#!/bin/bash
source "/usr/share/dar/dar-functions"

function help {
	cat <<EOF
usage: dar-exec [-q] [-d dist,dist2] cmd	
Run a command in one or more DAR build environments

dar-exec options:

  -d dist,dist2         select build envs
  -h                    this help message
  -q                    be very quiet

exported variables:

  arch, dist, nick, path, repo, tag

examples:

  dar-exec cat /etc/redhat-release
  dar-exec 'rpm -qa | wc -l'
  dar-exec 'rpm -ihvU /dar/packages/foo/*\$dist*\$arch.rpm'
  diff -u <(dar-exec -d el4i rpm -qa | sort) <(dar-exec -d el4a rpm -qa | sort)

EOF
exit 1
}

daropts "d:hq" $@
shift $((OPTIND-1))
CMD=$@

if [ ! -d "$ROOT" ]; then
	echo "ERROR: probably in chroot jail" >&2
	exit 1
fi

set_dists
set_as_root
AS_ROOT=1

for distname in $DISTS; do
	if [ -z "$QUIET" ]; then
		echo -e "$_BL_$_WH= Executing \"$_YE$CMD$_WH\" for $_YE$distname$_WH.$_DE"
	fi

	if [ -r "$CONFIGDIR/dists/$distname/config" ]; then
		source "$CONFIGDIR/dists/$distname/config"
		export arch="$DISTARCH" dist="${DISTNAME// *}" nick="$DISTNICK" path="$DISTPATH" repo="$REPO" tag="${DISTTAG// *}"
	fi

	### Check for building as user
	if [ $AS_ROOT -eq 1 ]; then
#		DO_SU="/bin/su -l -c"
		if [ "$FORCE_VERBOSE" ]; then
			DO_SU="/bin/bash -x -s"
		else
			DO_SU="/bin/bash -s"
		fi
	else
		if [ "$FORCE_VERBOSE" ]; then
			DO_SU="/bin/su -lm $BUILD_USER -- /bin/bash -x -s"
		else
			DO_SU="/bin/su -lm $BUILD_USER -- /bin/bash -s"
		fi
	fi

#	echo chroot "$CHROOTDIR/$distname" $DO_SU $CMD
#	chroot "$CHROOTDIR/$distname" $DO_SU $CMD
	echo "$CMD" | chroot "$CHROOTDIR/$distname" $DO_SU
	RC=$?

	if [ $RC -ne 0 ]; then
		error "$_RE_${_WH}Failed execution (RC=$_YE$RC$_WH)$_DE"
	fi
done

exit 0