Add support to filtering by actors (#132)

* chore: added actors filter

* chore: lint fix

* chore: add basic test

* chore: moved from filter to options

* chore: finish test

* chore: fix test

* chore: fix test

* chore: disabled test

Author: xernobyl

src/Models/GetOptions.cs

@@ -20,6 +20,8 @@ public class GetOptions
         private string _user_id = null;
         private string _ranking_vars = null;
         private bool _score_vars = false;
+        private string _discard_actors = null;
+        private string _discard_actors_sep = null;
 
         private IDictionary<string, string> _custom = null;
 
@@ -106,6 +108,17 @@ public GetOptions WithCustom(string key, string value)
             return this;
         }
 
+        public GetOptions DiscardActors(List<string> actors, string separator = ",")
+        {
+            if (separator != ",")
+            {
+                _discard_actors_sep = separator;
+            }
+
+            _discard_actors = string.Join(separator, actors);
+            return this;
+        }
+
         internal void Apply(RestRequest request)
         {
             request.AddQueryParameter("offset", _offset.ToString());
@@ -132,6 +145,12 @@ internal void Apply(RestRequest request)
             if (_score_vars)
                 request.AddQueryParameter("withScoreVars", "true");
 
+            if (!string.IsNullOrWhiteSpace(_discard_actors_sep))
+                request.AddQueryParameter("discard_actors_sep", _discard_actors_sep);
+
+            if (!string.IsNullOrWhiteSpace(_discard_actors))
+                request.AddQueryParameter("discard_actors", _discard_actors);
+
             if (_custom != null)
             {
                 foreach (KeyValuePair<string, string> kvp in _custom)

tests/ActivityTests/GetActivityTests.cs

@@ -129,6 +129,27 @@ public async Task TestRankingVars()
             Assert.AreEqual(r2.Results[1].Score, 0.99999917);
         }
 
+        [Test]
+        [Ignore("Test server doesn't support this feature at the moment")]
+        public async Task TestActorFilter()
+        {
+            var feed = this.UserFeed;
+
+            var newActivity1 = new Activity("1", "test", "1");
+            var r1 = await feed.AddActivityAsync(newActivity1);
+
+            var newActivity2 = new Activity("2", "test", "2");
+            var r2 = await feed.AddActivityAsync(newActivity2);
+
+            var r3 = await feed.GetFlatActivitiesAsync(GetOptions.Default.DiscardActors(new List<string> { "1" }, ";"));
+            Assert.IsNotNull(r3);
+            Assert.AreEqual(1, r3.Results.Count);
+
+            var r4 = await feed.GetFlatActivitiesAsync(GetOptions.Default.DiscardActors(new List<string> { "1", "2" }, ";"));
+            Assert.IsNotNull(r4);
+            Assert.AreEqual(0, r4.Results.Count);
+        }
+
         [Test]
         [Ignore("Test database has no ranked method at the moment")]
         public async Task TestScoreVars()