vendor_booker.rb

class VendorBooker

  # This class is responsible for calling the appropriate translation mechanism to convert a CRM Trip
  # into the appropriate format to book 
  #
  # It also translates the response into a CRM Booking object to persist to the database
  
  def initialize(trip, vendor, credentials)
    @trip = trip
    @vendor = vendor
    @credentials = credentials
  end

  def book!
    booking_response_translator.new(customer.book!(vendor_booking, @credentials)).translate
  end

  private

  def customer
    Kernel.module_eval("#{vendor}Customer").new(@trip.customer)
  end

  def vendor_booking
    Kernel.const_get("#{vendor}Booking").new(@trip).booking
  end

  def booking_response_translator
    Kernel.const_get("#{vendor}BookingResponse")
  end

  def vendor
    @vendor.to_s.camelize
  end

end