GetCounters - but doesn't seem to work (at least in my installation)

Program.cs

@@ -16,8 +16,8 @@ namespace ttrss_co_client
             var apiLevel = await ttrssClient.GetApiLevel();
             Console.WriteLine($"api level: {apiLevel}");
 
-            var unread = await ttrssClient.GetUnread();
-            Console.WriteLine($"{unread} unread article{(unread == 1 ? "" : "s")}");
+            var counters = await ttrssClient.GetCounters(true, false, false, false);
+            Console.WriteLine($"{counters.Count()} counter{(counters.Count() == 1 ? "" : "s")} found");
             
             var loggedout = await ttrssClient.Logout();
             Console.WriteLine($"logged out: {loggedout}");

ttrss/ApiClient.cs

@@ -2,6 +2,7 @@ using System.Collections.Generic;
 using System.ComponentModel;
 using Newtonsoft.Json;
 using System.Net.Http.Json;
+using ttrss_co_client.ttrss.datastructures;
 
 // https://tt-rss.org/wiki/ApiReference
 
@@ -66,6 +67,28 @@ namespace ttrss_co_client.ttrss
             return await oneValueGet<int>("getUnread", "unread");
         }
 
+        ///<summary>at least in my installation, it doesn't seem to respect the parameters I give it, be it curl or here.</summary>
+        public async Task<IEnumerable<CounterInfo>> GetCounters(bool feeds = true, bool labels = true, bool categories = true, bool tags = false)
+        {
+            assertInitialized();
+            assertApiLevel(4);
+
+            var output_mode = "";
+            if (feeds) output_mode += "f";
+            if (labels) output_mode += "l";
+            if (categories) output_mode += "c";
+            if (tags) output_mode += "t";
+
+            var json = JsonContent.Create(new
+            {
+                op = "getCounters",
+                sid = this.SessionId,
+                output_mode = output_mode
+            });
+            var response = await (await httpClient.PostAsync(BaseURI, json)).Content.ReadAsStringAsync();
+            var apiResult = JsonConvert.DeserializeObject<ttrss.messages.CounterInfoResponse>(response);
+            return apiResult.content;
+        }
         public async Task GetFeeds(int cat_id, bool unread_only, int limit, int offset, bool include_nested)
         {
             assertInitialized();
@@ -138,11 +161,6 @@ namespace ttrss_co_client.ttrss
             assertInitialized();
             throw new NotImplementedException();
         }
-        public async Task GetCounters(bool actual_feeds = true, bool labels = true, bool categories = true, bool tags = false)
-        {
-            assertInitialized();
-            throw new NotImplementedException();
-        }
         public async Task GetLabels(int? article_id)
         {
             assertInitialized();
@@ -206,8 +224,8 @@ namespace ttrss_co_client.ttrss
 
         private async Task<T> oneValueGet<T>(string op, string key)
         {
-            //mostly you post {"op": "aThingToDo", "sid": "sessionId", "some other param": "some other value"}
-            //and get back something like {"seq": 0, "status", "content": {"the value you asked for": 0}}
+            //mostly you post {"op": "getAThing", "sid": "sessionId"}
+            //and get back something like {"seq": 0, "status": 0, "content": {"the value you asked for": 0}}
             var json = JsonContent.Create(new
             {
                 op = op,

ttrss/datastructures/CounterInfo.cs

@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+
+namespace ttrss_co_client.ttrss.datastructures
+{
+    ///<summary>"Counter Information" - not sure what that is</summary>
+    public class CounterInfo
+    {
+        //there's "global-unread", "subscribed-feeds", and the rest are ints
+        public string Id { get; set; }
+        public string Updated { get; set; }
+        public int? Counter { get; set; }
+        public int? AuxCounter { get; set; }
+        public int? Markedcounter { get; set; }
+        public string Description { get; set; }
+        public int? ts { get; set; }
+        public DateTime? TimeStamp 
+        { 
+            get 
+            {
+                if(ts != null)
+                {
+                    return  new DateTime(1970,1,1,0,0,0,0,System.DateTimeKind.Utc)
+                        .AddSeconds( ts.Value ).ToLocalTime();
+                }
+                else
+                {
+                    return null;
+                }
+            }
+        }
+        public string Error { get; set; }
+        public string Title { get; set; }
+    }
+}

ttrss/messages/CounterInfoResponse.cs

@@ -0,0 +1,9 @@
+using ttrss_co_client.ttrss.datastructures;
+
+namespace ttrss_co_client.ttrss.messages
+{
+    public class CounterInfoResponse : ApiResponse
+    {
+        public IEnumerable<CounterInfo> content { get; set; }
+    }
+}