Contents

module Wicoris
  module Postman
    class FaxMachine
      DIALOUT_PREFIX = '0'
      VALID_PHONE_NUMBER = %r{
        ^0       # starts with a zero
        [1-9]{1} # but not with a second zero
        \d{8,}$  # followed by at least 8 digits
      }x

      def initialize(job, opts = {})
        @job = job
        @opts = opts
        @logger = opts[:logger]
      end

      # Actually fax the letter.
      def run
        system(command) unless @opts[:noop]
        if @logger
          msg = @job.to_hash
          msg[:message] = 'Letter delivered :-)'
          @logger.info(msg)
        end
      end

      # @returns [String] Validated phone number.
      def validated_phone
        raise ArgumentError, 'Missing phone number' unless @job.phone
        phone = @job.phone.gsub(/(\s|-)+/, '')
        if phone =~ VALID_PHONE_NUMBER
          DIALOUT_PREFIX + phone
        else
          raise ArgumentError, "Invalid phone number: #{phone}"
        end
      end

      private

      # Return the command-line for sending the fax, i.e.:
      #
      #   lp -d Fax -o phone=042 "/tmp/foo.pdf"
      #
      # @returns [String] command-line
      def command
        cmd = %w(lp -d Fax) # TODO: Replace hard-coded fax printer-name 'Fax'!
        cmd << "-o phone=#{validated_phone}"
        cmd << "'#{@job.letter}'"
        cmd.join(' ')
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
wicoris-postman-0.10.0	lib/wicoris/postman/fax_machine.rb