#!/bin/sh
#$Id$
#Copyright (c) 2008-2020 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.



#environment
umask 022
#variables
#executables
CONFIGURE="configure"
CVS="cvs -q"
DATE="date"
FIND="find"
GIT="git"
LN="ln -f"
MAIL="mail"
MAKE="make"
MKDIR="mkdir -m 0755 -p"
MKTEMP="mktemp"
RM="rm -f"
RMDIR="rmdir"
TAR="tar"
TOUCH="touch"
XARGS="xargs"
#settings
CVSMODULE="DeforaOS"
[ -n "$CVSROOT" ] || CVSROOT=":pserver:anonymous@anoncvs.defora.org:/home/cvs"
DATE_TODAY=$($DATE '+%Y%m%d')
DESTDIR="/var/www"
DEVNULL="/dev/null"
EMAIL="devel@lists.defora.org"
[ -n "$GITROOT" ] || GITROOT="https://git.defora.org/git/DeforaOS.git"
HOMEPAGE="https://www.defora.org"
PREFIX="/usr/local"
PROGNAME="deforaos-update"
ROOT=
SRC="$HOME/$CVSMODULE"
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
#deforaos_update_cvs
_deforaos_update_cvs()
{
	[ -n "$SRC" ] || SRC="$ROOT/$CVSMODULE"

	#configure cvs if necessary
	$MKDIR -- "$HOME"					|| exit 2
	if [ ! -f "$HOME/.cvspass" ]; then
		$TOUCH "$HOME/.cvspass"				|| exit 2
	fi

	#checkout tree if necessary
	if [ ! -d "$SRC" ]; then
		$MKDIR -- "$ROOT"				|| exit 2
		echo ""
		echo "Checking out CVS module $CVSMODULE:"
		(cd "$ROOT" && $CVS "-d$CVSROOT" co "$CVSMODULE") \
								|| exit 2
	fi

	#update tree
	echo ""
	echo "Updating CVS module $CVSMODULE:"
	(cd "$SRC" && $CVS update -dPA)				|| exit 2

	#make archive
	echo ""
	echo "Archiving CVS module $CVSMODULE:"
	for i in *; do
		echo "DeforaOS-$DATE_TODAY/$i"
	done | ($LN -s . "DeforaOS-$DATE_TODAY" \
			&& $XARGS $TAR -czf "$DESTDIR/htdocs/download/snapshots/DeforaOS-daily.tar.gz")
	$RM "DeforaOS-$DATE_TODAY"
	echo "$HOMEPAGE/download/snapshots/DeforaOS-daily.tar.gz"
}


#deforaos_update_git
_deforaos_update_git()
{
	SRC="DeforaOS.git"

	#checkout tree if necessary
	if [ ! -d "$ROOT/$SRC" ]; then
		$MKDIR -- "$ROOT"				|| exit 2
		echo ""
		echo "Checking out Git repository $SRC:"
		$GIT clone "$GITROOT" "$ROOT/$SRC" > "$DEVNULL"	|| exit 2
	fi

	#update tree
	echo ""
	echo "Updating Git repository $SRC:"
	(cd "$ROOT/$SRC" && $GIT checkout -f && $GIT pull) > "$DEVNULL" \
								|| exit 2

	#re-generate makefiles
	echo ""
	echo "Re-generating the Makefiles:"
	$CONFIGURE "$ROOT/$SRC/System/src" "$ROOT/$SRC/Apps" \
		"$ROOT/$SRC/Library"				|| exit 2

	#update the sub-repositories
	echo ""
	echo "Updating the sub-repositories:"
	$FIND "$ROOT/$SRC" -name script.sh | while read script; do
		parent="${script%%/script.sh}"
		#XXX read project.conf instead
		for i in "$parent/"*; do
			[ -f "$i/Makefile" ] || continue
			(cd "$i" && $MAKE download) > "$DEVNULL"
		done
	done

	#make archive
	echo ""
	echo "Archiving DeforaOS from Git repository $GITROOT:"
	for i in "$ROOT/$SRC/.git" "$ROOT/$SRC/"*; do
		i=${i##$ROOT/$SRC/}
		echo "DeforaOS-$DATE_TODAY/$i"
	done | (cd "$ROOT" && $LN -s "$SRC" "DeforaOS-$DATE_TODAY" \
			&& $XARGS $TAR -czf "$DESTDIR/htdocs/download/snapshots/DeforaOS-daily.tar.gz")
	$RM "$ROOT/DeforaOS-$DATE_TODAY"
	echo "$HOMEPAGE/download/snapshots/DeforaOS-daily.tar.gz"
}


#usage
_usage()
{
	echo "Usage: $PROGNAME [-C | -G]" 1>&2
	echo "       $PROGNAME -m [-C | -G]" 1>&2
	return 1
}


#main
delete=0
email=0
#parse options
update=_deforaos_update_cvs
scm="CVS"
while getopts "CGO:m" name; do
	case "$name" in
		C)
			update=_deforaos_update_cvs
			scm="CVS"
			;;
		G)
			update=_deforaos_update_git
			scm="Git"
			;;
		O)
			export "${OPTARG%%=*}"="${OPTARG#*=}"
			;;
		m)
			email=1
			;;
		*)
			_usage
			exit $?
			;;
	esac
done
shift $((OPTIND - 1))
if [ $# -ne 0 ]; then
	_usage
	exit $?
fi
if [ -z "$ROOT" ]; then
	ROOT=$($MKTEMP -d -p "$HOME" "temp.XXXXXX")
	delete=1
fi
[ -n "$ROOT" ] || exit 2
if [ $email -eq 1 ]; then
	$update 2>&1 | $MAIL -s "Daily $scm update: $DATE_TODAY" "$EMAIL"
else
	$update
fi
[ $delete -eq 1 ] && $RMDIR -- "$ROOT"