#!/bin/sh
#$Id$
#Copyright (c) 2022 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
CONFIGURE="configure -O NetBSD"
GIT="git"
GIT_CLONE="$GIT clone -q"
GIT_SUBMODULE="$GIT submodule -q"
MAKE="make"
MKTEMP="mktemp"
RM="/bin/rm -f"
RSYNC="rsync -a"
TR="tr"
#settings
GIT_TAG=
GIT_REMOTE=
MAKE_TARGET="dist"
MIRROR="ftp:incoming"
PROGNAME="deforaos-job-git-tag-release"
SYSCONFDIR="$PREFIX/etc"
#load local settings
[ -f "$SYSCONFDIR/DeforaOS/$PROGNAME.conf" ] &&
	. "$SYSCONFDIR/DeforaOS/$PROGNAME.conf"
[ -f "$HOME/.config/DeforaOS/$PROGNAME.conf" ] &&
	. "$HOME/.config/DeforaOS/$PROGNAME.conf"


#functions
#git_tag_release
_git_tag_release()
{
	ret=0
	repository="$1"
	tag="$2"

	#create a temporary directory
	tmpdir=$($MKTEMP -d)
	if [ $? -ne 0 ]; then
		return 2
	fi
	#clone the repository
	$GIT_CLONE --single-branch -b "$tag" \
		"$GIT_REMOTE${repository}.git" "$tmpdir/repository"
	if [ $? -ne 0 ]; then
		echo "$repository: Could not clone" 1>&2
	else
		_tag_release_do "$repository" "$tag"
	fi
	#cleanup
	$RM -r "$tmpdir"
	return $ret
}

_tag_release_do()
{
	repository="$1"
	tag="$2"
	filename="$(echo "$tag" | $TR "_-" "-.").tar.gz"

	#update submodules if any
	if [ -f "$tmpdir/repository/.gitmodules" ]; then
		(cd "$tmpdir/repository" &&
			$GIT_SUBMODULE init &&
			$GIT_SUBMODULE update)
		[ $? -eq 0 ] || return 2
	fi
	#generate Makefiles if relevant
	if [ -f "$tmpdir/repository/project.conf" ]; then
		(cd "$tmpdir/repository" && $CONFIGURE)
	elif [ -x "$tmpdir/repository/autogen.sh" ]; then
		(cd "$tmpdir/repository" && ./autogen.sh)
	elif [ -x "$tmpdir/repository/configure" ]; then
		(cd "$tmpdir/repository" && ./configure)
	fi
	#generate the archive
	if [ $? -ne 0 -o ! -f "$tmpdir/repository/Makefile" ]; then
		_error "Unable to generate the archive"
		return $?
	fi
	(cd "$tmpdir/repository" && $MAKE "$MAKE_TARGET")
	if [ $? -ne 0 ]; then
		_error "Could not generate the archive"
		return $?
	fi
	#locate the archive
	if [ ! -f "$tmpdir/repository/$filename" ]; then
		_error "Could not locate the archive"
		return $?
	fi
	#upload the archive
	$RSYNC "$tmpdir/repository/$filename" "$MIRROR"
	if [ $? -ne 0 ]; then
		_error "Could not upload the archive"
		return $?
	fi
}


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


#usage
_usage()
{
	echo "Usage: $PROGNAME repository tag" 1>&2
	return 1
}


#main
while getopts "O:" name; do
	case "$name" in
		O)
			export "${OPTARG%%=*}"="${OPTARG#*=}"
			;;
		*)
			_usage
			exit $?
			;;
	esac
done
shift $((OPTIND - 1))
if [ $# -ne 2 ]; then
	_usage
	exit $?
fi
_git_tag_release "$1" "$2"