defmodule MobilizonWeb.Resolvers.Event do @moduledoc """ Handles the event-related GraphQL calls """ alias Mobilizon.Actors.Actor alias Mobilizon.Addresses alias Mobilizon.Addresses.Address alias Mobilizon.Events alias Mobilizon.Events.{Activity, Event, Participant} alias Mobilizon.Media.Picture alias Mobilizon.Users.User alias MobilizonWeb.Resolvers.Person # We limit the max number of events that can be retrieved @event_max_limit 100 @number_of_related_events 3 def list_events(_parent, %{page: page, limit: limit}, _resolution) when limit < @event_max_limit do {:ok, Mobilizon.Events.list_events(page, limit)} end def list_events(_parent, %{page: _page, limit: _limit}, _resolution) do {:error, :events_max_limit_reached} end def find_event(_parent, %{uuid: uuid}, _resolution) do case Mobilizon.Events.get_public_event_by_uuid_with_preload(uuid) do nil -> {:error, "Event with UUID #{uuid} not found"} event -> {:ok, Map.put(event, :organizer_actor, Person.proxify_pictures(event.organizer_actor))} end end @doc """ List participant for event (separate request) """ def list_participants_for_event(_parent, %{uuid: uuid, page: page, limit: limit}, _resolution) do {:ok, Mobilizon.Events.list_participants_for_event(uuid, page, limit)} end @doc """ List participants for event (through an event request) """ def list_participants_for_event(%Event{uuid: uuid}, _args, _resolution) do {:ok, Mobilizon.Events.list_participants_for_event(uuid, 1, 10)} end @doc """ List related events """ def list_related_events( %Event{tags: tags, organizer_actor: organizer_actor, uuid: uuid}, _args, _resolution ) do # We get the organizer's next public event events = [Events.get_upcoming_public_event_for_actor(organizer_actor, uuid)] |> Enum.filter(&is_map/1) # We find similar events with the same tags # uniq_by : It's possible event_from_same_actor is inside events_from_tags events = events |> Enum.concat(Events.list_events_by_tags(tags, @number_of_related_events)) |> uniq_events() # TODO: We should use tag_relations to find more appropriate events # We've considered all recommended events, so we fetch the latest events events = if @number_of_related_events - length(events) > 0 do events |> Enum.concat( Events.list_events(1, @number_of_related_events, :begins_on, :asc, true, true) ) |> uniq_events() else events end events = events # We remove the same event from the results |> Enum.filter(fn event -> event.uuid != uuid end) # We return only @number_of_related_events right now |> Enum.take(@number_of_related_events) {:ok, events} end defp uniq_events(events), do: Enum.uniq_by(events, fn event -> event.uuid end) @doc """ Join an event for an actor """ def actor_join_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, Mobilizon.Events.get_event_with_preload(event_id)}, {:error, :participant_not_found} <- Mobilizon.Events.get_participant(event_id, actor_id), {:ok, _activity, participant} <- MobilizonWeb.API.Participations.join(event, actor), participant <- participant |> Map.put(:event, event) |> Map.put(:actor, Person.proxify_pictures(actor)) do {:ok, participant} 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"} {:error, :event_not_found} -> {:error, "Event id not found"} {:ok, %Participant{}} -> {:error, "You are already a participant of this event"} end end def actor_join_event(_parent, _args, _resolution) do {:error, "You need to be logged-in to join an event"} end @doc """ Leave an event for an actor """ 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, Mobilizon.Events.get_event_with_preload(event_id)}, {:ok, _activity, _participant} <- MobilizonWeb.API.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 @doc """ Create an event """ def create_event( _parent, %{organizer_actor_id: organizer_actor_id} = args, %{context: %{current_user: user}} = _resolution ) do # See https://github.com/absinthe-graphql/absinthe/issues/490 with args <- Map.put(args, :options, args[:options] || %{}), {:is_owned, %Actor{} = organizer_actor} <- User.owns_actor(user, organizer_actor_id), {:ok, args} <- save_attached_picture(args), {:ok, args} <- save_physical_address(args), args_with_organizer <- Map.put(args, :organizer_actor, organizer_actor), {:ok, %Activity{data: %{"object" => %{"type" => "Event"} = _object}}, %Event{} = event} <- MobilizonWeb.API.Events.create_event(args_with_organizer) do {:ok, event} else {:is_owned, nil} -> {:error, "Organizer actor id is not owned by the user"} end end def create_event(_parent, _args, _resolution) do {:error, "You need to be logged-in to create events"} end @doc """ Update an event """ def update_event( _parent, %{event_id: event_id} = args, %{context: %{current_user: user}} = _resolution ) do # See https://github.com/absinthe-graphql/absinthe/issues/490 with args <- Map.put(args, :options, args[:options] || %{}), {:ok, %Event{} = event} <- Mobilizon.Events.get_event_with_preload(event_id), {:is_owned, %Actor{} = organizer_actor} <- User.owns_actor(user, event.organizer_actor_id), {:ok, args} <- save_attached_picture(args), {:ok, args} <- save_physical_address(args), args <- Map.put(args, :organizer_actor, organizer_actor), {:ok, %Activity{data: %{"object" => %{"type" => "Event"} = _object}}, %Event{} = event} <- MobilizonWeb.API.Events.update_event(args, event) do {:ok, event} else {:error, :event_not_found} -> {:error, "Event not found"} {:is_owned, nil} -> {:error, "User doesn't own actor"} end end def update_event(_parent, _args, _resolution) do {:error, "You need to be logged-in to update an event"} end # If we have an attached picture, just transmit it. It will be handled by # Mobilizon.Service.ActivityPub.Utils.make_picture_data/1 # However, we need to pass it's actor ID @spec save_attached_picture(map()) :: {:ok, map()} defp save_attached_picture( %{picture: %{picture: %{file: %Plug.Upload{} = _picture} = all_pic}} = args ) do {:ok, Map.put(args, :picture, Map.put(all_pic, :actor_id, args.organizer_actor_id))} end # Otherwise if we use a previously uploaded picture we need to fetch it from database @spec save_attached_picture(map()) :: {:ok, map()} defp save_attached_picture(%{picture: %{picture_id: picture_id}} = args) do with %Picture{} = picture <- Mobilizon.Media.get_picture(picture_id) do {:ok, Map.put(args, :picture, picture)} end end @spec save_attached_picture(map()) :: {:ok, map()} defp save_attached_picture(args), do: {:ok, args} @spec save_physical_address(map()) :: {:ok, map()} defp save_physical_address(%{physical_address: %{url: physical_address_url}} = args) when not is_nil(physical_address_url) do with %Address{} = address <- Addresses.get_address_by_url(physical_address_url), args <- Map.put(args, :physical_address, address.url) do {:ok, args} end end @spec save_physical_address(map()) :: {:ok, map()} defp save_physical_address(%{physical_address: address} = args) do with {:ok, %Address{} = address} <- Addresses.create_address(address), args <- Map.put(args, :physical_address, address.url) do {:ok, args} end end @spec save_physical_address(map()) :: {:ok, map()} defp save_physical_address(args), do: {:ok, args} @doc """ Delete an event """ def delete_event( _parent, %{event_id: event_id, actor_id: actor_id}, %{context: %{current_user: user}} ) do with {:ok, %Event{} = event} <- Mobilizon.Events.get_event(event_id), {:is_owned, %Actor{}} <- User.owns_actor(user, actor_id), {:event_can_be_managed, true} <- Event.can_be_managed_by(event, actor_id), event <- Mobilizon.Events.delete_event!(event) do {:ok, %{id: event.id}} else {:error, :event_not_found} -> {:error, "Event not found"} {:is_owned, nil} -> {:error, "Actor id is not owned by authenticated user"} {:event_can_be_managed, false} -> {:error, "You cannot delete this event"} end end def delete_event(_parent, _args, _resolution) do {:error, "You need to be logged-in to delete an event"} end end