#!/bin/sh
set -eu

usage() {
	cat <<EOF
Usage:
	$0 HOSTNAME

Examples:
	$0 kuvira
EOF
}

NAME="${1:-}"
if [ -z "$NAME" ]; then
	printf 'Missing HOSTNAME\n' >&2
	usage >&2
	exit 2
fi

FILE="$(find . -name hostname.txt -exec grep -l "^$NAME$" {} \;)"
if [ -z "$FILE" ]; then
	printf 'Unknown hostname "%s"\n' "$NAME" >&2
	exit 2
fi

DIR="$(dirname "$FILE")"

cd "$DIR"
. ./tf-env.sh
terraform init
terraform apply
cd - > /dev/null

TLD="$(cat "$DIR"/tld.txt)"
DIRS='/opt /srv'
# shellcheck disable=2029
ssh "$TLD" "\
	sudo mkdir -p $DIRS && \
	sudo chown $USER:users -R $DIRS && \
	chmod -R 755 $DIRS
"

rsync -avzPL opt "$DIR/opt" "$TLD":/

if [ -f "$DIR"/machines.scm ]; then
	guix deploy "$DIR"/machines.scm
elif [ -f "$DIR"/configuration.nix ]; then
	scp "$DIR"/configuration.nix "$TLD":/etc/nixos/
	ssh "$TLD" sudo nixos-rebuild switch
else
	printf 'Uknown deploy type for "%s"\n' "$NAME" >&2
	exit 2
fi