#! /bin/sh

set -e

killtree() {
   local _pid=$1
   local _sig=${2:--KILL}
   for _child in $(ps -o pid --no-headers --ppid ${_pid}); do
      killtree ${_child} ${_sig}
   done

   kill -9 ${_pid}
}

# Get LIVE_USERNAME
. /etc/live/config.d/username.conf

# Get LANG
. /etc/default/locale

export LANG
export DISPLAY=':0.0'
export XAUTHORITY="`echo /var/run/gdm3/auth-for-${LIVE_USERNAME}-*/database`"

LOCKFILE=/var/lock/yokai-launcher.lock

# Run only when the interface is not "lo":
if [ "${1}" = "lo" ]; then
   exit 0
fi

if [ "${2}" = "up" ]; then
	(
	sudo -u ${LIVE_USERNAME} lckdo $LOCKFILE yokai-launcher -DISPLAY=${DISPLAY}
	) &
elif [ "${2}" = "down" ]; then
   for i in $(seq 10); do
      PPID=`pgrep "^yokai-launcher$"`
      killtree $PPID
      sleep 1
      if ! pgrep "^yokai-launcher$"; then
         break
      fi
   done
fi