use HTTP::Tiny;

use JSON::Parse qw(:all);

use List::UtilsBy qw( nsort_by );

my ($api, $api_request, $json, $nodes_in_numbers, $parser, $vnstat_xml, $query, $entry);

my ($rx, $tx, $rx_TiB, $tx_TiB, $rx_TiB_total, $tx_TiB_total, $argument);

my (@nodes_rand, @nodes_sorted);

$api         = HTTP::Tiny->new;

$api_request = $api->get('https://enn.lu/api/export/exit');

$json        = valid_json($api_request->{content});

$json        = parse_json($api_request->{content});

$nodes_in_numbers = scalar @$json;

push @nodes_rand, [$json->[$_]{ip}, $json->[$_]{name}, $json->[$_]{country}] for (0..$nodes_in_numbers -1);

@nodes_sorted = nsort_by { int $_->[0] } @nodes_rand;

format HEAD =

************************************************

************************************************

.

write HEAD;

for (0..$nodes_in_numbers -1) {

    unless ($nodes_sorted[$_][0] == $nodes_sorted[$_ +1][0]) {

            $api_request = $api->get('http://' . $nodes_sorted[$_][1] . '.enn.lu/vnstat.xml');

            $parser      = XML::LibXML->new();

            $vnstat_xml  = $parser->load_xml(string => $api_request->{content});

            $query = '/vnstat/interface/traffic/total';

            foreach $entry ($vnstat_xml->findnodes($query)) {

                    $rx = int $entry->findnodes('./rx');

                    $tx = int $entry->findnodes('./tx');

            }

        ($rx_TiB, $tx_TiB) = ($rx * (9.313 * 1.0E-10), $tx * (9.313 * 10E-10));

        ($rx_TiB, $tx_TiB) = (substr ($rx_TiB, 0, 4), substr ($tx_TiB, 0, 4));

        $rx_TiB_total += $rx_TiB;

        $tx_TiB_total += $tx_TiB;