require 'active_support/configurable'

module Gris
  class Application
    include ActiveSupport::Configurable
    config_accessor :use_health_middleware

    def initialize
      Gris::Deprecations.initialization_checks
      @filenames = ['', '.html', 'index.html', '/index.html']
    end

    def self.instance(config = {})
      @instance ||= Rack::Builder.new do
        use Gris::Middleware::Health unless config[:use_health_middleware] == false
        use Rack::Cors do
          allow do
            origins '*'
            resource '*', headers: :any, methods: :get
          end
        end
        run Gris::Application.new
      end.to_app
    end

    def call(env)
      response = ApplicationEndpoint.call(env)
      # Render error pages or return API response
      case response[0]
      when 404, 500
        body = { code: response[0], message: response[2] }.to_json
        [response[0], response[1], body]
      else
        response
      end
    end
  end
end