#!/bin/sh -e
#
# 2020 Ander Punnar (ander-at-kvlt-dot-ee)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#

__package unattended-upgrades

export require='__package/unattended-upgrades'

# in normal circumstances 20auto-upgrades is managed
# by debconf and it can only contain these lines

__file /etc/apt/apt.conf.d/20auto-upgrades \
    --owner root \
    --group root \
    --mode 644 \
    --source - << EOF
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Unattended-Upgrade "1";
EOF

# lets not write into upstream 50unattended-upgrades file,
# but use our own config file to avoid clashes

conf_file='/etc/apt/apt.conf.d/51unattended-upgrades-cdist'

conf='# this file is managed by cdist'

if [ -f "$__object/parameter/option" ]
then
    o=''

    while read -r l
    do
        o="$( printf '%s\nUnattended-Upgrade::%s "%s";\n' "$o" "${l%%=*}" "${l#*=}" )"
    done \
        < "$__object/parameter/option"

    conf="$( printf '%s\n%s\n' "$conf" "$o" )"
fi

if [ -f "$__object/parameter/blacklist" ]
then
    b='Unattended-Upgrade::Package-Blacklist {'

    while read -r l
    do
        b="$( printf '%s\n"%s";\n' "$b" "$l" )"
    done \
        < "$__object/parameter/blacklist"

    conf="$( printf '%s\n%s\n}\n' "$conf" "$b" )"
fi

if [ "$( echo "$conf" | wc -l )" -gt 1 ]
then
    echo "$conf" \
        | __file "$conf_file" \
            --owner root \
            --group root \
            --mode 644 \
            --source -
else
    __file "$conf_file" --state absent
fi