feat: add id based to target update

src/IStreamFeed.cs

@@ -109,5 +109,15 @@ Task<UpdateToTargetsResponse> UpdateActivityToTargetsAsync(ForeignIdTime foreign
             IEnumerable<string> adds = null,
             IEnumerable<string> newTargets = null,
             IEnumerable<string> removed = null);
+
+        /// <summary>
+        /// Updates the "to" targets for the provided activity, with the options passed
+        /// as argument for replacing, adding, or removing to targets.
+        /// </summary>
+        /// <remarks>https://getstream.io/activity-feeds/docs/dotnet-csharp/feeds_101/?language=csharp</remarks>
+        Task<UpdateToTargetsResponse> UpdateActivityToTargetsAsync(string id,
+            IEnumerable<string> adds = null,
+            IEnumerable<string> newTargets = null,
+            IEnumerable<string> removed = null);
     }
 }

src/StreamFeed.cs

@@ -126,6 +126,34 @@ public async Task<GenericGetResponse<Activity>> GetActivitiesAsync(int offset =
             throw StreamException.FromResponse(response);
         }
 
+        public async Task<UpdateToTargetsResponse> UpdateActivityToTargetsAsync(string id,
+            IEnumerable<string> adds = null,
+            IEnumerable<string> newTargets = null,
+            IEnumerable<string> removed = null)
+        {
+            adds?.ForEach(FeedIdValidator.ThrowIfFeedIdIsInvalid);
+            newTargets?.ForEach(FeedIdValidator.ThrowIfFeedIdIsInvalid);
+            removed?.ForEach(FeedIdValidator.ThrowIfFeedIdIsInvalid);
+
+            var payload = new
+            {
+                id = id,
+                added_targets = adds,
+                new_targets = newTargets,
+                removed_targets = removed,
+            };
+
+            var endpoint = $"feed_targets/{_feedSlug}/{_userId}/activity_to_targets/";
+            var request = _client.BuildAppRequest(endpoint, HttpMethod.Post);
+            request.SetJsonBody(StreamJsonConverter.SerializeObject(payload));
+            var response = await _client.MakeRequestAsync(request);
+
+            if (response.StatusCode == HttpStatusCode.Created)
+                return StreamJsonConverter.DeserializeObject<UpdateToTargetsResponse>(response.Content);
+
+            throw StreamException.FromResponse(response);
+        }
+
         public async Task<UpdateToTargetsResponse> UpdateActivityToTargetsAsync(ForeignIdTime foreignIdTime,
             IEnumerable<string> adds = null,
             IEnumerable<string> newTargets = null,

tests/ActivityTests/UpdateActivityTests.cs

@@ -135,7 +135,7 @@ public async Task TestUpdateToTargets()
 
             // remove 1
             var remove = targets[0];
-            updateResp = await this.UserFeed.UpdateActivityToTargetsAsync(fidTime, null, null, new[] { remove });
+            updateResp = await this.UserFeed.UpdateActivityToTargetsAsync(insertedAct.Id, null, null, new[] { remove });
             Assert.AreEqual(insertedAct.Id, updateResp.Activity.Id);
             Assert.AreEqual(1, updateResp.Removed.Count);
             Assert.AreEqual(remove, updateResp.Removed[0]);
@@ -277,4 +277,4 @@ public async Task TestActivityPartialUpdateByID()
             Assert.AreEqual("zyx", updatedAct.GetData<string>("custom_thing"));
         }
     }
-}
+}