#!/usr/bin/perl
#
# Munin plugin for number of spots in a MySQL database
#
# Copyright (C) 2011 - Rowdy Schwachöfer (http://rowdy.nl)
#
# Spotweb       : http://github.com/spotweb/spotweb
# Original idea : smeerbartje (http://gathering.tweakers.net/forum/myreact/190949)
#                 slommer     (http://gathering.tweakers.net/forum/myreact/353335)
#
# 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 <http://www.gnu.org/licenses/>.
#
#
# Configuration example
#
# [spotweb*]
# env.mysql /usr/bin/mysql                               # MySQL binary (optional)
# env.mysqlopts -u <MYSQL_USERNAME> -p<MYSQL_PASSWORD>   # How to connect to the database (optional if no password is set)
# env.database spotweb                                   # Spotweb database (optional)
#
# [spotweb_average]
# env.period 1800                                        # The period over wich to check in seconds, default to 30 minutes (1800 seconds)
# env.watchlist yes                                      # Show items in the watchlist (period independend)
#
#

use strict;

my $MYSQL = $ENV{mysql} || "/usr/bin/mysql";
my $MYSQLOPTS = $ENV{mysqlopts} || "";
my $DATABASE = $ENV{database} || "spotweb";
my $PERIOD = $ENV{period} || 1800;
my $SHOW_WATCHLIST = $ENV{watchlist} || "yes";
my $FROMSTAMP = time - $PERIOD;
my $TITLE = "Spotweb (".($PERIOD / 60)." minute average)";

# Output for config
if(defined $ARGV[0] && $ARGV[0] eq 'config')
{
    print <<EOC
graph_title $TITLE
graph_vlabel Totals
graph_category spotweb
spots.label New Spots
downloaded.label Downloads
EOC
;

    if($SHOW_WATCHLIST eq 'yes') {
		print <<EOC
watchlist.label Watchlist (total)
EOC
;
    }
    exit 0;
}

# Spot count
my $spots = `$MYSQL $MYSQLOPTS -e 'SELECT count(*) as spots FROM $DATABASE.spots WHERE stamp > $FROMSTAMP;'`;
$spots =~ /(\d+)/; 
print "spots.value ".$1."\n";

# Downloaded
my $downloaded = `$MYSQL $MYSQLOPTS -e 'SELECT count(messageid) as comments FROM $DATABASE.spotstatelist WHERE download IS NOT NULL'`;
$downloaded =~ /(\d+)/;
print "downloaded.value ".$1."\n";

# Watchlist
if($SHOW_WATCHLIST eq 'yes') {
	my $watchlist = `$MYSQL $MYSQLOPTS -e 'SELECT count(messageid) as watchlist FROM $DATABASE.spotstatelist WHERE watch IS NOT NULL'`;
	$watchlist =~ /(\d+)/;
	print "watchlist.value ".$1."\n";
}
