#!/usr/bin/env bash

set -o errexit
set -o errtrace
# set -o nounset

# debug=echo

if [ "x" == "x$2" ]
then
  echo "usage: $0 <ip> <host>"
  exit 1
fi

nixanywhere=~/nixos/nixos-anywhere
nixsrc=~/nixos
ip=${1}
host=${2}

if [ ! -f ${nixsrc}/hosts/${host}/default.nix ]
then
  echo "Please set  up ${nixsrc}/hosts/${host}/default.nix before running"
  exit 1
fi

cd ${nixanywhere}
ssh-keygen -R ${ip}
nix run github:nix-community/nixos-anywhere -- --flake .#${host} root@${ip}
cd ${nixsrc}
sleep 5
until ping -c1 ${ip}
do
  sleep 5
done
ssh-keygen -R ${ip} 
ssh -o StrictHostKeyChecking=accept-new root@${ip} nixos-generate-config 
scp root@${ip}:/etc/nixos/hardware-configuration.nix hosts/${host}/hardware-configuration.nix 
git add hosts/${host}/hardware-configuration.nix 
nixos-rebuild switch --flake .#${host} --target-host root@${ip}
sleep 5
until ping -c1 ${ip}
do
  sleep 5
done
rsync -av ~/.ssh ~/bin don@${ip}: