Add max concurrent players over 24 hours badge to home

SharedLibraryCore/Interfaces/IServerDataViewer.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace SharedLibraryCore.Interfaces
+{
+    /// <summary>
+    /// Exposes methods to get analytical data about server(s)
+    /// </summary>
+    public interface IServerDataViewer
+    {
+        /// <summary>
+        /// Retrieves the max concurrent clients over a give time period for all servers or given server id
+        /// </summary>
+        /// <param name="serverId">ServerId to query on</param>
+        /// <param name="overPeriod">how far in the past to search</param>
+        /// <param name="token">CancellationToken</param>
+        /// <returns></returns>
+        Task<int> MaxConcurrentClientsAsync(long? serverId = null, TimeSpan? overPeriod = null, CancellationToken token = default);
+        
+        /// <summary>
+        /// 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>
+        /// <returns></returns>
+        Task<(int, int)> ClientCountsAsync(TimeSpan? overPeriod = null, CancellationToken token = default);
+    }
+}