#!/bin/sh
# Install the built binary and a systemd unit on this host, then (re)start the service.
# Runs as the user who should own the terminals (their login shell, their sudo rights);
# needs sudo only for the copy into /usr/local/bin and the unit install.
#
#   HAMLAB_USER   user the daemon runs as        (default: the invoking user)
#   PREFIX        binary directory               (default: /usr/local/bin)
set -eu
cd "$(dirname "$0")/.."

USER_NAME="${HAMLAB_USER:-${SUDO_USER:-$(id -un)}}"
GROUP_NAME="$(id -gn "$USER_NAME")"
HOME_DIR="$(getent passwd "$USER_NAME" | cut -d: -f6)"
PREFIX="${PREFIX:-/usr/local/bin}"
[ -n "$HOME_DIR" ] || { echo "no home dir for $USER_NAME" >&2; exit 1; }

unit=$(mktemp)
sed -e "s|@USER@|$USER_NAME|g" -e "s|@GROUP@|$GROUP_NAME|g" -e "s|@HOME@|$HOME_DIR|g" -e "s|@PREFIX@|$PREFIX|g" \
  deploy/hamlab.service > "$unit"

sudo install -m 0755 bin/hamlab "$PREFIX/hamlab"
sudo install -m 0644 "$unit" /etc/systemd/system/hamlab.service
rm -f "$unit"
sudo systemctl daemon-reload
sudo systemctl enable hamlab.service >/dev/null
if [ ! -f "$HOME_DIR/apps/hamlab/config.json" ]; then
  echo "No config yet. Set a password, then start:  $PREFIX/hamlab passwd && sudo systemctl start hamlab" >&2
  exit 0
fi
sudo systemctl restart hamlab.service
sleep 1
systemctl is-active hamlab.service && "$PREFIX/hamlab" version