mobilizon/lib/graphql/resolvers/participant.ex

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defmodule Mobilizon.GraphQL.Resolvers.Participant do
@moduledoc """
Handles the participation-related GraphQL calls.
"""
alias Mobilizon.{Actors, Config, Crypto, Events}
alias Mobilizon.Actors.Actor
alias Mobilizon.Events.{Event, Participant}
alias Mobilizon.GraphQL.API.Participations
alias Mobilizon.GraphQL.Resolvers.Person
alias Mobilizon.Users.User
alias Mobilizon.Web.Email
alias Mobilizon.Web.Email.Checker
require Logger
@doc """
Join an event for an regular actor
"""
def actor_join_event(
_parent,
%{actor_id: actor_id, event_id: event_id} = args,
%{context: %{current_user: %User{} = user}}
) do
case User.owns_actor(user, actor_id) do
{:is_owned, %Actor{} = actor} ->
do_actor_join_event(actor, event_id, args)
_ ->
{:error, "Actor id is not owned by authenticated user"}
end
end
@doc """
Join an event for an anonymous actor
"""
def actor_join_event(
_parent,
%{actor_id: actor_id, event_id: event_id} = args,
_resolution
) do
with {:has_event, {:ok, %Event{} = event}} <-
{:has_event, Mobilizon.Events.get_event_with_preload(event_id)},
{:anonymous_participation_enabled, true} <-
{:anonymous_participation_enabled,
event.local == true && Config.anonymous_participation?() &&
event.options.anonymous_participation == true},
{:anonymous_actor_id, true} <-
{:anonymous_actor_id, to_string(Config.anonymous_actor_id()) == actor_id},
{:email_required, true} <-
{:email_required,
Config.anonymous_participation_email_required?() &&
args |> Map.get(:email) |> valid_email?()},
{:confirmation_token, {confirmation_token, role}} <-
{:confirmation_token,
if(Config.anonymous_participation_email_confirmation_required?(),
do: {Crypto.random_string(30), :not_confirmed},
else: {nil, :participant}
)},
# We only federate if the participation is not to be confirmed later
args <-
args
|> Map.put(:confirmation_token, confirmation_token)
|> Map.put(:cancellation_token, Crypto.random_string(30))
|> Map.put(:role, role)
|> Map.put(:local, role == :participant),
{:actor_not_found, %Actor{} = actor} <-
{:actor_not_found, Actors.get_actor_with_preload(actor_id)},
{:ok, %Participant{} = participant} <- do_actor_join_event(actor, event_id, args) do
if Config.anonymous_participation_email_required?() &&
Config.anonymous_participation_email_confirmation_required?() do
args
|> Map.get(:email)
|> Email.Participation.anonymous_participation_confirmation(participant)
|> Email.Mailer.deliver_later()
end
{:ok, participant}
else
{:error, err} ->
{:error, err}
{:has_event, _} ->
{:error, "Event with this ID #{inspect(event_id)} doesn't exist"}
{:anonymous_participation_enabled, false} ->
{:error, "Anonymous participation is not enabled"}
{:anonymous_actor_id, false} ->
{:error, "Actor ID provided is not the anonymous actor one"}
{:email_required, _} ->
{:error, "A valid email is required by your instance"}
{:actor_not_found, _} ->
Logger.error(
"The actor ID \"#{actor_id}\" provided by configuration doesn't match any actor in database"
)
{:error, "Internal Error"}
end
end
def actor_join_event(_parent, _args, _resolution) do
{:error, "You need to be logged-in to join an event"}
end
@spec do_actor_join_event(Actor.t(), integer | String.t(), map()) ::
{:ok, Participant.t()} | {:error, String.t()}
defp do_actor_join_event(actor, event_id, args \\ %{}) do
with {:has_event, {:ok, %Event{} = event}} <-
{:has_event, Events.get_event_with_preload(event_id)},
{:ok, _activity, participant} <- Participations.join(event, actor, args),
%Participant{} = participant <-
participant
|> Map.put(:event, event)
|> Map.put(:actor, Person.proxify_pictures(actor)) do
{:ok, participant}
else
{:maximum_attendee_capacity, _} ->
{:error, "The event has already reached its maximum capacity"}
{:has_event, _} ->
{:error, "Event with this ID #{inspect(event_id)} doesn't exist"}
{:error, :event_not_found} ->
{:error, "Event id not found"}
{:ok, %Participant{}} ->
{:error, "You are already a participant of this event"}
end
end
@doc """
Leave an event for an actor
"""
def actor_leave_event(
_parent,
%{actor_id: actor_id, event_id: event_id, token: token},
_resolution
)
when not is_nil(token) do
with {:anonymous_participation_enabled, true} <-
{:anonymous_participation_enabled, Config.anonymous_participation?()},
{:anonymous_actor_id, true} <-
{:anonymous_actor_id, to_string(Config.anonymous_actor_id()) == actor_id},
{:has_event, {:ok, %Event{} = event}} <-
{:has_event, Mobilizon.Events.get_event_with_preload(event_id)},
%Actor{} = actor <- Actors.get_actor_with_preload(actor_id),
{:ok, _activity, %Participant{id: participant_id} = _participant} <-
Participations.leave(event, actor, %{local: false, cancellation_token: token}) do
{:ok, %{event: %{id: event_id}, actor: %{id: actor_id}, id: participant_id}}
else
{:has_event, _} ->
{:error, "Event with this ID #{inspect(event_id)} doesn't exist"}
{:is_owned, nil} ->
{:error, "Actor id is not owned by authenticated user"}
{:only_organizer, true} ->
{:error, "You can't leave event because you're the only event creator participant"}
{:error, :participant_not_found} ->
{:error, "Participant not found"}
end
end
def actor_leave_event(
_parent,
%{actor_id: actor_id, event_id: event_id},
%{context: %{current_user: user}}
) do
with {:is_owned, %Actor{} = actor} <- User.owns_actor(user, actor_id),
{:has_event, {:ok, %Event{} = event}} <-
{:has_event, Events.get_event_with_preload(event_id)},
{:ok, _activity, _participant} <- Participations.leave(event, actor) do
{:ok, %{event: %{id: event_id}, actor: %{id: actor_id}}}
else
{:has_event, _} ->
{:error, "Event with this ID #{inspect(event_id)} doesn't exist"}
{:is_owned, nil} ->
{:error, "Actor id is not owned by authenticated user"}
{:only_organizer, true} ->
{:error, "You can't leave event because you're the only event creator participant"}
{:error, :participant_not_found} ->
{:error, "Participant not found"}
end
end
def actor_leave_event(_parent, _args, _resolution) do
{:error, "You need to be logged-in to leave an event"}
end
def update_participation(
_parent,
%{id: participation_id, moderator_actor_id: moderator_actor_id, role: new_role},
%{
context: %{
current_user: user
}
}
) do
# Check that moderator provided is rightly authenticated
with {:is_owned, moderator_actor} <- User.owns_actor(user, moderator_actor_id),
# Check that participation already exists
{:has_participation, %Participant{role: old_role} = participation} <-
{:has_participation, Events.get_participant(participation_id)},
{:same_role, false} <- {:same_role, new_role == old_role},
# Check that moderator has right
{:actor_approve_permission, true} <-
{:actor_approve_permission,
Events.moderator_for_event?(participation.event.id, moderator_actor_id)},
{:ok, _activity, participation} <-
Participations.update(participation, moderator_actor, new_role) do
{:ok, participation}
else
{:is_owned, nil} ->
{:error, "Moderator Actor ID is not owned by authenticated user"}
{:has_participation, nil} ->
{:error, "Participant not found"}
{:actor_approve_permission, _} ->
{:error, "Provided moderator actor ID doesn't have permission on this event"}
{:same_role, true} ->
{:error, "Participant already has role #{new_role}"}
{:error, :participant_not_found} ->
{:error, "Participant not found"}
end
end
@spec confirm_participation_from_token(map(), map(), map()) ::
{:ok, Participant.t()} | {:error, String.t()}
def confirm_participation_from_token(
_parent,
%{confirmation_token: confirmation_token},
_context
) do
with {:has_participant,
%Participant{actor: actor, role: :not_confirmed, event: event} = participant} <-
{:has_participant, Events.get_participant_by_confirmation_token(confirmation_token)},
default_role <- Events.get_default_participant_role(event),
{:ok, _activity, %Participant{} = participant} <-
Participations.update(participant, actor, default_role) do
{:ok, participant}
else
{:has_participant, _} ->
{:error, "This token is invalid"}
end
end
@spec valid_email?(String.t() | nil) :: boolean
defp valid_email?(email) when is_nil(email), do: false
defp valid_email?(email) when is_bitstring(email) do
email
|> String.trim()
|> Checker.valid?()
end
end