improve server clientcount/activity graph on server overview

Application/IW4MServer.cs

@@ -1028,12 +1028,19 @@ namespace IW4MAdmin
                 {
                     var maxItems = Math.Ceiling(appConfig.MaxClientHistoryTime.TotalMinutes /
                                                 appConfig.ServerDataCollectionInterval.TotalMinutes);
-                    while ( ClientHistory.Count > maxItems) 
+                    
+                    while (ClientHistory.ClientCounts.Count > maxItems) 
                     {
-                        ClientHistory.Dequeue();
+                        ClientHistory.ClientCounts.RemoveAt(0);
                     }
 
-                    ClientHistory.Enqueue(new PlayerHistory(ClientNum));
+                    ClientHistory.ClientCounts.Add(new ClientCountSnapshot
+                    {
+                        ClientCount = ClientNum,
+                        ConnectionInterrupted = Throttled,
+                        Time = DateTime.UtcNow,
+                        Map = CurrentMap.Name
+                    });
                     playerCountStart = DateTime.Now;
                 }
 

Application/Misc/ServerDataCollector.cs

@@ -94,7 +94,8 @@ namespace IW4MAdmin.Application.Misc
                     PeriodBlock = (int) (DateTimeOffset.UtcNow - DateTimeOffset.UnixEpoch).TotalMinutes,
                     ServerId = await server.GetIdForServer(),
                     MapId = await GetOrCreateMap(server.CurrentMap.Name, (Reference.Game) server.GameName, token),
-                    ClientCount = server.ClientNum
+                    ClientCount = server.ClientNum,
+                    ConnectionInterrupted = server.Throttled,
                 }));
 
             return data;
@@ -144,4 +145,4 @@ namespace IW4MAdmin.Application.Misc
             context.SaveChanges();
         }
     }
-}
+}

Application/Misc/ServerDataViewer.cs

@@ -135,7 +135,9 @@ namespace IW4MAdmin.Application.Misc
                         {
                             snapshot.ServerId,
                             snapshot.CapturedAt,
-                            snapshot.ClientCount
+                            snapshot.ClientCount,
+                            snapshot.ConnectionInterrupted,
+                            MapName = snapshot.Map.Name,
                         })
                     .OrderBy(snapshot => snapshot.CapturedAt)
                     .ToListAsync(cancellationToken);
@@ -143,8 +145,8 @@ namespace IW4MAdmin.Application.Misc
                 return history.GroupBy(snapshot => snapshot.ServerId).Select(byServer => new ClientHistoryInfo
                 {
                     ServerId = byServer.Key,
-                    ClientCounts = byServer.Select(snapshot => new ClientCountSnapshot()
-                        {Time = snapshot.CapturedAt, ClientCount = snapshot.ClientCount}).ToList()
+                    ClientCounts = byServer.Select(snapshot => new ClientCountSnapshot
+                        { Time = snapshot.CapturedAt, ClientCount = snapshot.ClientCount, ConnectionInterrupted = snapshot.ConnectionInterrupted ?? false, Map = snapshot.MapName}).ToList()
                 }).ToList();
             }, nameof(_clientHistoryCache), TimeSpan.MaxValue);
 
@@ -159,4 +161,4 @@ namespace IW4MAdmin.Application.Misc
             }
         }
     }
-}
+}

Data/Migrations/MySql/20220329213440_AddConnectionInterruptedToEFServerSnapshot.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Data.Migrations.MySql
+{
+    public partial class AddConnectionInterruptedToEFServerSnapshot : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<bool>(
+                name: "ConnectionInterrupted",
+                table: "EFServerSnapshot",
+                type: "tinyint(1)",
+                nullable: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "ConnectionInterrupted",
+                table: "EFServerSnapshot");
+        }
+    }
+}

Data/Migrations/MySql/MySqlDatabaseContextModelSnapshot.cs

@@ -1081,6 +1081,9 @@ namespace Data.Migrations.MySql
                     b.Property<int>("ClientCount")
                         .HasColumnType("int");
 
+                    b.Property<bool?>("ConnectionInterrupted")
+                        .HasColumnType("tinyint(1)");
+
                     b.Property<int>("MapId")
                         .HasColumnType("int");
 

Data/Migrations/Postgresql/20220329213521_AddConnectionInterruptedToEFServerSnapshot.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Data.Migrations.Postgresql
+{
+    public partial class AddConnectionInterruptedToEFServerSnapshot : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<bool>(
+                name: "ConnectionInterrupted",
+                table: "EFServerSnapshot",
+                type: "boolean",
+                nullable: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "ConnectionInterrupted",
+                table: "EFServerSnapshot");
+        }
+    }
+}

Data/Migrations/Postgresql/PostgresqlDatabaseContextModelSnapshot.cs

@@ -1134,6 +1134,9 @@ namespace Data.Migrations.Postgresql
                     b.Property<int>("ClientCount")
                         .HasColumnType("integer");
 
+                    b.Property<bool?>("ConnectionInterrupted")
+                        .HasColumnType("boolean");
+
                     b.Property<int>("MapId")
                         .HasColumnType("integer");
 

Data/Migrations/Sqlite/20220329163928_AddConnectionInterruptedToEFServerSnapshot.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Data.Migrations.Sqlite
+{
+    public partial class AddConnectionInterruptedToEFServerSnapshot : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<bool>(
+                name: "ConnectionInterrupted",
+                table: "EFServerSnapshot",
+                type: "INTEGER",
+                nullable: true);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "ConnectionInterrupted",
+                table: "EFServerSnapshot");
+        }
+    }
+}

Data/Migrations/Sqlite/SqliteDatabaseContextModelSnapshot.cs

@@ -1079,6 +1079,9 @@ namespace Data.Migrations.Sqlite
                     b.Property<int>("ClientCount")
                         .HasColumnType("INTEGER");
 
+                    b.Property<bool?>("ConnectionInterrupted")
+                        .HasColumnType("INTEGER");
+
                     b.Property<int>("MapId")
                         .HasColumnType("INTEGER");
 

Data/Models/Server/EFServerSnapshot.cs

@@ -32,5 +32,7 @@ namespace Data.Models.Server
         public EFMap Map { get; set; }
         
         public int ClientCount { get; set; }
+        
+        public bool? ConnectionInterrupted {get;set;}
     }
-}
+}

SharedLibraryCore/Dtos/ClientHistoryInfo.cs

@@ -6,13 +6,19 @@ namespace SharedLibraryCore.Dtos
     public class ClientHistoryInfo
     {
         public long ServerId { get; set; }
-        public List<ClientCountSnapshot> ClientCounts { get; set; }
+        public List<ClientCountSnapshot> ClientCounts { get; set; } = new();
     }
 
     public class ClientCountSnapshot
     {
+        private const int UpdateInterval = 5;
         public DateTime Time { get; set; }
-        public string TimeString => Time.ToString("yyyy-MM-ddTHH:mm:ssZ");
+        public string TimeString => new DateTime(Time.Year, Time.Month, Time.Day, Time.Hour,
+                Math.Min(59, UpdateInterval * (int)Math.Round(Time.Minute / (float)UpdateInterval)), 0)
+            .ToString("yyyy-MM-ddTHH:mm:ssZ");
         public int ClientCount { get; set; }
+        public bool ConnectionInterrupted { get;set; }
+        public string Map { get; set; }
+        public string MapAlias { get; set; }
     }
-}
+}

SharedLibraryCore/Dtos/ServerInfo.cs

@@ -15,8 +15,7 @@ namespace SharedLibraryCore.Dtos
         public int MaxClients { get; set; }
         public List<ChatInfo> ChatHistory { get; set; }
         public List<PlayerInfo> Players { get; set; }
-        public PlayerHistory[] PlayerHistory { get; set; }
-        public List<ClientCountSnapshot> ClientCountHistory { get; set; }
+        public ClientHistoryInfo ClientHistory { get; set; }
         public long ID { get; set; }
         public bool Online { get; set; }
         public string ConnectProtocolUrl { get; set; }
@@ -40,4 +39,4 @@ namespace SharedLibraryCore.Dtos
             }
         }
     }
-}
+}

SharedLibraryCore/Helpers/PlayerHistory.cs

@@ -1,40 +0,0 @@
-using System;
-using SharedLibraryCore.Dtos;
-
-namespace SharedLibraryCore.Helpers
-{
-    public class PlayerHistory
-    {
-        // how many minutes between updates
-        public static readonly int UpdateInterval = 5;
-
-        private readonly DateTime When;
-
-        public PlayerHistory(int cNum)
-        {
-            var t = DateTime.UtcNow;
-            When = new DateTime(t.Year, t.Month, t.Day, t.Hour,
-                Math.Min(59, UpdateInterval * (int)Math.Round(t.Minute / (float)UpdateInterval)), 0);
-            y = cNum;
-        }
-
-        /// <summary>
-        ///     Used by CanvasJS as a point on the x axis
-        /// </summary>
-        public string x => When.ToString("yyyy-MM-ddTHH:mm:ssZ");
-
-        /// <summary>
-        ///     Used by CanvasJS as a point on the y axis
-        /// </summary>
-        public int y { get; }
-
-        public ClientCountSnapshot ToClientCountSnapshot()
-        {
-            return new ClientCountSnapshot
-            {
-                ClientCount = y,
-                Time = When
-            };
-        }
-    }
-}

SharedLibraryCore/Server.cs

@@ -71,7 +71,7 @@ namespace SharedLibraryCore
             EventProcessing = new SemaphoreSlim(1, 1);
             Clients = new List<EFClient>(new EFClient[64]);
             Reports = new List<Report>();
-            ClientHistory = new Queue<PlayerHistory>();
+            ClientHistory = new ClientHistoryInfo();
             ChatHistory = new List<ChatInfo>();
             NextMessage = 0;
             CustomSayEnabled = Manager.GetApplicationSettings().Configuration().EnableCustomSayName;
@@ -97,7 +97,7 @@ namespace SharedLibraryCore
         public List<Map> Maps { get; protected set; } = new List<Map>();
         public List<Report> Reports { get; set; }
         public List<ChatInfo> ChatHistory { get; protected set; }
-        public Queue<PlayerHistory> ClientHistory { get; }
+        public ClientHistoryInfo ClientHistory { get; }
         public Game GameName { get; set; }
 
         public string Hostname

WebfrontCore/Controllers/ServerController.cs

@@ -48,7 +48,7 @@ namespace WebfrontCore.Controllers
                             .CLIENT_STATS_KEY)?.ZScore
                     }).ToList(),
                 ChatHistory = s.ChatHistory.ToList(),
-                PlayerHistory = s.ClientHistory.ToArray(),
+                ClientHistory = s.ClientHistory,
                 IsPasswordProtected = !string.IsNullOrEmpty(s.GamePassword)
             };
             return PartialView("_ClientActivity", serverInfo);

WebfrontCore/ViewComponents/ServerListViewComponent.cs

@@ -19,16 +19,27 @@ namespace WebfrontCore.ViewComponents
     {
         private readonly IServerDataViewer _serverDataViewer;
         private readonly ApplicationConfiguration _appConfig;
+        private readonly DefaultSettings _defaultSettings;
 
         public ServerListViewComponent(IServerDataViewer serverDataViewer,
-            ApplicationConfiguration applicationConfiguration)
+            ApplicationConfiguration applicationConfiguration, DefaultSettings defaultSettings)
         {
             _serverDataViewer = serverDataViewer;
             _appConfig = applicationConfiguration;
+            _defaultSettings = defaultSettings;
         }
 
         public IViewComponentResult Invoke(Game? game)
         {
+            if (game.HasValue)
+            {
+                ViewBag.Maps = _defaultSettings.Maps.FirstOrDefault(map => map.Game == game);
+            }
+            else
+            {
+                ViewBag.Maps = _defaultSettings.Maps.SelectMany(maps => maps.Maps).ToList();
+            }
+
             var servers = Program.Manager.GetServers().Where(server => !game.HasValue || server.GameName == game);
 
             var serverInfo = new List<ServerInfo>();
@@ -47,14 +58,14 @@ namespace WebfrontCore.ViewComponents
 
                 var counts = clientHistory.ClientCounts?.AsEnumerable() ?? Enumerable.Empty<ClientCountSnapshot>();
 
-                if (server.ClientHistory.Count > 0)
+                if (server.ClientHistory.ClientCounts.Any())
                 {
-                    counts = counts.Union(server.ClientHistory
-                        .Select(history => history.ToClientCountSnapshot()).Where(history =>
-                            history.Time > (clientHistory.ClientCounts?.LastOrDefault()?.Time ?? DateTime.MinValue)));
+                    counts = counts.Union(server.ClientHistory.ClientCounts.Where(history =>
+                            history.Time > (clientHistory.ClientCounts?.LastOrDefault()?.Time ?? DateTime.MinValue)))
+                        .Where(history => history.Time >= DateTime.UtcNow - _appConfig.MaxClientHistoryTime);
                 }
 
-                serverInfo.Add(new ServerInfo()
+                serverInfo.Add(new ServerInfo
                 {
                     Name = server.Hostname,
                     ID = server.EndPoint,
@@ -63,7 +74,11 @@ namespace WebfrontCore.ViewComponents
                     ClientCount = server.Clients.Count(client => client != null),
                     MaxClients = server.MaxClients,
                     GameType = server.GametypeName,
-                    PlayerHistory = server.ClientHistory.ToArray(),
+                    ClientHistory = new ClientHistoryInfo
+                    {
+                        ServerId = server.EndPoint,
+                        ClientCounts = counts.ToList()
+                    },
                     Players = server.GetClientsAsList()
                         .Select(p => new PlayerInfo()
                         {
@@ -77,9 +92,6 @@ namespace WebfrontCore.ViewComponents
                                 .CLIENT_STATS_KEY)?.ZScore
                         }).ToList(),
                     ChatHistory = server.ChatHistory.ToList(),
-                    ClientCountHistory =
-                        counts.Where(history => history.Time >= DateTime.UtcNow - _appConfig.MaxClientHistoryTime)
-                            .ToList(),
                     Online = !server.Throttled,
                     IPAddress =
                         $"{(server.ResolvedIpEndPoint.Address.IsInternal() ? Program.Manager.ExternalIPAddress : server.IP)}:{server.Port}",

WebfrontCore/Views/Server/_Server.cshtml

@@ -1,6 +1,21 @@
 @model SharedLibraryCore.Dtos.ServerInfo
 @{
     Layout = null;
+
+    string GetMapName(string mapCode)
+    {
+        if (ViewBag.Maps?.Count == 0)
+        {
+            return mapCode;
+        }
+
+        return (ViewBag.Maps as List<Map>)?.FirstOrDefault(map => map.Name == mapCode)?.Alias ?? mapCode;
+    }
+
+    foreach (var snapshot in Model.ClientHistory.ClientCounts)
+    {
+        snapshot.MapAlias = GetMapName(snapshot.Map);
+    }
 }
 
 <div class="row server-header pt-1 pb-1 bg-primary " id="server_header_@Model.ID">
@@ -58,8 +73,10 @@
 </div>
 
 <div class="row server-history mb-4">
-    <div class="server-history-row" id="server_history_@Model.ID" data-serverid="@Model.ID" 
-         data-clienthistory='@Html.Raw(Json.Serialize(Model.PlayerHistory))'
-         data-clienthistory-ex='@Html.Raw(Json.Serialize(Model.ClientCountHistory))'
-         data-online="@Model.Online"></div>
+    <div class="server-history-row" style="position:relative; width: 80vw" id="server_history_@Model.ID" data-serverid="@Model.ID"
+         data-clienthistory='@Html.Raw(Json.Serialize(Model.ClientHistory))'
+         data-clienthistory-ex='@Html.Raw(Json.Serialize(Model.ClientHistory.ClientCounts))'
+         data-online="@Model.Online">
+        <canvas id="server_history_canvas_@Model.ID" height="100"></canvas>
+    </div>
 </div>

WebfrontCore/wwwroot/js/server.js

@@ -1,64 +1,163 @@
-function getPlayerHistoryChart(playerHistory, i, width, color, maxClients) {
-    ///////////////////////////////////////
-    // thanks to canvasjs :(
-    playerHistory.forEach(function (item, i) {
-        playerHistory[i].x = new Date(playerHistory[i].timeString);
-        playerHistory[i].y = playerHistory[i].clientCount;
+function createDiagonalPattern(color = 'black') {
+    let shape = document.createElement('canvas');
+    shape.width = 10;
+    shape.height = 10;
+    let c = shape.getContext('2d');
+    c.strokeStyle = color;
+    c.beginPath();
+    c.moveTo(2, 0);
+    c.lineTo(10, 8);
+    c.stroke();
+    c.beginPath();
+    c.moveTo(0, 8);
+    c.lineTo(2, 10);
+    c.stroke();
+    return c.createPattern(shape, 'repeat');
+}
+
+function getPlayerHistoryChart(playerHistory, i, width, maxClients) {
+    const primaryColor = $('title').css('background-color');
+    const rgb = primaryColor.match(/\d+/g);
+    const fillColor = `rgba(${rgb[0]}, ${rgb[1]}, ${rgb[2]}, 0.66)`;
+    const offlineFillColor = 'rgba(255, 96, 96, 0.55)';
+
+    const onlineTime = [];
+    const offlineTime = [];
+    const mapChange = [];
+    let lastMap = '';
+
+    playerHistory.forEach((elem, i) => {
+        if (elem.map !== lastMap) {
+            mapChange.push(i);
+            lastMap = elem.map;
+        }
+
+        if (elem.connectionInterrupted) {
+            offlineTime.push({
+                clientCount: maxClients,
+                timeString: elem.timeString
+            });
+
+            onlineTime.push({
+                clientCount: 0,
+                timeString: elem.timeString
+            })
+        } else {
+            offlineTime.push({
+                clientCount: 0,
+                timeString: elem.timeString
+            });
+
+            onlineTime.push(elem)
+        }
     });
 
-    return new CanvasJS.Chart(`server_history_${i}`, {
-        backgroundColor: '#191919',
-        height: 100,
-        width: width,
-        animationEnabled: true,
-        toolTip: {
-            contentFormatter: function (e) {
-                const date = moment.utc(e.entries[0].dataPoint.x);
-                return date.local().calendar() + " - " + e.entries[0].dataPoint.y + " players";
+    let animationProgress = 0;
+    let initialAnimationComplete = false;
+    const originalLineDraw = Chart.controllers.line.prototype.draw;
+    Chart.helpers.extend(Chart.controllers.line.prototype, {
+        draw: function () {
+            originalLineDraw.apply(this, arguments);
+
+            const chart = this.chart;
+            const ctx = chart.chart.ctx;
+
+            chart.config.data.lineAtIndexes.forEach((elem, index) => {
+                const xScale = chart.scales['x-axis-0'];
+                const yScale = chart.scales['y-axis-0'];
+
+                ctx.save();
+                ctx.beginPath();
+                ctx.moveTo(xScale.getPixelForValue(undefined, elem), yScale.getPixelForValue(playerHistory[elem].clientCount) / (initialAnimationComplete ? 1 : animationProgress));
+                ctx.strokeStyle = 'rgba(255, 255, 255, 0.1)';
+                ctx.lineTo(xScale.getPixelForValue(undefined, elem), yScale.bottom);
+                ctx.stroke();
+                ctx.restore();
+            });
+        }
+    });
+
+    const canvas = document.getElementById(`server_history_canvas_${i}`);
+    canvas.setAttribute('width', width);
+
+    return new Chart(document.getElementById(`server_history_canvas_${i}`), {
+        type: 'line',
+        data: {
+            labels: playerHistory.map(history => history.timeString),
+            datasets: [{
+                data: onlineTime.map(history => history.clientCount),
+                backgroundColor: fillColor,
+                borderColor: primaryColor,
+                borderWidth: 2,
+                hoverBorderColor: 'white',
+                hoverBorderWidth: 2
+            },
+                {
+                    data: offlineTime.map(history => history.clientCount),
+                    backgroundColor: createDiagonalPattern(offlineFillColor),
+                    borderColor: offlineFillColor,
+                    borderWidth: 2,
+                    hoverBorderColor: 'white',
+                    hoverBorderWidth: 2
+                }],
+            lineAtIndexes: mapChange,
+        },
+        options: {
+            responsive: true,
+            maintainAspectRatio: false,
+            onResize: function(chart, size) {
+                console.log(size);
+            },
+            legend: false,
+            defaultFontFamily: '-apple-system, BlinkMacSystemFont, "Open Sans", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"',
+            tooltips: {
+                callbacks: {
+                    // todo: localization at some point
+                    label: context => context.datasetIndex !== 1 ? `${context.value} players on ${playerHistory[context.index].mapAlias}` : context.value === '0' ? '' : 'Server Unreachable!',
+                    title: context => context[0].datasetIndex !== 1 ? moment(context[0].label).local().calendar() : ''
+                },
+                mode: 'nearest',
+                intersect: false,
+                animationDuration: 0,
+                cornerRadius: 0,
+                displayColors: false
+            },
+            scales: {
+                xAxes: [{
+                    display: false,
+                }],
+                yAxes: [{
+                    display: false,
+                    gridLines: {
+                        display: false
+                    },
+                    ticks: {
+                        max: 1,
+                        min: maxClients + 2
+                    }
+                }]
+            },
+            hover: {
+                mode: 'nearest',
+                intersect: false
+            },
+            elements: {
+                point: {
+                    radius: 0
+                }
+            },
+            animation: {
+                duration: 1000,
+                onProgress: function (context) {
+                    animationProgress = context.currentStep / context.numSteps;
+                    if (animationProgress >= 1) {
+                        initialAnimationComplete = true;
+                    }
+                }
             }
         },
-        axisX: {
-            interval: 1,
-            gridThickness: 0,
-            lineThickness: 0,
-            tickThickness: 0,
-            margin: 0,
-            valueFormatString: " "
-        },
-        axisY: {
-            gridThickness: 0,
-            lineThickness: 0,
-            tickThickness: 0,
-            minimum: 0,
-            maximum: maxClients + 1,
-            margin: 0,
-            valueFormatString: " ",
-            labelMaxWidth: 0
-        },
-        legend: {
-            maxWidth: 0,
-            maxHeight: 0,
-            dockInsidePlotArea: true
-        },
-        data: [{
-            showInLegend: false,
-            type: "splineArea",
-            color: color,
-            markerSize: 0,
-            dataPoints: playerHistory
-        }]
     });
-    //////////////////////////////////////
 }
-var charts = {};
-
-$(window).resize(function () {
-    $('.server-history-row').each(function (index) {
-        let serverId = $(this).data('serverid');
-        charts[serverId].options.width = $('.server-header').first().width();
-        charts[serverId].render();
-    });
-});
 
 function refreshClientActivity() {
     $('.server-history-row').each(function (index) {
@@ -88,17 +187,13 @@ $(document).ready(function () {
         let clientHistory = $(this).data('clienthistory-ex');
         let serverId = $(this).data('serverid');
         let maxClients = parseInt($('#server_header_' + serverId + ' .server-maxclients').text());
-        let primaryColor = $('title').css('background-color');
-        let color = $(this).data('online') === 'True' ? primaryColor : '#ff6060';
         let width = $('.server-header').first().width();
-        let historyChart = getPlayerHistoryChart(clientHistory, serverId, width, color, maxClients);
-        historyChart.render();
-        charts[serverId] = historyChart;
+        getPlayerHistoryChart(clientHistory, serverId, width, maxClients);
     });
-    
+
     $('.moment-date').each((index, element) => {
         const title = $(element).attr('title');
-        
+
         if (title !== undefined) {
             const date = new Date(title);
             $(element).attr('title', moment.utc(date).calendar());