#!/bin/sh
#
# This script tries to upgrade spamfilter.conf from an old
# version that uses 'posix' spamfilters to a bit more recent
# version with examples using 'regex' spamfilters.
# This so fewer users end up with a headache when upgrading
# to UnrealIRCd 4.2.3+.
#

if [ -f spamfilter.conf.patch ]; then
	F="`pwd`/spamfilter.conf.patch"
elif [ -f extras/patches/spamfilter.conf.patch ]; then
	F="`pwd`/extras/patches/spamfilter.conf.patch"
else
	echo "WARNING: spamfilter.conf.patch not found"
	exit 0
fi

if [ ! -f "$F" ]; then
	echo "WARNING: spamfilter.conf.patch not found in round two"
	exit 0
fi

if [ "$1" = "" ]; then
	echo "ERROR: No target confdir specified."
	exit 0
fi

if [ ! -f "$1/spamfilter.conf" ]; then
	echo "WARNING: no spamfilter.conf found in $1 -- strange"
	exit 0
fi

cd "$1" || exit 1
cat "$F"|patch -p0 --dry-run -N 1>/dev/null 2>&1
if [ "$?" = 0 ]; then
	# Patch succeeded, patch now!
	echo "Upgrading examples in your spamfilter.conf..."
	cat "$F"|patch -p0 -N
fi