receiptprinter.rb

require_relative './file_parser'
require_relative './file_reader'
require_relative './receipt'

class ReceiptPrinter
  attr_reader :output
  
  def initialize
    remove_existing_output
    @output = create_receipts
  end
  
  def print
    output.each_with_index do |line, index|
      File.open("output.txt", "a+"){|f| f << "Output #{counter + 1}:\n" }
      output.summary.each do |summary|
        File.open("output.txt", "a+"){|f| f << "#{summary}\n" }
      end
      File.open("output.txt", "a+"){|f| f << "Sales Taxes: #{(line.sales_tax_total).round(2)}\nTotal: #{(line.subtotal).round(2)}\n\n" }
    end
  end
  
  private
  
  def remove_existing_output
    File.delete("output.txt") if File.exists?("output.txt")
  end
  
  def create_receipts
    input = FileParser.parse_file(FileReader.read_file)
    input.map { |i| Receipt.new(i) }
  end
end

r = ReceiptPrinter.new
r.print