Gab Social. All are welcome.

app/validators/status_length_validator.rb

@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+class StatusLengthValidator < ActiveModel::Validator
+  MAX_CHARS = 3000
+
+  def validate(status)
+    return unless status.local? && !status.reblog?
+
+    @status = status
+    status.errors.add(:text, I18n.t('statuses.over_character_limit', max: MAX_CHARS)) if too_long?
+  end
+
+  private
+
+  def too_long?
+    countable_length > MAX_CHARS
+  end
+
+  def countable_length
+    total_text.mb_chars.grapheme_length
+  end
+
+  def total_text
+    [@status.spoiler_text, countable_text].join
+  end
+
+  def countable_text
+    return '' if @status.text.nil?
+
+    @status.text.dup.tap do |new_text|
+      new_text.gsub!(FetchLinkCardService::URL_PATTERN, 'x' * 23)
+      new_text.gsub!(Account::MENTION_RE, '@\2')
+    end
+  end
+end