Mastodon API: Add `pleroma.unread_conversation_count` to the Account entity

CHANGELOG.md

@@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Pleroma API: `GET /api/v1/pleroma/accounts/:id/scrobbles` to get a list of recently scrobbled items
 - Pleroma API: `POST /api/v1/pleroma/scrobble` to scrobble a media item
 - Mastodon API: Add `upload_limit`, `avatar_upload_limit`, `background_upload_limit`, and `banner_upload_limit` to `/api/v1/instance`
+- Mastodon API: Add `pleroma.unread_conversation_count` to the Account entity
 
 ### Changed
 - **Breaking:** Elixir >=1.8 is now required (was >= 1.7)

docs/API/differences_in_mastoapi_responses.md

@@ -56,6 +56,7 @@ Has these additional fields under the `pleroma` object:
 - `settings_store`: A generic map of settings for frontends. Opaque to the backend. Only returned in `verify_credentials` and `update_credentials`
 - `chat_token`: The token needed for Pleroma chat. Only returned in `verify_credentials`
 - `deactivated`: boolean, true when the user is deactivated
+- `unread_conversation_count`: The count of unread conversations. Only returned to the account owner.
 
 ### Source
 

lib/pleroma/conversation.ex

@@ -67,6 +67,8 @@ defmodule Pleroma.Conversation do
 
       participations =
         Enum.map(users, fn user ->
+          User.increment_unread_conversation_count(conversation, user)
+
           {:ok, participation} =
             Participation.create_for_user_and_conversation(user, conversation, opts)
 

lib/pleroma/conversation/participation.ex

@@ -52,6 +52,15 @@ defmodule Pleroma.Conversation.Participation do
     participation
     |> read_cng(%{read: true})
     |> Repo.update()
+    |> case do
+      {:ok, participation} ->
+        participation = Repo.preload(participation, :user)
+        User.set_unread_conversation_count(participation.user)
+        {:ok, participation}
+
+      error ->
+        error
+    end
   end
 
   def mark_as_unread(participation) do
@@ -135,4 +144,12 @@ defmodule Pleroma.Conversation.Participation do
 
     {:ok, Repo.preload(participation, :recipients, force: true)}
   end
+
+  def unread_conversation_count_for_user(user) do
+    from(p in __MODULE__,
+      where: p.user_id == ^user.id,
+      where: not p.read,
+      select: %{count: count(p.id)}
+    )
+  end
 end

lib/pleroma/user.ex

@@ -11,6 +11,7 @@ defmodule Pleroma.User do
   alias Comeonin.Pbkdf2
   alias Ecto.Multi
   alias Pleroma.Activity
+  alias Pleroma.Conversation.Participation
   alias Pleroma.Delivery
   alias Pleroma.Keys
   alias Pleroma.Notification
@@ -842,6 +843,61 @@ defmodule Pleroma.User do
 
   def maybe_update_following_count(user), do: user
 
+  def set_unread_conversation_count(%User{local: true} = user) do
+    unread_query = Participation.unread_conversation_count_for_user(user)
+
+    User
+    |> join(:inner, [u], p in subquery(unread_query))
+    |> update([u, p],
+      set: [
+        info:
+          fragment(
+            "jsonb_set(?, '{unread_conversation_count}', ?::varchar::jsonb, true)",
+            u.info,
+            p.count
+          )
+      ]
+    )
+    |> where([u], u.id == ^user.id)
+    |> select([u], u)
+    |> Repo.update_all([])
+    |> case do
+      {1, [user]} -> set_cache(user)
+      _ -> {:error, user}
+    end
+  end
+
+  def set_unread_conversation_count(_), do: :noop
+
+  def increment_unread_conversation_count(conversation, %User{local: true} = user) do
+    unread_query =
+      Participation.unread_conversation_count_for_user(user)
+      |> where([p], p.conversation_id == ^conversation.id)
+
+    User
+    |> join(:inner, [u], p in subquery(unread_query))
+    |> update([u, p],
+      set: [
+        info:
+          fragment(
+            "jsonb_set(?, '{unread_conversation_count}', (coalesce((?->>'unread_conversation_count')::int, 0) + 1)::varchar::jsonb, true)",
+            u.info,
+            u.info
+          )
+      ]
+    )
+    |> where([u], u.id == ^user.id)
+    |> where([u, p], p.count == 0)
+    |> select([u], u)
+    |> Repo.update_all([])
+    |> case do
+      {1, [user]} -> set_cache(user)
+      _ -> {:error, user}
+    end
+  end
+
+  def increment_unread_conversation_count(_, _), do: :noop
+
   def remove_duplicated_following(%User{following: following} = user) do
     uniq_following = Enum.uniq(following)
 

lib/pleroma/user/info.ex

@@ -47,6 +47,7 @@ defmodule Pleroma.User.Info do
     field(:hide_followers, :boolean, default: false)
     field(:hide_follows, :boolean, default: false)
     field(:hide_favorites, :boolean, default: true)
+    field(:unread_conversation_count, :integer, default: 0)
     field(:pinned_activities, {:array, :string}, default: [])
     field(:email_notifications, :map, default: %{"digest" => false})
     field(:mascot, :map, default: nil)

lib/pleroma/web/mastodon_api/views/account_view.ex

@@ -167,6 +167,7 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
     |> maybe_put_chat_token(user, opts[:for], opts)
     |> maybe_put_activation_status(user, opts[:for])
     |> maybe_put_follow_requests_count(user, opts[:for])
+    |> maybe_put_unread_conversation_count(user, opts[:for])
   end
 
   defp username_from_nickname(string) when is_binary(string) do
@@ -248,6 +249,16 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
 
   defp maybe_put_activation_status(data, _, _), do: data
 
+  defp maybe_put_unread_conversation_count(data, %User{id: user_id} = user, %User{id: user_id}) do
+    data
+    |> Kernel.put_in(
+      [:pleroma, :unread_conversation_count],
+      user.info.unread_conversation_count
+    )
+  end
+
+  defp maybe_put_unread_conversation_count(data, _, _), do: data
+
   defp image_url(%{"url" => [%{"href" => href} | _]}), do: href
   defp image_url(_), do: nil
 end

priv/repo/migrations/20191005165212_add_unread_conversation_count_to_user_info.exs

@@ -0,0 +1,11 @@
+defmodule Pleroma.Repo.Migrations.AddUnreadConversationCountToUserInfo do
+  use Ecto.Migration
+
+  def up do
+    execute("""
+    update users set info = jsonb_set(info, '{unread_conversation_count}', 0::varchar::jsonb, true) where local=true
+    """)
+  end
+
+  def down, do: :ok
+end

test/conversation/participation_test.exs

@@ -6,6 +6,7 @@ defmodule Pleroma.Conversation.ParticipationTest do
   use Pleroma.DataCase
   import Pleroma.Factory
   alias Pleroma.Conversation.Participation
+  alias Pleroma.User
   alias Pleroma.Web.CommonAPI
 
   test "getting a participation will also preload things" do
@@ -30,6 +31,8 @@ defmodule Pleroma.Conversation.ParticipationTest do
     {:ok, activity} =
       CommonAPI.post(user, %{"status" => "Hey @#{other_user.nickname}.", "visibility" => "direct"})
 
+    user = User.get_cached_by_id(user.id)
+    other_user = User.get_cached_by_id(user.id)
     [participation] = Participation.for_user(user)
     participation = Pleroma.Repo.preload(participation, :recipients)
 
@@ -155,6 +158,7 @@ defmodule Pleroma.Conversation.ParticipationTest do
     [participation] = Participation.for_user_with_last_activity_id(user)
 
     participation = Repo.preload(participation, :recipients)
+    user = User.get_cached_by_id(user.id)
 
     assert participation.recipients |> length() == 1
     assert user in participation.recipients

test/web/mastodon_api/controllers/conversation_controller_test.exs

@@ -10,19 +10,23 @@ defmodule Pleroma.Web.MastodonAPI.ConversationControllerTest do
 
   import Pleroma.Factory
 
-  test "Conversations", %{conn: conn} do
+  test "returns a list of conversations", %{conn: conn} do
     user_one = insert(:user)
     user_two = insert(:user)
     user_three = insert(:user)
 
     {:ok, user_two} = User.follow(user_two, user_one)
 
+    assert User.get_cached_by_id(user_two.id).info.unread_conversation_count == 0
+
     {:ok, direct} =
       CommonAPI.post(user_one, %{
         "status" => "Hi @#{user_two.nickname}, @#{user_three.nickname}!",
         "visibility" => "direct"
       })
 
+    assert User.get_cached_by_id(user_two.id).info.unread_conversation_count == 1
+
     {:ok, _follower_only} =
       CommonAPI.post(user_one, %{
         "status" => "Hi @#{user_two.nickname}!",
@@ -52,23 +56,100 @@ defmodule Pleroma.Web.MastodonAPI.ConversationControllerTest do
     assert is_binary(res_id)
     assert unread == true
     assert res_last_status["id"] == direct.id
+    assert User.get_cached_by_id(user_one.id).info.unread_conversation_count == 1
+  end
+
+  test "updates the last_status on reply", %{conn: conn} do
+    user_one = insert(:user)
+    user_two = insert(:user)
+
+    {:ok, direct} =
+      CommonAPI.post(user_one, %{
+        "status" => "Hi @#{user_two.nickname}",
+        "visibility" => "direct"
+      })
+
+    {:ok, direct_reply} =
+      CommonAPI.post(user_two, %{
+        "status" => "reply",
+        "visibility" => "direct",
+        "in_reply_to_status_id" => direct.id
+      })
+
+    [%{"last_status" => res_last_status}] =
+      conn
+      |> assign(:user, user_one)
+      |> get("/api/v1/conversations")
+      |> json_response(200)
+
+    assert res_last_status["id"] == direct_reply.id
+  end
+
+  test "the user marks a conversation as read", %{conn: conn} do
+    user_one = insert(:user)
+    user_two = insert(:user)
+
+    {:ok, direct} =
+      CommonAPI.post(user_one, %{
+        "status" => "Hi @#{user_two.nickname}",
+        "visibility" => "direct"
+      })
+
+    [%{"id" => direct_conversation_id, "unread" => true}] =
+      conn
+      |> assign(:user, user_one)
+      |> get("/api/v1/conversations")
+      |> json_response(200)
+
+    %{"unread" => false} =
+      conn
+      |> assign(:user, user_one)
+      |> post("/api/v1/conversations/#{direct_conversation_id}/read")
+      |> json_response(200)
+
+    assert User.get_cached_by_id(user_one.id).info.unread_conversation_count == 0
+
+    # The conversation is marked as unread on reply
+    {:ok, _} =
+      CommonAPI.post(user_two, %{
+        "status" => "reply",
+        "visibility" => "direct",
+        "in_reply_to_status_id" => direct.id
+      })
+
+    [%{"unread" => true}] =
+      conn
+      |> assign(:user, user_one)
+      |> get("/api/v1/conversations")
+      |> json_response(200)
+
+    assert User.get_cached_by_id(user_one.id).info.unread_conversation_count == 1
+
+    # A reply doesn't increment the user's unread_conversation_count if the conversation is unread
+    {:ok, _} =
+      CommonAPI.post(user_two, %{
+        "status" => "reply",
+        "visibility" => "direct",
+        "in_reply_to_status_id" => direct.id
+      })
+
+    assert User.get_cached_by_id(user_one.id).info.unread_conversation_count == 1
+  end
+
+  test "(vanilla) Mastodon frontend behaviour", %{conn: conn} do
+    user_one = insert(:user)
+    user_two = insert(:user)
+
+    {:ok, direct} =
+      CommonAPI.post(user_one, %{
+        "status" => "Hi @#{user_two.nickname}!",
+        "visibility" => "direct"
+      })
 
-    # Apparently undocumented API endpoint
     res_conn =
       conn
       |> assign(:user, user_one)
-      |> post("/api/v1/conversations/#{res_id}/read")
-
-    assert response = json_response(res_conn, 200)
-    assert length(response["accounts"]) == 2
-    assert response["last_status"]["id"] == direct.id
-    assert response["unread"] == false
-
-    # (vanilla) Mastodon frontend behaviour
-    res_conn =
-      conn
-      |> assign(:user, user_one)
-      |> get("/api/v1/statuses/#{res_last_status["id"]}/context")
+      |> get("/api/v1/statuses/#{direct.id}/context")
 
     assert %{"ancestors" => [], "descendants" => []} == json_response(res_conn, 200)
   end

test/web/mastodon_api/views/account_view_test.exs

@@ -418,6 +418,27 @@ defmodule Pleroma.Web.MastodonAPI.AccountViewTest do
                following_count: 1
              } = AccountView.render("show.json", %{user: user, for: user})
     end
+
+    test "shows unread_conversation_count only to the account owner" do
+      user = insert(:user)
+      other_user = insert(:user)
+
+      {:ok, _activity} =
+        CommonAPI.post(user, %{
+          "status" => "Hey @#{other_user.nickname}.",
+          "visibility" => "direct"
+        })
+
+      user = User.get_cached_by_ap_id(user.ap_id)
+
+      assert AccountView.render("show.json", %{user: user, for: other_user})[:pleroma][
+               :unread_conversation_count
+             ] == nil
+
+      assert AccountView.render("show.json", %{user: user, for: user})[:pleroma][
+               :unread_conversation_count
+             ] == 1
+    end
   end
 
   describe "follow requests counter" do

test/web/pleroma_api/controllers/pleroma_api_controller_test.exs

@@ -8,6 +8,7 @@ defmodule Pleroma.Web.PleromaAPI.PleromaAPIControllerTest do
   alias Pleroma.Conversation.Participation
   alias Pleroma.Notification
   alias Pleroma.Repo
+  alias Pleroma.User
   alias Pleroma.Web.CommonAPI
 
   import Pleroma.Factory
@@ -73,6 +74,7 @@ defmodule Pleroma.Web.PleromaAPI.PleromaAPIControllerTest do
 
     participation = Repo.preload(participation, :recipients)
 
+    user = User.get_cached_by_id(user.id)
     assert [user] == participation.recipients
     assert other_user not in participation.recipients