/**

* js/utils.js

*

* basic tools

*

*/

'use strict';

var PIXI = require('pixi');

var _ = require('lodash');

var moment = require('moment');

function formatTime (ts) {

	return moment(ts).format("HH:mm:ss");

}

function colorToHex(c) {

	var m = /rgba?\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)/.exec(c);

	return m ? '#' + (1 << 24 | m[1] << 16 | m[2] << 8 | m[3]).toString(16).substr(1) : c;

}

function getAnnotCategories(urlCategories, annotCategories) {

    var jsonLoader = new PIXI.JsonLoader(urlCategories, true);

    jsonLoader.on('loaded', function(res) {

        var data = res.target.json;

        while(annotCategories.length > 0) {

        	annotCategories.pop();

        }

        data.sessions.forEach(function(session) {

            var annotCat = {

                ts: session.start_ts === null ? new Date(0) : Date.parse(session.start_ts),

                colors: {}

            }

            var categoriesJson = session.categories_json;

            annotCat.order = categoriesJson.order;

            if (typeof(annotCat.order['default']) === 'undefined'){

            	annotCat.order.push('default');

            }

			var catList = _.clone(categoriesJson.categories);

			while(catList.length > 0) {

				var cat = catList.pop();

				if(cat.code) {

					annotCat.colors[cat.code] = colorToHex(cat.color);

				}

				if(cat.subcategories) {

					catList = catList.concat(cat.subcategories);

				}

			}

            categoriesJson.categories.forEach(function(cat) {

				if(cat.code) {

                	annotCat.colors[cat.code] = colorToHex(cat.color);

				}

            });

            annotCat.defaultColor = categoriesJson.defaultColor || "#536991";

            annotCategories.push(annotCat);

        });

    });

    jsonLoader.load();

}

module.exports = {

	formatTime: formatTime,

	getAnnotCategories: getAnnotCategories,

	colorToHex: colorToHex

};