persist client count history data across reboots and allow for configurable timespan

Application/IW4MServer.cs

@@ -1002,10 +1002,13 @@ namespace IW4MAdmin
                 LastMessage = DateTime.Now - start;
                 lastCount = DateTime.Now;
 
+                var appConfig = _serviceProvider.GetService<ApplicationConfiguration>();
                 // update the player history 
-                if ((lastCount - playerCountStart).TotalMinutes >= PlayerHistory.UpdateInterval)
+                if (lastCount - playerCountStart >= appConfig.ServerDataCollectionInterval)
                 {
-                    while (ClientHistory.Count > ((60 / PlayerHistory.UpdateInterval) * 12)) // 12 times a hour for 12 hours
+                    var maxItems = Math.Ceiling(appConfig.MaxClientHistoryTime.TotalMinutes /
+                                                appConfig.ServerDataCollectionInterval.TotalMinutes);
+                    while ( ClientHistory.Count > maxItems) 
                     {
                         ClientHistory.Dequeue();
                     }

Application/Migration/DatabaseHousekeeping.cs

@@ -4,8 +4,6 @@ using System.Threading;
 using System.Threading.Tasks;
 using Data.Abstractions;
 using Data.Models.Client.Stats;
-using SharedLibraryCore.Database;
-using SharedLibraryCore.Interfaces;
 
 namespace IW4MAdmin.Application.Migration
 {

Application/Misc/ServerDataCollector.cs

@@ -10,6 +10,7 @@ using Data.Models.Server;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Logging;
 using SharedLibraryCore;
+using SharedLibraryCore.Configuration;
 using ILogger = Microsoft.Extensions.Logging.ILogger;
 using SharedLibraryCore.Interfaces;
 
@@ -21,14 +22,16 @@ namespace IW4MAdmin.Application.Misc
         private readonly ILogger _logger;
         private readonly IManager _manager;
         private readonly IDatabaseContextFactory _contextFactory;
+        private readonly ApplicationConfiguration _appConfig;
 
         private bool _inProgress;
         private TimeSpan _period;
 
-        public ServerDataCollector(ILogger<ServerDataCollector> logger, IManager manager,
+        public ServerDataCollector(ILogger<ServerDataCollector> logger, ApplicationConfiguration appConfig,
-            IDatabaseContextFactory contextFactory)
+            IManager manager, IDatabaseContextFactory contextFactory)
         {
             _logger = logger;
+            _appConfig = appConfig;
             _manager = manager;
             _contextFactory = contextFactory;
         }
@@ -42,7 +45,9 @@ namespace IW4MAdmin.Application.Misc
 
             _logger.LogDebug("Initializing data collection with {Name}", nameof(ServerDataCollector));
             _inProgress = true;
-            _period = period ?? TimeSpan.FromMinutes(Utilities.IsDevelopment ? 1 : 5);
+            _period = period ?? (Utilities.IsDevelopment
+                ? TimeSpan.FromMinutes(1)
+                : _appConfig.ServerDataCollectionInterval);
 
             while (!cancellationToken.IsCancellationRequested)
             {

Application/Misc/ServerDataViewer.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
@@ -8,6 +9,8 @@ using Data.Models.Server;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Logging;
 using SharedLibraryCore;
+using SharedLibraryCore.Dtos;
+using SharedLibraryCore.Helpers;
 using SharedLibraryCore.Interfaces;
 using ILogger = Microsoft.Extensions.Logging.ILogger;
 
@@ -19,16 +22,19 @@ namespace IW4MAdmin.Application.Misc
         private readonly ILogger _logger;
         private readonly IDataValueCache<EFServerSnapshot, int> _snapshotCache;
         private readonly IDataValueCache<EFClient, (int, int)> _serverStatsCache;
+        private readonly IDataValueCache<EFServerSnapshot, List<ClientHistoryInfo>> _clientHistoryCache;
 
         private readonly TimeSpan? _cacheTimeSpan =
             Utilities.IsDevelopment ? TimeSpan.FromSeconds(1) : (TimeSpan?) TimeSpan.FromMinutes(1);
 
         public ServerDataViewer(ILogger<ServerDataViewer> logger, IDataValueCache<EFServerSnapshot, int> snapshotCache,
-            IDataValueCache<EFClient, (int, int)> serverStatsCache)
+            IDataValueCache<EFClient, (int, int)> serverStatsCache,
+            IDataValueCache<EFServerSnapshot, List<ClientHistoryInfo>> clientHistoryCache)
         {
             _logger = logger;
             _snapshotCache = snapshotCache;
             _serverStatsCache = serverStatsCache;
+            _clientHistoryCache = clientHistoryCache;
         }
 
         public async Task<int> MaxConcurrentClientsAsync(long? serverId = null, TimeSpan? overPeriod = null,
@@ -45,14 +51,14 @@ namespace IW4MAdmin.Application.Misc
                 {
                     maxClients = await snapshots.Where(snapshot => snapshot.ServerId == serverId)
                         .Where(snapshot => snapshot.CapturedAt >= oldestEntry)
-                        .MaxAsync(snapshot => (int?)snapshot.ClientCount, cancellationToken) ?? 0;
+                        .MaxAsync(snapshot => (int?) snapshot.ClientCount, cancellationToken) ?? 0;
                 }
 
                 else
                 {
                     maxClients = await snapshots.Where(snapshot => snapshot.CapturedAt >= oldestEntry)
                         .GroupBy(snapshot => snapshot.PeriodBlock)
-                        .Select(grp => grp.Sum(snapshot => (int?)snapshot.ClientCount))
+                        .Select(grp => grp.Sum(snapshot => (int?) snapshot.ClientCount))
                         .MaxAsync(cancellationToken) ?? 0;
                 }
 
@@ -95,5 +101,43 @@ namespace IW4MAdmin.Application.Misc
                 return (0, 0);
             }
         }
+
+        public async Task<IEnumerable<ClientHistoryInfo>> ClientHistoryAsync(TimeSpan? overPeriod = null, CancellationToken token = default)
+        {
+            _clientHistoryCache.SetCacheItem(async (set, cancellationToken) =>
+            {
+                var oldestEntry = overPeriod.HasValue
+                    ? DateTime.UtcNow - overPeriod.Value
+                    : DateTime.UtcNow.AddHours(-12);
+
+                var history = await set.Where(snapshot => snapshot.CapturedAt >= oldestEntry)
+                    .Select(snapshot =>
+                        new
+                        {
+                            snapshot.ServerId,
+                            snapshot.CapturedAt,
+                            snapshot.ClientCount
+                        })
+                    .OrderBy(snapshot => snapshot.CapturedAt)
+                    .ToListAsync(cancellationToken);
+
+                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()
+                }).ToList();
+            }, nameof(_clientHistoryCache), TimeSpan.MaxValue);
+
+            try
+            {
+                return await _clientHistoryCache.GetCacheItem(nameof(_clientHistoryCache), token);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Could not retrieve data for {Name}", nameof(ClientHistoryAsync));
+                return Enumerable.Empty<ClientHistoryInfo>();
+            }
+        }
     }
 }

Data/Data.csproj

@@ -8,7 +8,7 @@
     <PackageId>RaidMax.IW4MAdmin.Data</PackageId>
     <Title>RaidMax.IW4MAdmin.Data</Title>
     <Authors />
-    <PackageVersion>1.0.5</PackageVersion>
+    <PackageVersion>1.0.6</PackageVersion>
   </PropertyGroup>
   
   <ItemGroup>

Data/Helpers/DataValueCache.cs

@@ -22,33 +22,36 @@ namespace Data.Helpers
             public TimeSpan ExpirationTime { get; set; }
             public Func<DbSet<T>, CancellationToken, Task<V>> Getter { get; set; }
             public V Value { get; set; }
-            public bool IsExpired => (DateTime.Now - LastRetrieval.Add(ExpirationTime)).TotalSeconds > 0;
+
+            public bool IsExpired => ExpirationTime != TimeSpan.MaxValue &&
+                                     (DateTime.Now - LastRetrieval.Add(ExpirationTime)).TotalSeconds > 0;
         }
-        
+
         public DataValueCache(ILogger<DataValueCache<T, V>> logger, IDatabaseContextFactory contextFactory)
         {
             _logger = logger;
             _contextFactory = contextFactory;
         }
-        
+
-        public void SetCacheItem(Func<DbSet<T>, CancellationToken, Task<V>> getter, string key, TimeSpan? expirationTime = null)
+        public void SetCacheItem(Func<DbSet<T>, CancellationToken, Task<V>> getter, string key,
+            TimeSpan? expirationTime = null)
         {
             if (_cacheStates.ContainsKey(key))
             {
                 _logger.LogDebug("Cache key {key} is already added", key);
                 return;
             }
-            
+
             var state = new CacheState()
             {
                 Key = key,
                 Getter = getter,
                 ExpirationTime = expirationTime ?? TimeSpan.FromMinutes(DefaultExpireMinutes)
             };
-  
+
             _cacheStates.Add(key, state);
         }
-        
+
         public async Task<V> GetCacheItem(string keyName, CancellationToken cancellationToken = default)
         {
             if (!_cacheStates.ContainsKey(keyName))
@@ -58,7 +61,7 @@ namespace Data.Helpers
 
             var state = _cacheStates[keyName];
 
-            if (state.IsExpired)
+            if (state.IsExpired || state.Value == null)
             {
                 await RunCacheUpdate(state, cancellationToken);
             }

Plugins/AutomessageFeed/AutomessageFeed.csproj

@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.SyndicationFeed.ReaderWriter" Version="1.0.2" />
-    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.27.1" PrivateAssets="All" />
+    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.29.1" PrivateAssets="All" />
   </ItemGroup>
 
   <Target Name="PostBuild" AfterTargets="PostBuildEvent">

Plugins/IW4ScriptCommands/IW4ScriptCommands.csproj

@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.27.1" PrivateAssets="All" />
+    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.29.1" PrivateAssets="All" />
   </ItemGroup>
 
   <Target Name="PostBuild" AfterTargets="PostBuildEvent">

Plugins/LiveRadar/LiveRadar.csproj

@@ -23,7 +23,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.27.1" PrivateAssets="All" />
+    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.29.1" PrivateAssets="All" />
   </ItemGroup>
 
   <Target Name="PostBuild" AfterTargets="PostBuildEvent">

Plugins/Login/Login.csproj

@@ -19,7 +19,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.27.1" PrivateAssets="All" />
+    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.29.1" PrivateAssets="All" />
   </ItemGroup>
 
   <Target Name="PostBuild" AfterTargets="PostBuildEvent">

Plugins/ProfanityDeterment/ProfanityDeterment.csproj

@@ -16,7 +16,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.27.1" PrivateAssets="All" />
+    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.29.1" PrivateAssets="All" />
   </ItemGroup>
 
   <Target Name="PostBuild" AfterTargets="PostBuildEvent">

Plugins/Stats/Stats.csproj

@@ -17,7 +17,7 @@
   </PropertyGroup>
   
   <ItemGroup>
-    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.27.1" PrivateAssets="All" />
+    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.29.1" PrivateAssets="All" />
   </ItemGroup>
 
   <Target Name="PostBuild" AfterTargets="PostBuildEvent">

Plugins/Welcome/Welcome.csproj

@@ -20,7 +20,7 @@
   </Target>
 
   <ItemGroup>
-    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.27.1" PrivateAssets="All" />
+    <PackageReference Include="RaidMax.IW4MAdmin.SharedLibraryCore" Version="2021.8.29.1" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>

SharedLibraryCore/Configuration/ApplicationConfiguration.cs

@@ -141,7 +141,15 @@ namespace SharedLibraryCore.Configuration
         [LocalizedDisplayName(("WEBFRONT_CONFIGURATION_ENABLE_PRIVILEGED_USER_PRIVACY"))]
         public bool EnablePrivilegedUserPrivacy { get; set; }
 
+        [ConfigurationIgnore]
         public bool EnableImplicitAccountLinking { get; set; } = false;
+
+        [ConfigurationIgnore] 
+        public TimeSpan MaxClientHistoryTime { get; set; } = TimeSpan.FromHours(12);
+
+        [ConfigurationIgnore] 
+        public TimeSpan ServerDataCollectionInterval { get; set; } = TimeSpan.FromMinutes(5);
+        
         public Dictionary<Permission, string> OverridePermissionLevelNames { get; set; } = Enum
             .GetValues(typeof(Permission))
             .Cast<Permission>()

SharedLibraryCore/Dtos/ClientHistoryInfo.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+
+namespace SharedLibraryCore.Dtos
+{
+    public class ClientHistoryInfo
+    {
+        public long ServerId { get; set; }
+        public List<ClientCountSnapshot> ClientCounts { get; set; }
+    }
+
+    public class ClientCountSnapshot
+    {
+        public DateTime Time { get; set; }
+        public string TimeString => Time.ToString("yyyy-MM-ddTHH:mm:ssZ");
+        public int ClientCount { get; set; }
+    }
+}

SharedLibraryCore/Dtos/ServerInfo.cs

@@ -17,6 +17,7 @@ namespace SharedLibraryCore.Dtos
         public List<ChatInfo> ChatHistory { get; set; }
         public List<PlayerInfo> Players { get; set; }
         public Helpers.PlayerHistory[] PlayerHistory { get; set; }
+        public List<ClientCountSnapshot> ClientCountHistory { get; set; }
         public long ID { get; set; }
         public bool Online { get; set; }
         public string ConnectProtocolUrl { get; set; }

SharedLibraryCore/Helpers/PlayerHistory.cs

@@ -1,4 +1,5 @@
 using System;
+using SharedLibraryCore.Dtos;
 
 namespace SharedLibraryCore.Helpers
 {
@@ -31,5 +32,14 @@ namespace SharedLibraryCore.Helpers
         /// 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/Interfaces/IServerDataViewer.cs

@@ -1,6 +1,9 @@
 using System;
+using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
+using SharedLibraryCore.Dtos;
+using SharedLibraryCore.Helpers;
 
 namespace SharedLibraryCore.Interfaces
 {
@@ -22,8 +25,16 @@ namespace SharedLibraryCore.Interfaces
         /// Gets the total number of clients connected and total clients connected in the given time frame
         /// </summary>
         /// <param name="overPeriod">how far in the past to search</param>
-        /// <param name="token"></param>
+        /// <param name="token">CancellationToken</param>
         /// <returns></returns>
         Task<(int, int)> ClientCountsAsync(TimeSpan? overPeriod = null, CancellationToken token = default);
+
+        /// <summary>
+        /// Retrieves the client count and history over the given period
+        /// </summary>
+        /// <param name="overPeriod">how far in the past to search</param>
+        /// <param name="token">CancellationToken</param>
+        /// <returns></returns>
+        Task<IEnumerable<ClientHistoryInfo>> ClientHistoryAsync(TimeSpan? overPeriod = null, CancellationToken token = default);
     }
 }

SharedLibraryCore/SharedLibraryCore.csproj

@@ -4,7 +4,7 @@
     <OutputType>Library</OutputType>
     <TargetFramework>netcoreapp3.1</TargetFramework>
     <PackageId>RaidMax.IW4MAdmin.SharedLibraryCore</PackageId>
-    <Version>2021.8.27.1</Version>
+    <Version>2021.8.29.1</Version>
     <Authors>RaidMax</Authors>
     <Company>Forever None</Company>
     <Configurations>Debug;Release;Prerelease</Configurations>
@@ -19,7 +19,7 @@
     <IsPackable>true</IsPackable>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <Description>Shared Library for IW4MAdmin</Description>
-    <PackageVersion>2021.8.27.1</PackageVersion>
+    <PackageVersion>2021.8.29.1</PackageVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Prerelease|AnyCPU'">
@@ -44,7 +44,7 @@
     <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="3.1.10" />
     <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="3.1.10" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
-    <PackageReference Include="RaidMax.IW4MAdmin.Data" Version="1.0.5" />
+    <PackageReference Include="RaidMax.IW4MAdmin.Data" Version="1.0.6" />
     <PackageReference Include="Serilog.AspNetCore" Version="3.4.0" />
     <PackageReference Include="SimpleCrypto.NetCore" Version="1.0.0" />
   </ItemGroup>

WebfrontCore/ViewComponents/ServerListViewComponent.cs

@@ -1,45 +1,94 @@
-using Microsoft.AspNetCore.Mvc;
+using System;
+using System.Collections.Generic;
+using Microsoft.AspNetCore.Mvc;
 using SharedLibraryCore;
 using SharedLibraryCore.Dtos;
 using System.Linq;
 using System.Net;
+using System.Threading;
+using System.Threading.Tasks;
 using Data.Models.Client.Stats;
+using Microsoft.AspNetCore.Hosting.Server;
+using SharedLibraryCore.Configuration;
+using SharedLibraryCore.Interfaces;
 using static SharedLibraryCore.Server;
 
 namespace WebfrontCore.ViewComponents
 {
     public class ServerListViewComponent : ViewComponent
     {
+        private readonly IServerDataViewer _serverDataViewer;
+        private readonly ApplicationConfiguration _appConfig;
+
+        public ServerListViewComponent(IServerDataViewer serverDataViewer,
+            ApplicationConfiguration applicationConfiguration)
+        {
+            _serverDataViewer = serverDataViewer;
+            _appConfig = applicationConfiguration;
+        }
+
         public IViewComponentResult Invoke(Game? game)
         {
-            var servers = Program.Manager.GetServers().Where(_server => !game.HasValue || _server.GameName == game);
+            var servers = Program.Manager.GetServers().Where(server => !game.HasValue || server.GameName == game);
 
-            var serverInfo = servers.Select(s => new ServerInfo()
+            var serverInfo = new List<ServerInfo>();
+
+            foreach (var server in servers)
             {
-                Name = s.Hostname,
+                var serverId = server.GetIdForServer().Result;
-                ID = s.EndPoint,
+                var clientHistory = _serverDataViewer.ClientHistoryAsync(_appConfig.MaxClientHistoryTime,
-                Port = s.Port,
+                                            CancellationToken.None).Result
-                Map = s.CurrentMap.Alias,
+                                        .FirstOrDefault(history => history.ServerId == serverId) ??
-                ClientCount = s.ClientNum,
+                                    new ClientHistoryInfo
-                MaxClients = s.MaxClients,
+                                    {
-                GameType = s.Gametype,
+                                        ServerId = serverId
-                PlayerHistory = s.ClientHistory.ToArray(),
+                                    };
-                Players = s.GetClientsAsList()
+
-                .Select(p => new PlayerInfo()
+                var counts = clientHistory.ClientCounts?.AsEnumerable() ?? Enumerable.Empty<ClientCountSnapshot>();
+
+                if (server.ClientHistory.Count > 0)
                 {
-                    Name = p.Name,
+                    counts = counts.Union(server.ClientHistory
-                    ClientId = p.ClientId,
+                        .Select(history => history.ToClientCountSnapshot()).Where(history =>
-                    Level = p.Level.ToLocalizedLevelName(),
+                            history.Time > clientHistory.ClientCounts.Last().Time));
-                    LevelInt = (int)p.Level,
+                }
-                    Tag = p.Tag,
+
-                    ZScore = p.GetAdditionalProperty<EFClientStatistics>(IW4MAdmin.Plugins.Stats.Helpers.StatManager.CLIENT_STATS_KEY)?.ZScore
+                serverInfo.Add(new ServerInfo()
-                }).ToList(),
+                {
-                ChatHistory = s.ChatHistory.ToList(),
+                    Name = server.Hostname,
-                Online = !s.Throttled,
+                    ID = server.EndPoint,
-                IPAddress = $"{(s.ResolvedIpEndPoint.Address.IsInternal() ? Program.Manager.ExternalIPAddress : s.IP)}:{s.Port}",
+                    Port = server.Port,
-                ConnectProtocolUrl = s.EventParser.URLProtocolFormat.FormatExt(s.ResolvedIpEndPoint.Address.IsInternal() ? Program.Manager.ExternalIPAddress : s.IP, s.Port)
+                    Map = server.CurrentMap.Alias,
-            }).ToList();
+                    ClientCount = server.ClientNum,
+                    MaxClients = server.MaxClients,
+                    GameType = server.Gametype,
+                    PlayerHistory = server.ClientHistory.ToArray(),
+                    Players = server.GetClientsAsList()
+                        .Select(p => new PlayerInfo()
+                        {
+                            Name = p.Name,
+                            ClientId = p.ClientId,
+                            Level = p.Level.ToLocalizedLevelName(),
+                            LevelInt = (int) p.Level,
+                            Tag = p.Tag,
+                            ZScore = p.GetAdditionalProperty<EFClientStatistics>(IW4MAdmin.Plugins.Stats.Helpers
+                                .StatManager
+                                .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}",
+                    ConnectProtocolUrl = server.EventParser.URLProtocolFormat.FormatExt(
+                        server.ResolvedIpEndPoint.Address.IsInternal() ? Program.Manager.ExternalIPAddress : server.IP,
+                        server.Port)
+                });
+            }
+
             return View("_List", serverInfo);
         }
     }
-}
+}

WebfrontCore/Views/Server/_Server.cshtml

@@ -50,5 +50,8 @@
 </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-online="@Model.Online"></div>
+    <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>

WebfrontCore/wwwroot/js/server.js

@@ -2,7 +2,8 @@
     ///////////////////////////////////////
     // thanks to canvasjs :(
     playerHistory.forEach(function (item, i) {
-        playerHistory[i].x = new Date(playerHistory[i].x);
+        playerHistory[i].x = new Date(playerHistory[i].timeString);
+        playerHistory[i].y = playerHistory[i].clientCount;
     });
 
     return new CanvasJS.Chart(`server_history_${i}`, {
@@ -84,7 +85,7 @@ $(document).ready(function () {
     });
 
     $('.server-history-row').each(function (index, element) {
-        let clientHistory = $(this).data('clienthistory');
+        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');