105 lines
2.9 KiB
Elixir
105 lines
2.9 KiB
Elixir
defmodule Mobilizon.Service.ActivityPub.Converter.Comment do
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@moduledoc """
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Comment converter.
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This module allows to convert events from ActivityStream format to our own
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internal one, and back.
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"""
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alias Mobilizon.Actors.Actor
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alias Mobilizon.Events.Comment, as: CommentModel
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alias Mobilizon.Events.Event
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alias Mobilizon.Service.ActivityPub
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alias Mobilizon.Service.ActivityPub.{Converter, Convertible}
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require Logger
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@behaviour Converter
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defimpl Convertible, for: CommentModel do
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alias Mobilizon.Service.ActivityPub.Converter.Comment, as: CommentConverter
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defdelegate model_to_as(comment), to: CommentConverter
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end
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@doc """
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Converts an AP object data to our internal data structure.
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"""
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@impl Converter
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@spec as_to_model_data(map) :: map
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def as_to_model_data(object) do
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{:ok, %Actor{id: actor_id}} = ActivityPub.get_or_fetch_by_url(object["actor"])
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Logger.debug("Inserting full comment")
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Logger.debug(inspect(object))
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data = %{
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"text" => object["content"],
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"url" => object["id"],
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"actor_id" => actor_id,
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"in_reply_to_comment_id" => nil,
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"event_id" => nil,
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"uuid" => object["uuid"]
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}
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# We fetch the parent object
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Logger.debug("We're fetching the parent object")
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data =
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if Map.has_key?(object, "inReplyTo") && object["inReplyTo"] != nil &&
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object["inReplyTo"] != "" do
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Logger.debug(fn -> "Object has inReplyTo #{object["inReplyTo"]}" end)
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case ActivityPub.fetch_object_from_url(object["inReplyTo"]) do
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# Reply to an event (Event)
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{:ok, %Event{id: id}} ->
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Logger.debug("Parent object is an event")
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data |> Map.put("event_id", id)
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# Reply to a comment (Comment)
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{:ok, %CommentModel{id: id} = comment} ->
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Logger.debug("Parent object is another comment")
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data
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|> Map.put("in_reply_to_comment_id", id)
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|> Map.put("origin_comment_id", comment |> CommentModel.get_thread_id())
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# Anything else is kind of a MP
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{:error, parent} ->
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Logger.debug("Parent object is something we don't handle")
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Logger.debug(inspect(parent))
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data
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end
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else
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Logger.debug("No parent object for this comment")
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data
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end
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data
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end
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@doc """
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Make an AS comment object from an existing `Comment` structure.
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"""
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@impl Converter
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@spec model_to_as(CommentModel.t()) :: map
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def model_to_as(%CommentModel{} = comment) do
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object = %{
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"type" => "Note",
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"to" => ["https://www.w3.org/ns/activitystreams#Public"],
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"content" => comment.text,
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"actor" => comment.actor.url,
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"attributedTo" => comment.actor.url,
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"uuid" => comment.uuid,
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"id" => comment.url
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}
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if comment.in_reply_to_comment do
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object |> Map.put("inReplyTo", comment.in_reply_to_comment.url || comment.event.url)
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else
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object
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end
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end
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end
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