import java.util.*;
/**
 * This class implements a technical support system. It is the top-level class in this project. 
 * The support system communicates via text input/output in the text terminal. This class uses
 * an object of class InputReader to read input from the user and an object of class Responder
 * to generates output until the user wants to leave.
 *
 * @author      Muhammad Bagus Istighfar
 * @version     0.1 - 11 November 2020
 */
public class SupportSystem
{
    public InputReader reader;
    public Responder    responder;
    
    /**
     * Creates a technical support system.
     */
    public SupportSystem()
    {
        reader = new InputReader();
        responder = new Responder();
    }
    /**
     * Start the technical support system. This will print a welcome message and enter into a
     * dialog with the user, until the user ends the dialog.
     */
    public void start()
    {
        boolean finished = false;
        
        printWelcome();
        while(!finished)
        {
            HashSet<String> input = reader.getInput();
            if(input.contains("bye"))
            {
                finished = true;
            }
            else
            {
                String response = responder.generateResponse(input);
                System.out.println(response);
            }
        }
        printGoodbye();
    }
    
    /**
     * Print a welcome message to the screen.
     */
    private void printWelcome()
    {
        System.out.println("Selamat datang di ChatSkuy Bot System");
        System.out.println("Yuk share ceritamu, dan mulailah chat");
        System.out.println("Ketik 'bye' untuk mengakhiri bot system\n");
    }
    /**
     * Print a good-bye message to the screen.
     */
    private void printGoodbye()
    {
        System.out.println("Kamu sangat ramah. Semoga harimu menyenangkan!\n");
        System.out.println("^_^ Good Bye ^_^");
    }
}