#!/bin/bash

update_databases() {
  # Update mime database
  type -P update-mime-database &>/dev/null &&
    update-mime-database /usr/share/mime &>/dev/null

  # Update xdg icon database
  type -P xdg-icon-resource &>/dev/null &&
    xdg-icon-resource forceupdate --theme hicolor &>/dev/null

  # Update desktop database
  type -P update-desktop-database &>/dev/null &&
    update-desktop-database -q &>/dev/null
}

# arg 1:  the new package version
post_install() {
  # Add vboxusers group, GID 108 is reserved (http://wiki.archlinux.org/index.php/UID_and_GID_list),
  getent group vboxusers &> /dev/null || groupadd -f -g 108 vboxusers

  # Load new udev rule for module vboxdrv
  udevadm control --reload-rules

  # Update databases
  update_databases

  # Show warnings
  cat <<EOF

==> Remember to add allowed users to the vboxusers group:
==> # gpasswd -a USERNAME vboxusers
==
==> To compile/load virtualbox modules automatically at startup you can systemctl enable dkms.service
==
==> To build and install your modules
==> # run dkms autoinstall
==> or
==> # vboxsetup setup
==> if you don't use dkms
EOF
}

# arg 1:  the new package version
# arg 2:  the old package version
pre_upgrade() {
  (($(vercmp $2 '4.3.14-3') < 0 )) && /usr/bin/vboxsetup remove || true
  pre_remove "$2" 

  # Remove any stuff remaining from the module compilation
  rm -Rf "/opt/VirtualBox"
}

post_upgrade() {
  post_install
}

pre_remove() {
  # Stop running services
  _service="vboxweb.service"
  systemctl is-active ${_service} &>/dev/null
  if [[ "$?" -eq 0 ]]; then
    systemctl stop ${_service}
  fi
  systemctl is-enabled ${_service} &>/dev/null
  if [[ "$?" -eq 0 ]]; then
    systemctl disable ${_service}
  fi
  
  # Remove modules
  [[ -n $1 ]] && dkms remove vboxhost/${1%-*} --all &>/dev/null || true
}

post_remove() {
  # Remove any stuff remaining from the module compilation
  rm -Rf "/opt/VirtualBox"

  # Remove any run files
  rm -Rf "/var/run/VirtualBox"

  # Update databases
  update_databases

  # remove vboxusers group
  groupdel vboxusers &>/dev/null || true
}

# vim:set ts=2 sw=2 ft=sh et: