class Formatador

def progressbar(current, total, options)
  color = options[:color]
  started_at = options[:started_at]
  width = options[:width]
  output = []
  if options[:label]
    output << options[:label]
  end
  # width
  # we are going to write a string that looks like "   current/total"
  # It would be nice if it were left padded with spaces in such a way that
  # it puts the progress bar in a constant place on the page. This witdh
  # calculation allows for the "current" string to be up to two characters
  # longer than the "total" string without problems. eg- current =
  # 9.99, total = 10
  padding = total.to_s.size * 2 + 3
  output << "[#{color}]%#{padding}s[/]" % "#{current}/#{total}"
  percent = current.to_f / total.to_f
  percent = 0 if percent < 0
  percent = 1 if percent > 1
  done = '*' * (percent * width).ceil
  remaining = ' ' * (width - done.length)
  output << "[_white_]|[/][#{color}][_#{color}_]#{done}[/]#{remaining}[_white_]|[/]"
  if started_at
    elapsed = Time.now - started_at
    minutes = (elapsed / 60).truncate.to_s
    seconds = (elapsed % 60).truncate.to_s
    output << "#{minutes}:#{'0' if seconds.size < 2}#{seconds}"
  end
  output << ''
  output.join('  ')
end