Add backend support for local_only on status create

Based off ThibG implementation on glitch #502

app/controllers/api/v1/statuses_controller.rb

@@ -52,7 +52,8 @@ class Api::V1::StatusesController < Api::BaseController
                                          spoiler_text: status_params[:spoiler_text],
                                          visibility: status_params[:visibility],
                                          application: doorkeeper_token.application,
-                                         idempotency: request.headers['Idempotency-Key'])
+                                         idempotency: request.headers['Idempotency-Key'],
+                                         local_only: status_params[:local_only])
 
     render json: @status, serializer: REST::StatusSerializer
   end
@@ -77,7 +78,7 @@ class Api::V1::StatusesController < Api::BaseController
   end
 
   def status_params
-    params.permit(:status, :in_reply_to_id, :sensitive, :spoiler_text, :visibility, media_ids: [])
+    params.permit(:status, :in_reply_to_id, :sensitive, :spoiler_text, :visibility, :local_only, media_ids: [])
   end
 
   def pagination_params(core_params)

app/models/status.rb

@@ -130,6 +130,10 @@ class Status < ApplicationRecord
     attributes['local'] || uri.nil?
   end
 
+  def local_only?
+    local_only
+  end
+
   def reblog?
     !reblog_of_id.nil?
   end
@@ -222,6 +226,8 @@ class Status < ApplicationRecord
 
   around_create Mastodon::Snowflake::Callbacks
 
+  before_create :set_locality
+
   before_validation :prepare_contents, if: :local?
   before_validation :set_reblog
   before_validation :set_visibility
@@ -445,6 +451,10 @@ class Status < ApplicationRecord
     self.local = account.local?
   end
 
+  def set_locality
+    self.local_only = reblog.local_only if reblog?
+  end
+
   def update_statistics
     return unless public_visibility? || unlisted_visibility?
     ActivityTracker.increment('activity:statuses:local')

app/serializers/rest/status_serializer.rb

@@ -4,7 +4,7 @@ class REST::StatusSerializer < ActiveModel::Serializer
   attributes :id, :created_at, :in_reply_to_id, :in_reply_to_account_id,
              :sensitive, :spoiler_text, :visibility, :language,
              :uri, :content, :url, :replies_count, :reblogs_count,
-             :favourites_count
+             :favourites_count, :local_only
 
   attribute :favourited, if: :current_user?
   attribute :reblogged, if: :current_user?

app/services/post_status_service.rb

@@ -31,7 +31,8 @@ class PostStatusService < BaseService
                                         spoiler_text: options[:spoiler_text] || '',
                                         visibility: options[:visibility] || account.user&.setting_default_privacy,
                                         language: language_from_option(options[:language]) || account.user&.setting_default_language&.presence || LanguageDetector.instance.detect(text, account),
-                                        application: options[:application])
+                                        application: options[:application],
+                                        local_only: local_only_option(options[:local_only], in_reply_to))
     end
 
     process_hashtags_service.call(status)
@@ -57,6 +58,11 @@ class PostStatusService < BaseService
 
   private
 
+  def local_only_option(local_only, in_reply_to)
+    return in_reply_to&.local_only? if local_only.nil? # XXX temporary, just until clients implement to avoid leaking local_only posts
+    local_only
+  end
+
   def validate_media!(media_ids)
     return if media_ids.blank? || !media_ids.is_a?(Enumerable)