require_relative '../soaspec'

# This represents a request / response pair
class Exchange

  attr_reader :api_class
  # How many times to retry for a success
  attr_accessor :retry_count

  # Set retry for success variable to true so that request will be retried
  # for retry_count until it's true
  def retry_for_success
    @retry_for_success = true
    self
  end

  # @return [Bool] Whether to keep making request until success code reached
  def retry_for_success?
    @retry_for_success
  end

  # @param [Symbol, String] name Name shown in RSpec run
  # @param [Hash] override_parameters Parameters to override for default params
  def initialize(name, override_parameters = {})
    @test_name = name.to_s
    @api_class = Soaspec.api_handler
    @override_parameters = override_parameters
    @retry_for_success = false
    self.retry_count = 3
  end

  # Make request to handler with parameters defined
  # Will retry until success code reached if retry_for_success? is set
  # @return [Response] Response from Api handler
  def make_request
    Soaspec::SpecLogger.add_to 'Example ' + @test_name
    retry_count.times do
      response = @api_class.make_request(@override_parameters)
      return response unless retry_for_success?
      return response if @api_class.status_code_for(response) == 200
      response
    end
  end

  # Name describing this class when used with `RSpec.describe`
  # This will make the request and store the response
  # @return [String] Name given when initializing
  def to_s
    @test_name
  end

  # Returns response object from Api. Will make the request if not made and then cache it for later on
  # For example for SOAP it will be a Savon response
  # response.body (body of response as Hash)
  # response.header (head of response as Hash)
  def response
    @response ||= make_request
  end

  # Get status code from api class. This is http response for Web Api
  # @return [Integer] Status code from api class
  def status_code
    @api_class.status_code_for(response)
  end

  # Dummy request used to make a request without verifying it and ignoring WSDL errors
  # @return [Boolean] Always returns true. Unless of course an unexpected exception occurs
  def dummy_request
    make_request
    true
  rescue Savon::HTTPError
    puts 'Resolver error'
    # This seems to occur first time IP address asks for WSDL
    true
  end

  # Extract value from path api class
  # @param [Object] path Path to return element for api class E.g - for SOAP this is XPath string. For JSON, this is Hash dig Array
  # @return [String] Value at path
  def [](path)
    @api_class.value_from_path(self, path)
  end

end