get tree

ttrss/ApiClient.cs

@@ -708,11 +708,20 @@ namespace ttrss_co_client.ttrss
 
             return apiResponse.ContainsKey("status") && apiResponse["status"]?.ToLower() == "ok";
         }
-        public async Task GetFeedTree()
+        ///<returns>(almost) the whole shebang, for a user</returns>
+        public async Task<Tree> GetFeedTree(bool include_empty = false)
         {
             assertInitialized();
             assertApiLevel(5);
-            throw new NotImplementedException();
+
+            var json = JsonContent.Create(new
+            {
+                op = "getFeedTree",
+                sid = this.SessionId,
+                include_empty = include_empty
+            });
+
+            return await get<Tree>(json);
         }
         private void assertInitialized()
         {

ttrss/datastructures/Tree.cs

@@ -0,0 +1,32 @@
+using System.Collections.Generic;
+
+namespace ttrss_co_client.ttrss.datastructures
+{
+    public class Tree
+    {
+        public ItemCollection categories { get; set; }
+
+        public class ItemCollection
+        {
+            public string identifier { get; set; }
+            public string label { get; set; }
+            public IEnumerable<Item> items { get; set; }
+            public class Item
+            {
+                public string id { get; set; }
+                public int? bare_id { get; set; }
+                public int? auxcounter { get; set; }
+                public string name { get; set; }
+                public IEnumerable<Item> items { get; set; }
+                public bool? checkbox { get; set; }
+                public string type { get; set; }
+                public int? unread { get; set; }
+                public int? child_unread { get; set; }
+                public string param { get; set; }
+                public string fg_color { get; set; }
+                public string bg_color { get; set; }
+                public int? updates_disabled { get; set; }
+            }
+        }
+    }
+}