#!/bin/sh
# preinst script for wims-modules
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <new-preinst> `install'
#        * <new-preinst> `install' <old-version>
#        * <new-preinst> `upgrade' <old-version>
#        * <old-preinst> `abort-upgrade' <new-version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package


case "$1" in
    install|upgrade)
	# removes symlinks which have been installed in former versions
	# to begin with an experimental German localisation, which will
	# no more be maintained with the same method. See the obsoleted
	# patch file debian/patches/20po.patch
	if [ "no$2" != "no" ]; then
	    oldVersion=$2
	    if dpkg --compare-versions $oldVersion "<=" 3.65+svn20090927-1; then
		for f in $(find /var/lib/wims/public_html/modules/ -name "*.de"); do
		    if [ -L $f ]; then rm $f; fi
		done
	    fi
	fi
	# remove old mathjax dir which have been installed in former versions
	# and is now replaced by Debian's package node-mathjax-full
	if [ "no$2" != "no" ]; then
	    oldVersion=$2
	    if dpkg --compare-versions $oldVersion "<=" 2:4.27a~dfsg1-1; then
	       d="/var/lib/wims/public_html/scripts/js/mathjax"
	       if [ -d $d ]; then rm -rf $d; fi
	    fi
	fi
    ;;

    abort-upgrade)
    ;;

    *)
        echo "preinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.



exit 0