#!/bin/sh
#
# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
#
# 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/>.
#

key="$(cat "$__object/parameter/key")"
file="$(cat "$__object/parameter/file")"
delimiter="$(cat "$__object/parameter/delimiter")"
value="$(cat "$__object/parameter/value")"

state_is="$(cat "$__object/explorer/state")"
state_should="$(cat "$__object/parameter/state")"

if [ "$state_is" = "$state_should" ]; then
   # nothing to do
   exit 0
fi

case "$state_should" in
   absent)
      # remove lines starting with key
      echo "sed '/^$key\($delimiter\+\)/d' \"$file\" > \"$file.cdist-tmp\""
      echo "mv \"$file.cdist-tmp\" \"$file\""
   ;;
   present)
      case "$state_is" in
         absent)
            # add new key and value
            echo "echo \"${key}${delimiter}${value}\" >> \"$file\""
         ;;
         wrongvalue)
            # change exisiting value
            echo "sed \"s|^$key\($delimiter\+\).*|$key\1$value|\" \"$file\" > \"$file.cdist-tmp\""
            echo "mv \"$file.cdist-tmp\" \"$file\""
         ;;
         *)
            echo "Unknown explorer state: $state_is" >&2
            exit 1
      esac
   ;;
   *)
      echo "Unknown state: $state_should" >&2
      exit 1
esac