Merge pull request 'Manually define PATH for Arch Linux users in systemd unit' (...
[akkoma] / lib / pleroma / user_relationship.ex
index 167a3919c771a2101758808ffbf3b4fa6c7f018d..2f77697d4db18b4e1b6ae9b78177f7286e4fbe6f 100644 (file)
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.UserRelationship do
@@ -8,7 +8,8 @@ defmodule Pleroma.UserRelationship do
   import Ecto.Changeset
   import Ecto.Query
 
-  alias FlakeId.Ecto.CompatType
+  alias Ecto.Changeset
+  alias Pleroma.FollowingRelationship
   alias Pleroma.Repo
   alias Pleroma.User
   alias Pleroma.UserRelationship
@@ -16,28 +17,31 @@ defmodule Pleroma.UserRelationship do
   schema "user_relationships" do
     belongs_to(:source, User, type: FlakeId.Ecto.CompatType)
     belongs_to(:target, User, type: FlakeId.Ecto.CompatType)
-    field(:relationship_type, UserRelationshipTypeEnum)
+    field(:relationship_type, Pleroma.UserRelationship.Type)
 
     timestamps(updated_at: false)
   end
 
-  for relationship_type <- Keyword.keys(UserRelationshipTypeEnum.__enum_map__()) do
-    # Definitions of `create_block/2`, `create_mute/2` etc.
+  for relationship_type <- Keyword.keys(Pleroma.UserRelationship.Type.__enum_map__()) do
+    # `def create_block/2`, `def create_mute/2`, `def create_reblog_mute/2`,
+    #   `def create_notification_mute/2`, `def create_inverse_subscription/2`
     def unquote(:"create_#{relationship_type}")(source, target),
       do: create(unquote(relationship_type), source, target)
 
-    # Definitions of `delete_block/2`, `delete_mute/2` etc.
+    # `def delete_block/2`, `def delete_mute/2`, `def delete_reblog_mute/2`,
+    #   `def delete_notification_mute/2`, `def delete_inverse_subscription/2`
     def unquote(:"delete_#{relationship_type}")(source, target),
       do: delete(unquote(relationship_type), source, target)
 
-    # Definitions of `block_exists?/2`, `mute_exists?/2` etc.
+    # `def block_exists?/2`, `def mute_exists?/2`, `def reblog_mute_exists?/2`,
+    #   `def notification_mute_exists?/2`, `def inverse_subscription_exists?/2`
     def unquote(:"#{relationship_type}_exists?")(source, target),
       do: exists?(unquote(relationship_type), source, target)
   end
 
   def user_relationship_types, do: Keyword.keys(user_relationship_mappings())
 
-  def user_relationship_mappings, do: UserRelationshipTypeEnum.__enum_map__()
+  def user_relationship_mappings, do: Pleroma.UserRelationship.Type.__enum_map__()
 
   def changeset(%UserRelationship{} = user_relationship, params \\ %{}) do
     user_relationship
@@ -63,8 +67,9 @@ defmodule Pleroma.UserRelationship do
       target_id: target.id
     })
     |> Repo.insert(
-      on_conflict: {:replace_all_except, [:id]},
-      conflict_target: [:source_id, :relationship_type, :target_id]
+      on_conflict: {:replace_all_except, [:id, :inserted_at]},
+      conflict_target: [:source_id, :relationship_type, :target_id],
+      returning: true
     )
   end
 
@@ -83,13 +88,25 @@ defmodule Pleroma.UserRelationship do
         source_to_target_rel_types \\ nil,
         target_to_source_rel_types \\ nil
       )
-      when is_list(source_users) and is_list(target_users) do
-    get_bin_ids = fn user ->
-      with {:ok, bin_id} <- CompatType.dump(user.id), do: bin_id
-    end
 
-    source_user_ids = Enum.map(source_users, &get_bin_ids.(&1))
-    target_user_ids = Enum.map(target_users, &get_bin_ids.(&1))
+  def dictionary(
+        _source_users,
+        _target_users,
+        [] = _source_to_target_rel_types,
+        [] = _target_to_source_rel_types
+      ) do
+    []
+  end
+
+  def dictionary(
+        source_users,
+        target_users,
+        source_to_target_rel_types,
+        target_to_source_rel_types
+      )
+      when is_list(source_users) and is_list(target_users) do
+    source_user_ids = User.binary_id(source_users)
+    target_user_ids = User.binary_id(target_users)
 
     get_rel_type_codes = fn rel_type -> user_relationship_mappings()[rel_type] end
 
@@ -116,18 +133,83 @@ defmodule Pleroma.UserRelationship do
     |> Repo.all()
   end
 
-  defp validate_not_self_relationship(%Ecto.Changeset{} = changeset) do
+  def exists?(dictionary, rel_type, source, target, func) do
+    cond do
+      is_nil(source) or is_nil(target) ->
+        false
+
+      dictionary ->
+        [rel_type, source.id, target.id] in dictionary
+
+      true ->
+        func.(source, target)
+    end
+  end
+
+  @doc ":relationships option for StatusView / AccountView / NotificationView"
+  def view_relationships_option(reading_user, actors, opts \\ [])
+
+  def view_relationships_option(nil = _reading_user, _actors, _opts) do
+    %{user_relationships: [], following_relationships: []}
+  end
+
+  def view_relationships_option(%User{} = reading_user, actors, opts) do
+    {source_to_target_rel_types, target_to_source_rel_types} =
+      case opts[:subset] do
+        :source_mutes ->
+          # Used for statuses rendering (FE needs `muted` flag for each status when statuses load)
+          {[:mute], []}
+
+        nil ->
+          {[:block, :mute, :notification_mute, :reblog_mute], [:block, :inverse_subscription]}
+
+        unknown ->
+          raise "Unsupported :subset option value: #{inspect(unknown)}"
+      end
+
+    user_relationships =
+      UserRelationship.dictionary(
+        [reading_user],
+        actors,
+        source_to_target_rel_types,
+        target_to_source_rel_types
+      )
+
+    following_relationships =
+      case opts[:subset] do
+        :source_mutes ->
+          []
+
+        nil ->
+          FollowingRelationship.all_between_user_sets([reading_user], actors)
+
+        unknown ->
+          raise "Unsupported :subset option value: #{inspect(unknown)}"
+      end
+
+    %{user_relationships: user_relationships, following_relationships: following_relationships}
+  end
+
+  defp validate_not_self_relationship(%Changeset{} = changeset) do
     changeset
-    |> validate_change(:target_id, fn _, target_id ->
-      if target_id == get_field(changeset, :source_id) do
-        [target_id: "can't be equal to source_id"]
+    |> validate_source_id_target_id_inequality()
+    |> validate_target_id_source_id_inequality()
+  end
+
+  defp validate_source_id_target_id_inequality(%Changeset{} = changeset) do
+    validate_change(changeset, :source_id, fn _, source_id ->
+      if source_id == get_field(changeset, :target_id) do
+        [source_id: "can't be equal to target_id"]
       else
         []
       end
     end)
-    |> validate_change(:source_id, fn _, source_id ->
-      if source_id == get_field(changeset, :target_id) do
-        [source_id: "can't be equal to target_id"]
+  end
+
+  defp validate_target_id_source_id_inequality(%Changeset{} = changeset) do
+    validate_change(changeset, :target_id, fn _, target_id ->
+      if target_id == get_field(changeset, :source_id) do
+        [target_id: "can't be equal to source_id"]
       else
         []
       end