# new package version
devices_file="/opt/brother/scanner/brscan4/brsanenetdevice4.cfg"

pre_install() {
  /bin/true
}

# new package version
post_install() {
  echo "Find additional documentation about scanner driver install at:"
  echo "http://welcome.solutions.brother.com/bsc/public_s/id/linux/en/instruction_scn1.html"
  echo "For a network installation run the following as root:"
  echo "brsaneconfig4 -a name=\"Brother\" model=\"YOURMODELHERE\" ip=YOUR.SCANNER.IP.HERE"
  /opt/brother/scanner/brscan4/setupSaneScan4 -i
}

# the new package version
# old package version
pre_upgrade() {
  # If user has already configured their scanner then make a config backup
  if [ -f $devices_file ]; then
    cp $devices_file $devices_file.backup || return 1
  fi
}

# new package version
# old package version
post_upgrade() {
  # After upgrade revert user's scanner config and delete a config backup
  if [ -f $devices_file.backup ]; then
    cp $devices_file.backup $devices_file || return 1
    rm $devices_file.backup || return 1
  fi
}

# old package version
pre_remove() {
  /opt/brother/scanner/brscan4/setupSaneScan4 -e
  /bin/true
}

# old package version
post_remove() {
  /bin/true
}