class BatteryGrowl

# File lib/battery_growl/battery_growl.rb, line 5
def initialize
end

# File lib/battery_growl/battery_growl.rb, line 8
def run(percent=10,host='localhost')
  num_check(percent)
  battery_usage = check_battery
  subject = 'バッテリー容量低下'
  message = "残り#{battery_usage}%です。充電してください。"
  post_growl(subject,message,host) if battery_usage <= percent
  return true
rescue => e
  raise "#{e}"
end

# File lib/battery_growl/battery_growl.rb, line 27
def check_battery
  cmd = "pmset -g batt|grep 'InternalBattery'|awk '{print $2}'|cut -d'%' -f1"
  usage = `#{cmd}`.to_i
  return usage
rescue => e
  raise "#{e}"
end

# File lib/battery_growl/battery_growl.rb, line 21
def num_check(num)
  raise 'Parameter is less than 1.' if num < 1
  raise 'Parameter is greater than 100.' if num > 100
  return true
end

# File lib/battery_growl/battery_growl.rb, line 35
def post_growl(subject,message,host)
  g = Growl.new host, "ruby-growl"
  g.add_notification("notification", "ruby-growl Notification")
  g.notify "notification", subject, message
  return true
rescue => e
  raise "#{e}"
end