add activity log feature

MediaBrowser.Api/System/ActivityLogService.cs

@@ -0,0 +1,44 @@
+using MediaBrowser.Controller.Activity;
+using MediaBrowser.Controller.Net;
+using MediaBrowser.Model.Activity;
+using MediaBrowser.Model.Querying;
+using ServiceStack;
+
+namespace MediaBrowser.Api.System
+{
+    [Route("/System/ActivityLog/Entries", "GET", Summary = "Gets activity log entries")]
+    public class GetActivityLogs : IReturn<QueryResult<ActivityLogEntry>>
+    {
+        /// <summary>
+        /// Skips over a given number of items within the results. Use for paging.
+        /// </summary>
+        /// <value>The start index.</value>
+        [ApiMember(Name = "StartIndex", Description = "Optional. The record index to start at. All items with a lower index will be dropped from the results.", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "GET")]
+        public int? StartIndex { get; set; }
+
+        /// <summary>
+        /// The maximum number of items to return
+        /// </summary>
+        /// <value>The limit.</value>
+        [ApiMember(Name = "Limit", Description = "Optional. The maximum number of records to return", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "GET")]
+        public int? Limit { get; set; }
+    }
+
+    [Authenticated]
+    public class ActivityLogService : BaseApiService
+    {
+        private readonly IActivityManager _activityManager;
+
+        public ActivityLogService(IActivityManager activityManager)
+        {
+            _activityManager = activityManager;
+        }
+
+        public object Get(GetActivityLogs request)
+        {
+            var result = _activityManager.GetActivityLogEntries(request.StartIndex, request.Limit);
+
+            return ToOptimizedResult(result);
+        }
+    }
+}