#!/bin/sh
#
# Copyright (c) 2026 The NetBSD Foundation, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#

#
# reference-transaction [prepared|committed|aborted]
#
#	This git hook is run by any operation that updates references.
#
#	XXX Fill me in.
#
#	On standard input, each LF-terminated line has the format:
#
#		<old-value> SP <new-value> SP <ref> LF
#
#	See the githooks(5) man page for details.
#
# WHAT THIS HOOK IMPLEMENTATION DOES
#
#	Nothing for now.  In the future, we might use this as part of a
#	three-phase commit protocol for synchronous replication of
#	pushes to a quorum of back ends, if we can find a way; see
#	https://lore.kernel.org/git/20241105013433.4E52260A64@jupiter.mumble.net/T/
#	for some discussion.
#

DEBUG=$(git config --type bool --default false netbsd.debug)
if $DEBUG; then
	echo BEGIN reference-transaction $$ "$@"
	trap 'echo END reference-transaction $$ "$@"' EXIT HUP INT TERM
fi

set -Ceu
if $DEBUG; then
	set -x
fi

if $DEBUG; then
	i=0
	while [ "$i" -lt "${GIT_PUSH_OPTION_COUNT:-0}" ]; do
		eval echo [reference-transaction] \
		    GIT_PUSH_OPTION_$i=\$GIT_PUSH_OPTION_$i
		i=$((i + 1))
	done
fi

if $DEBUG; then
	awk '{ print "[reference-transaction]", $0 }'
fi
