using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace CSharp.DesignPattern.VisitorPattern

{

    class Program

    {

        static void Main(string[] args)

        {

            ObjectStructure list = new ObjectStructure();

            list.AddEmployee(new FulltimeEmployee("Mike", ));

            list.AddEmployee(new FulltimeEmployee("Tony", ));

            list.AddEmployee(new ParttimeEmployee("Nancen", ));

            list.AddEmployee(new ParttimeEmployee("Bibo", ));

            FinanceVisitor fVisitor = new FinanceVisitor();

            HrVisitor hVisitor = new HrVisitor();

            list.Accept(fVisitor);

            list.Accept(hVisitor);

        }

    }

    class ObjectStructure

    {

        public void Accept(Visitor visitor)

        {

            foreach (IEmployee element in employees)

            {

                element.Accept(visitor);

            }

        }

        public void AddEmployee(IEmployee employee)

        {

            employees.Add(employee);

        }

        public void RemoveEmployee(IEmployee employee)

        {

            employees.Remove(employee);

        }

        private List<IEmployee> employees = new List<IEmployee>();

    }

    class Visitor

    {

        public abstract void Visit(FulltimeEmployee fulltime);

        public abstract void Visit(ParttimeEmployee contract);

    }

    class FinanceVisitor : Visitor

    {

        public void Visit(FulltimeEmployee fulltime)

        {

            Console.Write("The wage of fulltime is ...");

        }

        public void Visit(ParttimeEmployee contract)

        {

            Console.Write("The wage of parttime is ...");

        }

    }

    class HrVisitor : Visitor

    {

        public void Visit(FulltimeEmployee fulltime)

        {

            Console.Write("The worktime of fulltime is ...");

            Console.Write("The overtime of fulltime is ...");

            Console.Write("The timeoff of fulltime is ...");

        }

        public void Visit(ParttimeEmployee contract)

        {

            Console.Write("The worktime of fulltime is ...");

        }

    }

    interface IEmployee

    {

        public void Accept(Visitor visitor)

        { }

        String Name { set; get; }

        Int32 Wage { set; get; }

    }

    class FulltimeEmployee : IEmployee

    {

        public FulltimeEmployee(String name, Int32 wage)

        {

            this._name = name;

            this._wage = wage;

        }

        public void Accept(Visitor visitor)

        {

            visitor.Visit(this);

        }

        public void OperationFulltime()

        { }

        public string Name

        {

            get { return _name; }

            set { _name = value; }

        }

        public int Wage

        {

            get { return _wage; }

            set { _wage = value; }

        }

        private String _name;

        private Int32 _wage;

    }

    class ParttimeEmployee : IEmployee

    {

        public ParttimeEmployee(String name, Int32 wage)

        {

            this._name = name;

            this._wage = wage;

        }

        public void Accept(Visitor visitor)

        {

            visitor.Visit(this);

        }

        public void OperationParttime()

        { }

        public string Name

        {

            get { return _name; }

            set { _name = value; }

        }

        public int Wage

        {

            get { return _wage; }

            set { _wage = value; }

        }

        private String _name;

        private Int32 _wage;

    }

}