module RaspbergSerial

# File lib/raspberg_serial.rb, line 16
def generate(name)
  sum = name.each_byte.sum
  serial = sum * MULTIPLIER
  suffix = vb_str_suffix(serial)
  "#{serial}#{suffix}"
end

# File lib/raspberg_serial.rb, line 9
def generate_result(name)
  text = name.to_s
  return { error: "Name cannot be empty." } if text.strip.empty?

  { serial: generate(text) }
end

# File lib/raspberg_serial.rb, line 27
def vb_str_suffix(serial)
  str = " #{serial}"
  str[2, 2].to_s
end

# File lib/raspberg_serial.rb, line 23
def verify(name, serial_text)
  generate(name) == serial_text.to_s.strip
end