(function ($, document, Dashboard, LibraryBrowser) {

    function notifications() {

        var self = this;

        self.getNotificationsSummaryPromise = null;

        self.total = 0;

        self.getNotificationsSummary = function() {

            self.getNotificationsSummaryPromise = self.getNotificationsSummaryPromise || ApiClient.getNotificationSummary(Dashboard.getCurrentUserId());

            return self.getNotificationsSummaryPromise;
        };

        self.updateNotificationCount = function() {

            self.getNotificationsSummary().done(function(summary) {

                var item = $('.btnNotifications').removeClass('levelNormal').removeClass('levelWarning').removeClass('levelError').html(summary.UnreadCount);

                if (summary.UnreadCount) {
                    item.addClass('level' + summary.MaxUnreadNotificationLevel);
                }
            });
        };

        self.showNotificationsFlyout = function() {

            var context = this;

            var html = '<div data-role="popup" class="notificationsFlyout" style="min-width:250px;margin-top:30px;margin-right:20px;" data-theme="a">';

            html += '<a href="#" data-rel="back" data-role="button" data-theme="b" data-icon="delete" data-iconpos="notext" class="ui-btn-right">Close</a>';

            html += '<div class="ui-bar-a" style="text-align:center;">';
            html += '<h3 style="margin: .5em 0;">Notifications</h3>';
            html += '</div>';

            html += '<div data-role="content" style="padding: 0;">';

            html += '<p class="notificationsFlyoutlist">Loading...';

            html += '</p>';

            html += '<div style="display:none;" class="btnMarkReadContainer"><button class="btnMarkRead" type="button" data-icon="check" data-mini="true" data-theme="b">Mark these read</button></div>';

            html += '<div class="btnNotificationListContainer"><button class="btnNotificationList" type="button" data-icon="action" data-mini="true">View Notifications</button></div>';

            html += '</div>';

            html += '</div>';

            $(document.body).append(html);

            $('.notificationsFlyout').popup({ positionTo: context }).trigger('create').popup("open").on("popupafterclose", function() {

                $(this).off("popupafterclose").remove();

            }).on('click', '.btnMarkRead', function() {

                var ids = $('.unreadFlyoutNotification').map(function() {

                    return this.getAttribute('data-notificationid');

                }).get();

                self.markNotificationsRead(ids, function() {

                    $('.notificationsFlyout').popup("close");

                });

            }).on("click", ".btnNotificationList", function(e) {

                e.preventDefault();

                Dashboard.navigate("notificationlist.html");

            });

            self.isFlyout = true;

            var startIndex = 0;
            var limit = 4;
            var elem = $('.notificationsFlyoutlist');
            var markReadButton = $('.btnMarkReadContainer');

            refreshNotifications(startIndex, limit, elem, markReadButton, false);
        };

        self.markNotificationsRead = function(ids, callback) {

            ApiClient.markNotificationsRead(Dashboard.getCurrentUserId(), ids, true).done(function() {

                self.getNotificationsSummaryPromise = null;

                self.updateNotificationCount();

                callback();

            });

        };

        self.showNotificationsList = function (startIndex, limit, elem, btn) {

            refreshNotifications(startIndex, limit, elem, btn, true);

        };
    }

    function refreshNotifications(startIndex, limit, elem, btn, showPaging) {

        ApiClient.getNotifications(Dashboard.getCurrentUserId(), { StartIndex: startIndex, Limit: limit }).done(function (result) {

            listUnreadNotifications(result.Notifications, result.TotalRecordCount, startIndex, limit, elem, btn, showPaging);

        });
    }

    function listUnreadNotifications(list, totalRecordCount, startIndex, limit, elem, btn, showPaging) {

        if (!totalRecordCount) {
            elem.html('<p style="padding:.5em 1em;">No unread notifications.</p>');
            btn.hide();
            return;
        }

        Notifications.total = totalRecordCount;

        if (list.filter(function (n) {

            return !n.IsRead;

        }).length) {
            btn.show();
        } else {
            btn.hide();
        }

        var html = '';

        if (totalRecordCount > limit && showPaging === true) {

            var query = { StartIndex: startIndex, Limit: limit };

            html += LibraryBrowser.getPagingHtml(query, totalRecordCount, false, limit, false);
        }

        for (var i = 0, length = list.length; i < length; i++) {

            var notification = list[i];

            html += getNotificationHtml(notification);

        }

        elem.html(html).trigger('create');
    }

    function getNotificationHtml(notification) {

        var html = '';

        var cssClass = notification.IsRead ? "flyoutNotification" : "flyoutNotification unreadFlyoutNotification";

        html += '<div data-notificationid="' + notification.Id + '" class="' + cssClass + '">';

        html += '<div class="notificationImage">';
        html += getImageHtml(notification);
        html += '</div>';

        html += '<div class="notificationContent">';

        html += '<p style="margin: .4em 0 .25em;" class="notificationName">' + notification.Name + '</p>';

        html += '<p style="margin: .25em 0;">' + humane_date(notification.Date) + '</p>';

        if (notification.Description) {
            html += '<p style="margin: .25em 0;">' + notification.Description + '</p>';
        }

        if (notification.Url) {
            html += '<p style="margin: .25em 0;"><a href="' + notification.Url + '" target="_blank">More information</a></p>';
        }

        html += '</div>';

        html += '</div>';

        return html;
    }

    function getImageHtml(notification) {

        if (notification.Level == "Error") {

            return '<div class="imgNotification imgNotificationError"><div class="imgNotificationInner imgNotificationIcon"></div></div>';

        }
        if (notification.Level == "Warning") {

            return '<div class="imgNotification imgNotificationWarning"><div class="imgNotificationInner imgNotificationIcon"></div></div>';

        }

        return '<div class="imgNotification imgNotificationNormal"><div class="imgNotificationInner imgNotificationIcon"></div></div>';

    }

    window.Notifications = new notifications();

    $(Dashboard).on('interiorheaderrendered', function (e, header, user) {

        if (!user || $('.notificationsButton', header).length) {
            return;
        }

        $('<a class="imageLink btnNotifications" href="#" title="Notifications">0</a>').insertAfter($('.btnCurrentUser', header)).on('click', Notifications.showNotificationsFlyout);

        Notifications.updateNotificationCount();
    });

    $(ApiClient).on("websocketmessage", function (e, msg) {


        if (msg.MessageType === "NotificationUpdated" || msg.MessageType === "NotificationAdded" || msg.MessageType === "NotificationsMarkedRead") {

            Notifications.getNotificationsSummaryPromise = null;

            Notifications.updateNotificationCount();
        }

    });


})(jQuery, document, Dashboard, LibraryBrowser);