Fix removing allowed domains being done synchronously (#14302)

* Fix removing allowed domains being done synchronously

* Add tests

app/services/after_unallow_domain_service.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AfterUnallowDomainService < BaseService
+  def call(domain)
+    Account.where(domain: domain).find_each do |account|
+      SuspendAccountService.new.call(account, reserve_username: false)
+    end
+  end
+end

app/services/unallow_domain_service.rb

@@ -12,8 +12,7 @@ class UnallowDomainService < BaseService
   private
 
   def suspend_accounts!(domain)
-    Account.where(domain: domain).find_each do |account|
-      SuspendAccountService.new.call(account, reserve_username: false)
-    end
+    Account.where(domain: domain).in_batches.update_all(suspended_at: Time.now.utc)
+    AfterUnallowDomainWorker.perform_async(domain)
   end
 end

app/workers/after_unallow_domain_worker.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AfterUnallowDomainWorker
+  include Sidekiq::Worker
+
+  def perform(domain)
+    AfterUnallowDomainService.new.call(domain)
+  end
+end

spec/services/unallow_domain_service_spec.rb

@@ -0,0 +1,64 @@
+require 'rails_helper'
+
+RSpec.describe UnallowDomainService, type: :service do
+  let!(:bad_account) { Fabricate(:account, username: 'badguy666', domain: 'evil.org') }
+  let!(:bad_status1) { Fabricate(:status, account: bad_account, text: 'You suck') }
+  let!(:bad_status2) { Fabricate(:status, account: bad_account, text: 'Hahaha') }
+  let!(:bad_attachment) { Fabricate(:media_attachment, account: bad_account, status: bad_status2, file: attachment_fixture('attachment.jpg')) }
+  let!(:already_banned_account) { Fabricate(:account, username: 'badguy', domain: 'evil.org', suspended: true, silenced: true) }
+  let!(:domain_allow) { Fabricate(:domain_allow, domain: 'evil.org') }
+
+  subject { UnallowDomainService.new }
+
+  context 'in limited federation mode' do
+    before do
+      allow(subject).to receive(:whitelist_mode?).and_return(true)
+    end
+
+    describe '#call' do
+      before do
+        subject.call(domain_allow)
+      end
+
+      it 'removes the allowed domain' do
+        expect(DomainAllow.allowed?('evil.org')).to be false
+      end
+
+      it 'removes remote accounts from that domain' do
+        expect(Account.where(domain: 'evil.org').exists?).to be false
+      end
+
+      it 'removes the remote accounts\'s statuses and media attachments' do
+        expect { bad_status1.reload }.to raise_exception ActiveRecord::RecordNotFound
+        expect { bad_status2.reload }.to raise_exception ActiveRecord::RecordNotFound
+        expect { bad_attachment.reload }.to raise_exception ActiveRecord::RecordNotFound
+      end
+    end
+  end
+
+  context 'without limited federation mode' do
+    before do
+      allow(subject).to receive(:whitelist_mode?).and_return(false)
+    end
+
+    describe '#call' do
+      before do
+        subject.call(domain_allow)
+      end
+
+      it 'removes the allowed domain' do
+        expect(DomainAllow.allowed?('evil.org')).to be false
+      end
+
+      it 'does not remove accounts from that domain' do
+        expect(Account.where(domain: 'evil.org').exists?).to be true
+      end
+
+      it 'removes the remote accounts\'s statuses and media attachments' do
+        expect { bad_status1.reload }.to_not raise_exception ActiveRecord::RecordNotFound
+        expect { bad_status2.reload }.to_not raise_exception ActiveRecord::RecordNotFound
+        expect { bad_attachment.reload }.to_not raise_exception ActiveRecord::RecordNotFound
+      end
+    end
+  end
+end