#!/usr/bin/perl
#
# Prints JSON formatted data reporting the status of shared storage (a.k.a. storage groups/shared VGs)
#

use strict;
use warnings;
use Anvil::Tools;
use Data::Dumper;
use JSON;

$| = 1;

my $THIS_FILE           =  ($0 =~ /^.*\/(.*)$/)[0];
my $running_directory   =  ($0 =~ /^(.*?)\/$THIS_FILE$/)[0];
if (($running_directory =~ /^\./) && ($ENV{PWD}))
{
	$running_directory =~ s/^\./$ENV{PWD}/;
}

my $anvil = Anvil::Tools->new();

sub handle_invalid_uuid
{
	my $parameters = shift;
	my $name       = $parameters->{name};
	my $uuid       = $parameters->{uuid};

	$anvil->Log->entry({
		source    => $THIS_FILE,
		line      => __LINE__,
		level     => 0,
		'print'   => 1,
		priority  => "err",
		key       => "error_0160",
		variables => { name => $name, uuid => $uuid }
	});
	$anvil->nice_exit({ exit_code => 1 });
}

$anvil->Get->switches;

# Temporary; for debugging
$anvil->Log->level({ set => 2 });

$anvil->Database->connect;
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 2, secure => 0, key => "log_0132"});
if (not $anvil->data->{sys}{database}{connections})
{
	# No databases, exit.
	$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 0, 'print' => 1, priority => "err", key => "error_0003"});
	$anvil->nice_exit({exit_code => 1});
}

# Read in any CGI variables, if needed.
$anvil->Get->cgi();

$anvil->Database->get_hosts();
$anvil->Database->get_anvils();

print $anvil->Template->get({file => "shared.html", name => "json_headers", show_name => 0})."\n";

my $anvil_uuid               = exists $anvil->data->{cgi}{anvil_uuid}{value} ? $anvil->data->{cgi}{anvil_uuid}{value} : $anvil->data->{switches}{'anvil-uuid'};
my $anvil_uuid_variable_name = "anvil UUID";

my $response_body = {};

if ($anvil_uuid)
{
	if (exists $anvil->data->{anvils}{anvil_uuid}{$anvil_uuid})
	{
		$anvil->Log->variables({
			source => $THIS_FILE,
			line   => __LINE__,
			level  => 2,
			list   => {
				message    => "Valid ".$anvil_uuid_variable_name." received.",
				anvil_uuid => $anvil_uuid
			}
		});
	}
	else
	{
		handle_invalid_uuid({ name => $anvil_uuid_variable_name, uuid => $anvil_uuid });
	}
}
else
{
	handle_invalid_uuid({ name => $anvil_uuid_variable_name, uuid => $anvil_uuid });
}

print JSON->new->utf8->encode($response_body)."\n";