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package HotSaNICmod::OSdep;

use RRDs;

use lib "../../lib";
use HotSaNIClogparse;

use Time::Local;

@months=("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
%MONTHS=(Jan=>0,Feb=>1,Mar=>2,Apr=>3,May=>4,Jun=>5,Jul=>6,Aug=>7,Sep=>8,Oct=>9,Nov=>10,Dec=>11);

my %ERRORTIME;

##### update specific database
sub updatedb {
  my ($name,$sampletime,$value)=@_;
  my $ERROR;
  if (HotSaNIClog::check_debuglevel("MODULE_VERBOSE")) { HotSaNIClog::info(" $name:$value"); }
  if ( ! -e "rrd/$name.rrd" ) { system("./makerrd","$name") }
  if ((defined $name) && (defined $sampletime) && (defined $value)) {
    $ERRORTIME{$name} = 0 if !defined $ERRORTIME{$name};
    if ( $sampletime > $ERRORTIME{$name} ) {
      RRDs::update "rrd/$name.rrd",$sampletime.":".$value;
      if ($ERROR = RRDs::error) {
        HotSaNIClog::error("unable to update `$name.rrd': $ERROR");
        if (index($ERROR,"last update time") >=0) {
          $ERROR =~ /last update time is (\d+)/,$ERRORTIME{$name}=$1;
          HotSaNIClog::warn("Not trying to update `$name.rrd' again before $ERRORTIME{$name}");
          }
        }
      }
    }
  }

sub version {
  ($VERSION = '$Revision: 1.12 $') =~ s/.*(\d+\.\d+).*/$1/;
  return "default.pm $VERSION";
  }

sub sample {

  my %args=@_;

# check if scan-interval is exceeded

  my $now=time;
  my $mtime=0;
  if (-e "lastcheck.dat") { $mtime=(stat("lastcheck.dat"))[9]; }

  if ($mtime+$args{INTERVAL} <= $now) {

# update timestamp on lastcheck file

    utime $now,$now,"lastcheck.dat";

    my @items=();
    foreach (@{$args{ITEM}}) { my ($item)=split /,/; push @items,$item; $COUNT{$item}=0; }

    if (HotSaNIClog::check_debuglevel("MODULE_SAMPLING")) { HotSaNIClog::info("sampling: ".join(" ",@items)); }

    my ($pos,@parse)=HotSaNIClogparse::findlogs($args{LOGPATH},$args{LOGNAME}.".*","lastcheck.dat");
    my $seconds1=0;

    foreach $file (@parse) {
      if (HotSaNIClog::check_debuglevel("MODULE_SAMPLING")) { HotSaNIClog::info("parsing $file"); }
      open FILE,"$file";
      $firstline=<FILE>;
      if (HotSaNIClog::check_debuglevel("MODULE_SAMPLING")) { HotSaNIClog::info("seeking to pos. $pos"); }
      seek FILE,$pos,0;
      $pos=0;
      while (<FILE>) {
        chomp;

        my %result=HotSaNIClogparse::parseline_apache($_);

# number of seconds of beginning of the hour in $datestr
        $seconds=timelocal(0,0,$result{TShour},$result{TSday},$result{TSmonth},$result{TSyear})-$result{TSzdiff}*36;

# check if another hour started and save sampling results for last hour
        if ($seconds1 < $seconds) {
          if (HotSaNIClog::check_debuglevel("MODULE_VERBOSE")) { HotSaNIClog::info("$year $mon $day $hour:$min  -  $seconds $hrcorrection"); }

# if counts for last hour exist, save them
          if ($seconds1 > 0) {
            if (HotSaNIClog::check_debuglevel("MODULE_VERBOSE")) { HotSaNIClog::info("save for $seconds1:"); }

# store data...
            foreach $item (@items) {
              updatedb($item,$seconds1,$COUNT{$item});
              $COUNT{$item}=0;
              }
            
# store last-check info
            open LAST,">lastcheck.dat";
            print LAST "$firstline",tell(FILE),"\n",$seconds1,"\n";
            close LAST;

# if last stored hour wasnt 1 hour ago, store the hours between as zero.
            if ($seconds1+3600 < $seconds) {
              for ($secs=$seconds1+3600;$secs<$seconds;$secs+=3600) {
                # store data (0)
                foreach $item (@items) { updatedb($item,$secs,0); }
                }
              }
            }
          $seconds1=$seconds;
          }
        foreach $item (@items) { if (index($_,"/$item?") >= 0) { $COUNT{$item}++; } }
        }
      close FILE;
      }
    }
  }

1;