/*
 * jQuery FriendURL plugin 1.5
 *
 * http://www.bulgaria-web-developers.com/blog/2009/03/18/jquery-seo-friendly-url-plugin/
 *
 * Copyright (c) 2009 Dimitar Ivanov
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 */
(function($) {

    var cyrillic = [
        "а", "б", "в", "г", "д", "е", "ё", "ж", "з", "и", "й", "к", "л", "м", "н", "о",
        "п", "р", "с", "т", "у", "ф", "х", "ц", "ч", "ш", "щ", "ъ", "ы", "ь", "э", "ю", "я",
        "А", "Б", "В", "Г", "Д", "Е", "Ё", "Ж", "З", "И", "Й", "К", "Л", "М", "Н", "О",
        "П", "Р", "С", "Т", "У", "Ф", "Х", "Ц", "Ч", "Ш", "Щ", "Ъ", "Ы", "Ь", "Э", "Ю", "Я"
    ];

    var latin = [
        "a", "b", "v", "g", "d", "e", "yo", "zh", "z", "i", "y", "k", "l", "m", "n", "o",
        "p", "r", "s", "t", "u", "f", "h", "ts", "ch", "sh", "sht", "", "y", "", "e", "yu", "ya",
        "A", "B", "B", "G", "D", "E", "Yo", "Zh", "Z", "I", "Y", "K", "L", "M", "N", "O",
        "P", "R", "S", "T", "U", "F", "H", "Ts", "Ch", "Sh", "Sht", "", "Y", "", "E", "Yu", "Ya"
    ];

    var string = '';

    $.fn.friendurl = function(options) {

        if (options.destroy) {
            return $(this).unbind("keyup.friendurl");
        }

        var defaults = {
            divider         : '-',
            transliterate   : false,
            onlyReturnResult: false
        };

        var options = $.extend(defaults, options);

        if (options.onlyReturnResult) {
            
            // Возврат результата преобразования
            return buildFriendUrl(this.val());
        } else {
            
            return this.each(function() {
                // Биндинг обработчика события keyup
                $(this).bind("keyup.friendurl",
                    function() {
                        var url = buildFriendUrl($(this).val());
                        $('#' + options.id).val(url);
                    }
                );
            });
        }

        function buildFriendUrl(text) {
            text = text
                    .toLowerCase() // change everything to lowercase
                    .replace(/^\s+|\s+$/g, "") // trim leading and trailing spaces
                    .replace(/[_|\s]+/g, "-") // change all spaces and underscores to a hyphen
                    .replace(/[^a-z\u0400-\u04FF0-9-/]+/g, "") // remove all non-cyrillic, non-numeric characters except the hyphen
                    .replace(/[-]+/g, "-") // replace multiple instances of the hyphen with a single instance
                    .replace(/^-+|-+$/g, "") // trim leading and trailing hyphens
                    .replace(/\//g, "-")
                    .replace(/[-]+/g, options.divider);

            if (options.transliterate) {
                text = convert(text);
            }

            return text;
        }

        function convert (text) {
            string = str_replace(cyrillic, latin, text);
            return string;
        }

        function str_replace (search, replace, subject, count) {
            // http://kevin.vanzonneveld.net
            // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
            // +   improved by: Gabriel Paderni
            // +   improved by: Philip Peterson
            // +   improved by: Simon Willison (http://simonwillison.net)
            // +    revised by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
            // +   bugfixed by: Anton Ongson
            // +      input by: Onno Marsman
            // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
            // +    tweaked by: Onno Marsman
            // +      input by: Brett Zamir (http://brett-zamir.me)
            // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
            // +   input by: Oleg Eremeev
            // +   improved by: Brett Zamir (http://brett-zamir.me)
            // +   bugfixed by: Oleg Eremeev
            // %          note 1: The count parameter must be passed as a string in order
            // %          note 1:  to find a global variable in which the result will be given
            // *     example 1: str_replace(' ', '.', 'Kevin van Zonneveld');
            // *     returns 1: 'Kevin.van.Zonneveld'
            // *     example 2: str_replace(['{name}', 'l'], ['hello', 'm'], '{name}, lars');
            // *     returns 2: 'hemmo, mars'

            var i = 0, j = 0, temp = '', repl = '', sl = 0, fl = 0,
                    f = [].concat(search),
                    r = [].concat(replace),
                    s = subject,
                    ra = r instanceof Array, sa = s instanceof Array;
            s = [].concat(s);
            if (count) {
                this.window[count] = 0;
            }

            for (i = 0, sl = s.length; i < sl; i++) {
                if (s[i] === '') {
                    continue;
                }
                
                for (j = 0, fl = f.length; j < fl; j++) {
                    temp = s[i]+'';
                    repl = ra ? (r[j] !== undefined ? r[j] : '') : r[0];
                    s[i] = (temp).split(f[j]).join(repl);
                    if (count && s[i] !== temp) {
                        this.window[count] += (temp.length - s[i].length) / f[j].length;
                    }
                }
            }

            return sa ? s : s[0];
        }
    };
})(jQuery);