#!/usr/bin/perl
#
#  rhrdweb
#
#  Copyright (C) 2016 Christian Pointner <equinox@helsinki.at>
#
#  This file is part of rhrdweb.
#
#  rhrdweb is free software: you can redistribute it and/or modify
#  it under the terms of the GNU Affero General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  any later version.
#
#  rhrdweb is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU Affero General Public License for more details.
#
#  You should have received a copy of the GNU Affero General Public License
#  along with rhrdweb. If not, see <http://www.gnu.org/licenses/>.
#

use strict;
use RHRD::rddb;
use JSON::MaybeXS;
use IO::Socket;
use Socket qw(SOCK_STREAM getaddrinfo);

my $status = 'ERROR';
my $errorstring = 'unknown';
my $responsecode = 500;
my $system = 'unknown';


my %hints = (socktype => SOCK_STREAM);
my ($err, @res) = getaddrinfo("rhctl.helsinki.at", "2345", \%hints);
if($err)  {
  $errorstring = "Cannot getaddrinfo - $err";
} else {
  my $sock;
  foreach my $ai (@res) {
    my $candidate = IO::Socket->new();
    $candidate->socket($ai->{family}, $ai->{socktype}, $ai->{protocol})
      or next;
    $candidate->connect($ai->{addr})
      or next;
    $sock = $candidate;
    last;
  }
  if($sock) {
    $system = <$sock>;
    $system =~ s/\s+$//;
    $status = 'OK';
    $errorstring = 'success';
    $responsecode = 200;
    close($sock);
  } else {
    $errorstring = "Cannot connect to rhctl.helsinki.at:2345";
  }
}

my %answer;
$answer{'status'} = $status;
$answer{'errorstring'} = $errorstring;
$answer{'system'} = $system;

my $j = JSON::MaybeXS->new(utf8 => 0);

print "Content-type: application/json; charset=UTF-8\n";
print "Status: $responsecode\n\n";
print $j->encode(\%answer);