#!/usr/bin/perl -w

use strict;
use Date::Parse;
use FS::Daemon ':all'; #daemonize1 drop_root daemonize2 myexit logfile sig*
use FS::UID qw( adminsuidsetup dbh driver_name );
use FS::Record qw( qsearch str2time_sql str2time_sql_closing );
use FS::torrus_srvderive;

our $DEBUG = 1;

my $user = shift or die &usage;
$FS::Daemon::PID_NEWSTYLE = 1;
daemonize1('freeside-torrus-srvderive');

drop_root();

adminsuidsetup($user);

logfile( "%%%FREESIDE_LOG%%%/torrus-srvderive-log.". $FS::UID::datasrc );

daemonize2();

our $conf = new FS::Conf;

die "not running: network_monitoring_system not Torrus_Internal\n"
  unless _shouldrun();

#--

my $str2time = str2time_sql();
my $c = str2time_sql_closing();

my $_date = concat_sql([ 'srvexport.srv_date', "' '", 'srvexport.srv_time' ]);
$_date = "CAST( $_date AS TIMESTAMP )" if driver_name =~ /^Pg/i;
$_date = str2time_sql. $_date.  str2time_sql_closing;

my $other_date = concat_sql([ 'other.srv_date', "' '", 'other.srv_time' ]);
$other_date = "CAST( $other_date AS TIMESTAMP )" if driver_name =~ /^Pg/i;
$other_date = str2time_sql. $other_date.  str2time_sql_closing;

my $sql = "
  SELECT DISTINCT srv_date, srv_time FROM srvexport
    WHERE NOT EXISTS (
                       SELECT 1 FROM srvexport AS other
                         WHERE other.serviceid IN ( ?||'_IN', ?||'_OUT')
                           AND ABS( $_date - $other_date ) <= 60
                     )
    ORDER BY id
";

while (1) {

  #my $found = 0;

  foreach my $torrus_srvderive ( qsearch('torrus_srvderive', {}) ) {

    my $serviceid = $torrus_srvderive->serviceid;

    my $sth = dbh->prepare($sql) or die $DBI::errstr; #better recovery?
    $sth->execute($serviceid, $serviceid) or die $sth->errstr;
    my $prev = 0;
    while ( my $row = $sth->fetchrow_arrayref ) {
      my( $srv_date, $srv_time ) = @$row;
      my $cur = str2time( "$srv_date $srv_time" );
      next if $cur-$prev <= 60;
      
      warn "no $serviceid for $srv_date $srv_time; adding\n"
        if $DEBUG;

    }

  }


  myexit() if sigterm() || sigint();
  sleep 60; #unless $found
}

sub _shouldrun {
     $conf->exists('network_monitoring_system')
  && $conf->config('network_monitoring_system') eq 'Torrus_Internal';
}

sub usage { 
  die "Usage:\n\n  freeside-cdrrewrited user\n";
}


=head1 NAME

freeside-torrus-srvderive - Freeside's Torrus virtual port daemon.

=head1 SYNOPSIS

  freeside-torrus-srvderive

=head1 DESCRIPTION

Runs continuously, searches for samples in the srvexport table which do not
have an entry for combined virtual ports, and adds them.

=head1 SEE ALSO

=cut

1;