#!/bin/sh

######################### USAGE #########################
# rename the plugin/script to include parameters for the
# minimum uptime before trying to enforce sleeping below
# the battery level and the battery level to sleep below
# use the format -<NUMBER>up-<NUMBER>perc
#
# example: sleepAt-10up-10perc.5m.sh
#
# means that BitBar will run the script every 5 minutes
# and the script will check whether the computer
# has been up for at least 10 minutes
# and only if it's been up for at least 10 minutes
# it will check whether the battery percentage
# is higher than 10%
#########################################################

function showUsageLink {

  echo show usage'|'bash='"'"$0"'"' param1="usage"

}

echo 'sleep at'
echo ---

usage="$1"

if [[ $usage == "usage" ]]; then

  echo Usage:
  echo ''
  echo rename the plugin/script to include parameters for the
  echo minimum uptime before trying to enforce sleeping below
  echo the battery level and the battery level to sleep below
  echo use the format -\<NUMBER\>up-\<NUMBER\>perc
  echo ''
  echo example: sleepAt-10up-10perc.5m.sh
  echo ''
  echo means that BitBar will run the script every 5 minutes
  echo and the script will check whether the computer
  echo has been up for at least 10 minutes
  echo and only if it\'s been up for at least 10 minutes
  echo it will check whether the battery percentage
  echo is higher than 10%

  exit
fi

# check whether we're currently charging or on battery
powersource=$(pmset -g ps | head -n 1 | awk '{print $4 " " $5}')

# don't sleep when you're charging, or calculate anything
if [[ $powersource == "'AC Power'" ]]; then
  echo Charging
  showUsageLink
  exit
fi

# all of the 'parameters' in the script name (and the interval)
base=$(basename "$0" | sed -e 's|^[a-zA-Z]*||')

# strip off the startup parameter (###up)
startup=$(echo "${base}" | sed -e 's|-\([0-9]*\)up.*|\1|g')
if [[ $startup == $base ]]; then
  startup=20
else
  base=$(echo "${base}" | sed -e 's|-[0-9]*up\(.*\)|\1|g')
fi

# strip off the safe percentage parameter (###perc)
safeperc=$(echo "${base}" | sed -e 's|-\([0-9]*\)perc.*|\1|g')
if [[ $safeperc == $base ]]; then
  safeperc=5
else
  base=$(echo "${base}" | sed -e 's|-[0-9]*perc\(.*\)|\1|g')
fi

# when we're not charging, show the parameters used by the script
echo 'minimum uptime: ' $startup
echo 'safe percentage: ' $safeperc

# echo $base

timeup=$(uptime)
upvalue=$(echo ${timeup} | awk '{print $3}')
upincr=$(echo ${timeup} | awk '{print $4}')

# don't sleep when we're just starting up ... chances are we're trying to charge
# and the cord's been knocked out
if [[ $upincr == "mins," ]]; then
  if [ $upvalue -lt $startup ]; then
    echo Only up for $upincr mins...
    showUsageLink
    exit
  fi
fi

current="$(system_profiler SPPowerDataType | grep "Charge Remaining" | awk '{print $4}')";
full="$(system_profiler SPPowerDataType | grep "Full Charge Capacity" | awk '{print $5}')";

percentage=$((${current}*100/${full}))
unsafe=""

if [ ${percentage} -le ${safeperc} ]; then
  unsafe=" < ${safeperc}, unsafe"
fi

echo "${percentage}%${unsafe}"

if [ ${percentage} -le ${safeperc} ]; then
  pmset sleepnow
fi

showUsageLink

# <bitbar.title>Sleep At Battery %</bitbar.title>
# <bitbar.version>v1.0</bitbar.version>
# <bitbar.author>Jonathan 'J5' Cook</bitbar.author>
# <bitbar.author.github>j5bot</bitbar.author.github>
# <bitbar.desc>Sends a sleep command to the system when the battery reaches the provided percentage.</bitbar.desc>
# <bitbar.dependencies>none</bitbar.dependencies>