mobilizon/lib/service/export/common.ex

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defmodule Mobilizon.Service.Export.Common do
@moduledoc """
Common tools for exportation
"""
alias Mobilizon.{Actors, Events, Posts, Users}
alias Mobilizon.Actors.Actor
alias Mobilizon.Events.{Event, FeedToken}
alias Mobilizon.Storage.Page
alias Mobilizon.Users.User
@spec fetch_actor_event_feed(String.t(), integer()) :: String.t()
def fetch_actor_event_feed(name, limit) do
with %Actor{} = actor <- Actors.get_actor_by_name(name),
{:visibility, true} <- {:visibility, Actor.is_public_visibility?(actor)},
%Page{elements: events} <- Events.list_public_events_for_actor(actor, 1, limit),
%Page{elements: posts} <- Posts.get_public_posts_for_group(actor, 1, limit) do
{:ok, actor, events, posts}
else
err ->
{:error, err}
end
end
# Only events, not posts
@spec fetch_events_from_token(String.t(), integer()) :: String.t()
def fetch_events_from_token(token, limit) do
with {:ok, uuid} <- ShortUUID.decode(token),
{:ok, _uuid} <- Ecto.UUID.cast(uuid),
%FeedToken{actor: actor, user: %User{} = user} <- Events.get_feed_token(uuid) do
case actor do
%Actor{} = actor ->
%{
type: :actor,
actor: actor,
events: fetch_actor_private_events(actor, limit),
user: user,
token: token
}
nil ->
with actors <- Users.get_actors_for_user(user),
events <-
actors
|> Enum.map(&fetch_actor_private_events(&1, limit))
|> Enum.concat() do
%{type: :user, events: events, user: user, token: token, actor: nil}
end
end
end
end
@spec fetch_instance_public_content(integer()) :: {:ok, list(Event.t()), list(Post.t())}
def fetch_instance_public_content(limit) do
with %Page{elements: events} <- Events.list_public_local_events(1, limit),
%Page{elements: posts} <- Posts.list_public_local_posts(1, limit) do
{:ok, events, posts}
end
end
@spec fetch_actor_private_events(Actor.t(), integer()) :: list(Event.t())
def fetch_actor_private_events(%Actor{} = actor, limit) do
actor |> fetch_identity_participations(limit) |> participations_to_events()
end
@spec fetch_identity_participations(Actor.t(), integer()) :: Page.t()
defp fetch_identity_participations(%Actor{} = actor, limit) do
with %Page{} = page <- Events.list_event_participations_for_actor(actor, 1, limit) do
page
end
end
defp participations_to_events(%Page{elements: participations}) do
participations
|> Enum.map(& &1.event_id)
|> Enum.map(&Events.get_event_with_preload!/1)
end
end