/*
 * jQuery Notifications plugin 1.1
 *
 * http://programmingmind.com
 *
 * Copyright (c) 2009 David Ang
 *
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 *   Version Changes
 *
 *   1.1 8/17/2008
 *   - Allow users to choose between slide or fade effect
 *   - Fixed fadeSpeed option settings
 *
 *   1.0 8/9/2008
 *    - Initial release
 */
(function($){
    var template;
    var counter = 0;

    $.notifications = function(msg, options) {
        counter++;

        var settings = $.extend({}, $.notifications.defaults, options);

        if (!template) {
            template = $('<div id="jquery-notifications"></div>').prependTo(document.body);
        }

        var n = $( '<p class="' + settings.type + '" id="jquery-notifications-' + counter + '">' + msg + '</p>').hide().appendTo("#jquery-notifications");
        if( settings.effect == "fade" ) {
            n.fadeIn( settings.fadeSpeed );
        } else {
            n.slideDown( settings.fadeSpeed );
        }

        if (settings.stick) {
            var close = $('<a href="javascript:void(0);">' + settings.close + '</a>').click(function() {
                if (settings.effect == "fade") {
                    $(this.parentNode).fadeOut( settings.fadeSpeed, function() {
                        $(this).remove();
                    });
                }
                else {
                    $(this.parentNode).slideUp( settings.fadeSpeed, function() {
                        $(this).remove();
                    });
                }
            });
            close.appendTo(n);
        }

        if (!settings.stick) {
            var notificationsDelayer = delayTimer(settings.timeout);
            notificationsDelayer(update, { counter: counter, effect: settings.effect, fadeSpeed : settings.fadeSpeed } );
        }

        if ($("#errorExplanation").length) {
            // if there exists an errorExplanation div from rails 3.0,
            // hide the errors and list them down as notifications
            $("#errorExplanation").hide();
            $("#errorExplanation li").each(function(index) {
                $.n.error($(this).text());
            });
        }
    };

    $.notifications.success = function( msg, options ){
        return $.notifications( msg, $.extend( {}, options, { type : "success"}) );
    };

    $.notifications.error = function( msg, options ){
        return $.notifications( msg, $.extend( { stick: true }, options, { type : "error" }) );
    };

    $.notifications.warning = function( msg, options ){
        return $.notifications( msg, $.extend( {}, options, { type : "warning" }) );
    };

    $.notifications.info = function( msg, options ){
        return $.notifications( msg, $.extend( {}, options, { type : "info" }) );
    };

    $.notifications.debug = function( msg, options ){
        return $.notifications( msg, $.extend( { stick: true }, options, { type : "debug" }) );
    };

    function update(params) {
        if (params.effect == "fade") {
            $("#jquery-notifications-" + params.counter).fadeOut( params.fadeSpeed, function(){
                $(this).remove();
            });
        } else {
            $("#jquery-notifications-" + params.counter).slideUp( params.fadeSpeed, function(){
                $(this).remove();
            });
        }
    }

    function delayTimer(delay) {
        var timer;
        return function(fn, params) {
            timer = clearTimeout(timer);
            if (fn)
                timer = setTimeout(function() {
                    fn(params);
                }, delay);
            return timer;
        };
    }

    $.notifications.defaults = {
            type: "success",
            timeout: 10000,
            stick: false,
            fadeSpeed : 800,
            close : "x",
            effect : "fade"
        };

    $.n = $.notifications;

})(jQuery);