/**
 * GringottsAccount.
 * 
 * @author John Paxton
 * @version November 7, 2008 
 */

public class GringottsAccount
{
    GringottsAccount (String name, int galleons, int sickles, int knuts)
    {
        this.owner = name;
        this.galleons = galleons;
        this.sickles = sickles;
        this.knuts = knuts;
        
        this.numberOfAccounts++;  // demonstrate the use of a class variable
    }
    
    GringottsAccount (String name)
    {
        owner = name;
        galleons = 0;
        sickles = 0;
        knuts = 0;
        
        this.numberOfAccounts++;  // demonstrate the use of a class variable
    }
    
    /**
     * Convert the instance to a printable representation.
     * 
     * This method replaces the old "print" method and decouples the
     * GringottsAccount class from the System.out class
     * @return a printable representation of a GringottsAccount
     */
    
    public String toString()
    {
        String result;
        result = "--------------------\n";
        result = result + "Account owner: " + owner + "\n";
        result = result + "Galleons: " + galleons + "\n";
        result = result + "Sickles: " + sickles + "\n";
        result = result + "Knuts: " + knuts + "\n";
        return result;
    }
    
    /**
     * Convert the money in the account to knuts.
     * 
     * Precondition: sickles, knuts and galleons all have initial values
     * Postcondition: sickles = 0; galleons = 0; knuts is recalculated
     */
    
    public void convertToKnuts()
    {
        sickles = sickles + SICKLES_IN_A_GALLEON * galleons;
        galleons = 0;
        knuts = knuts + KNUTS_IN_A_SICKLE * sickles;
        sickles = 0;
    }
    
    public void convertToGalleons()
    {
        sickles = sickles + (knuts / KNUTS_IN_A_SICKLE);
        knuts = knuts % KNUTS_IN_A_SICKLE;
        galleons = galleons + (sickles / SICKLES_IN_A_GALLEON);
        sickles = sickles % SICKLES_IN_A_GALLEON;
    }
    
    public String getOwner()
    {
        return owner;
    }
    
    public int getGalleons()
    {
        return galleons;
    }
    
    public int getSickles()
    {
        return sickles;
    }
    
    public int getKnuts()
    {
        return knuts;
    }
    
    public void setGalleons(int galleons)
    {
        this.galleons = galleons;
    }
    
    public void setSickles (int sickles)
    {
        this.sickles = sickles;
    }
    
    public void setKnuts (int knuts)
    {
        this.knuts = knuts;
    }
    
    /**
     * Make a deposit into a Gringott's Account.
     * Precondition: the appropriate instance variables and parameters have values
     * Postcondition: each instance variable is updated by adding the corresponding parameter
     * 
     * @param galleons the number of galleons to add 
     * @param sickles the number of sickles to add
     * @param knuts the numbers to add
     */
    
    public void makeDeposit (int galleons, int sickles, int knuts)
    {
        this.galleons = this.galleons + galleons;
        this.sickles += sickles;
        this.knuts += knuts;
    }
    
    public static final int SICKLES_IN_A_GALLEON = 17;  // class constant or static constant
    public static final int KNUTS_IN_A_SICKLE = 29;
    
    private static int numberOfAccounts = 0;            // class variable or static variable
    
    private String owner;                               // instance variable or non-static variable
    private int galleons;
    private int sickles;
    private int knuts;
}