// test harness for Evil RObot class
// with demos of methods in main class
public class EvilRobotHarness {

    // print out the given robots, and the leader
    // this is static, so can call from main
    public static void printRobots(EvilRobot r1, EvilRobot r2, EvilRobot r3) {
        System.out.println(r1);
        System.out.println(r2);
        System.out.println(r3);
        System.out.println(EvilRobot.getFearlessLeader());
    }

    // print out the given robots, and the leader
    // this is static, so can call from main
    // overloads above method -- add string param
    public static void printRobots(EvilRobot r1, EvilRobot r2, EvilRobot r3, String msg) {
        System.out.println(msg);
        System.out.println(r1);
        System.out.println(r2);
        System.out.println(r3);
        System.out.println(EvilRobot.getFearlessLeader());
    }


    // print a greeting
    // this is not static, 
    // need instance to call from main
    public void printGreeting() {
        System.out.println("I for one welcome our Evil Robot overlords (version " + EvilRobot.ROBOT_VERSION + ").");
    }

    // test out Evil RObot class
    // also show calling above methods
    public static void main(String[] args) {
        
        // illegal -- this variable is final
        //EvilRobot.ROBOT_VERSION = 3.8;
        
        // to call printGreeting, we need an instance
        EvilRobotHarness harn = new EvilRobotHarness();
        harn.printGreeting();
        
        // create some robots to test
        EvilRobot robot1 = new EvilRobot();
        robot1.setIdNumber(1);
        robot1.setJob("sit around beeping");

        EvilRobot robot2 = new EvilRobot(2, "be shiny");
        EvilRobot robot3 = new EvilRobot(3, "spin in circles");

        System.out.println("---initial robots---");
        
        // static method, so can call by itself
        printRobots(robot1, robot2, robot3);
        // kill off fearless leader
        EvilRobot.setFearlessLeader(null);
        
        // robot behavior 
        robot2.getAJob();
        robot1.getAJob();
        robot3.getAJob();

        // call other version of printRobots
        printRobots(robot1, robot2, robot3, "---updated robots---");
        
        
    }
}