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package example.fruitmachine;


class User
{
    private String name;
    private String password;
    private int credit;
    private static final int STARTING_CREDIT = 50;


    User(String name, String password)
    {
        this.name = name;
        this.password = password;
        credit = STARTING_CREDIT;
    }


    String getName()
    {
        return name;
    }


    void setName(String name)
    {
        this.name = name;
    }


    // don't return passwords
    boolean isCorrectPassword(String password)
    {
        return this.password.equalsIgnoreCase(password);
    }


    void setPassword(String password)
    {
        this.password = password;
    }


    // these methods are synchronized to avoid the risks of multi-threaded
    // access to the user
    synchronized int getCredit()
    {
        return credit;
    }


    synchronized void addCredit(int amount)
    {
        credit += amount;
    }


    synchronized boolean deductCredit(int amount)
    {
        boolean enough = false;
        if (credit >= amount)
        {
            enough = true;
            credit -= amount;
        }
        return enough;
    }
}