added GetSessionByPlayerId to Server API

Author: Kevin Jensen

Source/Plex.ServerApi/Clients/PlexServerClient.cs

@@ -2,6 +2,7 @@ namespace Plex.ServerApi.Clients
 {
     using System;
     using System.Collections.Generic;
+    using System.Linq;
     using System.Net.Http;
     using System.Threading.Tasks;
     using Api;
@@ -245,9 +246,26 @@ public async Task<SessionContainer> GetSessionsAsync(string authToken, string pl
         }
 
         /// <inheritdoc/>
-        public Task<SessionContainer> GetSessionByPlayerIdAsync(string authToken, string plexServerHost,
+        public async Task<SessionContainer> GetSessionByPlayerIdAsync(string authToken, string plexServerHost,
             string playerKey)
-            => throw new NotImplementedException();
+        {
+            var sessionContainer = await this.GetSessionsAsync(authToken, plexServerHost);
+
+            var sessionMetadata = sessionContainer.Metadata.SingleOrDefault(c => c.Player.MachineIdentifier == playerKey);
+
+            if (sessionMetadata != null)
+            {
+                sessionContainer.Size = 1;
+                sessionContainer.Metadata = new List<SessionMetadata> {sessionMetadata};
+            }
+            else
+            {
+                sessionContainer.Size = 0;
+                sessionContainer.Metadata = null;
+            }
+
+            return sessionContainer;
+        }
 
         /// <inheritdoc/>
         public async Task UnScrobbleItemAsync(string authToken, string plexServerHost, string key)

Tests/Plex.Library.Test/Tests/ServerTest.cs

@@ -47,6 +47,27 @@ public async void Test_GetPlayHistory()
             Assert.True(server.Size > 0);
         }
 
+        [Fact]
+        public async void Test_GetPlexServer_GetSessions()
+        {
+            var session = await this.plexServerClient.GetSessionsAsync(this.config.AuthenticationKey,
+                this.config.Host);
+
+            Assert.NotNull(session);
+            Assert.True(session.Size > 0);
+        }
+
+        [Fact]
+        public async void Test_GetPlexServer_GetSessionByPlayer()
+        {
+            const string playerKey = "jjmgbymh449v5jc7ip90sbj7";
+            var session = await this.plexServerClient.GetSessionByPlayerIdAsync(this.config.AuthenticationKey,
+                this.config.Host, playerKey);
+
+            Assert.NotNull(session);
+            Assert.True(session.Size > 0);
+        }
+
         [Fact]
         public async void Test_GetPosterArt()
         {