service + seerializer completed

app/serializers/rest/status_serializer.rb

 # frozen_string_literal: true
 
 class REST::StatusSerializer < ActiveModel::Serializer
- attributes :id, :created_at, :in_reply_to_id, :in_reply_to_account_id,
+ attributes :id, :created_at, :revised_at, :in_reply_to_id, :in_reply_to_account_id,
  :sensitive, :spoiler_text, :visibility, :language,
  :uri, :url, :replies_count, :reblogs_count,
  :favourites_count, :quote_of_id

app/services/edit_status_service.rb

@@ -25,9 +25,11 @@ class EditStatusService < BaseService
 
  validate_media!
  preprocess_attributes!
+ revision_text = prepare_revision_text
 
  process_status!
  postprocess_status!
+ create_revision! revision_text
 
  redis.setex(idempotency_key, 3_600, @status.id) if idempotency_given?
 
@@ -60,6 +62,25 @@ class EditStatusService < BaseService
  LinkCrawlWorker.perform_async(@status.id) unless @status.spoiler_text?
  end
 
+ def prepare_revision_text
+ text = @status.text
+ current_media_ids = @status.media_attachments.pluck(:id)
+ new_media_ids = @options[:media_ids].take(4).map(&:to_i)
+
+ if current_media_ids.sort != new_media_ids.sort
+ text = "" if text == @options[:text]
+ text += " [Media attachments changed]"
+ end
+
+ text.strip()
+ end
+
+ def create_revision!(text)
+ @status.revisions.create!({
+ text: text
+ })
+ end
+
  def validate_media!
  return if @options[:media_ids].blank? || !@options[:media_ids].is_a?(Enumerable)
 
@@ -100,6 +121,7 @@ class EditStatusService < BaseService
 
  def status_attributes
  {
+ revised_at: Time.now,
  text: @text,
  media_attachments: @media || [],
  sensitive: (@options[:sensitive].nil? ? @account.user&.setting_default_sensitive : @options[:sensitive]) || @options[:spoiler_text].present?,