/** 
 * Heroku-Patterns - v0.2.0 - 2017
 * 
 * , and the web community.
 * Licensed under the  license.
 * 
 * Many thanks to Brad Frost and Dave Olsen for inspiration, encouragement, and advice.
 * 
 **/(function () {
	"use strict";

	var diveSync = require('diveSync'),
	path = require('path'),
	fs = require('fs-extra');

	var media_hunter = function(){

		function findMediaQueries(dir, patternlab){
			patternlab.mediaQueries = [];

			diveSync(dir, function(err, file){
				if(path.extname(file) === '.css'){
					var contents = fs.readFileSync(file, 'utf8');
					var safeContents = contents.replace("\r", " ").replace("\n", " ");
					var matches = safeContents.match(/\((min|max)-width:([ ]+)?(([0-9]{1,5})(\.[0-9]{1,20}|)(px|em))/g);
					for(var i = 0; i < matches.length; i++){
						var breakpoint = matches[i].substring(matches[i].indexOf(':') + 1).trimLeft();
						if(patternlab.mediaQueries.indexOf(breakpoint) === -1){
							patternlab.mediaQueries.push(breakpoint);
						}
					}
				}
			});
			patternlab.mediaQueries.sort(function(a,b){
				var integerPartA = a.match(/(?:\d*\.)?\d+/g);
				var integerPartB = b.match(/(?:\d*\.)?\d+/g);
				return parseInt(a,10) > parseInt(b,10);
			});
		}

		return {
			find_media_queries: function(dir, patternlab){
				findMediaQueries(dir, patternlab);
			}
		};

	};

	module.exports = media_hunter;

}());