#!/usr/bin/env ruby

acpi_battery = %x[ acpi -b ]

if acpi_battery.empty?
  puts "Battery not conected. Exiting."
  exit
end

$battery_status     = acpi_battery.split(' ')[2].gsub(',', '')
$battery_percentage = acpi_battery.split(' ')[3].gsub('%,', '').to_i

def notification message, urgency, icon
  command = "notify-send --urgency=#{ urgency } 'Battery at #{ $battery_percentage }%' '\n #{ message }'"

  if not icon.nil?
    command += " --icon #{ icon }"
  end

  system command
end

def wall message
  system "sudo wall 'Battery at #{ $battery_percentage }% \n #{ message }'"
end

u = 'critical'
i = '/usr/share/icons/HighContrast/scalable/emblems/emblem-important.svg'

if $battery_status == "Discharging"
  case $battery_percentage
  when 10..19
    m = "Not long left. Get the power cord."
    u = 'normal'
    i = nil

  when 6..9
    m = "Plug-in the power cord."

  when 3..5
    m = "Wrap it up!"

  when 1..2
    m = "Oh, well... guess it's important..."

  when 0
    m = "Your're own your own. Good Luck!"

  else
    m = nil

  end

  notification(m, u, i) if not m.nil?
end

if $battery_status == "Charging"
  if (80..100).include? $battery_percentage
    notification "Enough charging!", u, i
  end
end

puts "Battery at #{ $battery_percentage }%"