app/controllers/concerns/google_analytics_csp.rb


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# frozen_string_literal: true

module GoogleAnalyticsCSP
  extend ActiveSupport::Concern

  included do
    content_security_policy do |policy|
      next unless helpers.google_tag_manager_enabled? || policy.directives.present?

      default_script_src = policy.directives['script-src'] || policy.directives['default-src']
      script_src_values = Array.wrap(default_script_src) | ['*.googletagmanager.com']
      policy.script_src(*script_src_values)

      default_img_src = policy.directives['img-src'] || policy.directives['default-src']
      img_src_values = Array.wrap(default_img_src) | ['*.google-analytics.com', '*.googletagmanager.com']
      policy.img_src(*img_src_values)

      default_connect_src = policy.directives['connect-src'] || policy.directives['default-src']
      connect_src_values =
        Array.wrap(default_connect_src) | ['*.google-analytics.com', '*.analytics.google.com', '*.googletagmanager.com']
      policy.connect_src(*connect_src_values)
    end
  end
end