/**

* js/annotsRoll.js

*

* annotsRoll basic component

*

*/

'use strict';

var PIXI = require('pixi');

var _ = require('lodash');

var DEFAULT_ANNOT_COLOR = '#bababa';

var defaultAnnotStyles = {

    'label': { font: '16pt Arial Bold', fill: '#65A954', wordWrap: true},

    'text' : { font: '12pt Arial Regular', fill: '#444444', wordWrap: true},

    'user' : { font: '14pt Arial regular', fill: '#666666' },

};

var defaultOptions = {

    externalRefresh: false,

    defaultColor: DEFAULT_ANNOT_COLOR,

    annotStyles: defaultAnnotStyles,

    ignoreAnnots:false

};

function AnnotsRoll(options) {

//parentContainer, xInit, yInit, width, height, widthRoll, pixelsPerSecond, annotColors

    var _this = this;

    var opts = _(options).defaults(defaultOptions).value();

    this.container = new PIXI.DisplayObjectContainer();

    this.container.x = opts.xInit;

    this.container.y = opts.yInit;

    this.container.width = opts.width;

    this.height = opts.height;

    this.width = opts.width;

    this.widthRoll = opts.widthRoll;

    this.pixelsPerSecond = opts.pixelsPerSecond;

    this.annotColors = opts.annotColors;

    this.startTs = opts.startTs || Date.now();

    this.ignoreAnnots = opts.ignoreAnnots;

    var yInit = opts.yInit;

    var annotStyles = _(opts.annotStyles).defaults(defaultAnnotStyles).value();

    var marginX = 15;

    for(var style in annotStyles) {

    	if (annotStyles[style].wordWrap === true){

    		annotStyles[style].wordWrapWidth = this.widthRoll - marginX;

    	}

    }

    var started = false;

    var ws = opts.ws;

    var externalRefresh = opts.externalRefresh;

    var stageView = opts.stageView;

    var waitInterval;

    var wait = 0;

    stageView.registerComponent(this);

    var isHidden = function(child) {

        // TODO: the origin point is an approximation. Should refine this

        var globalPos = child.toGlobal(new PIXI.Point(0,0));

        return ((globalPos.x + child.width) < 0) || ((globalPos.y + child.height) < 0) ;

    };

    this.addAnnots = function(data) {

        //var title = data.content.category.label;

        //var user = data.content.user;

        //Test cat and color

        //var colorAnnot = 0x65A954;

        var category = data.content.category.label,

            text     = data.content.text,

            user     = data.content.user,

            ts       = Date.parse(data.ts),

            color    = data.content.color || this.getColor(ts, data.content.category.code);

        this.addAnnot(category, text, user, color, ts);

    };

    this.getColor = function(ts, code) {

        var colorsDef;

        _(this.annotColors).eachRight(function(cdef) {

            if(cdef.ts < ts) {

                colorsDef = cdef.colors;

                return false;

            }

        });

        var resColor;

        if(colorsDef) {

            resColor = colorsDef[code];

        }

        if(!resColor) {

            resColor = colorsDef.defaultColor || DEFAULT_ANNOT_COLOR;

        }

        return resColor;

    };

    this.addAnnot = function(category, text, user, color, ts){

        var x = 0;

        var y = (ts-this.startTs) * this.pixelsPerSecond / 1000 + yInit;

        var colorHex = parseInt(color.replace(/^#/, ''), 16);

        if (wait === 0){

	        var graphics = new PIXI.Graphics()

	            .beginFill(colorHex)

	            .drawRect(x, y, 10, 3)

	            .endFill();

	        this.container.addChild(graphics);

	        var textHeight = 0;

	        var catLabel = new PIXI.Text(

	            category,

	            _(annotStyles.label).extend({fill: color}).value()

	        );

	        catLabel.x = x + marginX;

	        catLabel.y = y - 23;

	        this.container.addChild(catLabel);

	        textHeight += (catLabel.height - 23 + 2);

	        if(text) {

	            var catText = new PIXI.Text(text, annotStyles.text);

	            catText.x = x + marginX;

	            catText.y = y + textHeight;

	            this.container.addChild(catText);

	            textHeight += (catText.height + 2);

	        }

	        var catUser = new PIXI.Text(user, annotStyles.user);

	        catUser.x = x + marginX;

	        catUser.y = y + textHeight;

	        this.container.addChild(catUser);

	        textHeight += (catUser.height + 8);

	        if (this.ignoreAnnots === true){

		        wait = textHeight / this.pixelsPerSecond;

		        waitInterval = setInterval(function() {_this.refreshWait();}, 1000);

	        }

        }

        this.addAnnotLine(colorHex, y);

    };

    this.addAnnotLine = function(color, y) {

        var x = this.widthRoll;

        var graphics = new PIXI.Graphics()

            .beginFill(color)

            .drawRect(x, y, this.width - x, 3)

            .endFill();

        this.container.addChild(graphics);

    };

    this.moveTo = function(diffTime){

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

    };

    this.move = this.refresh = function() {

        var diff = (this.startTs - Date.now())/1000;

        this.moveTo(diff);

    };

    this.refreshWait = function(){

    	wait -= 1;

    	if (wait < 0){

    		wait = 0;

    		clearInterval(waitInterval);

    	}

    };

    this.removePassedObjets = function(){

        var childrenToRemove = [];

        _(_this.container.children).forEach(function(child) {

            return typeof(child) === 'undefined' ||

                (isHidden(child) && childrenToRemove.push(child));

        });

        childrenToRemove.forEach(function(child) {

            _this.container.removeChild(child);

        });

    };

    this.init = function() {

        ws.message(function(data) {

            _this.addAnnots(data);

        });

    };

    this.start = function() {

        if(!started) {

            this.startTs = Date.now();

            started = true;

        }

        this.cleanInterval = setInterval(function () { _this.removePassedObjets(); }, 1000 * this.height / this.pixelsPerSecond );

        if(!externalRefresh) {

            this.refreshInterval = setInterval(function() {_this.move();}, 1000/this.framerate);

        }

    };

    this.stop = function() {

        clearInterval(this.cleanInterval);

        if(!externalRefresh) {

            clearInterval(this.refreshInterval);

        }

    };

}

module.exports = {

    AnnotsRoll: AnnotsRoll,

};