#! /usr/bin/perl
use strict;
use Time::Local;
use Math::BigFloat;
Math::BigFloat->precision(0);

my $inpath = "/tmp/IN";
my @inputfiles = &GetINDirFiles($inpath);

print "@inputfiles \n";
sub GetINDirFiles {
    my ($path) = @_;
my $min_age = 0.25/24;
    opendir DIR, $path or die $!;
#       my @files = readdir DIR;
   my @files=grep {!/\_ACK|_\d+_\d+\.xml/ && (&UTCtoLocal("$path/$_")) } readdir DIR;
        closedir DIR;

    return(@files);
}

sub UTCtoLocal {

my ($filetoread) = @_;
open (INFILE, "<$filetoread") or die "$!";
my @ActTime = map {/"(.*?)"/} grep {/MessageDateTime/} (<INFILE>);
my $iso_time = join("", @ActTime);
my $expected_epoch = 1 * 60 * 60 + 1 * 60 + 1;
my ($date, $time) = split /T/ => $iso_time;
my ($year, $mon, $mday) = split /-/ => $date;
my $currenttime = time; # get current time from system (epoch time)
my $threshold = 900;

$year -= 1900;
$mon -= 1;
my ($hour, $min, $sec) = split /:/ => $time;

my $nsec = chop($sec);
my $mtime = timegm($sec, $min, $hour, $mday, $mon, $year);
my $diff = ($currenttime - $mtime);
if ($diff > $threshold) {
return ($filetoread);
        }
}