forked from potsda.mn/mobilizon
71 lines
2.1 KiB
Elixir
71 lines
2.1 KiB
Elixir
defmodule Mobilizon.Federation.ActivityStream.Converter.Post do
|
|
@moduledoc """
|
|
Post converter.
|
|
|
|
This module allows to convert posts from ActivityStream format to our own
|
|
internal one, and back.
|
|
"""
|
|
alias Mobilizon.Actors.Actor
|
|
alias Mobilizon.Federation.ActivityPub
|
|
alias Mobilizon.Federation.ActivityPub.Utils
|
|
alias Mobilizon.Federation.ActivityStream.{Converter, Convertible}
|
|
alias Mobilizon.Posts.Post
|
|
require Logger
|
|
|
|
@behaviour Converter
|
|
|
|
defimpl Convertible, for: Post do
|
|
alias Mobilizon.Federation.ActivityStream.Converter.Post, as: PostConverter
|
|
|
|
defdelegate model_to_as(post), to: PostConverter
|
|
end
|
|
|
|
@doc """
|
|
Convert an post struct to an ActivityStream representation
|
|
"""
|
|
@impl Converter
|
|
@spec model_to_as(Post.t()) :: map
|
|
def model_to_as(
|
|
%Post{author: %Actor{url: actor_url}, attributed_to: %Actor{url: creator_url}} = post
|
|
) do
|
|
%{
|
|
"type" => "Article",
|
|
"actor" => actor_url,
|
|
"id" => post.url,
|
|
"name" => post.title,
|
|
"content" => post.body,
|
|
"attributedTo" => creator_url,
|
|
"published" => post.publish_at || post.inserted_at
|
|
}
|
|
end
|
|
|
|
@doc """
|
|
Converts an AP object data to our internal data structure.
|
|
"""
|
|
@impl Converter
|
|
@spec as_to_model_data(map) :: {:ok, map} | {:error, any()}
|
|
def as_to_model_data(
|
|
%{"type" => "Article", "actor" => creator, "attributedTo" => group} = object
|
|
) do
|
|
with {:ok, %Actor{id: attributed_to_id}} <- get_actor(group),
|
|
{:ok, %Actor{id: author_id}} <- get_actor(creator) do
|
|
%{
|
|
title: object["name"],
|
|
body: object["content"],
|
|
url: object["id"],
|
|
attributed_to_id: attributed_to_id,
|
|
author_id: author_id,
|
|
local: false,
|
|
publish_at: object["published"]
|
|
}
|
|
else
|
|
{:error, err} -> {:error, err}
|
|
err -> {:error, err}
|
|
end
|
|
end
|
|
|
|
@spec get_actor(String.t() | map() | nil) :: {:ok, Actor.t()} | {:error, String.t()}
|
|
defp get_actor(nil), do: {:error, "nil property found for actor data"}
|
|
defp get_actor(actor), do: actor |> Utils.get_url() |> ActivityPub.get_or_fetch_actor_by_url()
|
|
end
|