Convert Swagger2 to OpenApi3

openapi_converter.rb

require 'restclient'

class OpenapiConverter
  CONVERTER_URL = "https://converter.swagger.io/api/convert"
  CONVERTED_FILE_PATH = File.join(Rails.root, "/public/api/docs")
  CONVERTED_FILENAME = "swagger-spec-v3.json"
  LOGGER = Rails.logger

  attr_accessor :url
  
  def self.convert(url)
    new(url).convert
  end

  def self.convert_and_write_to_public(url)
    converted_api = convert(url)
    full_filename = "#{CONVERTED_FILE_PATH}/#{CONVERTED_FILENAME}"
    File.write(full_filename, converted_api)
  end

  def initialize(url)
    @url = url
  end

  def convert
    full_url = "#{CONVERTER_URL}?url=#{CGI.escape(url)}"
    RestClient.get(full_url).body
  end

end