#! /bin/sh
set -e

CONFIG="$1"
if [ -z "$CONFIG" ]; then
	echo "Usage: $0 CONFIG" >&2
	exit 1
fi

NEWLINE='
'

IFS_SAVE="$IFS"
IFS="$NEWLINE"
for line in $(baz cat-config "$1"); do
	IFS="$IFS_SAVE"
	set -- $line
	DIR="$1"
	VERSION="$2"

	if [ -d "$DIR" ]; then
		OLDVERSION="$(baz tree-version -d "$DIR")"
		if [ "$VERSION" != "$OLDVERSION" ]; then
			baz switch -d "$DIR" "$VERSION"
		else
			baz update -d "$DIR" "$VERSION"
		fi
	else
		baz get "$VERSION" "$DIR"
	fi
done