#!/usr/bin/env ruby
require 'rubygems'
require 'awesomer'

def meminfo(key)
  `cat /proc/meminfo | grep #{key}`[/\d+/].to_i / 1024
end

def load
  `uptime`[/e: (\d\.\d\d),/, 1]
end

def volume(mixer)
  `amixer get #{mixer}`.scan(/\[(\d+)%\]/)
end

def battery
  `acpi`[/\d{1,3}%/]
end

Awesomer.contact do |a|
  MEM_TOTAL = meminfo :MemTotal

  a.statusbar = :status

  loop do
    a.widget_tell :battery, :text, "[#{battery}]"
    a.widget_tell :memory, :text,
                  "[#{MEM_TOTAL-meminfo(:MemFree)}/#{MEM_TOTAL}MB"
    a.widget_tell :load, :text, "#{load}]"
    a.widget_tell :volume, :text, "[#{volume(:PCM).join('/')}%]"
    a.widget_tell :clock, :text, Time.now.strftime('[%Y-%m-%d %H:%M]')
    sleep 1
  end
end