/* 
 * This program interprets melodic lines given in ABC notation as a 
 * chromesthete might. 
 * 
 * A Pitch class will be defined, and will take center stage in the 
 * processing. 
 * 
 * Interpreting a melody in ABC notation will amount to flashing 
 * colored rectangles for prescribed durations, while sounding 
 * the pitch! The color of the rectangle will correspond to pitch 
 * class. The duration will correspond to the duration of the note. 
 * 
 * For this first version of the program, the duration will be held 
 * constant at 1 beat. 
 * 
 * Three sorts of images will appear on the screen, the chromesthetic 
 * output box, a text input box, and an error message box. Simplicity 
 * of design is rendered by permitting only one box to be on the screen 
 * at a time. 
 * 
 * ABC represents notes in a manner consistent with these examples: 
 * C, D, E, C D E c d e 
 * 
 * Google ABC music representation if you would like to know more about it. 
 */

package Chromesthesia1;


import painter.SPainter;

import javax.swing.*;
import java.util.Scanner;

public class Chromesthesia {
    // INFRA FOR THE PROGRAM -- LAUNCHING A "GRAPHICS" THREAD.
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new ThreadForGUI());
    }

    private static class ThreadForGUI implements Runnable {
        @Override
        public void run() {
            new Chromesthesia();
        }
    }
        //Why they do this for?

        public Chromesthesia(){
            interpreter();
        }

        //FEATURED VARIABLES
        private static SPainter miro;
        private static Pitch[] pitches;

        //THE INTERPRETER (METHOD CALL)
    public static void interpreter(){
        initialization(); //... for the method miro and the method pitches // + to call a while loop

        while(true){
            String input = getInput();

            if (input.equalsIgnoreCase("Exit")){
                break;
            } else{
                try{
                    playMelody(input, pitches);
                } catch (Exception ex) {
                    showErrorMessage(ex.toString());
                }
            }
        }
        cleanup(); //... where the SPainter miro has to go.
    }

    // METHODS PERTAINING TO THE CHROMESTHETIC PITCHES

    private static Pitch[] establishPitches(SPainter painter){
        Pitch[] pitches = new Pitch[21];
        /////////////////////////////////////////////
        Pitch pitchMiddleC = new Pitch("C", painter);
        pitches[0] = pitchMiddleC;

        Pitch pitchLowC = new Pitch("C,", painter);
        pitches[1] = pitchLowC;

        Pitch pitchHighC = new Pitch("c", painter);
        pitches[2] = pitchHighC;
       /////////////////////////////////////////////
        Pitch pitchMiddleD = new Pitch("D", painter);
        pitches[3] = pitchMiddleD;

        Pitch pitchLowD = new Pitch("D,", painter);
        pitches[4] = pitchLowD;

        Pitch pitchHighD = new Pitch("d", painter);
        pitches[5] = pitchHighD;
        ///////////////////////////////////////////
        Pitch pitchMiddleE = new Pitch("E", painter);
        pitches[6] = pitchMiddleE;

        Pitch pitchLowE = new Pitch("E,", painter);
        pitches[7] = pitchLowE;

        Pitch pitchHighE = new Pitch("e", painter);
        pitches[8] = pitchHighE;
        ///////////////////////////////////////////
        Pitch pitchMiddleF = new Pitch("F", painter);
        pitches[9] = pitchMiddleF;

        Pitch pitchLowF = new Pitch("F,", painter);
        pitches[10] = pitchLowF;

        Pitch pitchHighF = new Pitch("f", painter);
        pitches[11] = pitchHighF;
        ///////////////////////////////////////////
        Pitch pitchMiddleG = new Pitch("G", painter);
        pitches[12] = pitchMiddleG;

        Pitch pitchLowG = new Pitch("G,", painter);
        pitches[13] = pitchLowG;

        Pitch pitchHighG = new Pitch("g", painter);
        pitches[14] = pitchHighG;
        ///////////////////////////////////////////
        Pitch pitchMiddleA = new Pitch("A", painter);
        pitches[15] = pitchMiddleA;

        Pitch pitchLowA = new Pitch("A,", painter);
        pitches[16] = pitchLowA;

        Pitch pitchHighA = new Pitch("a", painter);
        pitches[17] = pitchHighA;
        ///////////////////////////////////////////
        Pitch pitchMiddleB = new Pitch("B", painter);
        pitches[18] = pitchMiddleB;

        Pitch pitchLowB = new Pitch("B,", painter);
        pitches[19] = pitchLowB;

        Pitch pitchHighB = new Pitch("b", painter);
        pitches[20] = pitchHighB;
        ///////////////////////////////////////////
        return pitches;
    }

    private static Pitch find (String token, Pitch[] pitches) throws Exception {
        for (int i = 0; i < pitches.length; i = i+1){
            Pitch pitch = pitches[i];
            if (pitch.abcName().equals(token)){
                return pitch;
            }
        }
        throw new Exception("### PITCH" + token + "NOT FOUND");
    }

    private static void display(Pitch[] pitches){
        for (int i = 0; i<pitches.length; i = i+1){
            System.out.println(pitches[i].toString());
        }
    }

    private static void playMelody(String input, Pitch[] pitches) throws Exception{
        Scanner scanner = new Scanner(input);
        while(scanner.hasNext()){
            String token = scanner.next();
            Pitch pitch = find(token,pitches);
            // Q: How is it possible that one variable get defined twice in a program?
            pitch.play("1");
        }
    }
    // METHOD DEFINITIONS: INITIALIZATION, CLEANUP, GETTING 'INPUT', ERROR MESSAGING

    //Q: Why the class and data type is switched?
    static private void showErrorMessage(String message){
        miro.setVisible(false);
        JOptionPane.showMessageDialog(null,message);
    }

    private static void initialization(){
        //ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH
        miro = new SPainter("Chromesthesia", 500, 500);
        miro.setVisible(false);
        miro.setBrushWidth(7);
        //ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS
        pitches = establishPitches(miro);
        display(pitches);
    }

    private static String getInput(){
        miro.setVisible(false);
        String label = "Please enter a melody in ABC notation, or EXIT ...";
        String input = JOptionPane.showInputDialog(null, label);
        // how is it possible that the String variable input can get defined twice in one program?
        miro.setVisible(true);
        if( input == null){
            input = "";
        }
        return input;
        //Any return is definitely needed bc. the String variable input has been defined above in a way of methods
    }

    static private void cleanup(){
        System.exit(0);
    }
    }