#!/usr/bin/perl -w
use strict;
use warnings;
use Text::ParseWords;

my $dir = "/home/vlr/archive/";

my $date = "20211201";
chomp($date);

# Check directory for relevant files
opendir(DIR, $dir) or die "Could not open ".$dir."\n";
my @dir = grep(/^USRINF.*.$date.*.1700.txt$/, readdir DIR);
closedir DIR;

my $file = $dir."temp.txt";

open my $FH, '>', $file;
foreach $_(sort @dir){
	my $DFile = $dir.$_;
	print "Processing: ".$DFile."\n";
	# Open Data File and parse each line
	open my $DF, '<', $DFile or die "Can't open $DFile $!";
	foreach $_ (<$DF>){
		chomp( $_ );
		if((length $_ > 0)&&($_ =~ /^\d{15}/)){
			$_ =~ s/\s+/;/g;
			my($imsi,$mdn,$sec) = (quotewords('[\t;]+|,\s', 0, $_))[0,1,3];
			if((($imsi =~ /^\d{15}/)&&($imsi =~ /^(702|310)/))&&(($mdn =~ /^\d{10}/)&&($mdn =~ /^(501)/))){
				print $FH $imsi.",".$mdn.",".$sec."\n";
			}
		}
	}
	close $DF;
}
close $FH;