#!/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 "$PREFIX/hamlab"
# other-architecture builds sit beside the binary so the hub can push them to matching machines
for alt in bin/hamlab-linux-*; do
  [ -f "$alt" ] && sudo install -m 0755 "$alt" "$PREFIX/hamlab-${alt##*-linux-}"
done
sudo install -m 0644 "$unit" /etc/systemd/system/hamlab.service
rm -f "$unit"
# Keep the daemon's read-only sudo polling (SMART, UPS, journal) out of the journal: with
# 250 ms refresh rates the sudo session lines would otherwise dominate the log.
quiet=$(mktemp)
cat > "$quiet" <<'SUDOERS'
# Ham Lab: don't log the daemon's read-only polling commands (installed by deploy/install.sh)
Cmnd_Alias HAMLAB_QUIET = /usr/sbin/smartctl, /usr/bin/smartctl, /usr/sbin/pwrstat, /usr/bin/journalctl, /usr/bin/tail, /usr/bin/cat, /usr/bin/ls, /usr/bin/crontab
Defaults!HAMLAB_QUIET !syslog, !pam_session, !pam_setcred
SUDOERS
if sudo visudo -cf "$quiet" >/dev/null 2>&1; then
  sudo install -m 0440 -o root -g root "$quiet" /etc/sudoers.d/hamlab-quiet
else
  echo "warning: sudoers snippet failed validation; skipped" >&2
fi
rm -f "$quiet"
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