require 'rubygems'
require 'rack'

module Jangle
  class App
  
    # The router should respond to route(service_request)
    attr_accessor :router
    
    # Splits the request path into a format (the suffix, e.g. .xml)
    # and the remaining path (which becomes part of the connector request);
    # the format specifies the content type for the response;
    # the connector request fetches JSON from the connector.
    def call(env)
      start_time = Time.now
      
      http_request = Rack::Request.new(env)
      LOGGER.debug "Request to be served by Jangle: " + http_request.inspect
      
      # Find the endpoint via the router;
      # NB this resets the http request's path, as some may have been
      # gobbled during routing
      http_request.path_info, endpoint = self.router.route(http_request)
#      LOGGER.debug "Using this endpoint to serve request: " + endpoint.inspect

      # Get a response from the endpoint
      rack_response = endpoint.serve(http_request)
      LOGGER.debug "Response returned by Jangle: " + rack_response.inspect

      end_time = Time.now
      time_taken = end_time - start_time
      LOGGER.info "Request took #{time_taken} seconds to serve"
      
      # Return as standard HTTP response
      rack_response.finish
    end
  
  end
end