#!/bin/sh -e
#
# 2012-2014 Steven Armstrong (steven-cdist at armstrong.cc)
# 2019 Nico Schottelius (nico-cdist at schottelius.org)
#
# 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/>.
#

os=$(cat "$__global/explorer/os")

case "$os" in
   alpine|archlinux|centos|debian|devuan|suse|scientific|ubuntu)
      :
   ;;
   *)
      echo "Your operating system ($os) is currently not supported by this type (${__type##*/})." >&2
      echo "Please contribute an implementation for it if you can." >&2
      exit 1
   ;;
esac

state_should="$(cat "$__object/parameter/state")"
if [ ! -s "$__object/explorer/value" ]; then
   state_is='absent'
else
   state_is=$(diff -q "$__object/parameter/value" "$__object/explorer/value" >/dev/null \
      && echo present \
      || echo changed
   )
fi

if [ "$state_should" = "$state_is" ]; then
   # Nothing to do, move along
   exit 0
fi

key="$(cat "$__object/parameter/key" 2>/dev/null || echo "$__object_id")"
value="$(cat "$__object/parameter/value")"

case "$state_should" in
   absent)
      # revert parameter to its default value
      echo "postconf -# $key"
   ;;
   present)
      echo "postconf -e '$key=$value'"
   ;;
esac
