/*
 * Savings.java
 *
 * Created on February 9, 2005, 10:21 PM
 */

package bank;

/**
 *
 * @author Mike
 */
public class Savings extends BankAccount implements Comparable {
    
    private double intYTD = 0;
    
    // interest rate for savings accounts
    public static double intRate = 0.03;
    

    /** Creates a new instance of Savings */
    public Savings() {
        //super();
        System.out.println("In default Savings Constructor");
        intYTD = 0;
    }
    
    /** 
     * Creates a new instance of Savings given a pin and balance
     */
    public Savings(String pin, double bal) {
        super(pin,bal);
        System.out.println("In 2 param Savings Constructor");
        intYTD = 0;
    }
    
    /** 
     * Creates a new instance of Savings given an account number, pin and balance
     */
    public Savings(String acct, String pin, double bal) {
        super(acct,pin,bal);
        intYTD = 0;
    }

    // dont know if we need a constructor that sets intYTD
    
    
    /**
     * pay interest into the calling Account based on the number of days 
     * paying interest for (also, the class knows the interest rate)
     * Return: amount of interest paid
     */
    public double payInterest (int numDays) {
		if (numDays <= 0) {
			System.out.println("ERROR - invalid number of days");
                        // no interest if no days or fewer
			return 0;
		}
                // daily interest rate is annual interest rate reduced by 
                // proportion of days paying for
		double intAmt = balance * (intRate * (numDays / 365.0));
                // update account balance and interest year to date
		balance += intAmt;
                intYTD += intAmt;
		return intAmt;
	}

    
    /**
     * MAR - I think the above is better
     * pay interest into the calling Account based on the number of days 
     * paying interest for (also, the account knows the interest rate)
     * Return: whether interest is paid
     */
    public boolean payInterestfirstVersion (int numDays) {
		if (numDays <= 0) {
			System.out.println("ERROR - invalid number of days");
			return false;
		}
		double intAmt = balance * (intRate * (numDays / 365.0));
                // update account balance and interest year to date
		balance += intAmt;
                intYTD += intAmt;
		return true;
	}
    
    /** 
     * process month end - pay interest into the calling Account 
     * default version - pays based on 30 day months
     * Return: new balance
     */
    public double processMonthEnd() {
        double interest = payInterest(30);
        return getBal();
    }
        
    
    /** 
     * process month end - pay interest into the calling Account 
     * default version - pays based on days in month - passed
     * Return: new balance
     */
    public double processMonthEnd(int days) {
        double interest = payInterest(days);
        return getBal();
    }
        
    
    ///////////////////////////////////////////////////////////////////
    // Inspectors
    ///////////////////////////////////////////////////////////////////
    
    /**
     * report the year to date interest
     */ 
    public double getIntYTD() {
        return intYTD;
    }
    
     /**
      * we need a way of determining the interest rate
      * Static - since interest rate is static - once per class
     */
	public static double getIntRate () {
		return intRate;
	} 
    
        
        /** 
         * Override Account's toString
         */
        public String toString() {
            String res = super.toString();
            res = res +  "  intYTD: " + intYTD;
            return res;
    } 
    ///////////////////////////////////////////////////////////////////
    // Mutators
    ///////////////////////////////////////////////////////////////////
    
        
    /**
     * change the year to date interest
     */ 
    public void setIntYTD(double amt) {
        intYTD = amt;
    }
      
    /**
     * reset the year to date interest back to zero
     */ 
    public void resetIntYTD() {
        intYTD = 0;
    }
    
     /**
      * we need a way of setting the interest rate
      * Static - since interest rate is static - once per class
     */
	public static void setIntRate (double rate) {
		intRate = rate;
	} 
        
        
    /**
     * Compares two savings accounts - needed for sorting - required since implements Comparable interface
     * Don't show until we cover interfaces
     * returns negative if object comparing to is less, zero if object comparing to is equal, 
     * positive if object comparing to is greater
     * MAR - I have made the call that accounts should be compared based on their acct number
     */
    public int compareTo(Object obj) {
        // convert the passed object to an BankAccount\
        BankAccount other = (BankAccount) obj;
        return super.compareTo(obj);
        /*
        // pull out the ids
        Id otherId = other.getAcctID();
        Id firstId = getAcctID();
        // make an object based on the otherId
        Object otherObj = (Object) otherId;
        // do the comparison using Id class's capabilities (compareTo)
        //   and return the result
        return firstId.compareTo(otherObj);
         **/
        
    }
    

}