Change auto-following admin-selected accounts, show in recommendations (#16078)

1 files changed, 19 insertions, 5 deletions

diff --git a/app/validators/existing_username_validator.rb b/app/validators/existing_username_validator.rb
index 723302ec9..afbe0c635 100644
--- a/app/validators/existing_username_validator.rb
+++ b/app/validators/existing_username_validator.rb
@@ -4,11 +4,25 @@ class ExistingUsernameValidator < ActiveModel::EachValidator
   def validate_each(record, attribute, value)
     return if value.blank?
 
-    if options[:multiple]
-      missing_usernames = value.split(',').map { |username| username.strip.gsub(/\A@/, '') }.filter_map { |username| username unless Account.find_local(username) }
-      record.errors.add(attribute, I18n.t('existing_username_validator.not_found_multiple', usernames: missing_usernames.join(', '))) if missing_usernames.any?
-    else
-      record.errors.add(attribute, I18n.t('existing_username_validator.not_found')) unless Account.find_local(value.strip.gsub(/\A@/, ''))
+    usernames_and_domains = begin
+      value.split(',').map do |str|
+        username, domain = str.strip.gsub(/\A@/, '').split('@')
+        domain = nil if TagManager.instance.local_domain?(domain)
+
+        next if username.blank?
+
+        [str, username, domain]
+      end.compact
+    end
+
+    usernames_with_no_accounts = usernames_and_domains.filter_map do |(str, username, domain)|
+      str unless Account.find_remote(username, domain)
+    end
+
+    if usernames_with_no_accounts.any? && options[:multiple]
+      record.errors.add(attribute, I18n.t('existing_username_validator.not_found_multiple', usernames: usernames_with_no_accounts.join(', ')))
+    elsif usernames_with_no_accounts.any? || usernames_and_domains.size > 1
+      record.errors.add(attribute, I18n.t('existing_username_validator.not_found'))
     end
   end
 end