#!/usr/bin/perl -w
use strict;
use locale;
use File::Copy;
use File::Temp;
use Time::localtime;


#----------------------- CONFIG ------------------------------------
# For debuging and troubleshooting. Nice hunt !
my $DEBUG=1;                                                    
# enable log
my $LOG=1;                                                              

my @argv = @ARGV;                       #keep hands off the argument array
my $SPOOL = "/var/tmp";                 #where are my speedy memory drive?
my $LOG_FILE = "/var/tmp/backend.log";
my $VPRINTER = "/opt/vprn/debug/p_monitor";
my $DATE_BIN = "/bin/date";             #path to date
my $ENABLE ="/usr/sbin/cupsenable";     #path to enable binary
my $FH_TEMP;                            #File handle to temp file
my $DEVICE_URI =$ENV{DEVICE_URI};
#--------------------------------------------------------------------------------------------------

#print "Work it \n";
my ($jobID,$userName,$jobTitle,$copies,$printOptions,$printFile) = @argv;

#--------------------------------------------------------------------------------------------------
# Check arguments and environment
# Usage: $0 job-id user title copies options [file]
#
## CUPS API says there must be an exact number of args 
# If no arguments, device discovery mode
if (!$argv[0]){
        print STDERR ("direct vprn backend \"Unknown\" \"TechnoServ Filter \"\n");
        exit 0;
}

# If too many arguments, send error
if (scalar(@argv) < 5 || scalar(@argv) > 6){
        print STDERR ("Usage: vprn job-id user title copies options [file]\n");
        exit 1;
}

save2log(join('_',@argv)) if  ($LOG);

## get the uri CUPS has
#exit 1 if (!defined $DEVICE_URI);

#--------------------------------------------------------------------------------------------------
#The hard, but fine work :)
# Safe create temp file
$FH_TEMP = File::Temp->new( TEMPLATE => 'cups_jobXXXXX',
                                DIR => $SPOOL,
                                SUFFIX => '.~tmp');

# If we were called with 6 arguments, read from STDIN to a tempfile:
if (!defined $printFile){
    $FH_TEMP = File::Temp->new( TEMPLATE => 'cups_jobXXXXX',
                                DIR => $SPOOL,
                                SUFFIX => '.~tmp');
    copy(\*STDIN,$FH_TEMP) or die "Copy failed: $!"; 
}else{
    $FH_TEMP = $printFile;
}

#???????? ?????? ?? ??????
save2log ("$VPRINTER $FH_TEMP \n") if  ($LOG);
#my $result =
`$VPRINTER $FH_TEMP`;
exit 0;
#exit $result;

#-----------------------------------------------------------------------------------
sub datetime2string{
        #Arg:nothing
        #Returns: date time string
        my @months_names=("JANUARY","FEBRUARY","MARCH","APRIL","MAY","JUNE","JULY","AUGUST","SEPTEMBER","OCTOBER","NOVEMBER","DECEMBER");
        
    my $tm = localtime();
    my ($day,$month,$year,$hh,$mm) = ($tm->mday,$tm->mon,$tm->year,$tm->hour,$tm->min);
    $year+=1900;
    if (length($day) == 1){
        $day='0'.$day;
    }
    if (length($hh) == 1){
        $hh='0'.$hh;
    }
    if (length($mm) == 1){
        $mm='0'.$mm;
    }
    my $date =join('/',$year,$months_names[$month],$day);
    my $time =join(':',$hh,$mm);
    return join ('_',$date,$time); 
}

sub save2log{
        #Arg: info_str
        #Returns: nothing
        my($info_str)= @_;
        open (LOG,">> $LOG_FILE") or die "can't open file $LOG_FILE: $!";
        print LOG "--------------------------Date ", datetime2string()," ---------------------\n";
        print LOG $info_str,"\n";
        print LOG "---------------------------------------------------------------------------\n";
        close (LOG);
}