mobilizon/lib/graphql/resolvers/member.ex

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defmodule Mobilizon.GraphQL.Resolvers.Member do
@moduledoc """
Handles the member-related GraphQL calls
"""
import Mobilizon.Users.Guards
alias Mobilizon.{Actors, Users}
alias Mobilizon.Actors.{Actor, Member}
alias Mobilizon.Federation.ActivityPub
alias Mobilizon.Federation.ActivityPub.Refresher
alias Mobilizon.Storage.Page
alias Mobilizon.Users.User
import Mobilizon.Web.Gettext
@doc """
Find members for group.
If actor requesting is not part of the group, we only return the number of members, not members
"""
def find_members_for_group(
%Actor{id: group_id} = group,
%{page: page, limit: limit, roles: roles},
%{
context: %{current_user: %User{role: user_role} = user}
} = _resolution
) do
with %Actor{id: actor_id} <- Users.get_actor_for_user(user),
{:member, true} <-
{:member, Actors.is_member?(actor_id, group_id) or is_moderator(user_role)} do
roles =
case roles do
"" ->
[]
roles ->
roles
|> String.split(",")
|> Enum.map(&String.downcase/1)
|> Enum.map(&String.to_existing_atom/1)
end
%Page{} = page = Actors.list_members_for_group(group, roles, page, limit)
{:ok, page}
else
{:member, false} ->
# Actor is not member of group, fallback to public
with %Page{} = page <- Actors.list_members_for_group(group) do
{:ok, %Page{page | elements: []}}
end
end
end
def find_members_for_group(%Actor{} = group, _args, _resolution) do
with %Page{} = page <- Actors.list_members_for_group(group) do
{:ok, %Page{page | elements: []}}
end
end
def invite_member(
_parent,
%{group_id: group_id, target_actor_username: target_actor_username},
%{context: %{current_user: %User{} = user}}
) do
with %Actor{id: actor_id} = actor <- Users.get_actor_for_user(user),
{:ok, %Actor{} = group} <- Actors.get_group_by_actor_id(group_id),
{:has_rights_to_invite, {:ok, %Member{role: role}}}
when role in [:moderator, :administrator, :creator] <-
{:has_rights_to_invite, Actors.get_member(actor_id, group_id)},
target_actor_username <-
target_actor_username |> String.trim() |> String.trim_leading("@"),
{:target_actor_username, {:ok, %Actor{id: target_actor_id} = target_actor}} <-
{:target_actor_username,
ActivityPub.find_or_make_actor_from_nickname(target_actor_username)},
{:existant, true} <-
{:existant, check_member_not_existant_or_rejected(target_actor_id, group.id)},
{:ok, _activity, %Member{} = member} <- ActivityPub.invite(group, actor, target_actor) do
{:ok, member}
else
{:is_owned, nil} ->
{:error, dgettext("errors", "Profile is not owned by authenticated user")}
{:error, :group_not_found} ->
{:error, dgettext("errors", "Group not found")}
{:target_actor_username, _} ->
{:error, dgettext("errors", "Profile invited doesn't exist")}
{:has_rights_to_invite, {:error, :member_not_found}} ->
{:error, dgettext("errors", "You are not a member of this group")}
{:has_rights_to_invite, _} ->
{:error, dgettext("errors", "You cannot invite to this group")}
{:existant, _} ->
{:error, dgettext("errors", "Profile is already a member of this group")}
# Remove me ?
{:ok, %Member{}} ->
{:error, dgettext("errors", "Profile is already a member of this group")}
end
end
def accept_invitation(_parent, %{id: member_id}, %{context: %{current_user: %User{} = user}}) do
with %Actor{id: actor_id} <- Users.get_actor_for_user(user),
%Member{actor: %Actor{id: member_actor_id} = actor} = member <-
Actors.get_member(member_id),
{:is_same_actor, true} <- {:is_same_actor, member_actor_id === actor_id},
{:ok, _activity, %Member{} = member} <-
ActivityPub.accept(
:invite,
member,
true
) do
# Launch an async task to refresh the group profile, fetch resources, discussions, members
Refresher.fetch_group(member.parent.url, actor)
{:ok, member}
else
{:is_same_actor, false} ->
{:error, dgettext("errors", "You can't accept this invitation with this profile.")}
end
end
def reject_invitation(_parent, %{id: member_id}, %{context: %{current_user: %User{} = user}}) do
with %Actor{id: actor_id} <- Users.get_actor_for_user(user),
{:invitation_exists, %Member{actor: %Actor{id: member_actor_id}} = member} <-
{:invitation_exists, Actors.get_member(member_id)},
{:is_same_actor, true} <- {:is_same_actor, member_actor_id === actor_id},
{:ok, _activity, %Member{} = member} <-
ActivityPub.reject(
:invite,
member,
true
) do
{:ok, member}
else
{:is_same_actor, false} ->
{:error, dgettext("errors", "You can't reject this invitation with this profile.")}
{:invitation_exists, _} ->
{:error, dgettext("errors", "This invitation doesn't exist.")}
end
end
def update_member(_parent, %{member_id: member_id, role: role}, %{
context: %{current_user: %User{} = user}
}) do
with %Actor{} = moderator <- Users.get_actor_for_user(user),
%Member{} = member <- Actors.get_member(member_id),
{:ok, _activity, %Member{} = member} <-
ActivityPub.update(member, %{role: role}, true, %{moderator: moderator}) do
{:ok, member}
else
{:has_rights_to_update_role, {:error, :member_not_found}} ->
{:error, dgettext("errors", "You are not a moderator or admin for this group")}
{:is_only_admin, true} ->
{:error,
dgettext(
"errors",
"You can't set yourself to a lower member role for this group because you are the only administrator"
)}
end
end
def update_member(_parent, _args, _resolution),
do: {:error, "You must be logged-in to update a member"}
def remove_member(_parent, %{member_id: member_id, group_id: group_id}, %{
context: %{current_user: %User{} = user}
}) do
with %Actor{id: moderator_id} = moderator <- Users.get_actor_for_user(user),
%Member{role: role} = member when role != :rejected <- Actors.get_member(member_id),
%Actor{type: :Group} = group <- Actors.get_actor(group_id),
{:has_rights_to_remove, {:ok, %Member{role: role}}}
when role in [:moderator, :administrator, :creator] <-
{:has_rights_to_remove, Actors.get_member(moderator_id, group_id)},
{:ok, _activity, %Member{}} <- ActivityPub.remove(member, group, moderator, true) do
{:ok, member}
else
%Member{role: :rejected} ->
{:error,
dgettext(
"errors",
"This member already has been rejected."
)}
{:has_rights_to_remove, _} ->
{:error,
dgettext(
"errors",
"You don't have the right to remove this member."
)}
end
end
# Rejected members can be invited again
@spec check_member_not_existant_or_rejected(String.t() | integer, String.t() | integer()) ::
boolean()
defp check_member_not_existant_or_rejected(target_actor_id, group_id) do
case Actors.get_member(target_actor_id, group_id) do
{:ok, %Member{role: :rejected}} ->
true
{:error, :member_not_found} ->
true
_err ->
false
end
end
end