer obj is created
orders = new List<Order>(50);

name = custname;
address = addr;
telephone = tel;
}

public bool CreateOrder(Order ord)
{
if (orders.Count <= 50){
orders.Add(ord);
return true;
}
else
return false;
}

public string GetInfo()   //return customer info with his all orders
{
string str;
str = "CustId: " + id_number + " " + name + ", " + address + " Phone:" + telephone;
if (orders.Count > 0)
{
str += "\nOrders";
foreach (Order o in orders) //get all orders info of customer
{
str += "\n" + o.GetInfo();  
}
}
return str;
}
}

class Order
{
private static int count = 0;
int order_id;
int customer;
DateTime order_time;
DateTime delivery_time;
string delivery_address;
double cost;
order_type otype;
bool Delivered { get; set; }
List<OrderItem> items;

public Order()
{
order_id = ++count; //increment count each time new Order obj is created
Delivered = false;
cost = 0;
items = new List<OrderItem>();
}

public Order(int custid, string deladdress, order_type type)
{
order_id = ++count; // increment count each time new Order obj is created
Delivered = false;
customer = custid;
order_time = System.DateTime.Now;
delivery_address = deladdress;
otype = type;
cost = 0;
items = new List<OrderItem>();
}

public void AddOrderItem(OrderItem m)
{
items.Add(m);
cost += m.getItemCost(); // add item cost to total order cost
}

public void Deliver()
{
delivery_time = System.DateTime.Now;
Delivered = true;
}
public string GetInfo()       // return order info as a string
{
string str;
str = "OrderNo:" + order_id + " , Ordered: " + order_time.ToString("MM/dd/yyyy hh:mm tt");
  
if (Delivered == false) // if its not deliverd
str += " NOT DELIVERD YET..";
else
str += " Delivered: " + delivery_time.ToString("MM/dd/yyyy hh:mm tt");
if (items.Count > 0)
{
str += "\n\tOrderItems:";
foreach (OrderItem i in items)
{
str += "\n\t" + i.GetInfo();
}
str += "\n--------------------\n";
str += "Deliver to: " + delivery_address + " Total $" + cost + ", OrderType: " + otype.ToString() + "\n\n";
}

return str;
}
}

class OrderItem
{
MenuItem Menu_item_name;

public OrderItem()
{
Menu_item_name = null;
}
public OrderItem(MenuItem m)
{
Menu_item_name = m;
}

public string GetInfo()
{
return Menu_item_name.GetInfo();
}

public double getItemCost()
{
return Menu_item_name.getMenuCost();
}

}

class MenuItem
{
string name;
string description;
double base_cost;

public MenuItem()
{
name = "";
description = "";
base_cost = 0;
}
public MenuItem(string n, string descr, double cost)
{
name = n;
description = descr;
base_cost = cost;
}
  
public string getName()
{
return name;
}

public double getMenuCost()
{
return base_cost;
}

public string GetInfo()
{
string str;
str = name + " " + description + " $" + base_cost; // return menu item info
return str;
}
}

class CustOrder // main driver class
{   

static void Main()
{
MenuItem tea = new MenuItem("Green Tea", "Healthy Grean Tea", 10);
MenuItem coffee = new MenuItem("Coffee", "Healthy Coffee", 20);
OrderItem t = new OrderItem(tea); // create orderItem from menuItem
OrderItem c = new OrderItem(coffee); // create orderItem from menuItem

Customer c1 = new Customer("John","Down Town", "01545687887");
Order tempOrder = new Order(c1.id_number,"my home", order_type.PhoneOrder); //create order
tempOrder.AddOrderItem(t); //add orderItem to order
tempOrder.AddOrderItem(c); //add orderItem to order

c1.CreateOrder(tempOrder); // assign that order to customer

Console.WriteLine(c1.GetInfo()); // display customer's and his order info

c1.orders[0].Deliver(); // deliver customer's order
Console.WriteLine(c1.GetInfo()); // again display customer's and his order info

Customer c2 = new Customer("Smith", "Top Hills", "656778998");
tempOrder = new Order(c2.id_number, "To Office", order_type.RestaurantOrder);
tempOrder.AddOrderItem(t);

c2.CreateOrder(tempOrder);
  
Console.WriteLine(c2.GetInfo());

//c2.orders[0].Deliver(); // remove comment to deliver order
//Console.WriteLine(c2.GetInfo()); // then print again
  

}
}
}