module ReactOnRails
  def self.configure
    yield(configuration)
  end

  DEFAULT_GENERATED_ASSETS_DIRS = [
    %w(app assets webpack)
  ].map { |dirs| File.join(*dirs) }.freeze

  def self.configuration
    @configuration ||= Configuration.new(
      generated_assets_dirs: DEFAULT_GENERATED_ASSETS_DIRS,
      server_bundle_js_file: "",
      prerender: false,
      replay_console: true,
      logging_on_server: true,
      raise_on_prerender_error: false,
      trace: Rails.env.development?,
      development_mode: Rails.env.development?,
      server_renderer_pool_size: 1,
      server_renderer_timeout: 20,
      skip_display_none: false)
  end

  class Configuration
    attr_accessor :server_bundle_js_file, :prerender, :replay_console,
                  :trace, :development_mode,
                  :logging_on_server, :server_renderer_pool_size,
                  :server_renderer_timeout, :raise_on_prerender_error,
                  :skip_display_none, :generated_assets_dirs

    def initialize(server_bundle_js_file: nil, prerender: nil, replay_console: nil,
                   trace: nil, development_mode: nil,
                   logging_on_server: nil, server_renderer_pool_size: nil,
                   server_renderer_timeout: nil, raise_on_prerender_error: nil,
                   skip_display_none: nil, generated_assets_dirs: DEFAULT_GENERATED_ASSETS_DIRS)
      self.server_bundle_js_file = if File.exist?(server_bundle_js_file)
                                     server_bundle_js_file
                                   end

      self.generated_assets_dirs = generated_assets_dirs
      self.prerender = prerender
      self.replay_console = replay_console
      self.logging_on_server = logging_on_server
      self.development_mode = if development_mode.nil?
                                Rails.env.development?
                              else
                                development_mode
                              end
      self.trace = trace.nil? ? Rails.env.development? : trace
      self.raise_on_prerender_error = raise_on_prerender_error
      self.skip_display_none = skip_display_none

      # Server rendering:
      self.server_renderer_pool_size = self.development_mode ? 1 : server_renderer_pool_size
      self.server_renderer_timeout = server_renderer_timeout # seconds
    end
  end
end