arc-addons/revert/install.sh

#!/usr/bin/env ash
#
# Copyright (C) 2023 AuxXxilium <https://github.com/AuxXxilium> and Ing <https://github.com/wjz304>
#
# This is free software, licensed under the MIT License.
# See /LICENSE for more information.
#

if [ "${1}" = "late" ]; then
  echo "Installing addon revert - ${1}"

  mkdir -p "/tmpRoot/usr/arc/"
  echo '#!/usr/bin/env bash' >"/tmpRoot/usr/arc/revert.sh"
  chmod +x "/tmpRoot/usr/arc/revert.sh"
  
  mkdir -p "/tmpRoot/usr/arc/addons/"
  for F in $(ls /tmpRoot/usr/arc/addons/* 2>/dev/null); do
    if grep -q "/addons/${F##*/}" "/addons/addons.sh" 2>/dev/null; then continue; fi
    chmod +x "${F}" || true
    "${F}" "uninstall" || true
    rm -f "${F}" || true
  done

  if [ ! "$(cat "/tmpRoot/usr/arc/revert.sh")" = '#!/usr/bin/env bash' ]; then
    mkdir -p "/tmpRoot/usr/lib/systemd/system"
    DEST="/tmpRoot/usr/lib/systemd/system/revert.service"
    cat <<EOF >${DEST}
  [Unit]
  Description=revert
  After=multi-user.target

  [Service]
  Type=oneshot
  RemainAfterExit=yes
  ExecStart=/usr/arc/revert.sh

  [Install]
  WantedBy=multi-user.target
  EOF

    mkdir -vp /tmpRoot/usr/lib/systemd/system/multi-user.target.wants
    ln -vsf /usr/lib/systemd/system/revert.service /tmpRoot/usr/lib/systemd/system/multi-user.target.wants/revert.service
  else
    rm -f "/tmpRoot/usr/lib/systemd/system/revert.service"
    rm -f "/tmpRoot/usr/lib/systemd/system/multi-user.target.wants/revert.service"
  fi

  # backup current loader configs
  rm -rf "/tmpRoot/usr/arc/backup"
  if [ -d "/usr/arc/backup" ]; then
    mkdir -p "/tmpRoot/usr/arc/backup"
    cp -rf /usr/arc/backup/* "/tmpRoot/usr/arc/backup/"
  fi

  # Version
  echo "LOADERLABEL=\"${LOADERLABEL}\""      >"/tmpRoot/usr/arc/VERSION"
  echo "LOADERVERSION=\"${LOADERVERSION}\"" >>"/tmpRoot/usr/arc/VERSION"

fi