.

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -319,6 +319,13 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  def unreact_with_emoji(user, reaction_id, option \\ []) do
+    with local <- Keyword.get(options, :local, true),
+         activity_id <- Keyword.get(options, :activity_id, nil),
+           %Activity{actor: ^user.ap_id} = reaction_activity <- Activity.get_by_ap_id(reaction_id),
+    unreact_data
+  end
+
   # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
   def like(
         %User{ap_id: ap_id} = user,

test/web/activity_pub/activity_pub_test.exs

@@ -760,6 +760,20 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
     end
   end
 
+  describe "unreacting to an object" do
+    test "adds an emoji reaction activity to the db" do
+      user = insert(:user)
+      reactor = insert(:user)
+      {:ok, activity} = CommonAPI.post(user, %{"status" => "YASSSS queen slay"})
+      assert object = Object.normalize(activity)
+
+      {:ok, reaction_activity, object} = ActivityPub.react_with_emoji(reactor, object, "🔥")
+      {:ok, unreaction_activity} = ActivityPub.unreact_with_emoji(reactor, reaction_activity.id)
+
+      IO.inspect(object)
+    end
+  end
+
   describe "like an object" do
     test_with_mock "sends an activity to federation", Pleroma.Web.Federator, [:passthrough], [] do
       Pleroma.Config.put([:instance, :federating], true)

test/web/common_api/common_api_test.exs

@@ -236,6 +236,16 @@ defmodule Pleroma.Web.CommonAPITest do
       # TODO: test error case.
     end
 
+    test "unreacting to a status with an emoji" do
+      user = insert(:user)
+      other_user = insert(:user)
+
+      {:ok, activity} = CommonAPI.post(other_user, %{"status" => "cofe"})
+      {:ok, reaction, _} = CommonAPI.react_with_emoji(activity.id, user, "👍")
+
+      assert false
+    end
+
     test "repeating a status" do
       user = insert(:user)
       other_user = insert(:user)

test/web/pleroma_api/pleroma_api_controller_test.exs

@@ -27,6 +27,22 @@ defmodule Pleroma.Web.PleromaAPI.PleromaAPIControllerTest do
     assert to_string(activity.id) == id
   end
 
+  test "POST /api/v1/pleroma/statuses/:id/unreact_with_emoji", %{conn: conn} do
+    user = insert(:user)
+    other_user = insert(:user)
+
+    {:ok, activity} = CommonAPI.post(user, %{"status" => "#cofe"})
+    {:ok, activity, _object} = CommonAPI.react_with_emoji(activity.id, other_user, "☕")
+
+    result =
+      conn
+      |> assign(:user, other_user)
+      |> post("/api/v1/pleroma/statuses/#{activity.id}/unreact_with_emoji", %{"emoji" => "☕"})
+
+    assert %{"id" => id} = json_response(result, 200)
+    assert to_string(activity.id) == id
+  end
+
   test "GET /api/v1/pleroma/statuses/:id/emoji_reactions_by", %{conn: conn} do
     user = insert(:user)
     other_user = insert(:user)