module BrDanfe
  module DanfeLib
    class Xprod
      def initialize(det)
        @det = det
      end

      def render
        xprod = "#{@det.css('prod/xProd').text}"

        xprod += infAdProd if has_infAdProd?
        xprod += fci if fci?
        xprod += st if st?
        xprod += fcp if fcp?

        xprod
      end

      private

      def infAdProd
        "\n#{@det.css('infAdProd').text}"
      end

      def has_infAdProd?
        !@det.css("infAdProd").text.empty?
      end

      def fci
        "\n#{I18n.t('danfe.det.prod.xProdFCI',
          nFCI: @det.css('prod/nFCI').text)}"
      end

      def fci?
        !@det.css('prod/nFCI').text.empty?
      end

      def st
        "\n#{I18n.t('danfe.det.prod.xProdST',
          pMVAST: Helper.numerify(@det.css('ICMS/*/pMVAST').text),
          pICMSST: Helper.numerify(@det.css('ICMS/*/pICMSST').text),
          vBCST: Helper.numerify(@det.css('ICMS/*/vBCST').text),
          vICMSST: Helper.numerify(@det.css('ICMS/*/vICMSST').text))}"
      end

      def st?
        @det.css("ICMS/*/vBCST").text.to_i > 0
      end

      def fcp
        "\n#{I18n.t('danfe.det.prod.xProdFCP',
          vFCP: Helper.numerify(@det.css('ICMS00/vFCP').text),
          pFCP: Helper.numerify(@det.css('ICMS00/pFCP').text))}"
      end

      def fcp?
        @det.css("ICMS00/vFCP").text.to_i > 0
      end
    end
  end
end