#/bin/bash
set -x

if [[ "$1" = "--revert" ]]; then
  mastertop=`xinput | grep 'Virtual core pointer'| grep pointer | grep master | grep -o -P 'id=\d+' | cut -d '=' -f 2`
  devices=(`xinput | grep pointer | grep "Arduino" | grep -o -P 'id=\d+' | cut -d '=' -f 2`)
  left=${devices[0]}
  echo $left
  right=${devices[1]}
  echo $right

  if xinput | grep leftkeyboard; then
    masterleft=`xinput | grep leftkeyboard | grep pointer | grep master | grep -o -P 'id=\d+' | cut -d '=' -f 2`
    echo $masterleft
    xinput remove-master $masterleft
  fi
  if xinput | grep rightkeyboard ; then
    masterright=`xinput | grep rightkeyboard | grep pointer | grep master | grep -o -P 'id=\d+' | cut -d '=' -f 2`
    echo $masterright
    xinput remove-master $masterright
  fi
  
  xinput reattach $left $mastertop
  xinput reattach $right $mastertop
else
  if ! xinput | grep leftkeyboard; then
    xinput create-master leftkeyboard
  fi
  if ! xinput | grep rightkeyboard ; then
    xinput create-master rightkeyboard 
  fi
  devices=(`xinput | grep pointer | grep "Arduino" | grep -o -P 'id=\d+' | cut -d '=' -f 2`)
  left=${devices[0]}
  echo $left
  right=${devices[1]}
  echo $right
  masterleft=`xinput | grep leftkeyboard | grep pointer | grep master | grep -o -P 'id=\d+' | cut -d '=' -f 2`
  echo $masterleft
  masterright=`xinput | grep rightkeyboard | grep pointer | grep master | grep -o -P 'id=\d+' | cut -d '=' -f 2`
  echo $masterright
  
  xinput reattach $left $masterleft
  xinput reattach $right $masterright
fi