#!/bin/sh
set -eu
if [ -d /run/systemd/system ]; then
  if [ -S /run/mission-core-sensors/driver.sock ]; then
    if ! /usr/bin/python3 -I -c 'import http.client,json,socket; c=http.client.HTTPConnection("driver",timeout=5); c.sock=socket.socket(socket.AF_UNIX); c.sock.settimeout(5); c.sock.connect("/run/mission-core-sensors/driver.sock"); c.request("GET","/prepare-safe"); r=c.getresponse(); assert r.status==200 and json.load(r).get("safe") is True'; then
      echo "Mission Core Node: остановите захват или просмотр записи перед обновлением или удалением." >&2
      exit 1
    fi
  fi
  if [ -S /run/mission-core-k1/driver.sock ]; then
    if ! /usr/bin/python3 -I -c 'import http.client,json,socket; c=http.client.HTTPConnection("k1",timeout=5); c.sock=socket.socket(socket.AF_UNIX); c.sock.settimeout(5); c.sock.connect("/run/mission-core-k1/driver.sock"); c.request("GET","/prepare-safe"); r=c.getresponse(); assert r.status==200 and json.load(r).get("safe") is True'; then
      echo "Mission Core Node: завершите подключение или запись K1 перед обновлением." >&2
      exit 1
    fi
  fi
  mc_node_device_job=$(systemctl show --property=ActiveState --value mission-core-node-realsense-prepare.service 2>/dev/null || true)
  case "$mc_node_device_job" in
    active|activating) echo "Mission Core Node: дождитесь завершения подготовки устройства." >&2; exit 1 ;;
  esac

  mc_node_environment_state=$(systemctl show --property=ActiveState --value mission-core-node-environment.service 2>/dev/null || true)
  case "$mc_node_environment_state" in
    active|activating)
      echo "Mission Core Node: дождитесь завершения настройки окружения в приложении." >&2
      exit 1
      ;;
  esac
fi
case "$1" in
  remove|deconfigure)
    mc_node_ssh_snippet=/etc/ssh/sshd_config.d/60-mission-core-node.conf
    if [ -e "$mc_node_ssh_snippet" ]; then
      if cmp -s /usr/share/mission-core-node/60-mission-core-node.conf "$mc_node_ssh_snippet"; then
        rm "$mc_node_ssh_snippet"
      else
        mc_node_saved_snippet=$(mktemp /etc/ssh/sshd_config.d/mission-core-node-removed.XXXXXX)
        mv "$mc_node_ssh_snippet" "$mc_node_saved_snippet"
      fi
    fi
    mc_node_environment_snippet=/etc/systemd/system/mission-core-node.service.d/60-environment.conf
    if [ ! -L "$mc_node_environment_snippet" ] && cmp -s /usr/share/mission-core-node/60-environment.conf "$mc_node_environment_snippet"; then
      rm "$mc_node_environment_snippet"
    fi
    if [ -d /run/systemd/system ]; then
      if [ -x /usr/sbin/sshd ]; then
        /usr/sbin/sshd -t
        systemctl try-reload-or-restart ssh.service
      fi
      systemctl stop mission-core-k1.service
      systemctl disable mission-core-k1.service || true
      systemctl stop mission-core-realsense.service
      systemctl disable mission-core-realsense.service || true
      systemctl stop mission-core-node.service
      systemctl disable mission-core-node.service
      systemctl stop mission-core-node-monitor.service
      systemctl disable mission-core-node-monitor.service
      systemctl stop postgresql@16-ndc-monitor.service
      systemctl disable postgresql@16-ndc-monitor.service
    fi
    ;;
esac