/**
* @author 	Maxime Haineault (max@centdessin.com)
* @version	0.3
* @desc 	JavaScript cookie manipulation class
* 
*/

Cookie = {

    /** Get a cookie's value
    *
    *  @param integer	key		The token used to create the cookie
    *  @return void
    */
    get: function(key) {
        // Still not sure that "[a-zA-Z0-9.()=|%/]+($|;)" match *all* allowed characters in cookies
        tmp = document.cookie.match((new RegExp(key + '=[a-zA-Z0-9.()=|%/]+($|;)', 'g')));
        if (!tmp || !tmp[0]) return null;
        else return unescape(tmp[0].substring(key.length + 1, tmp[0].length).replace(';', '')) || null;

    },

    /** Set a cookie
    *
    *  @param integer	key		The token that will be used to retrieve the cookie
    *  @param string	value	The string to be stored
    *  @param integer	ttl		Time To Live (hours)
    *  @param string	path	Path in which the cookie is effective, default is "/" (optional)
    *  @param string	domain	Domain where the cookie is effective, default is window.location.hostname (optional)
    *  @param boolean 	secure	Use SSL or not, default false (optional)
    * 
    *  @return setted cookie
    */
    set: function(key, value, ttl, path, domain, secure) {
        cookie = [key + '=' + escape(value),
		 		  'path=' + ((!path || path == '') ? '/' : path),
		 		  'domain=' + ((!domain || domain == '') ? window.location.hostname : domain)];

        if (ttl) cookie.push(Cookie.hoursToExpireDate(ttl));
        if (secure) cookie.push('secure');
        return document.cookie = cookie.join('; ');
    },

    /** Unset a cookie
    *
    *  @param integer	key		The token that will be used to retrieve the cookie
    *  @param string	path	Path used to create the cookie (optional)
    *  @param string	domain	Domain used to create the cookie, default is null (optional)
    *  @return void
    */
    unset: function(key, path, domain) {
        path = (!path || typeof path != 'string') ? '' : path;
        domain = (!domain || typeof domain != 'string') ? '' : domain;
        if (Cookie.get(key)) Cookie.set(key, '', 'Thu, 01-Jan-70 00:00:01 GMT', path, domain);
    },

    /** Return GTM date string of "now" + time to live
    *
    *  @param integer	ttl		Time To Live (hours)
    *  @return string
    */
    hoursToExpireDate: function(ttl) {
        if (parseInt(ttl) == 'NaN') return '';
        else {
            now = new Date();
            now.setTime(now.getTime() + (parseInt(ttl) * 60 * 60 * 1000));
            return now.toGMTString();
        }
    },

    /** Return true if cookie functionnalities are available
    *
    *  @return boolean
    */
    test: function() {
        Cookie.set('b49f729efde9b2578ea9f00563d06e57', 'true');
        if (Cookie.get('b49f729efde9b2578ea9f00563d06e57') == 'true') {
            Cookie.unset('b49f729efde9b2578ea9f00563d06e57');
            return true;
        }
        return false;
    },

    /** If Firebug JavaScript console is present, it will dump cookie string to console.
    * 
    *  @return void
    */
    dump: function() {
        if (typeof console != 'undefined') {
            console.log(document.cookie.split(';'));
        }
    }
}