adding destroy multiple for mastofe

lib/pleroma/notification.ex

@@ -98,6 +98,14 @@ def clear(user) do
     |> Repo.delete_all()
   end
 
+  def destroy_multiple(%{id: user_id} = _user, ids) do
+    from(n in Notification,
+      where: n.id in ^ids,
+      where: n.user_id == ^user_id
+    )
+    |> Repo.delete_all()
+  end
+
   def dismiss(%{id: user_id} = _user, id) do
     notification = Repo.get(Notification, id)
 
@@ -173,8 +181,7 @@ def skip?(:local, %{local: false}, %{info: %{notification_settings: %{"remote" =
   def skip?(:muted, activity, user) do
     actor = activity.data["actor"]
 
-    User.mutes?(user, %{ap_id: actor}) or
-      CommonAPI.thread_muted?(user, activity)
+    User.mutes?(user, %{ap_id: actor}) or CommonAPI.thread_muted?(user, activity)
   end
 
   def skip?(

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

@@ -612,6 +612,11 @@ def dismiss_notification(%{assigns: %{user: user}} = conn, %{"id" => id} = _para
     end
   end
 
+  def destroy_multiple(%{assigns: %{user: user}} = conn, %{"ids" => ids} = _params) do
+    Notification.destroy_multiple(user, ids)
+    json(conn, %{})
+  end
+
   def relationships(%{assigns: %{user: user}} = conn, %{"id" => id}) do
     id = List.wrap(id)
     q = from(u in User, where: u.id in ^id)

lib/pleroma/web/router.ex

@@ -261,6 +261,7 @@ defmodule Pleroma.Web.Router do
       post("/notifications/dismiss", MastodonAPIController, :dismiss_notification)
       get("/notifications", MastodonAPIController, :notifications)
       get("/notifications/:id", MastodonAPIController, :get_notification)
+      delete("/notifications/destroy_multiple", MastodonAPIController, :destroy_multiple)
 
       get("/scheduled_statuses", MastodonAPIController, :scheduled_statuses)
       get("/scheduled_statuses/:id", MastodonAPIController, :show_scheduled_status)

test/web/mastodon_api/mastodon_api_controller_test.exs

@@ -944,6 +944,58 @@ test "filters notifications using exclude_types", %{conn: conn} do
 
       assert [%{"id" => ^reblog_notification_id}] = json_response(conn_res, 200)
     end
+
+    test "destroy multiple", %{conn: conn} do
+      user = insert(:user)
+      other_user = insert(:user)
+
+      {:ok, activity1} = CommonAPI.post(other_user, %{"status" => "hi @#{user.nickname}"})
+      {:ok, activity2} = CommonAPI.post(other_user, %{"status" => "hi @#{user.nickname}"})
+      {:ok, activity3} = CommonAPI.post(user, %{"status" => "hi @#{other_user.nickname}"})
+      {:ok, activity4} = CommonAPI.post(user, %{"status" => "hi @#{other_user.nickname}"})
+
+      notification1_id = Repo.get_by(Notification, activity_id: activity1.id).id |> to_string()
+      notification2_id = Repo.get_by(Notification, activity_id: activity2.id).id |> to_string()
+      notification3_id = Repo.get_by(Notification, activity_id: activity3.id).id |> to_string()
+      notification4_id = Repo.get_by(Notification, activity_id: activity4.id).id |> to_string()
+
+      conn =
+        conn
+        |> assign(:user, user)
+
+      conn_res =
+        conn
+        |> get("/api/v1/notifications")
+
+      result = json_response(conn_res, 200)
+      assert [%{"id" => ^notification2_id}, %{"id" => ^notification1_id}] = result
+
+      conn2 =
+        conn
+        |> assign(:user, other_user)
+
+      conn_res =
+        conn2
+        |> get("/api/v1/notifications")
+
+      result = json_response(conn_res, 200)
+      assert [%{"id" => ^notification4_id}, %{"id" => ^notification3_id}] = result
+
+      conn_destroy =
+        conn
+        |> delete("/api/v1/notifications/destroy_multiple", %{
+          "ids" => [notification1_id, notification2_id]
+        })
+
+      assert json_response(conn_destroy, 200) == %{}
+
+      conn_res =
+        conn2
+        |> get("/api/v1/notifications")
+
+      result = json_response(conn_res, 200)
+      assert [%{"id" => ^notification4_id}, %{"id" => ^notification3_id}] = result
+    end
   end
 
   describe "reblogging" do