use Modern::Perl;

use Number::Range;
use Text::CSV::Auto qw( process_csv );
use Data::Dump qw /dump/;

my $debug = 0;
my %database;
process_csv('./primary.txt',
    sub {
        my $row = shift;
        push @{$database{$row->{name}}}, [$row->{start}, $row->{end}];
    }
);
say dump(\%database) if $debug;

analyse ('./secondary_1.txt');
analyse ('./secondary_2.txt');

sub analyse {
    my $file = shift;
    say "--Checking $file--";
    my %data;
    process_csv($file,
        sub {
            my $row = shift;
            push @{$data{$row->{name}}}, [$row->{start}, $row->{end}];
        }
    );
    say dump(\%data) if $debug;
    for my $name (sort keys %database) {
        unless ($data{$name}) {
            for my $range_ref (@{$database{$name}}) {
                say "$name: $range_ref->[0] $range_ref->[1]  absent 0 0";
            }
            next;
        }
        for my $range_ref (@{$database{$name}}) {
            print "$name: $range_ref->[0] $range_ref->[1] ";
            my $range = Number::Range->new($range_ref->[0] .. $range_ref->[1]);
            for my $testrange_ref (@{$data{$name}}) {
                if ($range->inrange(@$testrange_ref)) {
                    print "present $testrange_ref->[0] $testrange_ref->[1] ";
                }
                else {
                    print "absent 0 0 ";
                }
            }
            print "\n";
        }
    }
    say '------------------------------';
}

##</code><code>##

--Checking ./secondary_1.txt--
Alex: 3 44 absent 0 0 absent 0 0 
Alex: 124 175 absent 0 0 present 134 155 
Barry: 2 44 present 12 24 
Drew: 9 43  absent 0 0
James: 6 45 absent 0 0 
------------------------------
--Checking ./secondary_2.txt--
Alex: 3 44 absent 0 0 
Alex: 124 175 present 154 174 
Barry: 2 44  absent 0 0
Drew: 9 43 present 19 54 absent 0 0 
James: 6 45 present 29 45 
------------------------------