using System;
using System.Collections.Generic;
using System.Text;

namespace perfectbeanprop
{
    public class Person
    {

        public Person(
            String firstName,
            String lastName)
        {
            this.setFirstName(firstName);
            this.setLastName(lastName);
            this.setCountryOfBirth(DEFAULT_COUNTRY_OF_BIRTH);
        }

        public Person(
            String firstName,
            String middleName,
            String lastName,
            String countryOfBirth)
        {
            this.setFirstName(firstName);
            this.setMiddleName(middleName);
            this.setLastName(lastName);
            this.setCountryOfBirth(countryOfBirth);
        }

        //
        // FirstName
        //
		// Mandatory property.
		//

        private String m_firstName = null;

        public String getFirstName()
        {
            if (m_firstName == null)
            {
                throw new Exception("firstName not set");
            }
            return m_firstName;
        }

        public void setFirstName(String firstName)
        {
            if (firstName == null)
            {
                throw new ArgumentNullException("firstName cannot be null");
            }
            if("".Equals(firstName))
            {
                throw new ArgumentException("firstName cannot be blank");
            }
            m_firstName = firstName;
        }

        //
        // MiddleName
        //
		// Optional property.
		//

        private String m_middleName = null;

        public String getMiddleName()
        {
            return m_middleName;
        }

        public void setMiddleName(String middleName)
        {
            m_middleName = middleName;
        }

        public Boolean hasMiddleName()
        {
            return m_middleName != null;
        }

        public void clearMiddleName()
        {
            m_middleName = null;
        }

        //
        // LastName
        //
		// Mandatory property.
		//

        private String m_lastName = null;

        public String getLastName()
        {
            if (m_lastName == null)
            {
                throw new Exception("lastName not set");
            }
            return m_lastName;
        }

        public void setLastName(String lastName)
        {
            if (lastName == null)
            {
                throw new ArgumentNullException("lastName cannot be null");
            }
            if("".Equals(lastName))
            {
                throw new ArgumentException("lastName cannot be blank");
            }
            m_lastName = lastName;
        }

        //
        // CountryOfBirth
        //
		// Mandatory property with default value.
		//

        private static readonly String DEFAULT_COUNTRY_OF_BIRTH = "Thailand";

        private String m_countryOfBirth = null;

        public String getCountryOfBirth()
        {
            if (m_countryOfBirth == null)
            {
                throw new Exception("countryOfBirth not set");
            }
            return m_countryOfBirth;
        }

        public void setCountryOfBirth(String countryOfBirth)
        {
            if (countryOfBirth == null)
            {
                throw new ArgumentNullException("countryOfBirth cannot be null");
            }
            if ("".Equals(countryOfBirth))
            {
                throw new ArgumentException("countryOfBirth cannot be blank");
            }
            m_countryOfBirth = countryOfBirth;
        }

        public Boolean hasCountryOfBirth()
        {
            return m_countryOfBirth != null;
        }

        public void clearCountryOfBirth()
        {
            m_countryOfBirth = null;
        }

    }

}