/**
 * Teleprompter
 *
 * Simple program to scroll a text file vertically, on a blue
 * background.  Intended for use with a partially-silvered
 * mirror, as a teleprompter. 
 *
 * For remote control, uses application iRed Lite to 
 * interface with Mac Remote:
 * http://www.filewell.com/iRedLite/
 *
 * robert.twomey@gmail.com
 *
 */

import oscP5.*;
import netP5.*;

OscP5 oscP5;
NetAddress myRemoteLocation;

PFont fontA;

int offset=0;
int i=0;
int j=0;

final int NUMCHARS=25;
final int NUMLINES=5;
final int FONT_SIZE=50;
final int LINE_SPACING=60;
final color BG=#FFFFFF;
final color TXT=#000000;

int textX, textY;

// variables controlling text motion and position
boolean pause = false;
int speed=2;
int [] positions;
int n;

String lines[] = { 
  "" };

//ArrayList lines;


void setDrawingPositions() {
  textX=width/2-(NUMCHARS*int(textWidth("x"))/2);
  textY=height/2-NUMLINES*LINE_SPACING/2;
  println(textX+" "+textY);
};


void setup() 
{
  //size(screen.width, screen.height);
  size(740, 480);

  background(BG);
  smooth();
  // Load the font. Fonts must be placed within the data 
  // directory of your sketch. A font must first be created
  // using the 'Create Font...' option in the Tools menu.
  // Uncomment the following two lines to see the available fonts 
  //String[] fontList = PFont.list();
  //println(fontList);

  textAlign(LEFT);
  fontA = createFont("Helvetica-Bold", 255);
  fill(TXT);
  textFont(fontA, FONT_SIZE);

  setDrawingPositions();

  /* start oscP5, listening for incoming messages at port 12000 */
  oscP5 = new OscP5(this, 12000);
  // the port supercollider is listening on 57120
  myRemoteLocation = new NetAddress("127.0.0.1", 57120 );
  
  //loadText("/Users/rtwomey/code/language/nltk2.0/mmpi2_as_questions.txt");
  loadText("/Users/rtwomey/script/script_statements.txt");
  //loadText("/Users/rtwomey/script/mmpi2questions.txt");
  //String lines[] = loadStrings("two stroke engine2.txt");
  //String lines[] = loadStrings("script.txt");
  //String lines[] = loadStrings("SCIP.txt");
  
  //textMode(SCREEN);
  i=0;
  offset=0;
  j=0;
  pause=true;
  n=0;
  positions = new int[1];
  positions[0]=0;
} 

void draw_prompter() {
  // draw NUMLINES lines of text on screen with current vertical offset

  int rememberSpace;
  int k;
  offset=LINE_SPACING;
  int c;
  int li=i;
  int lj=j;
  for(c=0;c<=NUMLINES;c++)
  {
    if(li < lines[lj].length()-NUMCHARS) {
      k=1;
      rememberSpace=0;
      while(k<NUMCHARS) {
        if(lines[lj].charAt(li+k)==' ') rememberSpace=k;
        k++;  
      };
      if(rememberSpace==0) rememberSpace=k;
      text(lines[lj].substring(li, li+rememberSpace), textX, textY+offset+c*LINE_SPACING);
      li+=rememberSpace+1;
    }
    else {

      //print(li+":"+lines[lj].length()+" ");
      text(lines[lj].substring(li, lines[lj].length()), textX, textY+offset+c*LINE_SPACING);
      break;
//      lj++;  
//      li=0;
    };
  };
  c-=2;
//  fill(0,0,64);
//  noStroke();
//  rect(0, 0, screen.width, textY);
//  rect(0, textY+c*LINE_SPACING, screen.width,screen.height-textY-c*LINE_SPACING);
};

/* incoming osc message are forwarded to the oscEvent method. */
void oscEvent(OscMessage theOscMessage) {
  /* print the address pattern and the typetag of the received OscMessage */
//  println("### received an osc message.");
//  println(" addrpattern: "+theOscMessage.addrPattern());
//  println(" typetag: "+theOscMessage.typetag());

  String addrpat = theOscMessage.addrPattern();
  String strval = theOscMessage.get(0).stringValue();  

  //println(theOscMessage.toString());
  //theOscMessage.print();
  //theOscMessage.printData();

  if (match(addrpat, "/nextquestion")!=null) {

    println("Received: "+strval);
    positions = append(positions, j);
    j=int(random(lines.length/2)*2);//+=2;
    offset=0;
    i=0;
      
    //myPort.write(LF);
  }
}

void keyPressed() {
  
  if (key == CODED) {
    switch(keyCode) {
    case UP:
      speed++;
      break;
    case DOWN:
      speed--;
      break;
    case RIGHT:
      positions = append(positions, j);
      j=int(random(lines.length));//+=2;
      while(lines[j].length()<2){
        j++;
      }
      
      offset=0;
      i=0;
      break;
    case LEFT: 
      if(positions.length>1) {
        j=positions[positions.length-1];
        i=0;
        offset=0;
        positions = shorten(positions);
      } 
      else {
        j=0;
      };
      i=0;
      break;
    default:
      break;
    };
    println(j+", lastj= "+positions[positions.length-1]);
  } 
  else {
    if(key==' ') {
      pause = (pause == true) ? false : true;
    };
  }
}


void draw()
{

  background(BG);
  fill(TXT);
  text("RESPOND TO THE PROMPT:", 30, 60);

  draw_prompter();

  if(pause==false) {
    offset-=speed;
    if(abs(offset)>int(LINE_SPACING)) {
      offset=0;
      if(speed > 0) {
        i+=NUMCHARS;
        if(i>lines[j].length()) {
          j++;
          i=0;
        };
      } 
      else {
        i-=NUMCHARS;
        if(i<0) {
          j--;
          if(j<0)
            j=lines.length-NUMLINES;
          i=0;
        };
      };
    };      
  };

}

void loadText(String filename)
{

  lines = loadStrings(filename);
  if(lines != null){
    println("there are " + lines.length + " lines:");
  } 
  else {
    println("error, no text in file "+filename+". exiting.");
    exit();
  }; 

//  for(int i=0;i<lines.length;i++)  {
//    println(lines[i]);
//    
//  }

  // zero our line counter
  j=0;
}