var sock = null;
var ellog = null;


function log(m) {
   ellog.innerHTML += m + '\n';
   ellog.scrollTop = ellog.scrollHeight;
};

//Config vars
var sceneWidth = 1000;
var sceneHeight = 128 * 4; // multiple of 128 because of 128 levels in midi signals ->  better look
var sceneBgColor = 0x66FF99;
var manualFramerate = 24;
var pixelsPerSecond = 50; // nb of pixels per second
var lineInterval = 2000; // means line every 2 seconds
var nbLines = -1;
//var speed = 1; // container -x position at each frame. Speed = 1 ~ 100px for 2 seconds
var zeroTime = new Date("2014-10-06T12:16:43.000000Z").getTime();
var noteDict = {};
var drawPianoNotes = [1,0,1,0,1,1,0,1,0,1,0,1];//Do, Do#, Ré, Ré#, Mi, Fa, Fa#, Sol, Sol#, La, La#, Si


//create an new instance of a pixi stage
var stage = new PIXI.Stage(sceneBgColor);

//create a renderer instance.
var renderer = PIXI.autoDetectRenderer(sceneWidth, sceneHeight);

//add the renderer view element to the DOM
document.body.appendChild(renderer.view);

//requestAnimFrame( animate );


//Draw 127 lines
var delta = sceneHeight / 128;
for(var i=1;i<128;i++){
  var graphics = new PIXI.Graphics();
  graphics.beginFill(0xFFFF00);
  graphics.lineStyle(1, 0xAAAAAA);
  var y = delta * i;
  graphics.moveTo(0, y);
  graphics.lineTo(sceneWidth, y);
  graphics.endFill();
  stage.addChild(graphics);
}
//Draw 127 lines
for(var i=0;i<128;i++){
  var graphics = new PIXI.Graphics();
  var color = drawPianoNotes[i%12]==1 ? 0xFFFFFF : 0x000000;
  if(i==60){
      color = 0xFFD700;
  }
  graphics.beginFill(color);
  graphics.lineStyle(1, 0xAAAAAA);
  var y = sceneHeight - delta * (i+1);
  graphics.drawRect(0, y, 20, delta);
  graphics.endFill();
  stage.addChild(graphics);
}

var uberContainer = new PIXI.DisplayObjectContainer();
uberContainer.position.x = Math.floor(sceneWidth*4/5);
uberContainer.position.y = 0;
stage.addChild(uberContainer);


var container = new PIXI.DisplayObjectContainer();
container.position.x = 0;
container.position.y = 0;
uberContainer.addChild(container);

//create a texture from an image path
var texture = PIXI.Texture.fromImage("bunny.png");


/*function animate() {
    requestAnimFrame( animate );
    // just for fun, lets rotate mr rabbit a little
    //bunny.rotation += 0.1;
    container.x -= speed;
    //console.log("container.x = ", container.x);
    // render the stage  
    renderer.render(stage);
}*/

function moveContainer() {
    container.x -= pixelsPerSecond/manualFramerate;
    renderer.render(stage);
}

function addBunny(data){
    var note = data.content[3];
    var velocity = data.content[4];
    if(velocity===0){
        if(note in noteDict){
            // We close the note
            var beginTime = new Date(noteDict[note].ts).getTime();
            var beginDelta = beginTime - zeroTime;
            var durationDelta = new Date(data.ts).getTime() - beginTime;
            var beginX = beginDelta * pixelsPerSecond / 1000;
            var width = durationDelta * pixelsPerSecond / 1000;
            // We draw the rectangle
            var graphics = new PIXI.Graphics();
            graphics.beginFill(0x0000AA, (noteDict[note].velocity / 128));
            var y = (128-note) * sceneHeight / 128; // (128-note) because y = 0 is for note = 128 and y = 128 for note = 0
            graphics.drawRect(beginX, y, width, sceneHeight / 128);
            graphics.endFill();
            container.addChild(graphics);
            delete noteDict[note];
        }
    }
    else{
        noteDict[note] = {ts: data.ts, velocity:velocity};
    }
}

window.onload = function() {

    ellog = document.getElementById('log');

    var wsuri;
    if (window.location.protocol === "file:") {
       wsuri = "ws://127.0.0.1:8090/broadcast";
    } else {
       wsuri = "ws://" + window.location.hostname + ":8090/broadcast";
    }
    if ("WebSocket" in window) {
       sock = new WebSocket(wsuri);
    } else if ("MozWebSocket" in window) {
       sock = new MozWebSocket(wsuri);
    } else {
       log("Browser does not support WebSocket!");
       window.location = "http://autobahn.ws/unsupportedbrowser";
    }

    if (sock) {
       sock.onopen = function() {
          log("Connected to " + wsuri);
       }

       sock.onclose = function(e) {
          log("Connection closed (wasClean = " + e.wasClean + ", code = " + e.code + ", reason = '" + e.reason + "')");
          sock = null;
       }

       sock.onmessage = function(e) {
          log("Got message: " + e.data);
          addBunny(JSON.parse(e.data));
       }
    }
};


function addLine(){
    nbLines++;
    var graphics = new PIXI.Graphics();
    var x = nbLines * (lineInterval/1000) * pixelsPerSecond;
    //console.log("nbLines = ",nbLines, "x = ", x);
    graphics.beginFill(0xFFFF00);
    graphics.lineStyle(1, 0x444444);
    graphics.moveTo(x, 0);
    graphics.lineTo(x, sceneHeight);
    graphics.endFill();
    container.addChild(graphics);
    // Add text
    var totalSec = nbLines * lineInterval / 1000;
    var hours = parseInt( totalSec / 3600 ) % 24;
    var minutes = parseInt( totalSec / 60 ) % 60;
    var seconds = totalSec % 60;
    var timeStr = (hours < 10 ? "0" + hours : hours) + ":" + (minutes < 10 ? "0" + minutes : minutes) + ":" + (seconds  < 10 ? "0" + seconds : seconds);
    var t = new PIXI.Text(timeStr, { font: "10pt Arial", fill: "#444444" });
    t.x = x + 2;
    t.y = sceneHeight - 20;
    container.addChild(t);
}
var moveInterval = window.setInterval(moveContainer, 1000/manualFramerate);
var linesInterval = window.setInterval(addLine, lineInterval);