#!/bin/sh
#$Id$
#Copyright (c) 2014-2021 Pierre Pronchery <khorben@defora.org>
#This file is part of DeforaOS Devel scripts
#
#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 EDGEBSD PROJECT 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.



#variables
PREFIX="/usr/local"
#executables
GIT_MESSAGE="$PREFIX/libexec/deforaos-git-message"
DEFORAOS_IRC="$PREFIX/libexec/deforaos-irc"
DEFORAOS_JOBS="$PREFIX/bin/deforaos-jobs"
MKTEMP="mktemp"
RM="rm -f"
#settings
HOOKS="jobs"
IRC_CHANNEL=
IRC_SERVER=
JOBS_BRANCH_MASTER="$PREFIX/libexec/deforaos-jobs/deforaos-job-git-mirror
$PREFIX/libexec/deforaos-jobs/deforaos-job-git-doc
$PREFIX/libexec/deforaos-jobs/deforaos-job-git-tests"
PROGNAME="deforaos-git-hook"
SYSCONFDIR="$PREFIX/etc"
VENDOR="DeforaOS"
#load local settings
[ -f "$SYSCONFDIR/$VENDOR/$PROGNAME.conf" ] &&
	. "$SYSCONFDIR/$VENDOR/$PROGNAME.conf"
[ -f "$HOME/.config/$VENDOR/$PROGNAME.conf" ] &&
	. "$HOME/.config/$VENDOR/$PROGNAME.conf"


#functions
#hook_jobs
_hook_jobs()
{
	res=0

	while read oldrev newrev refname; do
		case "$refname" in
			refs/heads/master)
				_jobs_branch "${refname#refs/heads/}" \
					"$GL_REPO"		|| res=2
				;;
		esac
	done
	return $res
}

_jobs_branch()
{(
	branch="$1"
	repository="$2"
	res=0

	if [ "$branch" = "master" -a -n "$JOBS_BRANCH_MASTER" ]; then
		for job in $JOBS_BRANCH_MASTER; do
			#warn if the job is not available
			[ -x "$job" ] || _error "$job: Job not available"
			$DEFORAOS_JOBS add "$job $repository"	|| res=2
		done
	fi
	return $res
)}


#hook_irc
_hook_irc()
{
	if [ -z "$IRC_SERVER" -o -z "$IRC_CHANNEL" ]; then
		_error "IRC_SERVER and IRC_CHANNEL must be set for the IRC hook"
		return $?
	fi
	$GIT_MESSAGE "post-receive" 2>&1 | $DEFORAOS_IRC "$IRC_SERVER" "$IRC_CHANNEL"
	#ignore errors
	return 0
}


#error
_error()
{
	echo "$PROGNAME: $@" 1>&2
	return 2
}


#main
#save a copy of the output
tmpfile=$($MKTEMP)
[ $? -eq 0 ]							|| exit 2
while read line; do
	echo "$line" >> "$tmpfile"
done
#chain the hooks
ret=0
[ -n "$HOOKS" ] && for hook in $HOOKS; do
	"_hook_$hook" < "$tmpfile"				|| ret=2
done
#clean up
$RM -- "$tmpfile"						|| exit 2

exit $ret