mobilizon/lib/graphql/resolvers/person.ex

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defmodule Mobilizon.GraphQL.Resolvers.Person do
@moduledoc """
Handles the person-related GraphQL calls
"""
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import Mobilizon.Users.Guards
alias Mobilizon.{Actors, Events, Users}
alias Mobilizon.Actors.{Actor, Follower, Member}
alias Mobilizon.Events.Participant
alias Mobilizon.Service.Akismet
alias Mobilizon.Storage.{Page, Repo}
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alias Mobilizon.Users.User
import Mobilizon.Web.Gettext
alias Mobilizon.Federation.ActivityPub.Actions
alias Mobilizon.Federation.ActivityPub.Actor, as: ActivityPubActor
require Logger
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alias Mobilizon.Web.Upload
@doc """
Get a person
"""
@spec get_person(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Actor.t()} | {:error, String.t() | :unauthorized}
def get_person(_parent, %{id: id}, %{context: %{current_user: %User{role: role}}}) do
with %Actor{suspended: suspended} = actor <- Actors.get_actor_with_preload(id, true),
true <- suspended == false or is_moderator(role) do
{:ok, actor}
else
_ ->
{:error, dgettext("errors", "Person with ID %{id} not found", id: id)}
end
end
def get_person(_parent, _args, _resolution), do: {:error, :unauthorized}
@doc """
Find a person
"""
@spec fetch_person(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Actor.t()} | {:error, String.t() | :unauthorized | :unauthenticated}
def fetch_person(_parent, %{preferred_username: preferred_username}, %{
context: %{current_user: %User{} = user}
}) do
with {:ok, %Actor{id: actor_id} = actor} <-
ActivityPubActor.find_or_make_actor_from_nickname(preferred_username),
{:own, {:is_owned, _}} <- {:own, User.owns_actor(user, actor_id)} do
{:ok, actor}
else
{:own, nil} ->
{:error, :unauthorized}
_ ->
{:error,
dgettext("errors", "Person with username %{username} not found",
username: preferred_username
)}
end
end
def fetch_person(_parent, _args, _resolution), do: {:error, :unauthenticated}
@spec list_persons(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Page.t(Actor.t())} | {:error, :unauthorized | :unauthenticated}
def list_persons(
_parent,
%{
preferred_username: preferred_username,
name: name,
domain: domain,
local: local,
suspended: suspended,
page: page,
limit: limit
},
%{
context: %{current_user: %User{role: role}}
}
)
when is_moderator(role) do
{:ok,
Actors.list_actors(:Person, preferred_username, name, domain, local, suspended, page, limit)}
end
def list_persons(_parent, _args, %{
context: %{current_user: %User{role: role}}
})
when not is_moderator(role) do
{:error, :unauthorized}
end
def list_persons(_parent, _args, _resolution) do
{:error, :unauthenticated}
end
@doc """
Returns the current actor for the currently logged-in user
"""
@spec get_current_person(any, any, Absinthe.Resolution.t()) ::
{:error, :unauthenticated | :no_current_person} | {:ok, Actor.t()}
def get_current_person(_parent, _args, %{context: %{current_actor: %Actor{} = actor}}) do
{:ok, actor}
end
def get_current_person(_parent, _args, %{context: %{current_user: %User{}}}) do
{:error, :no_current_person}
end
def get_current_person(_parent, _args, _resolution) do
{:error, :unauthenticated}
end
@doc """
Returns the list of identities for the logged-in user
"""
@spec identities(any, any, Absinthe.Resolution.t()) ::
{:error, :unauthenticated} | {:ok, list(Actor.t())}
def identities(_parent, _args, %{context: %{current_user: user}}) do
{:ok, Users.get_actors_for_user(user)}
end
def identities(_parent, _args, _resolution) do
{:error, :unauthenticated}
end
@doc """
This function is used to create more identities from an existing user
"""
@spec create_person(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Actor.t()} | {:error, String.t() | :unauthenticated}
def create_person(
_parent,
%{preferred_username: _preferred_username} = args,
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%{context: %{current_user: user}} = _resolution
) do
args = Map.put(args, :user_id, user.id)
with args <- Map.update(args, :preferred_username, "", &String.downcase/1),
{:akismet, :ham} <-
{:akismet,
Akismet.check_profile(
args.preferred_username,
args.summary,
user.email,
user.current_sign_in_ip
)},
{:picture, args} when is_map(args) <- {:picture, save_attached_pictures(args)},
{:ok, %Actor{} = new_person} <- Actors.new_person(args) do
{:ok, new_person}
else
{:error, err} ->
{:error, err}
{:picture, {:error, :file_too_large}} ->
{:error, dgettext("errors", "The provided picture is too heavy")}
end
end
def create_person(_parent, _args, _resolution) do
{:error, :unauthenticated}
end
@doc """
This function is used to update an existing identity
"""
@spec update_person(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Actor.t()} | {:error, String.t() | :unauthenticated}
def update_person(
_parent,
%{id: id} = args,
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%{context: %{current_user: user}} = _resolution
) do
require Logger
args = Map.put(args, :user_id, user.id)
case owned_actor(user, id) do
{:ok, %Actor{} = actor} ->
case save_attached_pictures(args) do
args when is_map(args) ->
case Actions.Update.update(actor, args, true) do
{:ok, _activity, %Actor{} = actor} ->
{:ok, actor}
{:error, err} ->
{:error, err}
end
{:error, :file_too_large} ->
{:error, dgettext("errors", "The provided picture is too heavy")}
end
{:error, err} ->
{:error, err}
end
end
def update_person(_parent, _args, _resolution) do
{:error, :unauthenticated}
end
@doc """
This function is used to delete an existing identity
"""
@spec delete_person(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Actor.t()} | {:error, String.t() | :unauthenticated}
def delete_person(
_parent,
%{id: id} = _args,
%{context: %{current_user: %User{} = user}} = _resolution
) do
case owned_actor(user, id) do
{:ok, %Actor{} = actor} ->
if last_identity?(user) do
{:error, dgettext("errors", "Cannot remove the last identity of a user")}
else
if last_admin_of_a_group?(actor.id) do
{:error, dgettext("errors", "Cannot remove the last administrator of a group")}
else
Actors.delete_actor(actor)
end
end
{:error, err} ->
{:error, err}
end
end
def delete_person(_parent, _args, _resolution) do
{:error, :unauthenticated}
end
@spec owned_actor(User.t(), integer() | String.t()) :: {:error, String.t()} | {:ok, Actor.t()}
defp owned_actor(%User{} = user, actor_id) do
with {:find_actor, %Actor{} = actor} <-
{:find_actor, Actors.get_actor(actor_id)},
{:is_owned, %Actor{}} <- User.owns_actor(user, actor.id) do
{:ok, actor}
else
{:find_actor, nil} ->
{:error, dgettext("errors", "Profile not found")}
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{:is_owned, nil} ->
{:error, dgettext("errors", "Profile is not owned by authenticated user")}
end
end
@spec last_identity?(User.t()) :: boolean
defp last_identity?(user) do
length(Users.get_actors_for_user(user)) <= 1
end
@spec save_attached_pictures(map()) :: map() | {:error, any()}
defp save_attached_pictures(args) do
case save_attached_picture(args, :avatar) do
{:error, err} ->
{:error, err}
args when is_map(args) ->
case save_attached_picture(args, :banner) do
{:error, err} ->
{:error, err}
args when is_map(args) ->
args
end
end
end
@spec save_attached_picture(map(), :avatar | :banner) :: map() | {:error, any}
defp save_attached_picture(args, key) do
if Map.has_key?(args, key) && !is_nil(args[key][:media]) do
case save_picture(args[key][:media], key) do
{:error, err} ->
{:error, err}
media when is_map(media) ->
Map.put(args, key, media)
end
else
args
end
end
@spec save_picture(map(), :avatar | :banner) :: {:ok, map()} | {:error, any()}
defp save_picture(media, key) do
case Upload.store(media.file, type: key, description: media.alt) do
{:ok, %{name: name, url: url, content_type: content_type, size: size}} ->
%{"name" => name, "url" => url, "content_type" => content_type, "size" => size}
{:error, err} ->
{:error, err}
end
end
@doc """
This function is used to register a person afterwards the user has been created (but not activated)
"""
@spec register_person(any(), map(), Absinthe.Resolution.t()) ::
{:ok, Actor.t()} | {:error, String.t()}
def register_person(_parent, args, %{context: context}) do
current_ip = Map.get(context, :ip)
user_agent = Map.get(context, :user_agent, "")
# When registering, email is assumed confirmed (unlike changing email)
case Users.get_user_by_email(args.email, unconfirmed: false) do
{:ok, %User{} = user} ->
if is_nil(Users.get_actor_for_user(user)) do
# No profile yet, we can create one
with {:akismet, :ham} <-
{:akismet,
Akismet.check_profile(
args.preferred_username,
args.summary,
args.email,
current_ip,
user_agent
)},
args when is_map(args) <- prepare_args(args, user) do
Actors.new_person(args, true)
else
{:error, :file_too_large} ->
{:error, dgettext("errors", "The provided picture is too heavy")}
{:error, _err} ->
{:error, dgettext("errors", "Error while uploading pictures")}
{:akismet, _} ->
{:error, dgettext("errors", "Your profile was detected as spam.")}
end
else
{:error, dgettext("errors", "You already have a profile for this user")}
end
{:error, :user_not_found} ->
{:error, dgettext("errors", "No user with this email was found")}
end
end
@spec prepare_args(map(), User.t()) :: map() | {:error, any()}
defp prepare_args(args, %User{} = user) do
args
|> Map.update(:preferred_username, "", &String.downcase/1)
|> Map.put(:user_id, user.id)
|> save_attached_pictures()
end
@doc """
Returns the participations, optionally restricted to an event
"""
@spec person_participations(Actor.t(), map(), Absinthe.Resolution.t()) ::
{:ok, Page.t(Participant.t())} | {:error, :unauthorized | String.t()}
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def person_participations(
%Actor{id: actor_id} = person,
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%{event_id: event_id},
%{context: %{current_user: %User{} = user}}
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) do
if user_can_access_person_details?(person, user) do
case Events.get_participant(event_id, actor_id) do
{:ok, %Participant{} = participant} -> {:ok, %Page{elements: [participant], total: 1}}
{:error, :participant_not_found} -> {:ok, %Page{elements: [], total: 0}}
end
else
{:error, :unauthorized}
end
end
def person_participations(%Actor{} = person, %{page: page, limit: limit}, %{
context: %{current_user: %User{} = user}
}) do
if user_can_access_person_details?(person, user) do
%Page{} = page = Events.list_event_participations_for_actor(person, page, limit)
{:ok, page}
else
{:error, dgettext("errors", "Profile is not owned by authenticated user")}
end
end
@doc """
Returns this person's group memberships
"""
@spec person_memberships(Actor.t(), map(), map()) ::
{:ok, Page.t(Member.t())} | {:error, String.t()}
def person_memberships(%Actor{id: actor_id} = person, args, %{
context: %{current_user: %User{} = user}
}) do
if user_can_access_person_details?(person, user) do
with {:group, %Actor{id: group_id}} <- {:group, group_from_args(args)},
{:ok, %Member{} = membership} <- Actors.get_member(actor_id, group_id) do
{:ok,
%Page{
total: 1,
elements: [Repo.preload(membership, [:actor, :parent, :invited_by])]
}}
else
{:error, :member_not_found} ->
{:ok, %Page{total: 0, elements: []}}
{:group, :none} ->
with {:can_get_memberships, true} <-
{:can_get_memberships, user_can_access_person_details?(person, user)},
memberships <-
Actors.list_members_for_actor(
person,
Map.get(args, :page, 1),
Map.get(args, :limit, 10)
) do
{:ok, memberships}
else
{:can_get_memberships, _} ->
{:error, dgettext("errors", "Profile is not owned by authenticated user")}
end
{:group, nil} ->
{:error, :group_not_found}
end
else
{:error, dgettext("errors", "Profile is not owned by authenticated user")}
end
end
@doc """
Returns this person's group follows
"""
@spec person_follows(Actor.t(), map(), map()) ::
{:ok, Page.t(Follower.t())} | {:error, String.t()}
def person_follows(%Actor{} = person, %{group: group}, %{
context: %{current_user: %User{} = user}
}) do
if user_can_access_person_details?(person, user) do
with {:group, %Actor{} = group} <- {:group, Actors.get_actor_by_name(group, :Group)},
%Follower{} = follow <-
Actors.get_follower_by_followed_and_following(group, person) do
{:ok,
%Page{
total: 1,
elements: [follow]
}}
else
nil ->
{:ok, %Page{total: 0, elements: []}}
{:group, nil} ->
{:error, :group_not_found}
end
else
{:error, dgettext("errors", "Profile is not owned by authenticated user")}
end
end
def person_follows(
%Actor{} = person,
%{page: page, limit: limit},
%{
context: %{current_user: %User{} = user}
}
) do
if user_can_access_person_details?(person, user) do
follows = Actors.list_paginated_follows_for_actor(person, page, limit)
{:ok, follows}
else
{:error, dgettext("errors", "Profile is not owned by authenticated user")}
end
end
@spec user_for_person(Actor.t(), map(), Absinthe.Resolution.t()) ::
{:ok, User.t() | nil} | {:error, String.t() | nil}
def user_for_person(%Actor{type: :Person, user_id: user_id}, _args, %{
context: %{current_user: %User{role: role}}
})
when is_moderator(role) do
with false <- is_nil(user_id),
%User{} = user <- Users.get_user(user_id) do
{:ok, user}
else
true ->
{:ok, nil}
_ ->
{:error, :user_not_found}
end
end
def user_for_person(_, _args, _resolution), do: {:error, nil}
@spec organized_events_for_person(Actor.t(), map(), Absinthe.Resolution.t()) ::
{:ok, Page.t(Event.t())} | {:error, :unauthorized}
def organized_events_for_person(
%Actor{} = person,
%{page: page, limit: limit},
%{
context: %{current_user: %User{} = user}
}
) do
if user_can_access_person_details?(person, user) do
%Page{} = page = Events.list_organized_events_for_actor(person, page, limit)
{:ok, page}
else
{:error, :unauthorized}
end
end
def organized_events_for_person(_parent, _args, _resolution),
do: {:ok, %Page{elements: [], total: 0}}
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# We check that the actor is not the last administrator/creator of a group
@spec last_admin_of_a_group?(integer()) :: boolean()
defp last_admin_of_a_group?(actor_id) do
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length(Actors.list_group_ids_where_last_administrator(actor_id)) > 0
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end
@spec user_can_access_person_details?(Actor.t(), User.t()) :: boolean()
defp user_can_access_person_details?(%Actor{}, %User{role: role}) when is_moderator(role),
do: true
defp user_can_access_person_details?(%Actor{type: :Person, user_id: actor_user_id}, %User{
id: user_id
})
when not is_nil(user_id),
do: actor_user_id == user_id
defp user_can_access_person_details?(_, _), do: false
@spec group_from_args(map()) :: Actor.t() | nil
defp group_from_args(%{group: group}) do
Actors.get_actor_by_name(group, :Group)
end
defp group_from_args(%{group_id: group_id}) do
Actors.get_actor(group_id)
end
defp group_from_args(_) do
:none
end
end