#!/bin/sh

: <<=cut

=head CONFIGURATION

    Plugin to monitor OpenSMTPD delivery and queue

=head COPYRIGHT

    Copyright (C) 2022 Rowan Wookey <https://www.rwky.net>

=head LICENSE

   This program 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.

   This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.

=head MAGIC MARKERS

    #%# family=auto
    #%# capabilities=autoconf

=cut

if [ "$1" = "autoconf" ]
then
    if command -v smtpctl > /dev/null 2>&1 
    then
        echo 'yes'
    fi
    exit 0
fi

if [ "$1" = "config" ]; then
    echo "graph_title OpenSMTPD status"
    echo "graph_category mail"
    echo "graph_period minute"
    echo "graph_vlabel Mails per minute"
    echo "graph_info This graph shows the delivery status for OpenSMTPD"
    echo "graph_args -l 0"
    echo "graph_scale no"
    echo "ok.label Delivered"
    echo "ok.type DERIVE"
    echo "ok.min 0"
    echo "permfail.label Permfail"
    echo "permfail.type DERIVE"
    echo "permfail.min 0"
    echo "tempfail.label Tempfail"
    echo "tempfail.type DERIVE"
    echo "tempfail.min 0"
    echo "loop.label Loop"
    echo "loop.type DERIVE"
    echo "loop.min 0"
    echo "queued.label Queued"
    echo "queued.type GAUGE"
    echo "queued.min 0"
    exit 0
else
	for stat in ok permfail tempfail loop
	do
		echo -n "${stat}.value " 
		smtpctl show stats | grep "scheduler.delivery.$stat" | awk -F '=' '{ print $NF;} END { if (NR == "0") { print NR } }'

	done
		echo -n "queued.value " 
		smtpctl show stats | grep "scheduler.envelope=" | awk -F '=' '{ print $NF;} END { if (NR == "0") { print NR } }'
fi