/**
 * Ojbect Oriented Javascript Cookies
 *
 * Copyright (c) 2009 Dominique Kimbell
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 */
 
 /**
 * Instantiate a cookie object and assign values.
 * @example var c = new cookie();
 *
 * @desc Set the value of a cookie.
 * @example c.field1 = value1;
            c.field2 = value2;
 * @desc Create a cookie with all available options.            
 * @example cookie.set({ expires: 7, path: '/', domain: 'jquery.com', secure: true });
 
 * @desc Create a session cookie.
 * @example cookie.set();
 
 * @desc Delete a cookie by passing null as value. Keep in mind that you have to use the same path and domain
 *       used when the cookie was set.
 * @example cookie.set(null);
 * 
 * @param Object options An object literal containing key/value pairs to provide optional cookie attributes.
 * @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object.
 *                             If a negative value is specified (e.g. a date in the past), the cookie will be deleted.
 *                             If set to null or omitted, the cookie will be a session cookie and will not be retained
 *                             when the the browser exits.
 * @option String path The value of the path atribute of the cookie (default: path of page that created the cookie).
 * @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie).
 * @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will
 *                        require a secure protocol (like HTTPS).
 * @type Object
 */

/**
 * Get the value of a cookie.
 *
 * @desc Get the value of a cookie.
 * @example c.get().field;
 *
 * @optional set/get name of cookie. 
 *      Default: cookie****... (x = digit);
 * @desc set/get cookie name syntax: 
 * @example c.cookieID = "cookieName" !Important! 'cookieID' is reserved word!
 * @type String
 */
 
jQuery.cookie = function(){
    var url = location.href;
    var filter = ":/.%-_", id = ''; ID = 0;
    for(var ch in url) if (filter.indexOf(ch) == -1) id += ch;
    for(var ch in id) ID += ch.charCodeAt();
    this.cookieID = "cookie"+ID;

    this.set = function(options){
        var cookieContent = '';
        var filterProperties = {"cookieID":0,"set":1,"get":2};
        options = options || {};
        for(var property in this){
            if(!(property in filterProperties)){
                if (this[property] === null) this[property] = '';
                cookieContent += (property) + ':' + (this[property]) + ',';
            }
        }
        cookieContent = cookieContent.substring(0,cookieContent.length-1);
        var expires = '';
        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
            var date;
            if (typeof options.expires == 'number') {
                date = new Date();
                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
            } else {
                date = options.expires;
            }
            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
        }
        // CAUTION: Needed to parenthesize options.path and options.domain
        // in the following expressions, otherwise they evaluate to undefined
        // in the packed version for some reason...
        var path = options.path ? '; path=' + (options.path) : '';
        var domain = options.domain ? '; domain=' + (options.domain) : '';
        var secure = options.secure ? '; secure' : '';
        document.cookie = [this.cookieID, '=', encodeURIComponent(cookieContent), expires, path, domain, secure].join('');
        return true;
    };

    this.get = function(){
        var cookieValue = '';
        if (document.cookie && document.cookie != '') {
            var cookies = document.cookie.split(';');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = jQuery.trim(cookies[i]);
                // Does this cookie string begin with the name we want?
                if (cookie.substring(0, this.cookieID.length + 1) == (this.cookieID + '=')) {
                    cookieValue = decodeURIComponent(cookie.substring(this.cookieID.length + 1));
                    break;
                }
            }
            var properties = cookieValue.split(',');
            for(var i = 0; i<properties.length;i++){
                var property = properties[i].split(':');
                this[property[0]] = property[1];
            }
        }
        return true;
    };
    return this;
};