/* University of Alberta (http://www.cs.ualberta.ca/) */
/* CMPUT114(2003-2004, Fall) http://www-csfy.cs.ualberta.ca/~c114/F03 */

//
//  Bus.java
//  CMPUT 114
//
//  Created by Vadim Bulitko on Mon Sep 15 2003.
//  Copyright (c) 2003 Vadim Bulitko. All rights reserved.
//

class Bus {

    // --------------------- Class variables ----------------------------
    // Garage capacity
    private static final int garageCapacity = 2;

    // Number of buses in the garage
    private static int numInGarage = 0;

    // ---------------------- Instance variables -------------------------
    // Status of the bus
    private boolean inGarage;

    // ---------------------- Methods ------------------------------------

    // Creates a bus
    public Bus(boolean initialStatus) {
        inGarage = initialStatus;
        if (initialStatus) {
            numInGarage++;
        }
    }

    // Tells the garage capacity
    public static int askGarageCapacity() {
        return garageCapacity;
    }

    // Tells the current number of buses in the garage
    public static int askNumberInGarage() {
        return numInGarage;
    }

    // Orders the bus to leave the garage
    public void leaveGarage() {
        if (inGarage) {
            numInGarage = numInGarage - 1;
            inGarage = false;
            System.out.println("Leave the garage, Aye!");
        } else {
            System.out.println("Unable to leave:" 
                               + " already outside of the garage...");
        }
    }

    // Directs the bus to return to the garage
    public void returnToGarage() {
        if (!inGarage) {
            if (numInGarage < garageCapacity) {
                numInGarage = numInGarage + 1;
                inGarage = true;
                System.out.println("Return to the garage, Aye!");
            } else {
                System.out.println("Unable to return:" 
                                   + " the garage is full...");
            }
        } else {
            System.out.println("Unable to return:" 
                               + " already inside the garage...");
        }
    }
    
    // Checks the status of the bus
    public boolean checkStatus() {
        return inGarage;
    }
}