/**
 * This class represents a bank account.
 * @author cs161
 * @version sp18
 */
public class BankAccount{
    // Instance Variables
    private final double INTEREST_RATE = .014;
    private String ownersName;
    private String accountNumber;
    private double balance;
    private String password;

    
    /**
     * Initializes a bank account with given information and 
     * zero balance.
     * @param name The account owner's name
     * @param pwd The account password
     * @param id The account identification number
     */
    public BankAccount(String name, String pwd, String id){
        ownersName = name;
        accountNumber = id;
        balance = 0.0;
        password = pwd;
    }
    
    /**
     * Withdraws a specified amount of money from the account
     * @param moneyOut The amount to be withdrawn
     * @return The updated balance
     */
    public double withdraw(double moneyOut){
        if(balance >= moneyOut){
            balance = balance - moneyOut;            
        }
        return balance;
    }
    
    /**
     * Deposits a specified amount of money into the account
     * @param moneyIn The amount the be deposited
     * @return The updated balance
     */
    public double deposit(double moneyIn){
        balance = balance + moneyIn;
        return balance;
    }
    
    /**
     * Returns the account id
     * @return The account id
     */
    public String getAccountId(){
        return accountNumber;
    }
    /**
     * Returns the current balance
     * @return The current balance
     */
    public double checkBalance(){
        return balance;
    }
    
    /**
     * Changes the password for the account
     * @param oldPwd The old password for the account
     * @param newPwd The new password for the account
     * @return true or false to indicate success or failure
     */
    public boolean changePassword(String oldPwd, String newPwd){
        // The owner must supply the old password in order to change
        // to the new password
        if(password.equals(oldPwd)){
            password = newPwd;
            return true;
        }
        return false;
    }
    
    /**
     * Transfers money from this account to other account
     * @param Amount to be transfered
     * @param other The other account
     */
    public void transfer(double amount, BankAccount other){
        this.withdraw(amount);
        other.deposit(amount);
    }
    
    /**
     * Returns a string summarizing the state of the account
     * @return The state of the account
     */
    public String toString(){
        String stateOfAccount = "[name = " + ownersName;
        stateOfAccount += ", account number =" + accountNumber;
        stateOfAccount += ", balance = " + balance + "]";        
        return stateOfAccount;
    }    
}