Add: #87 フォロワーのみに購読を許可する設定 (#239)

* Wip: マイグレーション、設定など一式

* Fix test

* Fix test

* Fix: マスター用の設定を他サーバーに送信しないよう修正

* DTL、外部サーバーの情報受け入れのテストを追加

* スペルミスを修正

* Web画面に設定項目追加

* 既存の`master_settings`を上書きしないよう修正

app/lib/account_statuses_filter.rb

@@ -44,7 +44,7 @@ class AccountStatusesFilter
   private
 
   def initial_scope
-    if (suspended? || (domain_block&.reject_send_dissubscribable && @account.dissubscribable)) || domain_block&.reject_send_media || blocked?
+    if (suspended? || (domain_block&.reject_send_dissubscribable && !@account.all_subscribable?)) || domain_block&.reject_send_media || blocked?
       Status.none
     elsif anonymous?
       account.statuses.where(visibility: %i(public unlisted public_unlisted))

app/lib/activitypub/tag_manager.rb

@@ -236,7 +236,14 @@ class ActivityPub::TagManager
   end
 
   def subscribable_by(account)
-    account.dissubscribable ? [] : [COLLECTIONS[:public]]
+    case account.subscription_policy
+    when :allow
+      [COLLECTIONS[:public]]
+    when :followers_only
+      [account_followers_url(account)]
+    else
+      []
+    end
   end
 
   def searchable_by(status)

app/lib/status_reach_finder.rb

@@ -195,7 +195,7 @@ class StatusReachFinder
       blocks = DomainBlock.where(domain: nil)
       blocks = blocks.or(DomainBlock.where(reject_send_not_public_searchability: true)) if status.compute_searchability != 'public'
       blocks = blocks.or(DomainBlock.where(reject_send_public_unlisted: true)) if status.public_unlisted_visibility?
-      blocks = blocks.or(DomainBlock.where(reject_send_dissubscribable: true)) if status.account.dissubscribable
+      blocks = blocks.or(DomainBlock.where(reject_send_dissubscribable: true)) unless status.account.all_subscribable?
       blocks = blocks.or(DomainBlock.where(reject_send_media: true)) if status.with_media?
       blocks = blocks.or(DomainBlock.where(reject_send_sensitive: true)) if (status.with_media? && status.sensitive) || status.spoiler_text?
       blocks.pluck(:domain).uniq