mperham--sidekiq/lib/sidekiq/web.rb

# frozen_string_literal: true
require 'erb'

require 'sidekiq'
require 'sidekiq/api'
require 'sidekiq/paginator'
require 'sidekiq/web/helpers'

require 'sidekiq/web/router'
require 'sidekiq/web/action'
require 'sidekiq/web/application'

require 'rack/protection'

require 'rack/builder'
require 'rack/file'
require 'rack/session/cookie'

module Sidekiq
  class Web
    ROOT = File.expand_path("#{File.dirname(__FILE__)}/../../web")
    VIEWS = "#{ROOT}/views".freeze
    LOCALES = ["#{ROOT}/locales".freeze]
    LAYOUT = "#{VIEWS}/layout.erb".freeze
    ASSETS = "#{ROOT}/assets".freeze

    DEFAULT_TABS = {
      "Dashboard" => '',
      "Busy"      => 'busy',
      "Queues"    => 'queues',
      "Retries"   => 'retries',
      "Scheduled" => 'scheduled',
      "Dead"      => 'morgue',
    }

    class << self
      def settings
        self
      end

      def middlewares
        @middlewares ||= []
      end

      def use(*middleware_args, &block)
        middlewares << [middleware_args, block]
      end

      def default_tabs
        DEFAULT_TABS
      end

      def custom_tabs
        @custom_tabs ||= {}
      end
      alias_method :tabs, :custom_tabs

      def locales
        @locales ||= LOCALES
      end

      def views
        @views ||= VIEWS
      end

      def session_secret=(secret)
        @session_secret = secret
      end

      attr_accessor :app_url, :session_secret, :redis_pool
      attr_writer :locales, :views
    end

    def settings
      self.class.settings
    end

    def initialize
      unless secret = Web.session_secret
        require 'securerandom'
        secret = SecureRandom.hex(64)
      end

      klass = self.class

      @app = ::Rack::Builder.new do
        %w(stylesheets javascripts images).each do |asset_dir|
          map "/#{asset_dir}" do
            run ::Rack::File.new("#{ASSETS}/#{asset_dir}")
          end
        end

        use ::Rack::Session::Cookie, secret: secret
        use ::Rack::Protection, use: :authenticity_token unless ENV['RACK_ENV'] == 'test'

        Web.middlewares.each {|middleware, block| use *middleware, &block }

        run WebApplication.new(klass)
      end
    end

    def call(env)
      @app.call(env)
    end

    def self.call(env)
      @app ||= new
      @app.call(env)
    end

    def self.register(extension)
      extension.registered(WebApplication)
    end
  end

  Sidekiq::WebApplication.helpers WebHelpers
  Sidekiq::WebApplication.helpers Sidekiq::Paginator

  Sidekiq::WebAction.class_eval "def _render\n#{ERB.new(File.read(Web::LAYOUT)).src}\nend"
end

if defined?(::ActionDispatch::Request::Session) &&
    !::ActionDispatch::Request::Session.respond_to?(:each)
  # mperham/sidekiq#2460
  # Rack apps can't reuse the Rails session store without
  # this monkeypatch
  class ActionDispatch::Request::Session
    def each(&block)
      hash = self.to_hash
      hash.each(&block)
    end
  end
end