defmodule Mobilizon.Actors do @moduledoc """ The Actors context. """ import Ecto.Query import EctoEnum import Geo.PostGIS, only: [st_dwithin_in_meters: 3] import Mobilizon.Service.Guards alias Ecto.Multi alias Mobilizon.Actors.{Actor, Bot, Follower, Member} alias Mobilizon.Addresses.Address alias Mobilizon.{Crypto, Events} alias Mobilizon.Federation.ActivityPub alias Mobilizon.Media.File alias Mobilizon.Service.Workers alias Mobilizon.Storage.{Page, Repo} alias Mobilizon.Users alias Mobilizon.Web.Email.Group alias Mobilizon.Web.Upload require Logger defenum(ActorType, :actor_type, [ :Person, :Application, :Group, :Organization, :Service ]) defenum(ActorOpenness, :actor_openness, [ :invite_only, :moderated, :open ]) defenum(ActorVisibility, :actor_visibility, [ :public, :unlisted, # Probably unused :restricted, :private ]) defenum(MemberRole, :member_role, [ :invited, :not_approved, :member, :moderator, :administrator, :creator, :rejected ]) @administrator_roles [:creator, :administrator] @moderator_roles [:moderator] ++ @administrator_roles @member_roles [:member] ++ @moderator_roles @actor_preloads [:user, :organized_events, :comments] @doc """ Gets a single actor. """ @spec get_actor(integer | String.t()) :: Actor.t() | nil def get_actor(id), do: Repo.get(Actor, id) @doc """ Gets a single actor. Raises `Ecto.NoResultsError` if the actor does not exist. """ @spec get_actor!(integer | String.t()) :: Actor.t() def get_actor!(id), do: Repo.get!(Actor, id) @doc """ Gets an actor with preloaded relations. """ @spec get_actor_with_preload(integer | String.t()) :: Actor.t() | nil def get_actor_with_preload(id, include_suspended \\ false) do id |> actor_with_preload_query(include_suspended) |> Repo.one() end @doc """ Gets a local actor with preloaded relations. """ @spec get_local_actor_with_preload(integer | String.t()) :: Actor.t() | nil def get_local_actor_with_preload(id) do id |> actor_with_preload_query() |> filter_local() |> Repo.one() end @spec get_remote_actor_with_preload(integer | String.t(), boolean()) :: Actor.t() | nil def get_remote_actor_with_preload(id, include_suspended \\ false) do id |> actor_with_preload_query(include_suspended) |> filter_external() |> Repo.one() end @doc """ Gets an actor by its URL (ActivityPub ID). The `:preload` option allows to preload the followers relation. """ @spec get_actor_by_url(String.t(), boolean) :: {:ok, Actor.t()} | {:error, :actor_not_found} def get_actor_by_url(url, preload \\ false) def get_actor_by_url(nil, _preload), do: {:error, :actor_not_found} def get_actor_by_url(url, preload) do case Repo.get_by(Actor, url: url) do nil -> {:error, :actor_not_found} actor -> {:ok, preload_followers(actor, preload)} end end @doc """ New function to replace `Mobilizon.Actors.get_actor_by_url/1` with better signature """ @spec get_actor_by_url_2(String.t(), boolean) :: Actor.t() | nil def get_actor_by_url_2(url, preload \\ false) do Actor |> Repo.get_by(url: url) |> preload_followers(preload) end @doc """ Gets an actor by its URL (ActivityPub ID). The `:preload` option allows to preload the followers relation. Raises `Ecto.NoResultsError` if the actor does not exist. """ @spec get_actor_by_url!(String.t(), boolean) :: Actor.t() def get_actor_by_url!(url, preload \\ false) do Actor |> Repo.get_by!(url: url) |> preload_followers(preload) end @doc """ Gets an actor by name. """ @spec get_actor_by_name(String.t(), atom | nil) :: Actor.t() | nil def get_actor_by_name(name, type \\ nil) do query = from(a in Actor) query |> filter_by_type(type) |> filter_by_name(String.split(name, "@")) |> Repo.one() end @doc """ Gets a local actor by its preferred username. """ @spec get_local_actor_by_name(String.t()) :: Actor.t() | nil def get_local_actor_by_name(name) do query = from(a in Actor) query |> filter_by_name([name]) |> Repo.one() end @doc """ Gets a local actor by its preferred username and preloaded relations (organized events, followers and followings). """ @spec get_local_actor_by_name_with_preload(String.t()) :: Actor.t() | nil def get_local_actor_by_name_with_preload(name) do name |> get_local_actor_by_name() |> Repo.preload([:organized_events, :followers, :followings]) end @doc """ Gets an actor by name and preloads the organized events. """ @spec get_actor_by_name_with_preload(String.t(), atom() | nil) :: Actor.t() | nil def get_actor_by_name_with_preload(name, type \\ nil) do name |> get_actor_by_name(type) |> Repo.preload([:organized_events, :user, :physical_address]) end @doc """ Creates an actor. """ @spec create_actor(map) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()} def create_actor(attrs \\ %{}) do type = Map.get(attrs, :type, :Person) case type do :Person -> %Actor{} |> Actor.changeset(attrs) |> Repo.insert() :Group -> create_group(attrs) end end @doc """ Creates a new person actor. """ @spec new_person(map) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()} def new_person(args, default_actor \\ false) do args = Map.put(args, :keys, Crypto.generate_rsa_2048_private_key()) with {:ok, %Actor{id: person_id} = person} <- %Actor{} |> Actor.registration_changeset(args) |> Repo.insert() do Events.create_feed_token(%{user_id: args.user_id, actor_id: person.id}) if default_actor do user = Users.get_user!(args.user_id) Users.update_user(user, %{default_actor_id: person_id}) end {:ok, person} end end @doc """ Updates an actor. """ @spec update_actor(Actor.t(), map) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()} def update_actor(%Actor{} = actor, attrs) do actor |> Repo.preload([:physical_address]) |> Actor.update_changeset(attrs) |> delete_files_if_media_changed() |> Repo.update() end @doc """ Upserts an actor. Conflicts on actor's URL/AP ID, replaces keys, avatar and banner, name and summary. """ @spec upsert_actor(map, boolean) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()} def upsert_actor( data, preload \\ false ) do # data = # data # |> Map.put(:avatar, transform_media_file(data.avatar)) # |> Map.put(:banner, transform_media_file(data.banner)) insert = data |> Actor.remote_actor_creation_changeset() |> Repo.insert( on_conflict: {:replace_all_except, [:id, :url, :preferred_username, :domain]}, conflict_target: [:url] ) case insert do {:ok, actor} -> actor = if preload, do: Repo.preload(actor, [:followers]), else: actor {:ok, actor} error -> Logger.debug(inspect(error)) {:error, error} end end # defp transform_media_file(nil), do: nil # defp transform_media_file(file) do # file = for({key, val} <- file, into: %{}, do: {String.to_atom(key), val}) # if is_nil(file) do # nil # else # struct(Mobilizon.Media.File, file) # end # end @delete_actor_default_options [reserve_username: true, suspension: false] def delete_actor(%Actor{} = actor, options \\ @delete_actor_default_options) do delete_actor_options = Keyword.merge(@delete_actor_default_options, options) Workers.Background.enqueue("delete_actor", %{ "actor_id" => actor.id, "author_id" => Keyword.get(delete_actor_options, :author_id), "reserve_username" => Keyword.get(delete_actor_options, :reserve_username, true), "suspension" => Keyword.get(delete_actor_options, :suspension, false) }) end @doc """ Deletes an actor. """ @spec perform(atom(), Actor.t()) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()} def perform(:delete_actor, %Actor{type: type} = actor, options \\ @delete_actor_default_options) do Logger.info("Going to delete actor #{actor.url}") actor = Repo.preload(actor, @actor_preloads) delete_actor_options = Keyword.merge(@delete_actor_default_options, options) Logger.debug(inspect(delete_actor_options)) if type == :Group do delete_eventual_local_members(actor, delete_actor_options) end multi = Multi.new() |> Multi.run(:delete_organized_events, fn _, _ -> delete_actor_organized_events(actor) end) |> Multi.run(:empty_comments, fn _, _ -> delete_actor_empty_comments(actor) end) |> Multi.run(:remove_banner, fn _, _ -> remove_banner(actor) end) |> Multi.run(:remove_avatar, fn _, _ -> remove_avatar(actor) end) multi = if type == :Group do multi |> Multi.run(:delete_remote_members, fn _, _ -> delete_group_elements(actor, :remote_members) end) |> Multi.run(:delete_group_organized_events, fn _, _ -> delete_group_elements(actor, :events) end) |> Multi.run(:delete_group_posts, fn _, _ -> delete_group_elements(actor, :posts) end) |> Multi.run(:delete_group_resources, fn _, _ -> delete_group_elements(actor, :resources) end) |> Multi.run(:delete_group_todo_lists, fn _, _ -> delete_group_elements(actor, :todo_lists) end) |> Multi.run(:delete_group_discussions, fn _, _ -> delete_group_elements(actor, :discussions) end) else multi end multi = if Keyword.get(delete_actor_options, :reserve_username, true) do Multi.update(multi, :actor, Actor.delete_changeset(actor)) else Multi.delete(multi, :actor, actor) end Logger.debug("Going to run the transaction") case Repo.transaction(multi) do {:ok, %{actor: %Actor{} = actor}} -> {:ok, true} = Cachex.del(:activity_pub, "actor_#{actor.preferred_username}") Logger.info("Deleted actor #{actor.url}") {:ok, actor} {:error, remove, error, _} when remove in [:remove_banner, :remove_avatar] -> Logger.error("Error while deleting actor's banner or avatar") Logger.error(inspect(error, pretty: true)) {:error, error} err -> Logger.error("Unknown error while deleting actor") Logger.error(inspect(err, pretty: true)) {:error, err} end end @spec actor_key_rotation(Actor.t()) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()} def actor_key_rotation(%Actor{} = actor) do actor |> Actor.changeset(%{keys: Crypto.generate_rsa_2048_private_key()}) |> Repo.update() end @doc """ Returns the list of actors. """ @spec list_actors( atom(), String.t(), String.t(), String.t(), boolean, boolean, integer, integer ) :: Page.t() def list_actors( type \\ :Person, preferred_username \\ "", name \\ "", domain \\ "", local \\ true, suspended \\ false, page \\ nil, limit \\ nil ) def list_actors( :Person, preferred_username, name, domain, local, suspended, page, limit ) do person_query() |> filter_actors(preferred_username, name, domain, local, suspended) |> Page.build_page(page, limit) end def list_actors( :Group, preferred_username, name, domain, local, suspended, page, limit ) do group_query() |> filter_actors(preferred_username, name, domain, local, suspended) |> Page.build_page(page, limit) end @spec filter_actors(Ecto.Query.t(), String.t(), String.t(), String.t(), boolean(), boolean()) :: Ecto.Query.t() defp filter_actors( query, preferred_username, name, domain, local, suspended ) do query |> filter_suspended(suspended) |> filter_preferred_username(preferred_username) |> filter_name(name) |> filter_domain(domain) |> filter_remote(local) end defp filter_preferred_username(query, ""), do: query defp filter_preferred_username(query, preferred_username), do: where(query, [a], ilike(a.preferred_username, ^"%#{preferred_username}%")) defp filter_name(query, ""), do: query defp filter_name(query, name), do: where(query, [a], ilike(a.name, ^"%#{name}%")) defp filter_domain(query, ""), do: query defp filter_domain(query, domain), do: where(query, [a], ilike(a.domain, ^"%#{domain}%")) defp filter_remote(query, true), do: filter_local(query) defp filter_remote(query, false), do: filter_external(query) @spec filter_suspended(Ecto.Query.t(), boolean()) :: Ecto.Query.t() defp filter_suspended(query, true), do: where(query, [a], a.suspended) defp filter_suspended(query, false), do: where(query, [a], not a.suspended) @doc """ Returns the list of local actors by their username. """ @spec list_local_actor_by_username(String.t()) :: [Actor.t()] def list_local_actor_by_username(username) do username |> actor_by_username_query() |> filter_local() |> Repo.all() |> Repo.preload(:organized_events) end @doc """ Builds a page struct for actors by their name or displayed name. """ @spec build_actors_by_username_or_name_page( map(), [ActorType.t()], integer | nil, integer | nil ) :: Page.t() def build_actors_by_username_or_name_page( %{term: term} = args, types, page \\ nil, limit \\ nil ) do Actor |> actor_by_username_or_name_query(term) |> actors_for_location(args) |> filter_by_types(types) |> filter_suspended(false) |> Page.build_page(page, limit) end @doc """ Gets a group by its title. """ @spec get_group_by_title(String.t()) :: Actor.t() | nil def get_group_by_title(title) do group_query() |> filter_by_name(String.split(title, "@")) |> Repo.one() end @doc """ Gets a local group by its title. """ @spec get_local_group_by_title(String.t()) :: Actor.t() | nil def get_local_group_by_title(title) do group_query() |> filter_by_name([title]) |> Repo.one() end @doc """ Gets a group by its actor id. """ @spec get_group_by_actor_id(integer | String.t()) :: {:ok, Actor.t()} | {:error, :group_not_found} def get_group_by_actor_id(actor_id) do case Repo.get_by(Actor, id: actor_id, type: :Group) do nil -> {:error, :group_not_found} actor -> {:ok, actor} end end @spec get_local_group_by_url(String.t()) :: Actor.t() def get_local_group_by_url(group_url) do group_query() |> where([q], q.url == ^group_url and is_nil(q.domain)) |> Repo.one() end @spec get_group_by_members_url(String.t()) :: Actor.t() def get_group_by_members_url(members_url) do group_query() |> where([q], q.members_url == ^members_url) |> Repo.one() end @spec get_actor_by_followers_url(String.t()) :: Actor.t() def get_actor_by_followers_url(followers_url) do Actor |> where([q], q.followers_url == ^followers_url) |> Repo.one() end @doc """ Creates a group. If the group is local, creates an admin actor as well from `creator_actor_id`. """ @spec create_group(map) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()} def create_group(attrs \\ %{}) do local = Map.get(attrs, :local, true) if local do with {:ok, %{insert_group: %Actor{} = group, add_admin_member: %Member{} = _admin_member}} <- Multi.new() |> Multi.insert(:insert_group, Actor.group_creation_changeset(%Actor{}, attrs)) |> Multi.insert(:add_admin_member, fn %{insert_group: group} -> Member.changeset(%Member{}, %{ parent_id: group.id, actor_id: attrs.creator_actor_id, role: :administrator }) end) |> Repo.transaction() do {:ok, group} end else %Actor{} |> Actor.group_creation_changeset(attrs) |> Repo.insert() end end @doc """ Deletes a group. """ def delete_group!(%Actor{type: :Group} = group), do: Repo.delete!(group) @doc """ Counts the local groups """ @spec count_local_groups :: integer() def count_local_groups do groups_query() |> filter_local() |> Repo.aggregate(:count) end @doc """ Counts all the groups """ @spec count_groups :: integer() def count_groups do groups_query() |> Repo.aggregate(:count) end @doc """ Lists the groups. """ @spec list_groups(integer | nil, integer | nil) :: Page.t() def list_groups(page \\ nil, limit \\ nil) do groups_query() |> Page.build_page(page, limit) end @doc """ Lists the groups. """ @spec list_groups_for_stream :: Enum.t() def list_groups_for_stream do groups_query() |> Repo.stream() end @doc """ Returns the list of groups an actor is member of. """ @spec list_groups_member_of(Actor.t()) :: [Actor.t()] def list_groups_member_of(%Actor{id: actor_id}) do actor_id |> groups_member_of_query() |> Repo.all() end @doc """ Gets a single member. """ @spec get_member(integer | String.t()) :: {:ok, Member.t()} | nil def get_member(id) do Member |> Repo.get(id) |> Repo.preload([:actor, :parent, :invited_by]) end @doc """ Gets a single member. Raises `Ecto.NoResultsError` if the member does not exist. """ @spec get_member!(integer | String.t()) :: Member.t() def get_member!(id), do: Repo.get!(Member, id) @doc """ Gets a single member of an actor (for example a group). """ @spec get_member(integer | String.t(), integer | String.t()) :: {:ok, Member.t()} | {:error, :member_not_found} def get_member(actor_id, parent_id) do case Repo.get_by(Member, actor_id: actor_id, parent_id: parent_id) do nil -> {:error, :member_not_found} member -> {:ok, member} end end @spec get_member(integer | String.t(), integer | String.t(), list()) :: {:ok, Member.t()} | {:error, :member_not_found} def get_member(actor_id, parent_id, roles) do case Member |> where([m], m.actor_id == ^actor_id and m.parent_id == ^parent_id and m.role in ^roles) |> Repo.one() do nil -> {:error, :member_not_found} member -> {:ok, member} end end @spec is_member?(integer | String.t(), integer | String.t()) :: boolean() def is_member?(actor_id, parent_id) do match?( {:ok, %Member{}}, get_member(actor_id, parent_id, @member_roles) ) end @doc """ Gets a single member of an actor (for example a group). """ @spec get_member_by_url(String.t()) :: Member.t() | nil def get_member_by_url(url) do Member |> where(url: ^url) |> preload([:actor, :parent, :invited_by]) |> Repo.one() end @spec get_single_group_member_actor(integer() | String.t()) :: Actor.t() | nil def get_single_group_member_actor(group_id) do Member |> where( [m], m.parent_id == ^group_id and m.role in [^:member, ^:moderator, ^:administrator, ^:creator] ) |> join(:inner, [m], a in Actor, on: m.actor_id == a.id) |> where([_m, a], is_nil(a.domain)) |> limit(1) |> select([_m, a], a) |> Repo.one() end @doc """ Creates a member. """ @spec create_member(map) :: {:ok, Member.t()} | {:error, Ecto.Changeset.t()} def create_member(attrs \\ %{}) do with {:ok, %Member{} = member} <- %Member{} |> Member.changeset(attrs) |> Repo.insert( on_conflict: {:replace_all_except, [:id, :url, :actor_id, :parent_id]}, conflict_target: [:actor_id, :parent_id], # See https://hexdocs.pm/ecto/Ecto.Repo.html#c:insert/2-upserts, # when doing an upsert with on_conflict, PG doesn't return whether it's an insert or upsert # so we need to refresh the fields returning: true ) do {:ok, Repo.preload(member, [:actor, :parent, :invited_by])} end end @doc """ Updates a member. """ @spec update_member(Member.t(), map) :: {:ok, Member.t()} | {:error, Ecto.Changeset.t()} def update_member(%Member{} = member, attrs) do member |> Member.changeset(attrs) |> Repo.update() end @doc """ Deletes a member. """ @spec delete_member(Member.t()) :: {:ok, Member.t()} | {:error, Ecto.Changeset.t()} def delete_member(%Member{} = member), do: Repo.delete(member) @doc """ Returns the list of memberships for an user. Default behaviour is to not return :not_approved memberships ## Examples iex> list_event_participations_for_user(5) %Page{total: 3, elements: [%Participant{}, ...]} """ @spec list_memberships_for_user( integer, integer | nil, integer | nil ) :: Page.t() def list_memberships_for_user(user_id, page, limit) do user_id |> list_members_for_user_query() |> Page.build_page(page, limit) end @doc """ Returns the list of members for an actor. """ @spec list_members_for_actor(Actor.t(), integer | nil, integer | nil) :: Page.t() def list_members_for_actor(%Actor{id: actor_id}, page \\ nil, limit \\ nil) do actor_id |> members_for_actor_query() |> Page.build_page(page, limit) end @spec list_local_members_for_group(Actor.t(), integer | nil, integer | nil) :: Page.t() def list_local_members_for_group( %Actor{id: group_id, type: :Group} = _group, page \\ nil, limit \\ nil ) do group_id |> group_internal_member_query() |> Page.build_page(page, limit) end @spec list_remote_members_for_group(Actor.t(), integer | nil, integer | nil) :: Page.t() def list_remote_members_for_group( %Actor{id: group_id, type: :Group} = _group, page \\ nil, limit \\ nil ) do group_id |> group_external_member_query() |> Page.build_page(page, limit) end @doc """ Returns the list of members for a group. """ @spec list_members_for_group(Actor.t(), list(atom()), integer | nil, integer | nil) :: Page.t() def list_members_for_group( %Actor{id: group_id, type: :Group}, roles \\ [], page \\ nil, limit \\ nil ) do group_id |> members_for_group_query() |> filter_member_role(roles) |> Page.build_page(page, limit) end @spec list_external_actors_members_for_group(Actor.t()) :: list(Actor.t()) def list_external_actors_members_for_group(%Actor{id: group_id, type: :Group}) do group_id |> group_external_member_actor_query() |> Repo.all() end @doc """ Returns the list of administrator members for a group. """ @spec list_administrator_members_for_group(integer | String.t(), integer | nil, integer | nil) :: Page.t() def list_administrator_members_for_group(id, page \\ nil, limit \\ nil) do id |> administrator_members_for_group_query() |> Page.build_page(page, limit) end @doc """ Returns the list of all group ids where the actor_id is the last administrator. """ @spec list_group_ids_where_last_administrator(integer | String.t()) :: [integer] def list_group_ids_where_last_administrator(actor_id) do actor_id |> group_ids_where_last_administrator_query() |> Repo.all() end @doc """ Returns whether the member is the last administrator for a group """ @spec is_only_administrator?(integer | String.t(), integer | String.t()) :: boolean() def is_only_administrator?(member_id, group_id) do Member |> where( [m], m.parent_id == ^group_id and m.id != ^member_id and m.role in ^@administrator_roles ) |> Repo.aggregate(:count) |> (&(&1 == 0)).() end @doc """ Gets a single bot. Raises `Ecto.NoResultsError` if the bot does not exist. """ def get_bot!(id), do: Repo.get!(Bot, id) @doc """ Gets the bot associated to an actor. """ @spec get_bot_for_actor(Actor.t()) :: Bot.t() def get_bot_for_actor(%Actor{id: actor_id}) do Repo.get_by!(Bot, actor_id: actor_id) end @doc """ Creates a bot. """ @spec create_bot(map) :: {:ok, Bot.t()} | {:error, Ecto.Changeset.t()} def create_bot(attrs \\ %{}) do %Bot{} |> Bot.changeset(attrs) |> Repo.insert() end @doc """ Registers a new bot. """ @spec register_bot(map) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()} def register_bot(%{name: name, summary: summary}) do attrs = %{ preferred_username: name, domain: nil, keys: Crypto.generate_rsa_2048_private_key(), summary: summary, type: :Service } %Actor{} |> Actor.registration_changeset(attrs) |> Repo.insert() end @spec get_or_create_internal_actor(String.t()) :: {:ok, Actor.t()} def get_or_create_internal_actor(username) do case username |> Actor.build_url(:page) |> get_actor_by_url() do {:ok, %Actor{} = actor} -> {:ok, actor} _ -> case username do "anonymous" -> Actor.build_anonymous_actor_creation_attrs() |> Repo.insert() "relay" -> Actor.build_relay_creation_attrs() |> Repo.insert() end end end @doc """ Updates a bot. """ @spec update_bot(Bot.t(), map) :: {:ok, Bot.t()} | {:error, Ecto.Changeset.t()} def update_bot(%Bot{} = bot, attrs) do bot |> Bot.changeset(attrs) |> Repo.update() end @doc """ Deletes a bot. """ @spec delete_bot(Bot.t()) :: {:ok, Bot.t()} | {:error, Ecto.Changeset.t()} def delete_bot(%Bot{} = bot), do: Repo.delete(bot) @doc """ Returns the list of bots. """ @spec list_bots :: [Bot.t()] def list_bots, do: Repo.all(Bot) @doc """ Gets a single follower. Raises `Ecto.NoResultsError` if the follower does not exist. """ @spec get_follower!(integer | String.t()) :: Follower.t() def get_follower!(id) do Follower |> Repo.get!(id) |> Repo.preload([:actor, :target_actor]) end @doc """ Get a follower by the url. """ @spec get_follower_by_url(String.t()) :: Follower.t() def get_follower_by_url(url) do url |> follower_by_url() |> Repo.one() end @doc """ Gets a follower by the followed actor and following actor """ @spec get_follower_by_followed_and_following(Actor.t(), Actor.t()) :: Follower.t() | nil def get_follower_by_followed_and_following(%Actor{id: followed_id}, %Actor{id: following_id}) do followed_id |> follower_by_followed_and_following_query(following_id) |> Repo.one() end @doc """ Creates a follower. """ @spec create_follower(map) :: {:ok, Follower.t()} | {:error, Ecto.Changeset.t()} def create_follower(attrs \\ %{}) do with {:ok, %Follower{} = follower} <- %Follower{} |> Follower.changeset(attrs) |> Repo.insert() do {:ok, Repo.preload(follower, [:actor, :target_actor])} end end @doc """ Updates a follower. """ @spec update_follower(Follower.t(), map) :: {:ok, Follower.t()} | {:error, Ecto.Changeset.t()} def update_follower(%Follower{} = follower, attrs) do with {:ok, %Follower{} = follower} <- follower |> Follower.changeset(attrs) |> Repo.update() do {:ok, Repo.preload(follower, [:actor, :target_actor])} end end @doc """ Deletes a follower. """ @spec delete_follower(Follower.t()) :: {:ok, Follower.t()} | {:error, Ecto.Changeset.t()} def delete_follower(%Follower{} = follower), do: Repo.delete(follower) @doc """ Deletes a follower by followed and following actors. """ @spec delete_follower_by_followed_and_following(Actor.t(), Actor.t()) :: {:ok, Follower.t()} | {:error, Ecto.Changeset.t()} def delete_follower_by_followed_and_following(%Actor{} = followed, %Actor{} = following) do followed |> get_follower_by_followed_and_following(following) |> Repo.delete() end @doc """ Returns the list of followers for an actor. If actor A and C both follow actor B, actor B's followers are A and C. """ @spec list_followers_actors_for_actor(Actor.t()) :: [Actor.t()] def list_followers_actors_for_actor(%Actor{id: actor_id}) do actor_id |> follower_actors_for_actor_query() |> Repo.all() end @doc """ Returns the list of external followers for an actor. """ @spec list_external_followers_for_actor(Actor.t()) :: [Follower.t()] def list_external_followers_for_actor(%Actor{id: actor_id}) do actor_id |> list_external_follower_actors_for_actor_query() |> Repo.all() end @doc """ Returns the paginated list of external followers for an actor. """ @spec list_external_followers_for_actor_paginated(Actor.t(), integer | nil, integer | nil) :: Page.t() def list_external_followers_for_actor_paginated(%Actor{id: actor_id}, page \\ nil, limit \\ nil) do actor_id |> list_external_followers_for_actor_query() |> Page.build_page(page, limit) end @doc """ Build a page struct for followers of an actor. """ @spec build_followers_for_actor(Actor.t(), integer | nil, integer | nil) :: Page.t() def build_followers_for_actor(%Actor{id: actor_id}, page \\ nil, limit \\ nil) do actor_id |> follower_actors_for_actor_query() |> Page.build_page(page, limit) end @doc """ Returns the number of followers for an actor """ @spec count_followers_for_actor(Actor.t()) :: integer() def count_followers_for_actor(%Actor{id: actor_id}) do actor_id |> follower_for_actor_query() |> where(approved: true) |> Repo.aggregate(:count) end @doc """ Returns the list of followings for an actor. If actor A follows actor B and C, actor A's followings are B and C. """ @spec list_followings_for_actor(Actor.t()) :: [Follower.t()] def list_followings_for_actor(%Actor{id: actor_id}) do actor_id |> followings_actors_for_actor_query() |> Repo.all() end @doc """ Returns the number of followings for an actor """ @spec count_followings_for_actor(Actor.t()) :: integer() def count_followings_for_actor(%Actor{id: actor_id}) do actor_id |> followings_for_actor_query() |> where(approved: true) |> Repo.aggregate(:count) end @doc """ Returns the list of external followings for an actor. """ @spec list_external_followings_for_actor_paginated(Actor.t(), integer | nil, integer | nil) :: Page.t() def list_external_followings_for_actor_paginated( %Actor{id: actor_id}, page \\ nil, limit \\ nil ) do actor_id |> list_external_followings_for_actor_query() |> Page.build_page(page, limit) end @doc """ Build a page struct for followings of an actor. """ @spec build_followings_for_actor(Actor.t(), integer | nil, integer | nil) :: Page.t() def build_followings_for_actor(%Actor{id: actor_id}, page \\ nil, limit \\ nil) do actor_id |> followings_actors_for_actor_query() |> Page.build_page(page, limit) end @doc """ Makes an actor following another actor. """ @spec follow(Actor.t(), Actor.t(), String.t() | nil, boolean | nil) :: {:ok, Follower.t()} | {:error, atom, String.t()} def follow(%Actor{} = followed, %Actor{} = follower, url \\ nil, approved \\ true) do with {:suspended, false} <- {:suspended, followed.suspended}, # Check if followed has blocked follower {:already_following, nil} <- {:already_following, is_following(follower, followed)} do Logger.info( "Making #{Actor.preferred_username_and_domain(follower)} follow #{ Actor.preferred_username_and_domain(followed) } " <> "(approved: #{approved})" ) create_follower(%{ "actor_id" => follower.id, "target_actor_id" => followed.id, "approved" => approved, "url" => url }) else {:already_following, %Follower{}} -> {:error, :already_following, "Could not follow actor: you are already following #{ Actor.preferred_username_and_domain(followed) }"} {:suspended, _} -> {:error, :suspended, "Could not follow actor: #{Actor.preferred_username_and_domain(followed)} has been suspended"} end end @doc """ Unfollows an actor (removes a Follower record). """ @spec unfollow(Actor.t(), Actor.t()) :: {:ok, Follower.t()} | {:error, Ecto.Changeset.t() | String.t()} def unfollow(%Actor{} = followed, %Actor{} = follower) do case {:already_following, is_following(follower, followed)} do {:already_following, %Follower{} = follow} -> delete_follower(follow) {:already_following, nil} -> {:error, "Could not unfollow actor: you are not following #{followed.preferred_username}"} end end @doc """ Checks whether an actor is following another actor. """ @spec is_following(Actor.t(), Actor.t()) :: Follower.t() | nil def is_following(%Actor{} = follower_actor, %Actor{} = followed_actor) do get_follower_by_followed_and_following(followed_actor, follower_actor) end @doc """ Whether the actor needs to be updated. Local actors obviously don't need to be updated """ @spec needs_update?(Actor.t()) :: boolean def needs_update?(%Actor{domain: nil}), do: false def needs_update?(%Actor{last_refreshed_at: nil, domain: domain}) when not is_nil(domain), do: true def needs_update?(%Actor{domain: domain} = actor) when not is_nil(domain) do DateTime.diff(DateTime.utc_now(), actor.last_refreshed_at) >= Application.get_env(:mobilizon, :activitypub)[:actor_stale_period] end def needs_update?(_), do: true @spec should_rotate_actor_key(Actor.t()) :: boolean def should_rotate_actor_key(%Actor{id: actor_id}) do with {:ok, value} when is_boolean(value) <- Cachex.exists?(:actor_key_rotation, actor_id) do value end end @spec schedule_key_rotation(Actor.t(), integer()) :: nil def schedule_key_rotation(%Actor{id: actor_id} = actor, delay) do Cachex.put(:actor_key_rotation, actor_id, true) Workers.Background.enqueue("actor_key_rotation", %{"actor_id" => actor.id}, schedule_in: delay) :ok end @spec remove_banner(Actor.t()) :: {:ok, Actor.t()} defp remove_banner(%Actor{banner: nil} = actor), do: {:ok, actor} defp remove_banner(%Actor{banner: %File{url: url}} = actor) do safe_remove_file(url, actor) end @spec remove_avatar(Actor.t()) :: {:ok, Actor.t()} defp remove_avatar(%Actor{avatar: nil} = actor), do: {:ok, actor} defp remove_avatar(%Actor{avatar: %File{url: url}} = actor) do safe_remove_file(url, actor) end @spec safe_remove_file(String.t(), Actor.t()) :: {:ok, Actor.t()} defp safe_remove_file(url, %Actor{} = actor) do case Upload.remove(url) do {:ok, _value} -> {:ok, actor} {:error, error} -> Logger.error("Error while removing an upload file") Logger.debug(inspect(error)) {:ok, actor} end end @spec delete_files_if_media_changed(Ecto.Changeset.t()) :: Ecto.Changeset.t() defp delete_files_if_media_changed(%Ecto.Changeset{changes: changes, data: data} = changeset) do Enum.each([:avatar, :banner], fn key -> if Map.has_key?(changes, key) do with %Ecto.Changeset{changes: %{url: new_url}} <- changes[key], %{url: old_url} <- data |> Map.from_struct() |> Map.get(key), false <- new_url == old_url do Upload.remove(old_url) end end end) changeset end @spec actor_with_preload_query(integer | String.t(), boolean()) :: Ecto.Query.t() defp actor_with_preload_query(actor_id, include_suspended \\ false) defp actor_with_preload_query(actor_id, false) do actor_id |> actor_with_preload_query(true) |> where([a], not a.suspended) end defp actor_with_preload_query(actor_id, true) do Actor |> where([a], a.id == ^actor_id) |> preload([a], [:organized_events, :followers, :followings]) end @spec actor_by_username_query(String.t()) :: Ecto.Query.t() defp actor_by_username_query(username) do from( a in Actor, where: fragment( "f_unaccent(?) <% f_unaccent(?) or f_unaccent(coalesce(?, '')) <% f_unaccent(?)", a.preferred_username, ^username, a.name, ^username ), order_by: fragment( "word_similarity(?, ?) + word_similarity(coalesce(?, ''), ?) desc", a.preferred_username, ^username, a.name, ^username ) ) end @spec actor_by_username_or_name_query(Ecto.Query.t(), String.t()) :: Ecto.Query.t() defp actor_by_username_or_name_query(query, ""), do: query defp actor_by_username_or_name_query(query, username) do query |> where( [a], fragment( "f_unaccent(?) %> f_unaccent(?) or f_unaccent(coalesce(?, '')) %> f_unaccent(?)", a.preferred_username, ^username, a.name, ^username ) ) |> order_by( [a], fragment( "word_similarity(?, ?) + word_similarity(coalesce(?, ''), ?) desc", a.preferred_username, ^username, a.name, ^username ) ) end @spec actors_for_location(Ecto.Query.t(), map()) :: Ecto.Query.t() defp actors_for_location(query, %{radius: radius}) when is_nil(radius), do: query defp actors_for_location(query, %{location: location, radius: radius}) when is_valid_string?(location) and not is_nil(radius) do with {lon, lat} <- Geohax.decode(location), point <- Geo.WKT.decode!("SRID=4326;POINT(#{lon} #{lat})") do query |> join(:inner, [q], a in Address, on: a.id == q.physical_address_id, as: :address) |> where( [q], st_dwithin_in_meters(^point, as(:address).geom, ^(radius * 1000)) ) else _ -> query end end defp actors_for_location(query, _args), do: query @spec person_query :: Ecto.Query.t() defp person_query do from(a in Actor, where: a.type == ^:Person) end @spec group_query :: Ecto.Query.t() defp group_query do from(a in Actor, where: a.type == ^:Group) end @spec groups_member_of_query(integer | String.t()) :: Ecto.Query.t() defp groups_member_of_query(actor_id) do from( a in Actor, join: m in Member, on: a.id == m.parent_id, where: m.actor_id == ^actor_id ) end @spec groups_query :: Ecto.Query.t() defp groups_query do from( a in Actor, where: a.type == ^:Group, where: a.visibility == ^:public ) end @spec list_members_for_user_query(integer()) :: Ecto.Query.t() defp list_members_for_user_query(user_id) do from( m in Member, join: a in Actor, on: m.actor_id == a.id, where: a.user_id == ^user_id and m.role != ^:not_approved, preload: [:parent, :actor, :invited_by] ) end @spec members_for_actor_query(integer | String.t()) :: Ecto.Query.t() defp members_for_actor_query(actor_id) do from( m in Member, where: m.actor_id == ^actor_id, preload: [:parent, :invited_by] ) end @spec members_for_group_query(integer | String.t()) :: Ecto.Query.t() defp members_for_group_query(group_id) do from( m in Member, where: m.parent_id == ^group_id, preload: [:parent, :actor] ) end @spec group_external_member_actor_query(integer()) :: Ecto.Query.t() defp group_external_member_actor_query(group_id) do Member |> where([m], m.parent_id == ^group_id) |> join(:inner, [m], a in Actor, on: m.actor_id == a.id) |> where([_m, a], not is_nil(a.domain)) |> select([_m, a], a) end @spec group_external_member_query(integer()) :: Ecto.Query.t() defp group_external_member_query(group_id) do Member |> where([m], m.parent_id == ^group_id) |> join(:inner, [m], a in Actor, on: m.actor_id == a.id) |> where([_m, a], not is_nil(a.domain)) |> preload([m], [:parent, :actor]) |> select([m, _a], m) end @spec group_internal_member_query(integer()) :: Ecto.Query.t() defp group_internal_member_query(group_id) do Member |> where([m], m.parent_id == ^group_id) |> join(:inner, [m], a in Actor, on: m.actor_id == a.id) |> where([_m, a], is_nil(a.domain)) |> preload([m], [:parent, :actor]) |> select([m, _a], m) end @spec filter_member_role(Ecto.Query.t(), list(atom()) | atom()) :: Ecto.Query.t() def filter_member_role(query, []), do: query def filter_member_role(query, roles) when is_list(roles) do where(query, [m], m.role in ^roles) end def filter_member_role(query, role) when is_atom(role) do from(m in query, where: m.role == ^role) end @spec administrator_members_for_group_query(integer | String.t()) :: Ecto.Query.t() defp administrator_members_for_group_query(group_id) do from( m in Member, where: m.parent_id == ^group_id and m.role in ^@administrator_roles, preload: [:actor] ) end @spec administrator_members_for_actor_query(integer | String.t()) :: Ecto.Query.t() defp administrator_members_for_actor_query(actor_id) do from( m in Member, where: m.actor_id == ^actor_id and m.role in ^@administrator_roles, select: m.parent_id ) end @spec group_ids_where_last_administrator_query(integer | String.t()) :: Ecto.Query.t() defp group_ids_where_last_administrator_query(actor_id) do from( m in Member, where: m.role in ^@administrator_roles, join: m2 in subquery(administrator_members_for_actor_query(actor_id)), on: m.parent_id == m2.parent_id, group_by: m.parent_id, select: m.parent_id, having: count(m.actor_id) == 1 ) end @spec follower_by_url(String.t()) :: Ecto.Query.t() defp follower_by_url(url) do from( f in Follower, where: f.url == ^url, preload: [:actor, :target_actor] ) end @spec follower_by_followed_and_following_query(integer | String.t(), integer | String.t()) :: Ecto.Query.t() defp follower_by_followed_and_following_query(followed_id, follower_id) do from( f in Follower, where: f.target_actor_id == ^followed_id and f.actor_id == ^follower_id, preload: [:actor, :target_actor] ) end @spec follower_actors_for_actor_query(integer | String.t()) :: Ecto.Query.t() defp follower_actors_for_actor_query(actor_id) do from( a in Actor, join: f in Follower, on: a.id == f.actor_id, where: f.target_actor_id == ^actor_id and f.approved == true ) end @spec follower_for_actor_query(integer | String.t()) :: Ecto.Query.t() defp follower_for_actor_query(actor_id) do from( f in Follower, join: a in Actor, on: a.id == f.actor_id, where: f.target_actor_id == ^actor_id ) end @spec followings_actors_for_actor_query(integer | String.t()) :: Ecto.Query.t() defp followings_actors_for_actor_query(actor_id) do from( a in Actor, join: f in Follower, on: a.id == f.target_actor_id, where: f.actor_id == ^actor_id ) end @spec followings_for_actor_query(integer | String.t()) :: Ecto.Query.t() defp followings_for_actor_query(actor_id) do from( f in Follower, join: a in Actor, on: a.id == f.target_actor_id, where: f.actor_id == ^actor_id ) end @spec list_external_follower_actors_for_actor_query(integer) :: Ecto.Query.t() defp list_external_follower_actors_for_actor_query(actor_id) do actor_id |> follower_actors_for_actor_query() |> filter_external() end @spec list_external_followers_for_actor_query(integer) :: Ecto.Query.t() defp list_external_followers_for_actor_query(actor_id) do actor_id |> follower_for_actor_query() |> filter_follower_actors_external() end @spec list_external_followings_for_actor_query(integer) :: Ecto.Query.t() defp list_external_followings_for_actor_query(actor_id) do actor_id |> followings_for_actor_query() |> filter_follower_actors_external() |> order_by(desc: :updated_at) end @spec filter_local(Ecto.Query.t()) :: Ecto.Query.t() defp filter_local(query) do from(a in query, where: is_nil(a.domain)) end @spec filter_external(Ecto.Query.t()) :: Ecto.Query.t() defp filter_external(query) do from(a in query, where: not is_nil(a.domain)) end @spec filter_follower_actors_external(Ecto.Query.t()) :: Ecto.Query.t() defp filter_follower_actors_external(query) do query |> where([_f, a], not is_nil(a.domain)) |> preload([f, a], [:target_actor, :actor]) end @spec filter_by_type(Ecto.Query.t(), ActorType.t()) :: Ecto.Query.t() defp filter_by_type(query, type) when type in [:Person, :Group, :Application, :Service, :Organisation] do from(a in query, where: a.type == ^type) end defp filter_by_type(query, _type), do: query @spec filter_by_types(Ecto.Query.t(), [ActorType.t()]) :: Ecto.Query.t() defp filter_by_types(query, types) do from(a in query, where: a.type in ^types) end @spec filter_by_name(Ecto.Query.t(), [String.t()]) :: Ecto.Query.t() defp filter_by_name(query, [name]) do from(a in query, where: a.preferred_username == ^name and is_nil(a.domain)) end defp filter_by_name(query, [name, domain]) do from(a in query, where: a.preferred_username == ^name and a.domain == ^domain) end @spec preload_followers(Actor.t(), boolean) :: Actor.t() defp preload_followers(actor, true), do: Repo.preload(actor, [:followers]) defp preload_followers(actor, false), do: actor defp delete_actor_organized_events(%Actor{organized_events: organized_events} = actor) do res = Enum.map(organized_events, fn event -> event = Repo.preload(event, [ :organizer_actor, :participants, :picture, :mentions, :comments, :attributed_to, :tags, :physical_address, :contacts ]) ActivityPub.delete(event, actor, false) end) if Enum.all?(res, fn {status, _, _} -> status == :ok end) do {:ok, res} else {:error, res} end end defp delete_actor_empty_comments(%Actor{comments: comments} = actor) do res = Enum.map(comments, fn comment -> comment = Repo.preload(comment, [ :actor, :mentions, :event, :in_reply_to_comment, :origin_comment, :attributed_to, :tags ]) ActivityPub.delete(comment, actor, false) end) if Enum.all?(res, fn {status, _, _} -> status == :ok end) do {:ok, res} else {:error, res} end end defp delete_group_elements(%Actor{type: :Group} = actor, type) do Logger.debug("delete_group_elements #{inspect(type)}") method = case type do :remote_members -> &list_remote_members_for_group/3 :events -> &Events.list_organized_events_for_group/3 :posts -> &Mobilizon.Posts.get_posts_for_group/3 :resources -> &Mobilizon.Resources.get_resources_for_group/3 :todo_lists -> &Mobilizon.Todos.get_todo_lists_for_group/3 :discussions -> &Mobilizon.Discussions.find_discussions_for_actor/3 end res = actor |> accumulate_paginated_elements(method) |> Enum.map(fn element -> ActivityPub.delete(element, actor, false) end) if Enum.all?(res, fn {status, _, _} -> status == :ok end) do Logger.debug("Return OK for all #{to_string(type)}") {:ok, res} else Logger.debug("Something failed #{inspect(res)}") {:error, res} end end defp accumulate_paginated_elements( %Actor{} = actor, method, elements \\ [], page \\ 1, limit \\ 10 ) do Logger.debug("accumulate_paginated_elements") %Page{total: total, elements: new_elements} = page = method.(actor, page, limit) elements = elements ++ new_elements count = length(elements) if count < total do accumulate_paginated_elements(actor, method, elements, page + 1, limit) else Logger.debug("Found #{count} group elements to delete") elements end end # This one is not in the Multi transaction because it sends activities defp delete_eventual_local_members(%Actor{} = group, options) do suspended? = Keyword.get(options, :suspension, false) group |> accumulate_paginated_elements(&list_local_members_for_group/3) |> Enum.map(fn member -> if suspended? do Group.send_group_suspension_notification(member) else with author_id when not is_nil(author_id) <- Keyword.get(options, :author_id), %Actor{} = author <- get_actor(author_id) do Group.send_group_deletion_notification(member, author) end end member end) |> Enum.map(fn member -> ActivityPub.delete(member, group, false) end) end end