// CSE 143, Winter 2011, Marty Stepp
// Each BankAccount object represents account information for a bank customer.
// We use private fields and public methods to make sure that the user
// cannot ever have a negative account balance.
// 
// In lecture today we added a printable list of transactions to the account.

import java.util.*;   // for ArrayList

public class BankAccount {
    // private fields -- cannot be directly accessed outside this file
    private int id;
    private double balance;
    private ArrayList<String> transactions;
    
    // Constructs a new account with the given ID and a balance of $0.00.
    public BankAccount(int accountID) {
        id = accountID;
        balance = 0.0;
        transactions = new ArrayList<String>();
    }
    
    // Deposits the given amount of money into the user's account.
    // If the deposit amount is too big (more than $500), or if it is 
    // negative, the method does nothing.
    // Also records a log entry of the deposit to be printed later.
    public void deposit(double money) {
        if (0 <= money) {
            balance = balance + money;
            transactions.add("Deposit of $" + money);
        }
    }
    
    // Withdraws the given amount of money from the user's account.
    // If the user does not have enough money, or if the amount of money
    // is negative, the method does nothing.
    // Also records a log entry of the withdrawal to be printed later.
    public void withdraw(double money) {
        if (0 <= money && money <= balance) {
            balance = balance - money;
            transactions.add("Withdrawal of $" + money);
        }
    }
    
    // Returns the account user's current balance.
    public double getBalance() {
        return balance;
    }
    
    // Returns the account user's ID number.
    public double getID() {
        return id;
    }

    // Prints a log of all transactions (deposits and withdrawals) that have
    // been made on this account, one per line.
    public void printLog() {
    	// TODO: finish printLog method
    	for (int i = 0; i < transactions.size(); i++) {
    		String element = transactions.get(i);
    		System.out.println(element);
    	}
    }
}