Allow to mark a single notification as read

lib/pleroma/notification.ex

@@ -13,6 +13,7 @@ defmodule Pleroma.Notification do
   alias Pleroma.Web.CommonAPI.Utils
 
   import Ecto.Query
+  import Ecto.Changeset
 
   schema "notifications" do
     field(:seen, :boolean, default: false)
@@ -22,6 +23,11 @@ defmodule Pleroma.Notification do
     timestamps()
   end
 
+  def changeset(%Notification{} = notification, attrs) do
+    notification
+    |> cast(attrs, [:seen])
+  end
+
   # TODO: Make generic and unify (see activity_pub.ex)
   defp restrict_max(query, %{"max_id" => max_id}) do
     from(activity in query, where: activity.id < ^max_id)
@@ -68,6 +74,14 @@ defmodule Pleroma.Notification do
     Repo.update_all(query, [])
   end
 
+  def read_one(%User{} = user, notification_id) do
+    with {:ok, %Notification{} = notification} <- get(user, notification_id) do
+      notification
+      |> changeset(%{seen: true})
+      |> Repo.update()
+    end
+  end
+
   def get(%{id: user_id} = _user, id) do
     query =
       from(

lib/pleroma/web/router.ex

@@ -190,6 +190,12 @@ defmodule Pleroma.Web.Router do
       post("/blocks_import", UtilController, :blocks_import)
       post("/follow_import", UtilController, :follow_import)
     end
+
+    scope [] do
+      pipe_through(:oauth_read)
+
+      post("/notifications/read", UtilController, :notifications_read)
+    end
   end
 
   scope "/oauth", Pleroma.Web.OAuth do

lib/pleroma/web/twitter_api/controllers/util_controller.ex

@@ -9,6 +9,7 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
 
   alias Comeonin.Pbkdf2
   alias Pleroma.Emoji
+  alias Pleroma.Notification
   alias Pleroma.PasswordResetToken
   alias Pleroma.Repo
   alias Pleroma.User
@@ -142,6 +143,17 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
     end
   end
 
+  def notifications_read(%{assigns: %{user: user}} = conn, %{"id" => notification_id}) do
+    with {:ok, _} <- Notification.read_one(user, notification_id) do
+      json(conn, %{status: "success"})
+    else
+      {:error, message} ->
+        conn
+        |> put_resp_content_type("application/json")
+        |> send_resp(403, Jason.encode!(%{"error" => message}))
+    end
+  end
+
   def config(conn, _params) do
     instance = Pleroma.Config.get(:instance)
     instance_fe = Pleroma.Config.get(:fe)