/*! File Type parser
 * When a file type extension is found, the equivalent name is
 * prefixed into the parsed data, so sorting occurs in groups
 */
/*global jQuery: false */
;(function($){
"use strict";

	var ts = $.tablesorter,
	// basic list from http://en.wikipedia.org/wiki/List_of_file_formats
	// To add a custom equivalent, define:
	// $.tablesorter.utility.fileTypes.equivalents['xx'] = "A|B|C";
	fileTypes = ts.utility.fileTypes = {
		// divides filetype extensions in the equivalent list below
		separator : '|',
		equivalents : {
			"3D Image"     : "3dm|3ds|dwg|max|obj",
			"Audio"        : "aif|aac|ape|flac|la|m4a|mid|midi|mp2|mp3|ogg|ra|raw|rm|wav|wma",
			"Compressed"   : "7z|bin|cab|cbr|gz|gzip|iso|lha|lz|rar|tar|tgz|zip|zipx|zoo",
			"Database"     : "csv|dat|db|dbf|json|ldb|mdb|myd|pdb|sql|tsv|wdb|wmdb|xlr|xls|xlsx|xml",
			"Development"  : "asm|c|class|cls|cpp|cc|cs|cxx|cbp|cs|dba|fla|h|java|lua|pl|py|pyc|pyo|sh|sln|r|rb|vb",
			"Document"     : "doc|docx|odt|ott|pages|pdf|rtf|tex|wpd|wps|wrd|wri",
			"Executable"   : "apk|app|com|exe|gadget|lnk|msi",
			"Fonts"        : "eot|fnt|fon|otf|ttf|woff",
			"Icons"        : "ani|cur|icns|ico",
			"Images"       : "bmp|gif|jpg|jpeg|jpe|jp2|pic|png|psd|tga|tif|tiff|wmf|webp",
			"Presentation" : "pps|ppt",
			"Published"    : "chp|epub|lit|pub|ppp|fm|mobi",
			"Script"       : "as|bat|cgi|cmd|jar|js|lua|scpt|scptd|sh|vbs|vb|wsf",
			"Styles"       : "css|less|sass",
			"Text"         : "info|log|md|markdown|nfo|tex|text|txt",
			"Vectors"      : "awg|ai|eps|cdr|ps|svg",
			"Video"        : "asf|avi|flv|m4v|mkv|mov|mp4|mpe|mpeg|mpg|ogg|rm|rv|swf|vob|wmv",
			"Web"          : "asp|aspx|cer|cfm|htm|html|php|url|xhtml"
		}
	};

	ts.parser.add({
		id: 'filetype',
		is: function() {
			return false;
		},
		format: function(s, table) {
			var t,
				c = table.config,
				wo = c.widgetOptions,
				i = s.lastIndexOf('.'),
				sep = fileTypes.separator,
				m = fileTypes.matching,
				types = fileTypes.equivalents;
			if (!m) {
				// make a string to "quick" match the existing equivalents
				var t = [];
				$.each(types, function(i,v){
					t.push(v);
				});
				m = fileTypes.matching = sep + t.join(sep) + sep;
			}
			if (i >= 0) {
				t = sep + s.substring(i + 1, s.length) + sep;
				if (m.indexOf(t) >= 0) {
					for (i in types) {
						if ((sep + types[i] + sep).indexOf(t) >= 0) {
							return i + (wo.group_separator ? wo.group_separator : '-') + s;
						}
					}
				}
			}
			return s;
		},
		type: 'text'
	});

})(jQuery);
