#!/bin/sh

<% if attributes[:deb_maintainerscripts_force_errorchecks?] -%>
set -e
<% end -%>

before_remove() {
<%# Making sure that at least one command is in the function -%>
<%# avoids a lot of potential errors, including the case that -%>
<%# the script is non-empty, but just whitespace and/or comments -%>
    :
<% if script?(:before_remove) -%>
<%=  script(:before_remove) %>
<% end -%>

<%# Stop and remove any systemd services that were installed-%>
<% if attributes[:deb_systemd].any? -%>
debsystemctl=$(command -v deb-systemd-invoke || echo systemctl)
<% attributes[:deb_systemd].each do |service| -%>
$debsystemctl stop <%= service %> >/dev/null || true
systemctl disable <%= service %> >/dev/null || true
<% end -%>
systemctl --system daemon-reload >/dev/null || true
<% end -%>
}

dummy() {
    :
}

if [ "${1}" = "remove" -a -z "${2}" ]
then
    # "before remove" goes here
    before_remove
elif [ "${1}" = "upgrade" ]
then
    # Executed before the old version is removed
    # upon upgrade.
    # We should generally not do anything here. The newly installed package
    # should do the upgrade, not the uninstalled one, since it can't anticipate
    # what new things it will have to do to upgrade for the new version.
    dummy
elif echo "${1}" | grep -E -q "(fail|abort)"
then
    echo "Failed to install before the pre-removal script was run." >&2
    exit 1
fi