1 files changed, 23 insertions, 0 deletions
diff --git a/app/controllers/concerns/spammable_actions/captcha_check/common.rb b/app/controllers/concerns/spammable_actions/captcha_check/common.rb
new file mode 100644
index 00000000000..7c047e02a1d
--- /dev/null
+++ b/app/controllers/concerns/spammable_actions/captcha_check/common.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module SpammableActions::CaptchaCheck
+  module Common
+    extend ActiveSupport::Concern
+
+    private
+
+    def with_captcha_check_common(captcha_render_lambda:, &block)
+      # If the Spammable indicates that CAPTCHA is not necessary (either due to it not being flagged
+      # as spam, or if spam/captcha is disabled for some reason), then we will go ahead and
+      # yield to the block containing the action's original behavior, then return.
+      return yield unless spammable.render_recaptcha?
+
+      # If we got here, we need to render the CAPTCHA instead of yielding to action's original
+      # behavior. We will present a CAPTCHA to be solved by executing the lambda which was passed
+      # as the `captcha_render_lambda:` argument. This lambda contains either the HTML-specific or
+      # JSON-specific behavior to cause the CAPTCHA modal to be rendered.
+      Gitlab::Recaptcha.load_configurations!
+      captcha_render_lambda.call
+    end
+  end
+end