lokalebasen/rconomic

require 'economic/proxies/entity_proxy'

module Economic
  class EntryProxy < EntityProxy
    def find_by_date_interval(from_date, to_date)
      response = request('FindByDateInterval', {
        'fromDate' => from_date,
        'toDate'   => to_date
      })

      build_array(response)
    end

    # Undocumented tip: if you only care about the min_number, pass in the maximum
    # possible value as max_number so you don't have to call `get_last_used_serial_number`:
    #
    #   max_number = 2**31 - 1  # Maximum int32.
    #
    def find_by_serial_number_interval(min_number, max_number)
      response = request('FindBySerialNumberInterval', {
        'minNumber' => min_number,
        'maxNumber' => max_number
      })

      build_array(response)
    end

    def get_last_used_serial_number
      response = request('GetLastUsedSerialNumber')
      response.to_i
    end

    def find(serial_number)
      response = request('GetData', {
        'entityHandle' => {
          'SerialNumber' => serial_number
         }
      })

      build(response)
    end

    private

    def build_array(response)
      # The response[:entry_handle] format may be any of
      #   [{:serial_number=>"1"}, {:serial_number=>"2"}]  # Many results.
      #   {:serial_number=>"1"}                           # One result.
      #   nil                                             # No results.
      entry_handles = [ response[:entry_handle] ].flatten.compact

      entry_handles.map do |entry_handle|
        entry_handle[:serial_number].to_i
      end
    end
  end
end