rails--rails/actionmailer/lib/action_mailer/railtie.rb

# frozen_string_literal: true

require "active_job/railtie"
require "action_mailer"
require "rails"
require "abstract_controller/railties/routes_helpers"

module ActionMailer
  class Railtie < Rails::Railtie # :nodoc:
    config.action_mailer = ActiveSupport::OrderedOptions.new
    config.eager_load_namespaces << ActionMailer

    initializer "action_mailer.logger" do
      ActiveSupport.on_load(:action_mailer) { self.logger ||= Rails.logger }
    end

    initializer "action_mailer.set_configs" do |app|
      paths   = app.config.paths
      options = app.config.action_mailer

      if app.config.force_ssl
        options.default_url_options ||= {}
        options.default_url_options[:protocol] ||= "https"
      end

      options.assets_dir      ||= paths["public"].first
      options.javascripts_dir ||= paths["public/javascripts"].first
      options.stylesheets_dir ||= paths["public/stylesheets"].first
      options.show_previews = Rails.env.development? if options.show_previews.nil?
      options.cache_store ||= Rails.cache

      if options.show_previews
        options.preview_path ||= defined?(Rails.root) ? "#{Rails.root}/test/mailers/previews" : nil
      end

      # make sure readers methods get compiled
      options.asset_host          ||= app.config.asset_host
      options.relative_url_root   ||= app.config.relative_url_root

      ActiveSupport.on_load(:action_mailer) do
        include AbstractController::UrlFor
        extend ::AbstractController::Railties::RoutesHelpers.with(app.routes, false)
        include app.routes.mounted_helpers

        register_interceptors(options.delete(:interceptors))
        register_preview_interceptors(options.delete(:preview_interceptors))
        register_observers(options.delete(:observers))

        options.each { |k, v| send("#{k}=", v) }
      end

      ActiveSupport.on_load(:action_dispatch_integration_test) { include ActionMailer::TestCase::ClearTestDeliveries }
    end

    initializer "action_mailer.compile_config_methods" do
      ActiveSupport.on_load(:action_mailer) do
        config.compile_methods! if config.respond_to?(:compile_methods!)
      end
    end

    initializer "action_mailer.eager_load_actions" do
      ActiveSupport.on_load(:after_initialize) do
        ActionMailer::Base.descendants.each(&:action_methods) if config.eager_load
      end
    end

    config.after_initialize do |app|
      options = app.config.action_mailer

      if options.show_previews
        app.routes.prepend do
          get "/rails/mailers"         => "rails/mailers#index", internal: true
          get "/rails/mailers/*path"   => "rails/mailers#preview", internal: true
        end

        if options.preview_path
          ActiveSupport::Dependencies.autoload_paths << options.preview_path
        end
      end
    end
  end
end