using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading;

using assignment2014_09_22;

​

namespace assignment2014_09_22

{

    public class Program

    {

      public static void Main(string[] args)

        {

            Queue<Customer> myQueue = new Queue<Customer >();

            myQueue.Enqueue(new Customer ("Vithu "," Raja"));

            myQueue.Enqueue(new Customer ("Hasan "," Umbra"));

            myQueue.Enqueue(new Customer( "Diana "," mohan"));

            myQueue.Enqueue(new Customer( "Paul "," thakkar"));

            myQueue.Enqueue(new Customer ("Bill ","  Gates"));

            Table tb = new Table();

​

            while (myQueue.Count > 0)

            {

                Customer cus = myQueue.Dequeue();

                cus.CustomerEvent += OnMealChange;

                tb.TableEvent += cus.HandleOpenTable;

                tb.OnTableOpen();

                while (cus.meal != Customer.Meals.done)

                {

                    Thread.Sleep(500);

                    cus.MenuChange();

                }

                tb.TableEvent -= cus.HandleOpenTable;

​

            }

            Console.WriteLine("Table is full");

            Console.ReadLine();

        }

​

    public  static void OnMealChange(object sender, CustomerEventArgs e)

    {

         Console.WriteLine ("{0}{1} is having {2}",e.cus.FirstName ,e.cus.LastName ,e.cus.meal);

    }

  }   

     public  class Customer

    {

         public enum Meals { none, appetizer, main, desert, done }   

         public string FirstName

         {

             get;

             set;

         }

        public string LastName

        {

            get;

            set;             

        }

        public Meals meal

        {

            get;

            set;

        }

        public EventHandler<CustomerEventArgs>CustomerEvent;

        public Customer (string firstName,string lastName)

        {

            this.FirstName  = firstName;

            this.LastName  = lastName;

            this.meal=Meals.none;  

​

        }

​

        public void HandleOpenTable(object sender, TableInfoEventsArgs e)

        {

            Console.WriteLine("{0}{1} got a table ", this.FirstName, this.LastName);

        }

        public void MenuChange( )

        {

             EventHandler<CustomerEventArgs>CMealInfo= CustomerEvent;

            switch (this.meal)

            {

                case Meals.none:

                   this.meal=Meals.appetizer ;

                    break;

                case Meals.appetizer :

                    this.meal =Meals.main ;

                     break;

                case Meals.main:

                    this.meal =Meals.desert ;

                     break;

                case Meals.desert:

                   this.meal  =Meals.done;

                    break;  

        }

            if(CMealInfo !=null )

            {

                CMealInfo(this,new CustomerEventArgs(this));

​

            }

        }

  }

         public class CustomerEventArgs:EventArgs 

         {

             public Customer cus{get; private set;}

             public CustomerEventArgs(Customer cus)

             {

                 this.cus=cus;

             }

         }

         public class Table

         {

             public EventHandler<TableInfoEventsArgs> TableEvent;

             public void OnTableOpen()

             {

                 Console.WriteLine("\nTable Open ");

                 Console.WriteLine("----------");

                 EventHandler<TableInfoEventsArgs> MyHandler = TableEvent;

                 if (MyHandler != null)

                 {

                     MyHandler(this, new TableInfoEventsArgs(this));

                 }

             }

         }    

    }

     public class TableInfoEventsArgs:EventArgs 

    {

         public Table tb{get;set;}

     public TableInfoEventsArgs (Table tb)

     {

         this.tb=tb;

     }

    }

​

​

​

​