package formtest;

public final class PersonInfo
{
    private String firstName;
    private String lastName;
    private int birthMonth;
    private int birthDay;
    
    /**
     * Creates a person's info with default values that will have
     * to be set individually.
     */
    public PersonInfo()
    {
        setFirstName(null);
        setLastName(null);
        setBirthMonth(-1);
        setBirthDay(-1);
    }

    /**
     * Creates a person's info with values given.
     * @param firstName
     * @param lastName
     * @param birthMonth
     * @param birthDay 
     */
    public PersonInfo(String firstName, String lastName, int birthMonth, int birthDay)
    {
        setFirstName(firstName);
        setLastName(lastName);
        setBirthMonth(birthMonth);
        setBirthDay(birthDay);
    }

    /**
     * Returns the person's first name.
     * @return 
     */
    public String getFirstName()
    {
        return firstName;
    }

    /**
     * Sets the person's first name.  If input is null, value
     * is set to an empty string.
     * @param name 
     */
    public void setFirstName(String name)
    {
        if(name != null)
            this.firstName = name;
        else
            this.firstName = "";
    }

    /**
     * Returns the person's last name.
     * @return 
     */
    public String getLastName()
    {
        return lastName;
    }

    /**
     * Sets the person's last name.  If input is null, value
     * is set to an empty string.
     * @param name 
     */
    public void setLastName(String name)
    {
        if(name != null)
            this.lastName = name;
        else
            this.lastName = "";
    }

    /**
     * Returns the person's birth month.
     * @return 
     */
    public int getBirthMonth()
    {
        return birthMonth;
    }

    /**
     * Sets the birth month of a person.  Performs error
     * checking for values (0, 12].  Sets value to -1 if
     * input is out of bounds.
     * @param month 
     */
    public void setBirthMonth(int month)
    {
        if(month > 0 && month < 13)
            this.birthMonth = month;
        else
            this.birthMonth = -1;
    }

    /**
     * Returns the person's birth day.
     * @return int
     */
    public int getBirthDay()
    {
        return birthDay;
    }

    /**
     * Sets the birth day of a person. Performs error checking
     * for values (0, 31].  Sets value to -1 if
     * input is out of bounds.
     * @param day 
     */
    public void setBirthDay(int day)
    {
        if(day > 0 && day < 32)
            this.birthDay = day;
        else
            this.birthDay = -1;
    }
    
    @Override
    public String toString()
    {
        return String.format("Person: %s, %s was born on %d/%d", getLastName(), getFirstName(), getBirthMonth(), getBirthDay());
    }
}