#!/usr/bin/perl

use warnings; use strict;

$[ = 1;
$\ = "\n";

my ($last_xdrfile,$xline);
open CDR_DETAILS, "cdr_details.1" or die "couldn't open cdr_details.1: $!\n";
open CDR_TDM, ">cdr_tdm.csv" or die "couldn't write cdr_tdm.csv: $!\n";
while (<CDR_DETAILS>) {
    chomp;
    my ($cdrdate,$cdrtime,$cdrcli1,$cdrcli2,$xdrfile) = (split /,/)[1,2,3,7,8];
    $cdrtime += 0;
    print "Record number: $.";
    print "CDRDATE: $cdrdate";
    print "CDRTIME: $cdrtime";
    print "CLI1: $cdrcli1";
    print "CLI2: $cdrcli2";
    if ($last_xdrfile ne $xdrfile) {
       print "$xdrfile != $last_xdrfile, opening file!";
       open(XDR,$xdrfile) or die "couldn't open $xdrfile: $!\n";
       chomp($xline = <XDR>);
    }
    $last_xdrfile = $xdrfile;
    while (defined $xline) {
        my ($xdrdate,$xdrtime,$xdrcli1,$xdrcli2)=(split /,/, $xline)[2,3,5,7];
        last if $xdrdate gt $cdrdate;
        last if $xdrtime gt $cdrtime;
        next unless $xdrdate eq $cdrdate && $xdrtime eq $cdrtime &&
                    $xdrcli1 eq $cdrcli1 && $xdrcli1 eq $cdrcli2;

        print CDR_TDM $xline;
    } continue { chomp($xline = <XDR>) }
}