#!/usr/bin/env bash
# Install the dvorakmortonxd.dev dev server as a SYSTEM systemd unit so it
# starts at boot for the whole machine (no login / no linger needed).
#
# Run it with root, e.g.:
#     doas bash deploy/install-system-service.sh
#
# It also retires the per-user unit, so the two don't fight over :3000 and
# .next/dev/lock.
set -euo pipefail

if [ "$(id -u)" -ne 0 ]; then
  echo "root required — run: doas bash \"$0\"" >&2
  exit 1
fi

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
unit_src="$here/dvorakmortonxd-dev.system.service"
unit_dst="/etc/systemd/system/dvorakmortonxd-dev.service"
user_unit="/home/martin/.config/systemd/user/dvorakmortonxd-dev.service"

install -m 0644 "$unit_src" "$unit_dst"
systemctl daemon-reload

# Retire the per-user copy if it exists (installed earlier as martin).
if [ -e "$user_unit" ] || [ -e "/home/martin/.config/systemd/user/default.target.wants/dvorakmortonxd-dev.service" ]; then
  if command -v runuser >/dev/null 2>&1; then
    runuser -u martin -- env XDG_RUNTIME_DIR=/run/user/1000 \
      DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus \
      systemctl --user disable --now dvorakmortonxd-dev.service || true
  else
    # runuser is unavailable (minimal container). The caller should have run
    # `systemctl --user stop dvorakmortonxd-dev` first; we still remove the files
    # so the two units can't fight over :3000 on the next boot.
    echo "note: runuser not found — stop the per-user unit manually if it is still running" >&2
  fi
  rm -f "$user_unit" \
        /home/martin/.config/systemd/user/default.target.wants/dvorakmortonxd-dev.service
fi

systemctl enable --now dvorakmortonxd-dev.service
systemctl --no-pager --full status dvorakmortonxd-dev.service || true

echo
echo "Installed. Manage it with:"
echo "  systemctl status|restart|stop dvorakmortonxd-dev"
echo "  journalctl -u dvorakmortonxd-dev -f"