#!/bin/sh

# Command line
refname="$1"
oldrev="$2"
newrev="$3"

# We only care about branches moving--ignore tags/etc.
case "$refname" in
	refs/heads/*)
		short_refname=${refname##refs/heads/}
		;;
	*)
		exit 0
		;;
esac


excused=" $(git config hooks.update-ensure-ticket-reference.excused) "
if [[ $excused =~ " $short_refname " ]] ; then
	exit 0
fi

if expr "$oldrev" : '0*$' >/dev/null ; then
	git rev-parse --not --branches | git rev-list --stdin --no-merges $newrev
else
	git rev-parse --not --branches | git rev-list --stdin --no-merges $oldrev..$newrev
fi | while read commit ; do
	# Have log dump the "subject line, new line, body" of each commit message for grepping
	git log -n 1 '--pretty=format:%s%n%b' "$commit" | grep -i '\(\(re\|refs\|qa\) #[0-9]\+\)\|\(no ticket\)' > /dev/null
	if [ $? -ne 0 ] ; then
		echo "----------------------------------------------------" >&2
		echo "" >&2
		echo "Commit $commit does not reference a ticket" >&2
		echo "" >&2
		echo "----------------------------------------------------" >&2
		exit 1
	fi
done