redshiftbrightness.sh

#!/bin/bash

input="$1"
#either 1 or -1, must be int

current=$(ps -ef | grep 'redshift \-b' | tail -c 4)
number="${current//.}"
#convert 1.0 to 10 etc


new=$((number + input))

if (( $new > 10 ))
then
  echo "Redshift: Max brightness reached"
  new=10
fi

if (( $new < 1 ))
then
  echo "Redshift: Min brightness reached"
  new=1
fi


displayval=$((new * 10))

newnum=$(echo "scale=1; $new/10" | bc)
#convert 10 to 1.0 etc


killall redshift
redshift -b "${newnum}" &


if [ ! -e /tmp/rsnotifid ]
then
  echo "Redshift brightness: creating temp file"
  touch /tmp/rsnotifid
  echo 0 > /tmp/rsnotifid
fi

replaceid=$(cat /tmp/rsnotifid)

replaceidnew=$(gdbus call --session --dest org.freedesktop.Notifications --object-path /org/freedesktop/Notifications --method org.freedesktop.Notifications.Notify appname ${replaceid} display-brightness-symbolic "" "" [] "{'String':<0>,'value':<${displayval}>}" 2000 | cut -c 9- | egrep -o '[0-9]+')
#regex="([0-9]+),"
#replaceidnew=$(gdbus call --session --dest org.freedesktop.Notifications --object-path /org/freedesktop/Notifications --method org.freedesktop.Notifications.Notify appname ${replaceid} display-brightness-symbolic "" "" [] "{'String':<0>,'value':<${displayval}>}" 2000 | egrep -o $regex)

echo $replaceidnew > /tmp/rsnotifid