/**

* js/pianoroll.js

*

* pianoroll basic component

*

*/

'use strict';

var PIXI = require('pixi');

var randomColor = require('randomColor');

function PianoRoll(parentContainer, xInit, yInit, height, linesDown, pixelsPerSecond, width, noteColors, colorsReg, lineColor, lineInterval, offsetMusic, noteHeight, horizontalView){

    var _this = this;

    this.container = new PIXI.DisplayObjectContainer();

    this.container.position.x = xInit;

    this.container.position.y = yInit;

    if (!horizontalView){

    	this.container.width = width;

    }

    parentContainer.addChild(this.container);

    this.linesDown = linesDown;

    this.height = height;

    this.pixelsPerSecond = pixelsPerSecond;

    this.width = width;

    this.noteColors = noteColors;

    this.colorsReg = colorsReg || {};

    this.lineColor = lineColor;

    this.lineInterval = lineInterval;

    this.offsetMusic = offsetMusic || 0;

    this.noteHeight = noteHeight;

    this.addNote = function(note, startTime, duration, velocity, canal){

        var begin = (this.offsetMusic + startTime) * this.pixelsPerSecond / 1000;

        if (horizontalView){

	        var width = duration * this.pixelsPerSecond / 1000;

	        if((begin+width) <  (Math.abs(this.container.x) - this.width)) {

	            // not visible. do nothing

	            return;

	        }

        } else {

        	var height = duration * this.pixelsPerSecond / 1000;

	        if((begin+height) <  (Math.abs(this.container.y) - this.height)) {

	            // not visible. do nothing

	            return;

	        }

        }

        // We draw the rectangle

        var graphics = new PIXI.Graphics();

        var color = this.colorsReg[canal];

        if(typeof(color) === 'undefined') {

            var colorsRegSize = Object.keys(this.colorsReg).length;

            if(colorsRegSize < this.noteColors.length) {

                color = this.colorsReg[canal] = this.noteColors[colorsRegSize];

            }

            else {

                color = this.colorsReg[canal] = parseInt(randomColor({ luminosity: 'light', hue: 'random', format:'hex'}).replace(/^#/, ''), 16);

            }

        }

        graphics.beginFill(color, (velocity / 128));

        if (horizontalView){

	        var y = (128-note) * this.height / 128; // (128-note) because y = 0 is for note = 128 and y = 128 for note = 0

	        graphics.drawRect(0, Math.floor(y - (noteHeight/2) + ((this.height / 128)/2)), width, noteHeight);

	        graphics.endFill();

	        graphics.x = begin;

        } else {

        	var x = (128-note) * this.width / 128; // (128-note) because y = 0 is for note = 128 and y = 128 for note = 0

	        graphics.drawRect(Math.floor(x - (noteHeight/2) + ((this.width / 128)/2)), 0, noteHeight, height);

	        graphics.endFill();

	        graphics.y = begin;

        }

        this.container.addChild(graphics);

    };

    this.addLine = function(ts){

        var graphics = new PIXI.Graphics();

        if (horizontalView){

        	var x = -this.container.x;

        	var y = this.linesDown ? this.height - 20 : 0;

        } else {

        	var x = this.linesDown ? 0 : this.width - 20 ;

        	var y = -this.container.y;

        }

        graphics.beginFill(0xFFFF00);

        graphics.lineStyle(1, this.lineColor);

        graphics.moveTo(x, y);

        if (horizontalView){

        	graphics.lineTo(x, y + 20);

        } else {

        	graphics.lineTo(x + 20, y);

        }

        graphics.endFill();

        this.container.addChild(graphics);

        // Add text

        //var totalSec = lineNb * this.lineInterval / 1000;

        var hours = ts.getHours();

        var minutes =ts.getMinutes();

        var seconds = ts.getSeconds();

        var timeStr = (hours < 10 ? '0' + hours : hours) + ':' + (minutes < 10 ? '0' + minutes : minutes) + ':' + (seconds  < 10 ? '0' + seconds : seconds);

        var fontObj = { font: '10pt Arial', fill: '#444444' };

        var t = new PIXI.Text(timeStr, fontObj);

        if (horizontalView){

	        t.x = x + 2;

	        t.y = this.linesDown ? this.height - 15 : 2;

        } else {

	        t.x = this.linesDown ? 2 : this.width - 55;

	        t.y = y + 2;

        }

        this.container.addChild(t);

    };

    this.moveTo = function(diffTime){

    	if (horizontalView){

    		this.container.x = Math.floor(diffTime*this.pixelsPerSecond);

    	} else {

    		this.container.y = Math.floor(diffTime*this.pixelsPerSecond);

    	}

    };

    this.removePassedObjets = function(){

        var nbChilds = _this.container.children.length;

        var i = 0, childIsNowDisplayed = false, childrenToRemove = [];

        while(i<nbChilds && !childIsNowDisplayed){

            var child = _this.container.children[i++];

            if(typeof(child) == 'undefined') {

                continue;

            }

            if (horizontalView){

	            if((child.x + child.width) < (Math.abs(_this.container.x) - _this.width)){

	                childrenToRemove.push(child);

	            }

	            else {

	                childIsNowDisplayed = true;

	            }

            } else {

            	if((child.y + child.height) < (Math.abs(_this.container.y) - _this.height)){

	                childrenToRemove.push(child);

	            }

	            else {

	                childIsNowDisplayed = true;

	            }

            }

        }

        childrenToRemove.forEach(function(child) {

            _this.container.removeChild(child);

        });

    };

    // remove notes each scene width

    //var removeInterval = window.setInterval(this.removePassedObjets, 1000 * sceneWidth / this.pixelsPerSecond );

    if (horizontalView){

    	window.setInterval(this.removePassedObjets, 1000 * this.width / this.pixelsPerSecond );

    } else {

    	window.setInterval(this.removePassedObjets, 1000 * this.height / this.pixelsPerSecond );

    }

}

module.exports = PianoRoll;