/* 
 * 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 chromesthesia2;


import chromesthesia2.Pitch;
import painter.SPainter;
import javax.swing.*;
import java.util.Scanner;

public class Chromesthesia {
    //infrastructure 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();
        }
    }

    public Chromesthesia(){
        interpreter();
    }

    //featured variables

    private static SPainter miro;
    private static Pitch[] pitches;

    //the interpreter

    public static void interpreter(){
        String previousState = " ";

        initialization(); //miro and pitchers

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

            if(input.equalsIgnoreCase("again")){
                if (previousState != " "){
                    try{
                        playMelody(previousState,pitches);
                    }catch (Exception ex) {
                        showErrorMessage(ex.toString());
                    }
                } else{
                    showErrorMessage("There is no previous state");
                }
            }
            else if(input.equalsIgnoreCase("EXIT")){
                break;
            } else {
                previousState = input;
                try{
                    playMelody(input,pitches);
                }catch (Exception ex){
                    showErrorMessage(ex.toString());
                }
            }
        }
        cleanup(); //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();
            String pitchName;
            String duration = " ";
            if( token.indexOf(",") < 0){
                pitchName = token.substring(0,1);
                duration = token.substring(1);
            } else {
                pitchName = token.substring(0,2);
                duration = token.substring(2);
            }
            if (duration.length()==0) {
                duration = "1";
            }
            Pitch pitch = find(pitchName,pitches);
            pitch.play(duration);
        }
    }
      // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING
      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 input1 = JOptionPane.showInputDialog(null,label);
        miro.setVisible(true);
        if ( input1 == null ) { input1 = ""; }
        return input1;
    }

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