debianize-mobilizon/lib/mobilizon/actors/actors.ex

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defmodule Mobilizon.Actors do
@moduledoc """
The Actors context.
"""
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import Ecto.Query
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import EctoEnum
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alias Ecto.Multi
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alias Mobilizon.Actors.{Actor, Bot, Follower, Member}
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alias Mobilizon.{Crypto, Events}
alias Mobilizon.Media.File
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alias Mobilizon.Storage.{Page, Repo}
require Logger
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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, [
:not_approved,
:member,
:moderator,
:administrator,
:creator
])
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@public_visibility [:public, :unlisted]
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@administrator_roles [:creator, :administrator]
@doc """
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Gets a single actor.
"""
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@spec get_actor(integer | String.t()) :: Actor.t() | nil
def get_actor(id), do: Repo.get(Actor, id)
@doc """
Gets a single actor.
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Raises `Ecto.NoResultsError` if the actor does not exist.
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"""
@spec get_actor!(integer | String.t()) :: Actor.t()
def get_actor!(id), do: Repo.get!(Actor, id)
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@doc """
Gets an actor with preloaded relations.
"""
@spec get_actor_with_preload(integer | String.t()) :: Actor.t() | nil
def get_actor_with_preload(id) do
id
|> actor_with_preload_query()
|> Repo.one()
end
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@doc """
Gets a local actor with preloaded relations.
"""
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@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
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@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) do
case Repo.get_by(Actor, url: url) do
nil ->
{:error, :actor_not_found}
actor ->
{:ok, preload_followers(actor, preload)}
end
end
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@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 """
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Gets an actor by name.
"""
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@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
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|> filter_by_type(type)
|> filter_by_name(String.split(name, "@"))
|> Repo.one()
end
@doc """
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Gets a local actor by its preferred username.
"""
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@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
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|> filter_by_name([name])
|> Repo.one()
end
@doc """
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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
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@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)
end
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@doc """
Creates an actor.
"""
@spec create_actor(map) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()}
def create_actor(attrs \\ %{}) do
%Actor{}
|> Actor.changeset(attrs)
|> Repo.insert()
end
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@doc """
Creates a new person actor.
"""
@spec new_person(map) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()}
def new_person(args) do
args = Map.put(args, :keys, Crypto.generate_rsa_2048_private_key())
with {:ok, %Actor{} = person} <-
%Actor{}
|> Actor.registration_changeset(args)
|> Repo.insert() do
Events.create_feed_token(%{"user_id" => args["user_id"], "actor_id" => person.id})
{:ok, person}
end
end
@doc """
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Updates an actor.
"""
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@spec update_actor(Actor.t(), map) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()}
def update_actor(%Actor{} = actor, attrs) do
actor
|> Actor.update_changeset(attrs)
|> delete_files_if_media_changed()
|> Repo.update()
end
@doc """
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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(%{keys: keys, name: name, summary: summary} = data, preload \\ false) do
insert =
data
|> Actor.remote_actor_creation_changeset()
|> Repo.insert(
on_conflict: [set: [keys: keys, name: name, summary: summary]],
conflict_target: [:url]
)
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case insert do
{:ok, actor} ->
actor = if preload, do: Repo.preload(actor, [:followers]), else: actor
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{:ok, actor}
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error ->
Logger.debug(inspect(error))
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{:error, error}
end
end
@doc """
Deletes an actor.
"""
@spec delete_actor(Actor.t()) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()}
def delete_actor(%Actor{domain: nil} = actor) do
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transaction =
Multi.new()
|> Multi.delete(:actor, actor)
|> Multi.run(:remove_banner, fn _, %{actor: %Actor{}} -> remove_banner(actor) end)
|> Multi.run(:remove_avatar, fn _, %{actor: %Actor{}} -> remove_avatar(actor) end)
|> Repo.transaction()
case transaction do
{:ok, %{actor: %Actor{} = actor}} ->
{:ok, actor}
{:error, remove, error, _} when remove in [:remove_banner, :remove_avatar] ->
{:error, error}
end
end
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def delete_actor(%Actor{} = actor), do: Repo.delete(actor)
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@doc """
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Returns the list of actors.
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"""
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@spec list_actors :: [Actor.t()]
def list_actors, do: Repo.all(Actor)
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@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(
String.t(),
[ActorType.t()],
integer | nil,
integer | nil
) :: Page.t()
def build_actors_by_username_or_name_page(username, types, page \\ nil, limit \\ nil) do
username
|> actor_by_username_or_name_query()
|> filter_by_types(types)
|> Page.build_page(page, limit)
end
@doc """
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Gets a group by its title.
"""
@spec get_group_by_title(String.t()) :: Actor.t() | nil
def get_group_by_title(title) do
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group_query()
|> filter_by_name(String.split(title, "@"))
|> Repo.one()
end
@doc """
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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
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group_query()
|> filter_by_name([title])
|> Repo.one()
end
@doc """
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Gets a group by its actor id.
"""
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@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}
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actor ->
{:ok, actor}
end
end
@doc """
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Creates a group.
"""
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@spec create_group(map) :: {:ok, Actor.t()} | {:error, Ecto.Changeset.t()}
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def create_group(attrs \\ %{}) do
%Actor{}
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|> Actor.group_creation_changeset(attrs)
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|> Repo.insert()
end
@doc """
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Deletes a group.
"""
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def delete_group!(%Actor{type: :Group} = group), do: Repo.delete!(group)
@doc """
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Lists the groups.
"""
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@spec list_groups(integer | nil, integer | nil) :: [Actor.t()]
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def list_groups(page \\ nil, limit \\ nil) do
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groups_query()
|> Page.paginate(page, limit)
|> Repo.all()
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end
@doc """
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Returns the list of groups an actor is member of.
"""
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@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 """
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Gets a single member.
Raises `Ecto.NoResultsError` if the member does not exist.
"""
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@spec get_member!(integer | String.t()) :: Member.t()
def get_member!(id), do: Repo.get!(Member, id)
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@doc """
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Gets a single member of an actor (for example a group).
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"""
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@spec get_member(integer | String.t(), integer | String.t()) ::
{:ok, Member.t()} | {:error, :member_not_found}
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def get_member(actor_id, parent_id) do
case Repo.get_by(Member, actor_id: actor_id, parent_id: parent_id) do
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nil ->
{:error, :member_not_found}
member ->
{:ok, member}
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end
end
@doc """
Creates a member.
"""
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@spec create_member(map) :: {:ok, Member.t()} | {:error, Ecto.Changeset.t()}
def create_member(attrs \\ %{}) do
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with {:ok, %Member{} = member} <-
%Member{}
|> Member.changeset(attrs)
|> Repo.insert() do
{:ok, Repo.preload(member, [:actor, :parent])}
end
end
@doc """
Updates a member.
"""
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@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 """
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Deletes a member.
"""
@spec delete_member(Member.t()) :: {:ok, Member.t()} | {:error, Ecto.Changeset.t()}
def delete_member(%Member{} = member), do: Repo.delete(member)
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@doc """
Returns the list of members for an actor.
"""
@spec list_members_for_actor(Actor.t()) :: [Member.t()]
def list_members_for_actor(%Actor{id: actor_id}) do
actor_id
|> members_for_actor_query()
|> Repo.all()
end
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@doc """
Returns the list of members for a group.
"""
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@spec list_members_for_group(Actor.t()) :: [Member.t()]
def list_members_for_group(%Actor{id: group_id, type: :Group}) do
group_id
|> members_for_group_query()
|> Repo.all()
end
@doc """
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Returns the list of administrator members for a group.
"""
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@spec list_administrator_members_for_group(integer | String.t(), integer | nil, integer | nil) ::
[Member.t()]
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def list_administrator_members_for_group(id, page \\ nil, limit \\ nil) do
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id
|> administrator_members_for_group_query()
|> Page.paginate(page, limit)
|> Repo.all()
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end
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@doc """
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Returns the list of all group ids where the actor_id is the last administrator.
"""
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@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 """
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Gets a single bot.
Raises `Ecto.NoResultsError` if the bot does not exist.
"""
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def get_bot!(id), do: Repo.get!(Bot, id)
@doc """
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Gets the bot associated to an actor.
"""
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@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.
"""
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@spec create_bot(map) :: {:ok, Bot.t()} | {:error, Ecto.Changeset.t()}
def create_bot(attrs \\ %{}) do
%Bot{}
|> Bot.changeset(attrs)
|> Repo.insert()
end
@doc """
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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
}
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%Actor{}
|> Actor.registration_changeset(attrs)
|> Repo.insert()
end
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@spec get_or_create_actor_by_url(String.t(), String.t()) ::
{:ok, Actor.t()} | {:error, Ecto.Changeset.t()}
def get_or_create_actor_by_url(url, preferred_username \\ "relay") do
case get_actor_by_url(url) do
{:ok, %Actor{} = actor} ->
{:ok, actor}
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_ ->
%{url: url, preferred_username: preferred_username}
|> Actor.relay_creation_changeset()
|> Repo.insert()
end
end
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@doc """
Updates a bot.
"""
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@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 """
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Deletes a bot.
"""
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@spec delete_bot(Bot.t()) :: {:ok, Bot.t()} | {:error, Ecto.Changeset.t()}
def delete_bot(%Bot{} = bot), do: Repo.delete(bot)
@doc """
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Returns the list of bots.
"""
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@spec list_bots :: [Bot.t()]
def list_bots, do: Repo.all(Bot)
@doc """
Gets a single follower.
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Raises `Ecto.NoResultsError` if the follower does not exist.
"""
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@spec get_follower!(integer | String.t()) :: Follower.t()
def get_follower!(id) do
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Follower
|> Repo.get!(id)
|> Repo.preload([:actor, :target_actor])
end
@doc """
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Get a follower by the url.
"""
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@spec get_follower_by_url(String.t()) :: Follower.t()
def get_follower_by_url(url) do
url
|> follower_by_url()
|> Repo.one()
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end
@doc """
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Gets a follower by the followed actor and following actor
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"""
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@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()
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end
@doc """
Creates a follower.
"""
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@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.
"""
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@spec update_follower(Follower.t(), map) :: {:ok, Follower.t()} | {:error, Ecto.Changeset.t()}
def update_follower(%Follower{} = follower, attrs) do
follower
|> Follower.changeset(attrs)
|> Repo.update()
end
@doc """
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Deletes a follower.
"""
@spec delete_follower(Follower.t()) :: {:ok, Follower.t()} | {:error, Ecto.Changeset.t()}
def delete_follower(%Follower{} = follower), do: Repo.delete(follower)
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@doc """
Deletes a follower by followed and following actors.
"""
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@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 """
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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_for_actor(Actor.t()) :: [Follower.t()]
def list_followers_for_actor(%Actor{id: actor_id}) do
actor_id
|> followers_for_actor_query()
|> Repo.all()
end
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@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
|> followers_for_actor_query()
|> filter_external()
|> Repo.all()
end
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@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
|> followers_for_actor_query()
|> Page.build_page(page, limit)
end
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@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_for_actor_query()
|> Repo.all()
end
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@doc """
Build a page struct for followings of an actor.
"""
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@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_for_actor_query()
|> Page.build_page(page, limit)
end
@doc """
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Makes an actor following another actor.
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"""
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@spec follow(Actor.t(), Actor.t(), String.t() | nil, boolean | nil) ::
{:ok, Follower.t()} | {:error, atom, String.t()}
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def follow(%Actor{} = followed, %Actor{} = follower, url \\ nil, approved \\ true) do
with {:suspended, false} <- {:suspended, followed.suspended},
# Check if followed has blocked follower
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{:already_following, nil} <- {:already_following, is_following(follower, followed)} do
Logger.info(
"Making #{follower.preferred_username} follow #{followed.preferred_username} " <>
"(approved: #{approved})"
)
create_follower(%{
"actor_id" => follower.id,
"target_actor_id" => followed.id,
"approved" => approved,
"url" => url
})
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else
{:already_following, %Follower{}} ->
{:error, :already_following,
"Could not follow actor: you are already following #{followed.preferred_username}"}
{:suspended, _} ->
{:error, :suspended,
"Could not follow actor: #{followed.preferred_username} has been suspended"}
end
end
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@doc """
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Unfollows an actor (removes a Follower record).
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"""
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@spec unfollow(Actor.t(), Actor.t()) ::
{:ok, Follower.t()} | {:error, Ecto.Changeset.t() | String.t()}
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def unfollow(%Actor{} = followed, %Actor{} = follower) do
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case {:already_following, is_following(follower, followed)} do
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{:already_following, %Follower{} = follow} ->
delete_follower(follow)
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{:already_following, nil} ->
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{:error, "Could not unfollow actor: you are not following #{followed.preferred_username}"}
end
end
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@doc """
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Checks whether an actor is following another actor.
"""
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@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
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@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
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@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
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@spec safe_remove_file(String.t(), Actor.t()) :: {:ok, Actor.t()}
defp safe_remove_file(url, %Actor{} = actor) do
case MobilizonWeb.Upload.remove(url) do
{:ok, _value} ->
{:ok, actor}
{:error, error} ->
Logger.error("Error while removing an upload file")
Logger.debug(inspect(error))
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{:ok, actor}
end
end
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@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
MobilizonWeb.Upload.remove(old_url)
end
end
end)
changeset
end
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@spec actor_with_preload_query(integer | String.t()) :: Ecto.Query.t()
defp actor_with_preload_query(actor_id) do
from(
a in Actor,
where: a.id == ^actor_id,
preload: [: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(String.t()) :: Ecto.Query.t()
defp actor_by_username_or_name_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 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,
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where: a.visibility in ^@public_visibility
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)
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]
)
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 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
)
end
@spec followers_for_actor_query(integer | String.t()) :: Ecto.Query.t()
defp followers_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
)
end
@spec followings_for_actor_query(integer | String.t()) :: Ecto.Query.t()
defp followings_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 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_by_type(Ecto.Query.t(), ActorType.t()) :: Ecto.Query.t()
defp filter_by_type(query, type) when type in [:Person, :Group] 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
end