module Zebra
  class PrintJob

    attr_reader :printer

    def initialize(printer)
      @printer = printer
    end

    def print(label, ip, print_service: "")
      @remote_ip = ip
      if label.is_a? String
        tempfile = Tempfile.new "zebra_label"
        tempfile.write label
        tempfile.close
      else
        tempfile = label.persist
      end
      send_to_printer(tempfile.path, print_service)
    end

    private

    def send_to_printer(path, print_service)
      puts "* * * * * * * * * * * * Sending file to printer #{@printer} at #{@remote_ip} * * * * * * * * * * "
      case print_service
      when "rlpr"
        system("rlpr -H #{@remote_ip} -P #{@printer} -o #{path} 2>&1") # try printing to LPD on windows machine 
      when "lp"
        system("lp -h #{@remote_ip} -d #{@printer} -o raw #{path}") # print to unix (CUPS) using lp
      else 
        result = system("rlpr -H #{@remote_ip} -P #{@printer} -o #{path} 2>&1") # try printing to LPD on windows machine first
        system("lp -h #{@remote_ip} -d #{@printer} -o raw #{path}") if !result # print to unix (CUPS) if rlpr failed
      end
    end
  end
end