Replace `user.following` with Pleroma.FollowingRelationship

lib/mix/tasks/pleroma/database.ex

@@ -52,9 +52,9 @@ def run(["bump_all_conversations"]) do
   def run(["update_users_following_followers_counts"]) do
     start_pleroma()
 
-    users = Repo.all(User)
+    User
-    Enum.each(users, &User.remove_duplicated_following/1)
+    |> Repo.all()
-    Enum.each(users, &User.update_follower_count/1)
+    |> Enum.each(&User.update_follower_count/1)
   end
 
   def run(["prune_objects" | args]) do

lib/mix/tasks/pleroma/relay.ex

@@ -36,8 +36,9 @@ def run(["unfollow", target]) do
   def run(["list"]) do
     start_pleroma()
 
-    with %User{following: following} = _user <- Relay.get_actor() do
+    with %User{} = user <- Relay.get_actor() do
-      following
+      user
+      |> User.following()
       |> Enum.map(fn entry -> URI.parse(entry).host end)
       |> Enum.uniq()
       |> Enum.each(&shell_info(&1))

lib/mix/tasks/pleroma/user.ex

@@ -162,7 +162,7 @@ def run(["unsubscribe", nickname]) do
 
       user = User.get_cached_by_id(user.id)
 
-      if Enum.empty?(user.following) do
+      if Enum.empty?(User.get_friends(user)) do
         shell_info("Successfully unsubscribed all followers from #{user.nickname}")
       end
     else

lib/pleroma/bbs/handler.ex

@@ -97,7 +97,7 @@ def handle_command(state, "home") do
       |> Map.put("user", user)
 
     activities =
-      [user.ap_id | user.following]
+      [user.ap_id | Pleroma.User.following(user)]
       |> ActivityPub.fetch_activities(params)
 
     Enum.each(activities, fn activity ->

lib/pleroma/following_relationship.ex

@@ -0,0 +1,110 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.FollowingRelationship do
+  use Ecto.Schema
+
+  import Ecto.Changeset
+  import Ecto.Query
+
+  alias FlakeId.Ecto.CompatType
+  alias Pleroma.Repo
+  alias Pleroma.User
+
+  schema "following_relationships" do
+    field(:state, :string, default: "accept")
+
+    belongs_to(:follower, User, type: CompatType)
+    belongs_to(:following, User, type: CompatType)
+
+    timestamps()
+  end
+
+  def changeset(%__MODULE__{} = following_relationship, attrs) do
+    following_relationship
+    |> cast(attrs, [:state])
+    |> put_assoc(:follower, attrs.follower)
+    |> put_assoc(:following, attrs.following)
+    |> validate_required([:state, :follower, :following])
+  end
+
+  def get(%User{} = follower, %User{} = following) do
+    __MODULE__
+    |> where(follower_id: ^follower.id, following_id: ^following.id)
+    |> Repo.one()
+  end
+
+  def update(follower, following, "reject"), do: unfollow(follower, following)
+
+  def update(%User{} = follower, %User{} = following, state) do
+    case get(follower, following) do
+      nil ->
+        follow(follower, following, state)
+
+      following_relationship ->
+        following_relationship
+        |> cast(%{state: state}, [:state])
+        |> validate_required([:state])
+        |> Repo.update()
+    end
+  end
+
+  def follow(%User{} = follower, %User{} = following, state \\ "accept") do
+    %__MODULE__{}
+    |> changeset(%{follower: follower, following: following, state: state})
+    |> Repo.insert(on_conflict: :nothing)
+  end
+
+  def unfollow(%User{} = follower, %User{} = following) do
+    case get(follower, following) do
+      nil -> {:ok, nil}
+      %__MODULE__{} = following_relationship -> Repo.delete(following_relationship)
+    end
+  end
+
+  def follower_count(%User{} = user) do
+    %{followers: user, deactivated: false}
+    |> User.Query.build()
+    |> Repo.aggregate(:count, :id)
+  end
+
+  def following_count(%User{id: nil}), do: 0
+
+  def following_count(%User{} = user) do
+    %{friends: user, deactivated: false}
+    |> User.Query.build()
+    |> Repo.aggregate(:count, :id)
+  end
+
+  def get_follow_requests(%User{id: id}) do
+    __MODULE__
+    |> join(:inner, [r], f in assoc(r, :follower))
+    |> where([r], r.state == "pending")
+    |> where([r], r.following_id == ^id)
+    |> select([r, f], f)
+    |> Repo.all()
+  end
+
+  def following?(%User{id: follower_id}, %User{id: followed_id}) do
+    __MODULE__
+    |> where(follower_id: ^follower_id, following_id: ^followed_id, state: "accept")
+    |> Repo.exists?()
+  end
+
+  def following(%User{} = user) do
+    following =
+      __MODULE__
+      |> join(:inner, [r], u in User, on: r.following_id == u.id)
+      |> where([r], r.follower_id == ^user.id)
+      |> where([r], r.state == "accept")
+      |> select([r, u], u.follower_address)
+      |> Repo.all()
+
+    if user.nickname in [nil, "internal.fetch"] do
+      following
+    else
+      [user.follower_address | following]
+    end
+  end
+end

lib/pleroma/user.ex

@@ -13,6 +13,7 @@ defmodule Pleroma.User do
   alias Pleroma.Activity
   alias Pleroma.Conversation.Participation
   alias Pleroma.Delivery
+  alias Pleroma.FollowingRelationship
   alias Pleroma.Keys
   alias Pleroma.Notification
   alias Pleroma.Object
@@ -52,7 +53,6 @@ defmodule Pleroma.User do
     field(:password, :string, virtual: true)
     field(:password_confirmation, :string, virtual: true)
     field(:keys, :string)
-    field(:following, {:array, :string}, default: [])
     field(:ap_id, :string)
     field(:avatar, :map)
     field(:local, :boolean, default: true)
@@ -162,13 +162,7 @@ def restrict_deactivated(query) do
     )
   end
 
-  def following_count(%User{following: []}), do: 0
+  defdelegate following_count(user), to: FollowingRelationship
-
-  def following_count(%User{} = user) do
-    user
-    |> get_friends_query()
-    |> Repo.aggregate(:count, :id)
-  end
 
   defp truncate_if_exists(params, key, max_length) do
     if Map.has_key?(params, key) and is_binary(params[key]) do
@@ -216,7 +210,7 @@ def update_changeset(struct, params \\ %{}) do
     name_limit = Pleroma.Config.get([:instance, :user_name_length], 100)
 
     struct
-    |> cast(params, [:bio, :name, :avatar, :following])
+    |> cast(params, [:bio, :name, :avatar])
     |> unique_constraint(:nickname)
     |> validate_format(:nickname, local_nickname_regex())
     |> validate_length(:bio, max: bio_limit)
@@ -324,7 +318,6 @@ defp put_following_and_follower_address(changeset) do
     followers = ap_followers(%User{nickname: get_field(changeset, :nickname)})
 
     changeset
-    |> put_change(:following, [followers])
     |> put_change(:follower_address, followers)
   end
 
@@ -378,8 +371,11 @@ def needs_update?(%User{local: false} = user) do
   def needs_update?(_), do: true
 
   @spec maybe_direct_follow(User.t(), User.t()) :: {:ok, User.t()} | {:error, String.t()}
-  def maybe_direct_follow(%User{} = follower, %User{local: true, info: %{locked: true}}) do
+  def maybe_direct_follow(
-    {:ok, follower}
+        %User{} = follower,
+        %User{local: true, info: %{locked: true}} = followed
+      ) do
+    follow(follower, followed, "pending")
   end
 
   def maybe_direct_follow(%User{} = follower, %User{local: true} = followed) do
@@ -397,37 +393,22 @@ def maybe_direct_follow(%User{} = follower, %User{} = followed) do
   @doc "A mass follow for local users. Respects blocks in both directions but does not create activities."
   @spec follow_all(User.t(), list(User.t())) :: {atom(), User.t()}
   def follow_all(follower, followeds) do
-    followed_addresses =
+    followeds =
-      followeds
+      Enum.reject(followeds, fn followed ->
-      |> Enum.reject(fn followed -> blocks?(follower, followed) || blocks?(followed, follower) end)
+        blocks?(follower, followed) || blocks?(followed, follower)
-      |> Enum.map(fn %{follower_address: fa} -> fa end)
+      end)
 
-    q =
+    Enum.each(followeds, &follow(follower, &1, "accept"))
-      from(u in User,
-        where: u.id == ^follower.id,
-        update: [
-          set: [
-            following:
-              fragment(
-                "array(select distinct unnest (array_cat(?, ?)))",
-                u.following,
-                ^followed_addresses
-              )
-          ]
-        ],
-        select: u
-      )
-
-    {1, [follower]} = Repo.update_all(q, [])
 
     Enum.each(followeds, &update_follower_count/1)
 
     set_cache(follower)
   end
 
-  def follow(%User{} = follower, %User{info: info} = followed) do
+  defdelegate following(user), to: FollowingRelationship
+
+  def follow(%User{} = follower, %User{info: info} = followed, state \\ "accept") do
     deny_follow_blocked = Pleroma.Config.get([:user, :deny_follow_blocked])
-    ap_followers = followed.follower_address
 
     cond do
       info.deactivated ->
@@ -441,14 +422,7 @@ def follow(%User{} = follower, %User{info: info} = followed) do
           Websub.subscribe(follower, followed)
         end
 
-        q =
+        FollowingRelationship.follow(follower, followed, state)
-          from(u in User,
-            where: u.id == ^follower.id,
-            update: [push: [following: ^ap_followers]],
-            select: u
-          )
-
-        {1, [follower]} = Repo.update_all(q, [])
 
         follower = maybe_update_following_count(follower)
 
@@ -459,17 +433,8 @@ def follow(%User{} = follower, %User{info: info} = followed) do
   end
 
   def unfollow(%User{} = follower, %User{} = followed) do
-    ap_followers = followed.follower_address
-
     if following?(follower, followed) and follower.ap_id != followed.ap_id do
-      q =
+      FollowingRelationship.unfollow(follower, followed)
-        from(u in User,
-          where: u.id == ^follower.id,
-          update: [pull: [following: ^ap_followers]],
-          select: u
-        )
-
-      {1, [follower]} = Repo.update_all(q, [])
 
       follower = maybe_update_following_count(follower)
 
@@ -483,10 +448,7 @@ def unfollow(%User{} = follower, %User{} = followed) do
     end
   end
 
-  @spec following?(User.t(), User.t()) :: boolean
+  defdelegate following?(follower, followed), to: FollowingRelationship
-  def following?(%User{} = follower, %User{} = followed) do
-    Enum.member?(follower.following, followed.follower_address)
-  end
 
   def locked?(%User{} = user) do
     user.info.locked || false
@@ -707,16 +669,7 @@ def get_friends_ids(user, page \\ nil) do
     |> Repo.all()
   end
 
-  @spec get_follow_requests(User.t()) :: {:ok, [User.t()]}
+  defdelegate get_follow_requests(user), to: FollowingRelationship
-  def get_follow_requests(%User{} = user) do
-    user
-    |> Activity.follow_requests_for_actor()
-    |> join(:inner, [a], u in User, on: a.actor == u.ap_id)
-    |> where([a, u], not fragment("? @> ?", u.following, ^[user.follower_address]))
-    |> group_by([a, u], u.id)
-    |> select([a, u], u)
-    |> Repo.all()
-  end
 
   def increase_note_count(%User{} = user) do
     User
@@ -899,18 +852,6 @@ def increment_unread_conversation_count(conversation, %User{local: true} = user)
 
   def increment_unread_conversation_count(_, _), do: :noop
 
-  def remove_duplicated_following(%User{following: following} = user) do
-    uniq_following = Enum.uniq(following)
-
-    if length(following) == length(uniq_following) do
-      {:ok, user}
-    else
-      user
-      |> update_changeset(%{following: uniq_following})
-      |> update_and_set_cache()
-    end
-  end
-
   @spec get_users_from_set([String.t()], boolean()) :: [User.t()]
   def get_users_from_set(ap_ids, local_only \\ true) do
     criteria = %{ap_id: ap_ids, deactivated: false}

lib/pleroma/user/query.ex

@@ -28,6 +28,8 @@ defmodule Pleroma.User.Query do
   """
   import Ecto.Query
   import Pleroma.Web.AdminAPI.Search, only: [not_empty_string: 1]
+
+  alias Pleroma.FollowingRelationship
   alias Pleroma.User
 
   @type criteria ::
@@ -130,18 +132,40 @@ defp compose_query({:deactivated, true}, query) do
     |> where([u], not is_nil(u.nickname))
   end
 
-  defp compose_query({:followers, %User{id: id, follower_address: follower_address}}, query) do
+  defp compose_query({:followers, %User{id: id}}, query) do
-    where(query, [u], fragment("? <@ ?", ^[follower_address], u.following))
+    query
     |> where([u], u.id != ^id)
+    |> join(:inner, [u], r in FollowingRelationship,
+      as: :relationships,
+      on: r.following_id == ^id and r.follower_id == u.id
+    )
+    |> where([relationships: r], r.state == "accept")
   end
 
-  defp compose_query({:friends, %User{id: id, following: following}}, query) do
+  defp compose_query({:friends, %User{id: id}}, query) do
-    where(query, [u], u.follower_address in ^following)
+    query
     |> where([u], u.id != ^id)
+    |> join(:inner, [u], r in FollowingRelationship,
+      as: :relationships,
+      on: r.following_id == u.id and r.follower_id == ^id
+    )
+    |> where([relationships: r], r.state == "accept")
   end
 
   defp compose_query({:recipients_from_activity, to}, query) do
-    where(query, [u], u.ap_id in ^to or fragment("? && ?", u.following, ^to))
+    query
+    |> join(:left, [u], r in FollowingRelationship,
+      as: :relationships,
+      on: r.follower_id == u.id
+    )
+    |> join(:left, [relationships: r], f in User,
+      as: :following,
+      on: f.id == r.following_id
+    )
+    |> where(
+      [u, following: f, relationships: r],
+      u.ap_id in ^to or (f.follower_address in ^to and r.state == "accept")
+    )
   end
 
   defp compose_query({:order_by, key}, query) do

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -501,7 +501,9 @@ defp fetch_activities_for_context_query(context, opts) do
     public = [Pleroma.Constants.as_public()]
 
     recipients =
-      if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
+      if opts["user"],
+        do: [opts["user"].ap_id | User.following(opts["user"])] ++ public,
+        else: public
 
     from(activity in Activity)
     |> maybe_preload_objects(opts)
@@ -652,7 +654,7 @@ defp user_activities_recipients(%{"godmode" => true}) do
 
   defp user_activities_recipients(%{"reading_user" => reading_user}) do
     if reading_user do
-      [Pleroma.Constants.as_public()] ++ [reading_user.ap_id | reading_user.following]
+      [Pleroma.Constants.as_public()] ++ [reading_user.ap_id | User.following(reading_user)]
     else
       [Pleroma.Constants.as_public()]
     end

lib/pleroma/web/activity_pub/activity_pub_controller.ex

@@ -319,12 +319,12 @@ def read_inbox(
       when page? in [true, "true"] do
     activities =
       if params["max_id"] do
-        ActivityPub.fetch_activities([user.ap_id | user.following], %{
+        ActivityPub.fetch_activities([user.ap_id | User.following(user)], %{
           "max_id" => params["max_id"],
           "limit" => 10
         })
       else
-        ActivityPub.fetch_activities([user.ap_id | user.following], %{"limit" => 10})
+        ActivityPub.fetch_activities([user.ap_id | User.following(user)], %{"limit" => 10})
       end
 
     conn

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -7,6 +7,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   A module to handle coding from internal to wire ActivityPub and back.
   """
   alias Pleroma.Activity
+  alias Pleroma.FollowingRelationship
   alias Pleroma.Object
   alias Pleroma.Object.Containment
   alias Pleroma.Repo
@@ -474,7 +475,8 @@ def handle_incoming(
            {_, false} <- {:user_locked, User.locked?(followed)},
            {_, {:ok, follower}} <- {:follow, User.follow(follower, followed)},
            {_, {:ok, _}} <-
-             {:follow_state_update, Utils.update_follow_state_for_all(activity, "accept")} do
+             {:follow_state_update, Utils.update_follow_state_for_all(activity, "accept")},
+           {:ok, _relationship} <- FollowingRelationship.update(follower, followed, "accept") do
         ActivityPub.accept(%{
           to: [follower.ap_id],
           actor: followed,
@@ -484,6 +486,7 @@ def handle_incoming(
       else
         {:user_blocked, true} ->
           {:ok, _} = Utils.update_follow_state_for_all(activity, "reject")
+          {:ok, _relationship} = FollowingRelationship.update(follower, followed, "reject")
 
           ActivityPub.reject(%{
             to: [follower.ap_id],
@@ -494,6 +497,7 @@ def handle_incoming(
 
         {:follow, {:error, _}} ->
           {:ok, _} = Utils.update_follow_state_for_all(activity, "reject")
+          {:ok, _relationship} = FollowingRelationship.update(follower, followed, "reject")
 
           ActivityPub.reject(%{
             to: [follower.ap_id],
@@ -522,7 +526,7 @@ def handle_incoming(
          {:ok, follow_activity} <- get_follow_activity(follow_object, followed),
          {:ok, follow_activity} <- Utils.update_follow_state_for_all(follow_activity, "accept"),
          %User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
-         {:ok, _follower} = User.follow(follower, followed) do
+         {:ok, _relationship} <- FollowingRelationship.update(follower, followed, "accept") do
       ActivityPub.accept(%{
         to: follow_activity.data["to"],
         type: "Accept",
@@ -544,6 +548,7 @@ def handle_incoming(
          {:ok, follow_activity} <- get_follow_activity(follow_object, followed),
          {:ok, follow_activity} <- Utils.update_follow_state_for_all(follow_activity, "reject"),
          %User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
+         {:ok, _relationship} <- FollowingRelationship.update(follower, followed, "reject"),
          {:ok, activity} <-
            ActivityPub.reject(%{
              to: follow_activity.data["to"],
@@ -552,8 +557,6 @@ def handle_incoming(
              object: follow_activity.data["id"],
              local: false
            }) do
-      User.unfollow(follower, followed)
-
       {:ok, activity}
     else
       _e -> :error
@@ -1050,29 +1053,8 @@ defp strip_internal_tags(object), do: object
   def perform(:user_upgrade, user) do
     # we pass a fake user so that the followers collection is stripped away
     old_follower_address = User.ap_followers(%User{nickname: user.nickname})
-
-    q =
-      from(
-        u in User,
-        where: ^old_follower_address in u.following,
-        update: [
-          set: [
-            following:
-              fragment(
-                "array_replace(?,?,?)",
-                u.following,
-                ^old_follower_address,
-                ^user.follower_address
-              )
-          ]
-        ]
-      )
-
-    Repo.update_all(q, [])
-
     maybe_retire_websub(user.ap_id)
 
-    q =
     from(
       a in Activity,
       where: ^old_follower_address in a.recipients,
@@ -1088,8 +1070,7 @@ def perform(:user_upgrade, user) do
         ]
       ]
     )
-
+    |> Repo.update_all([])
-    Repo.update_all(q, [])
   end
 
   def upgrade_user_from_ap_id(ap_id) do

lib/pleroma/web/activity_pub/visibility.ex

@@ -58,7 +58,7 @@ def visible_for_user?(activity, nil) do
   end
 
   def visible_for_user?(activity, user) do
-    x = [user.ap_id | user.following]
+    x = [user.ap_id | User.following(user)]
     y = [activity.actor] ++ activity.data["to"] ++ (activity.data["cc"] || [])
     visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))
   end

lib/pleroma/web/common_api/common_api.ex

@@ -6,6 +6,7 @@ defmodule Pleroma.Web.CommonAPI do
   alias Pleroma.Activity
   alias Pleroma.ActivityExpiration
   alias Pleroma.Conversation.Participation
+  alias Pleroma.FollowingRelationship
   alias Pleroma.Object
   alias Pleroma.ThreadMute
   alias Pleroma.User
@@ -40,6 +41,7 @@ def accept_follow_request(follower, followed) do
     with {:ok, follower} <- User.follow(follower, followed),
          %Activity{} = follow_activity <- Utils.fetch_latest_follow(follower, followed),
          {:ok, follow_activity} <- Utils.update_follow_state_for_all(follow_activity, "accept"),
+         {:ok, _relationship} <- FollowingRelationship.update(follower, followed, "accept"),
          {:ok, _activity} <-
            ActivityPub.accept(%{
              to: [follower.ap_id],
@@ -54,6 +56,7 @@ def accept_follow_request(follower, followed) do
   def reject_follow_request(follower, followed) do
     with %Activity{} = follow_activity <- Utils.fetch_latest_follow(follower, followed),
          {:ok, follow_activity} <- Utils.update_follow_state_for_all(follow_activity, "reject"),
+         {:ok, _relationship} <- FollowingRelationship.update(follower, followed, "reject"),
          {:ok, _activity} <-
            ActivityPub.reject(%{
              to: [follower.ap_id],

lib/pleroma/web/mastodon_api/controllers/timeline_controller.ex

@@ -10,6 +10,7 @@ defmodule Pleroma.Web.MastodonAPI.TimelineController do
 
   alias Pleroma.Pagination
   alias Pleroma.Plugs.OAuthScopesPlug
+  alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
 
   plug(OAuthScopesPlug, %{scopes: ["read:statuses"]} when action in [:home, :direct])
@@ -28,7 +29,7 @@ def home(%{assigns: %{user: user}} = conn, params) do
       |> Map.put("muting_user", user)
       |> Map.put("user", user)
 
-    recipients = [user.ap_id | user.following]
+    recipients = [user.ap_id | User.following(user)]
 
     activities =
       recipients
@@ -128,9 +129,12 @@ def list(%{assigns: %{user: user}} = conn, %{"list_id" => id} = params) do
 
       # we must filter the following list for the user to avoid leaking statuses the user
       # does not actually have permission to see (for more info, peruse security issue #270).
+
+      user_following = User.following(user)
+
       activities =
         following
-        |> Enum.filter(fn x -> x in user.following end)
+        |> Enum.filter(fn x -> x in user_following end)
         |> ActivityPub.fetch_activities_bounded(following, params)
         |> Enum.reverse()
 

lib/pleroma/web/pleroma_api/controllers/account_controller.ex

@@ -132,7 +132,7 @@ def favourites(%{assigns: %{user: for_user, account: user}} = conn, params) do
 
     recipients =
       if for_user do
-        [Pleroma.Constants.as_public()] ++ [for_user.ap_id | for_user.following]
+        [Pleroma.Constants.as_public()] ++ [for_user.ap_id | User.following(for_user)]
       else
         [Pleroma.Constants.as_public()]
       end

priv/repo/migrations/20191007073319_create_following_relationships.exs

@@ -16,7 +16,7 @@ def change do
     execute(update_thread_visibility(), restore_thread_visibility())
   end
 
-  # The only difference with the original verion: `actor_user` replaced with `actor_user_following`
+  # The only difference between the original version: `actor_user` replaced with `actor_user_following`
   def update_thread_visibility do
     """
     CREATE OR REPLACE FUNCTION thread_visibility(actor varchar, activity_id varchar) RETURNS boolean AS $$

test/support/factory.ex

@@ -39,8 +39,7 @@ def user_factory do
       user
       | ap_id: User.ap_id(user),
         follower_address: User.ap_followers(user),
-        following_address: User.ap_following(user),
+        following_address: User.ap_following(user)
-        following: [User.ap_id(user)]
     }
   end
 

test/tasks/database_test.exs

@@ -72,25 +72,25 @@ test "it prunes old objects from the database" do
   describe "running update_users_following_followers_counts" do
     test "following and followers count are updated" do
       [user, user2] = insert_pair(:user)
-      {:ok, %User{following: following, info: info} = user} = User.follow(user, user2)
+      {:ok, %User{info: info} = user} = User.follow(user, user2)
+
+      following = User.following(user)
 
       assert length(following) == 2
       assert info.follower_count == 0
 
       {:ok, user} =
         user
-        |> Ecto.Changeset.change(%{following: following ++ following})
         |> User.change_info(&Ecto.Changeset.change(&1, %{follower_count: 3}))
         |> Repo.update()
 
-      assert length(user.following) == 4
       assert user.info.follower_count == 3
 
       assert :ok == Mix.Tasks.Pleroma.Database.run(["update_users_following_followers_counts"])
 
       user = User.get_by_id(user.id)
 
-      assert length(user.following) == 2
+      assert length(User.following(user)) == 2
       assert user.info.follower_count == 0
     end
   end

test/tasks/relay_test.exs

@@ -51,7 +51,7 @@ test "relay is unfollowed" do
       target_user = User.get_cached_by_ap_id(target_instance)
       follow_activity = Utils.fetch_latest_follow(local_user, target_user)
       User.follow(local_user, target_user)
-      assert "#{target_instance}/followers" in refresh_record(local_user).following
+      assert "#{target_instance}/followers" in User.following(local_user)
       Mix.Tasks.Pleroma.Relay.run(["unfollow", target_instance])
 
       cancelled_activity = Activity.get_by_ap_id(follow_activity.data["id"])
@@ -68,7 +68,7 @@ test "relay is unfollowed" do
       assert undo_activity.data["type"] == "Undo"
       assert undo_activity.data["actor"] == local_user.ap_id
       assert undo_activity.data["object"] == cancelled_activity.data
-      refute "#{target_instance}/followers" in refresh_record(local_user).following
+      refute "#{target_instance}/followers" in User.following(local_user)
     end
   end
 
@@ -78,20 +78,18 @@ test "Prints relay subscription list" do
 
       refute_receive {:mix_shell, :info, _}
 
-      Pleroma.Web.ActivityPub.Relay.get_actor()
+      relay_user = Relay.get_actor()
-      |> Ecto.Changeset.change(
+
-        following: [
+      ["http://mastodon.example.org/users/admin", "https://mstdn.io/users/mayuutann"]
-          "http://test-app.com/user/test1",
+      |> Enum.each(fn ap_id ->
-          "http://test-app.com/user/test1",
+        {:ok, user} = User.get_or_fetch_by_ap_id(ap_id)
-          "http://test-app-42.com/user/test1"
+        User.follow(relay_user, user)
-        ]
+      end)
-      )
-      |> Pleroma.User.update_and_set_cache()
 
       :ok = Mix.Tasks.Pleroma.Relay.run(["list"])
 
-      assert_receive {:mix_shell, :info, ["test-app.com"]}
+      assert_receive {:mix_shell, :info, ["mstdn.io"]}
-      assert_receive {:mix_shell, :info, ["test-app-42.com"]}
+      assert_receive {:mix_shell, :info, ["mastodon.example.org"]}
     end
   end
 end

test/tasks/user_test.exs

@@ -139,7 +139,8 @@ test "no user to toggle" do
   describe "running unsubscribe" do
     test "user is unsubscribed" do
       followed = insert(:user)
-      user = insert(:user, %{following: [User.ap_followers(followed)]})
+      user = insert(:user)
+      User.follow(user, followed, "accept")
 
       Mix.Tasks.Pleroma.User.run(["unsubscribe", user.nickname])
 
@@ -154,7 +155,7 @@ test "user is unsubscribed" do
       assert message =~ "Successfully unsubscribed"
 
       user = User.get_cached_by_nickname(user.nickname)
-      assert Enum.empty?(user.following)
+      assert Enum.empty?(User.get_friends(user))
       assert user.info.deactivated
     end
 

test/user_test.exs

@@ -88,10 +88,9 @@ test "doesn't return already accepted or duplicate follow requests" do
     CommonAPI.follow(pending_follower, locked)
     CommonAPI.follow(pending_follower, locked)
     CommonAPI.follow(accepted_follower, locked)
-    User.follow(accepted_follower, locked)
+    Pleroma.FollowingRelationship.update(accepted_follower, locked, "accept")
 
-    assert [activity] = User.get_follow_requests(locked)
+    assert [^pending_follower] = User.get_follow_requests(locked)
-    assert activity
   end
 
   test "clears follow requests when requester is blocked" do
@@ -136,10 +135,10 @@ test "follow_all follows mutliple users without duplicating" do
     followed_two = insert(:user)
 
     {:ok, user} = User.follow_all(user, [followed_zero, followed_one])
-    assert length(user.following) == 3
+    assert length(User.following(user)) == 3
 
     {:ok, user} = User.follow_all(user, [followed_one, followed_two])
-    assert length(user.following) == 4
+    assert length(User.following(user)) == 4
   end
 
   test "follow takes a user and another user" do
@@ -153,7 +152,7 @@ test "follow takes a user and another user" do
     followed = User.get_cached_by_ap_id(followed.ap_id)
     assert followed.info.follower_count == 1
 
-    assert User.ap_followers(followed) in user.following
+    assert User.ap_followers(followed) in User.following(user)
   end
 
   test "can't follow a deactivated users" do
@@ -198,7 +197,7 @@ test "local users do not automatically follow local locked accounts" do
   #   assert followed.local == false
 
   #   {:ok, user} = User.follow(user, followed)
-  #   assert User.ap_followers(followed) in user.following
+  #   assert User.ap_followers(followed) in User.following(user)
 
   #   query = from w in WebsubClientSubscription,
   #   where: w.topic == ^followed.info["topic"]
@@ -235,26 +234,29 @@ test "unfollow with syncronizes external user" do
           nickname: "fuser2",
           ap_id: "http://localhost:4001/users/fuser2",
           follower_address: "http://localhost:4001/users/fuser2/followers",
-          following_address: "http://localhost:4001/users/fuser2/following",
+          following_address: "http://localhost:4001/users/fuser2/following"
-          following: [User.ap_followers(followed)]
         })
 
+      {:ok, user} = User.follow(user, followed, "accept")
+
       {:ok, user, _activity} = User.unfollow(user, followed)
 
       user = User.get_cached_by_id(user.id)
 
-      assert user.following == []
+      assert User.following(user) == [user.follower_address]
     end
 
     test "unfollow takes a user and another user" do
       followed = insert(:user)
-      user = insert(:user, %{following: [User.ap_followers(followed)]})
+      user = insert(:user)
+
+      {:ok, user} = User.follow(user, followed, "accept")
+
+      assert User.following(user) == [user.follower_address, followed.follower_address]
 
       {:ok, user, _activity} = User.unfollow(user, followed)
 
-      user = User.get_cached_by_id(user.id)
+      assert User.following(user) == [user.follower_address]
-
-      assert user.following == []
     end
 
     test "unfollow doesn't unfollow yourself" do
@@ -262,14 +264,14 @@ test "unfollow doesn't unfollow yourself" do
 
       {:error, _} = User.unfollow(user, user)
 
-      user = User.get_cached_by_id(user.id)
+      assert User.following(user) == [user.follower_address]
-      assert user.following == [user.ap_id]
     end
   end
 
   test "test if a user is following another user" do
     followed = insert(:user)
-    user = insert(:user, %{following: [User.ap_followers(followed)]})
+    user = insert(:user)
+    User.follow(user, followed, "accept")
 
     assert User.following?(user, followed)
     refute User.following?(followed, user)
@@ -352,7 +354,7 @@ test "it restricts certain nicknames" do
       refute changeset.valid?
     end
 
-    test "it sets the password_hash, ap_id and following fields" do
+    test "it sets the password_hash and ap_id" do
       changeset = User.register_changeset(%User{}, @full_user_data)
 
       assert changeset.valid?
@@ -360,10 +362,6 @@ test "it sets the password_hash, ap_id and following fields" do
       assert is_binary(changeset.changes[:password_hash])
       assert changeset.changes[:ap_id] == User.ap_id(%User{nickname: @full_user_data.nickname})
 
-      assert changeset.changes[:following] == [
-               User.ap_followers(%User{nickname: @full_user_data.nickname})
-             ]
-
       assert changeset.changes.follower_address == "#{changeset.changes.ap_id}/followers"
     end
 
@@ -671,37 +669,6 @@ test "it sets the info->follower_count property" do
     end
   end
 
-  describe "remove duplicates from following list" do
-    test "it removes duplicates" do
-      user = insert(:user)
-      follower = insert(:user)
-
-      {:ok, %User{following: following} = follower} = User.follow(follower, user)
-      assert length(following) == 2
-
-      {:ok, follower} =
-        follower
-        |> User.update_changeset(%{following: following ++ following})
-        |> Repo.update()
-
-      assert length(follower.following) == 4
-
-      {:ok, follower} = User.remove_duplicated_following(follower)
-      assert length(follower.following) == 2
-    end
-
-    test "it does nothing when following is uniq" do
-      user = insert(:user)
-      follower = insert(:user)
-
-      {:ok, follower} = User.follow(follower, user)
-      assert length(follower.following) == 2
-
-      {:ok, follower} = User.remove_duplicated_following(follower)
-      assert length(follower.following) == 2
-    end
-  end
-
   describe "follow_import" do
     test "it imports user followings from list" do
       [user1, user2, user3] = insert_list(3, :user)
@@ -1010,7 +977,9 @@ test "hide a user's statuses from timelines and notifications" do
       assert [activity] == ActivityPub.fetch_public_activities(%{}) |> Repo.preload(:bookmark)
 
       assert [%{activity | thread_muted?: CommonAPI.thread_muted?(user2, activity)}] ==
-               ActivityPub.fetch_activities([user2.ap_id | user2.following], %{"user" => user2})
+               ActivityPub.fetch_activities([user2.ap_id | User.following(user2)], %{
+                 "user" => user2
+               })
 
       {:ok, _user} = User.deactivate(user)
 
@@ -1018,7 +987,9 @@ test "hide a user's statuses from timelines and notifications" do
       assert [] == Pleroma.Notification.for_user(user2)
 
       assert [] ==
-               ActivityPub.fetch_activities([user2.ap_id | user2.following], %{"user" => user2})
+               ActivityPub.fetch_activities([user2.ap_id | User.following(user2)], %{
+                 "user" => user2
+               })
     end
   end
 

test/web/activity_pub/activity_pub_test.exs

@@ -606,7 +606,7 @@ test "does include announces on request" do
 
     {:ok, announce, _object} = CommonAPI.repeat(activity_three.id, booster)
 
-    [announce_activity] = ActivityPub.fetch_activities([user.ap_id | user.following])
+    [announce_activity] = ActivityPub.fetch_activities([user.ap_id | User.following(user)])
 
     assert announce_activity.id == announce.id
   end
@@ -1132,7 +1132,7 @@ test "it filters broken threads" do
         })
 
       activities =
-        ActivityPub.fetch_activities([user1.ap_id | user1.following])
+        ActivityPub.fetch_activities([user1.ap_id | User.following(user1)])
         |> Enum.map(fn a -> a.id end)
 
       private_activity_1 = Activity.get_by_ap_id_with_object(private_activity_1.data["id"])
@@ -1142,7 +1142,7 @@ test "it filters broken threads" do
       assert length(activities) == 3
 
       activities =
-        ActivityPub.fetch_activities([user1.ap_id | user1.following], %{"user" => user1})
+        ActivityPub.fetch_activities([user1.ap_id | User.following(user1)], %{"user" => user1})
         |> Enum.map(fn a -> a.id end)
 
       assert [public_activity.id, private_activity_1.id] == activities

test/web/activity_pub/relay_test.exs

@@ -7,6 +7,7 @@ defmodule Pleroma.Web.ActivityPub.RelayTest do
 
   alias Pleroma.Activity
   alias Pleroma.Object
+  alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.Relay
 
@@ -50,14 +51,14 @@ test "returns activity" do
       service_actor = Relay.get_actor()
       ActivityPub.follow(service_actor, user)
       Pleroma.User.follow(service_actor, user)
-      assert "#{user.ap_id}/followers" in refresh_record(service_actor).following
+      assert "#{user.ap_id}/followers" in User.following(service_actor)
       assert {:ok, %Activity{} = activity} = Relay.unfollow(user.ap_id)
       assert activity.actor == "#{Pleroma.Web.Endpoint.url()}/relay"
       assert user.ap_id in activity.recipients
       assert activity.data["type"] == "Undo"
       assert activity.data["actor"] == service_actor.ap_id
       assert activity.data["to"] == [user.ap_id]
-      refute "#{user.ap_id}/followers" in refresh_record(service_actor).following
+      refute "#{user.ap_id}/followers" in User.following(service_actor)
     end
   end
 

test/web/activity_pub/transmogrifier_test.exs

@@ -1312,7 +1312,8 @@ test "it upgrades a user to activitypub" do
           follower_address: User.ap_followers(%User{nickname: "rye@niu.moe"})
         })
 
-      user_two = insert(:user, %{following: [user.follower_address]})
+      user_two = insert(:user)
+      Pleroma.FollowingRelationship.follow(user_two, user, "accept")
 
       {:ok, activity} = CommonAPI.post(user, %{"status" => "test"})
       {:ok, unrelated_activity} = CommonAPI.post(user_two, %{"status" => "test"})
@@ -1359,8 +1360,8 @@ test "it upgrades a user to activitypub" do
       refute user.follower_address in unrelated_activity.recipients
 
       user_two = User.get_cached_by_id(user_two.id)
-      assert user.follower_address in user_two.following
+      assert User.following?(user_two, user)
-      refute "..." in user_two.following
+      refute "..." in User.following(user_two)
     end
   end
 

test/web/activity_pub/visibilty_test.exs

@@ -212,7 +212,8 @@ test "returns false when invalid recipients", %{user: user} do
 
     test "returns true if user following to author" do
       author = insert(:user)
-      user = insert(:user, following: [author.ap_id])
+      user = insert(:user)
+      Pleroma.User.follow(user, author)
 
       activity =
         insert(:note_activity,

test/web/mastodon_api/controllers/account_controller_test.exs

@@ -457,7 +457,7 @@ test "following without reblogs" do
 
       conn =
         build_conn()
-        |> assign(:user, follower)
+        |> assign(:user, User.get_cached_by_id(follower.id))
         |> post("/api/v1/accounts/#{followed.id}/follow?reblogs=true")
 
       assert %{"showing_reblogs" => true} = json_response(conn, 200)

test/web/mastodon_api/controllers/follow_request_controller_test.exs

@@ -16,9 +16,7 @@ test "/api/v1/follow_requests works" do
       other_user = insert(:user)
 
       {:ok, _activity} = ActivityPub.follow(other_user, user)
-
+      {:ok, other_user} = User.follow(other_user, user, "pending")
-      user = User.get_cached_by_id(user.id)
-      other_user = User.get_cached_by_id(other_user.id)
 
       assert User.following?(other_user, user) == false
 
@@ -36,6 +34,7 @@ test "/api/v1/follow_requests/:id/authorize works" do
       other_user = insert(:user)
 
       {:ok, _activity} = ActivityPub.follow(other_user, user)
+      {:ok, other_user} = User.follow(other_user, user, "pending")
 
       user = User.get_cached_by_id(user.id)
       other_user = User.get_cached_by_id(other_user.id)

test/web/streamer/streamer_test.exs

@@ -169,7 +169,8 @@ test "it sends to public" do
     test "it doesn't send to user if recipients invalid and thread containment is enabled" do
       Pleroma.Config.put([:instance, :skip_thread_containment], false)
       author = insert(:user)
-      user = insert(:user, following: [author.ap_id])
+      user = insert(:user)
+      User.follow(user, author, "accept")
 
       activity =
         insert(:note_activity,
@@ -191,7 +192,8 @@ test "it doesn't send to user if recipients invalid and thread containment is en
     test "it sends message if recipients invalid and thread containment is disabled" do
       Pleroma.Config.put([:instance, :skip_thread_containment], true)
       author = insert(:user)
-      user = insert(:user, following: [author.ap_id])
+      user = insert(:user)
+      User.follow(user, author, "accept")
 
       activity =
         insert(:note_activity,
@@ -213,7 +215,8 @@ test "it sends message if recipients invalid and thread containment is disabled"
     test "it sends message if recipients invalid and thread containment is enabled but user's thread containment is disabled" do
       Pleroma.Config.put([:instance, :skip_thread_containment], false)
       author = insert(:user)
-      user = insert(:user, following: [author.ap_id], info: %{skip_thread_containment: true})
+      user = insert(:user, info: %{skip_thread_containment: true})
+      User.follow(user, author, "accept")
 
       activity =
         insert(:note_activity,

test/web/twitter_api/util_controller_test.exs

@@ -366,7 +366,7 @@ test "follows user", %{conn: conn} do
         |> response(200)
 
       assert response =~ "Account followed!"
-      assert user2.follower_address in refresh_record(user).following
+      assert user2.follower_address in User.following(user)
     end
 
     test "returns error when user is deactivated", %{conn: conn} do
@@ -438,7 +438,7 @@ test "follows", %{conn: conn} do
         |> response(200)
 
       assert response =~ "Account followed!"
-      assert user2.follower_address in refresh_record(user).following
+      assert user2.follower_address in User.following(user)
     end
 
     test "returns error when followee not found", %{conn: conn} do