var App = App || {};
App.Presenters = App.Presenters || {};

App.Presenters.MessagePresenter = function(_, jQuery) {

    var options = {
        instant: false
    };

    function showInfo($el, message) {
        return showMessage($el, 'info', message);
    }

    function showError($el, message) {
        return showMessage($el, 'error', message);
    }

    function hideMessages($el) {
        var $messages = $el.children('.message');
        if (options.instant) {
            $messages.each(function() {
                jQuery(this).slideUp('fast', function() {
                    jQuery(this).remove();
                });
            });
        } else {
            $messages.remove();
        }
    }

    function showMessage($el, className, message) {
        var $messageDiv = jQuery('<div>');
        $messageDiv.addClass('message');
        $messageDiv.addClass(className);
        $messageDiv.html(message);
        if (!options.instant) {
            $messageDiv.hide();
        }
        $el.append($messageDiv);
        if (!options.instant) {
            $messageDiv.slideDown('fast');
        }
        return $messageDiv;
    }

    return _.extend(options, {
        showInfo: showInfo,
        showError: showError,
        hideMessages: hideMessages,
    });

};

App.DI.register('messagePresenter', ['_', 'jQuery'], App.Presenters.MessagePresenter);
