mobilizon/lib/service/activity_pub/converters/event.ex

71 lines
2.0 KiB
Elixir

defmodule Mobilizon.Service.ActivityPub.Converters.Event do
@moduledoc """
Event converter
This module allows to convert events from ActivityStream format to our own internal one, and back
"""
alias Mobilizon.Actors
alias Mobilizon.Media
alias Mobilizon.Media.Picture
alias Mobilizon.Actors.Actor
alias Mobilizon.Events.Event, as: EventModel
alias Mobilizon.Service.ActivityPub.Converter
@behaviour Converter
@doc """
Converts an AP object data to our internal data structure
"""
@impl Converter
@spec as_to_model_data(map()) :: map()
def as_to_model_data(object) do
with {:ok, %Actor{id: actor_id}} <- Actors.get_actor_by_url(object["actor"]) do
picture_id =
with true <- Map.has_key?(object, "attachment"),
%Picture{id: picture_id} <-
Media.get_picture_by_url(
object["attachment"]
|> hd
|> Map.get("url")
|> hd
|> Map.get("href")
) do
picture_id
else
_ -> nil
end
%{
"title" => object["name"],
"description" => object["content"],
"organizer_actor_id" => actor_id,
"picture_id" => picture_id,
"begins_on" => object["begins_on"],
"category" => object["category"],
"url" => object["id"],
"uuid" => object["uuid"]
}
end
end
@doc """
Convert an event struct to an ActivityStream representation
"""
@impl Converter
@spec model_to_as(EventModel.t()) :: map()
def model_to_as(%EventModel{} = event) do
%{
"type" => "Event",
"to" => ["https://www.w3.org/ns/activitystreams#Public"],
"title" => event.title,
"actor" => event.organizer_actor.url,
"uuid" => event.uuid,
"category" => event.category,
"summary" => event.description,
"publish_at" => (event.publish_at || event.inserted_at) |> DateTime.to_iso8601(),
"updated_at" => event.updated_at |> DateTime.to_iso8601(),
"id" => event.url
}
end
end