#!/bin/sh

DISTRO=$1
TMPDIR=_satmp

if [ -z "$DISTRO" ]; then
  echo "Usage: switch-arch DISTRO_URL"
  exit 0
fi

if [ "$(id -u)" != "0" ]; then
  echo "Please run this script as root"
  exit 11
fi

if [ ! -f ./sbin/eva-control ]; then
  echo "Please start the script in EVA ICS directory"
  exit 1
fi

rm -rf $TMPDIR || exit 2
mkdir $TMPDIR || exit 2
cd $TMPDIR || exit 2
echo "Downloading ${DISTRO}..."
curl "${DISTRO}" -o eva.tgz || exit 3
echo "Extracting..."
tar xzf eva.tgz || exit 4
find . -maxdepth 1 -type d -name "eva-*" -exec mv -f {} eva \; || exit 4
if ! ./eva/svc/eva-node --mode info > /dev/null ; then
  echo "Unable to check eva-node, arch mismatch?"
  exit 5
fi
../sbin/eva-control stop || exit 5
echo "Replacing files, DO NOT INTERRUPT..."
rm -f ../cli/eva-cloud-manager || exit 6
rm -f ./eva/ui/index.html || exit 6
rm -f ./eva/ui/favicon.ico || exit 6
rm -f ./eva/update.sh || exit 6
cp -rf ./eva/* .. || exit 6
cd ..
rm -rf $TMPDIR || exit 7
./sbin/eva-control start || exit 8
echo
echo "Switch completed"