#!/bin/bash

ACTION="$1"
DEPENDS="libgl1-mesa-glx"

shift
PACKAGE_LIST=$@

case $ACTION in

	preInstall)
		for ix in $DEPENDS
		do
			apt-get install -y $ix
			TEST=$( dpkg-query -s $ix 2> /dev/null| grep Status | cut -d " " -f 4 )
			if [ "$TEST" != 'installed' ];then
				exit 1
			fi
		done
	;;

	remove)
		for ix in $PACKAGE_LIST
		do
			apt-get remove -y $ix
			TEST=$( dpkg-query -s $ix 2> /dev/null| grep Status | cut -d " " -f 4 )
			if [ "$TEST" == 'installed' ];then
				exit 1
			fi
		done
	;;
esac
exit 0