module AFMotion
  module HTTPBuilder
    def self.included(base)
      AFMotion::HTTP_METHODS.each do |method|
        base.send(:define_singleton_method, method, -> (request_or_url, parameters = {}, &callback) do
          request = request_or_url
          if !request.is_a?(NSURLRequest)
            request = NSMutableURLRequest.requestWithURL(request_or_url.to_url)
            request.HTTPMethod = method.upcase
            if [:get, :head].member? method.downcase.to_sym
              request.HTTPShouldUsePipelining = true
            end
            # SEE NSURLRequest_params.rb
            request.parameters = parameters.merge(__encoding__: self.parameter_encoding)
          end

          operation = (self.request_module.for_request(request) do |result|
            callback.call(result)
          end)

          operation.start
          operation
        end)
      end
    end
  end

  module HTTP
    include AFMotion::HTTPBuilder

    module_function
    def request_module
      AFMotion::Operation::HTTP
    end

    def parameter_encoding
      AFFormURLParameterEncoding
    end
  end

  module JSON
    include AFMotion::HTTPBuilder

    module_function
    def request_module
      AFMotion::Operation::JSON
    end

    def parameter_encoding
      AFJSONParameterEncoding
    end
  end

  module XML
    include AFMotion::HTTPBuilder

    module_function
    def request_module
      AFMotion::Operation::XML
    end

    def parameter_encoding
      AFFormURLParameterEncoding
    end
  end

  module PLIST
    include AFMotion::HTTPBuilder

    module_function
    def request_module
      AFMotion::Operation::PLIST
    end

    def parameter_encoding
      AFPropertyListParameterEncoding
    end
  end
end