dovadi/mt940

module MT940
  class Triodos < Base
    private

    def parse_tag_86
      return unless @line.match(/^:86:000(.*)$/)

      processed_description = hashify_description(Regexp.last_match(1))
      @transaction.contra_account = if sepa?(processed_description)
                                      processed_description['21']
                                    else
                                      processed_description['10'][/[^0+]\d*/]
                                    end
      @transaction.description = extract_description(processed_description)
    end

    def bic_code?(text)
      BIC_CODES.values.include?(text)
    end

    def extract_description(text)
      identifier = sepa?(text) ? 22 : 20
      description = ''
      text.each do |k, v|
        description += v if k.to_i >= identifier && k.to_i < 30
      end
      description
    end

    def hashify_description(description)
      hash = {}
      description.split('>').compact.each do |slice|
        next if slice.empty?

        hash[slice[0..1]] = slice[2..-1]
      end
      hash
    end

    def sepa?(text)
      text['10'] == '0000000000'
    end
  end
end