#!/usr/bin/perl
#
#
#

use strict;
use warnings;
use Anvil::Tools;

$| = 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 remote_call
{
	my $parameters = shift;
	my $debug      = $parameters->{debug};

	my @call_result = $anvil->Remote->call($parameters);
	my ($output, $error, $return_code) = @call_result;
	$anvil->Log->variables({ source => $THIS_FILE, line => __LINE__, level => $debug, list => {
		%$parameters,
		output      => $output,
		error       => $error,
		return_code => $return_code,
	} });

	return @call_result;
}

sub system_call
{
	my $parameters = shift;
	my $debug      = $parameters->{debug};

	my @call_result = $anvil->System->call($parameters);
	my ($output, $return_code) = @call_result;
	$anvil->Log->variables({ source => $THIS_FILE, line => __LINE__, level => $debug, list => {
		%$parameters,
		output      => $output,
		return_code => $return_code,
	} });

	return @call_result;
}

sub get_remote_call_requirements
{
	my $parameters = shift;
	my $host_uuid  = $parameters->{host_uuid};
	my $debug      = $parameters->{debug};

	my $query = "
SELECT ip_address_address
FROM ip_addresses
WHERE ip_address_gateway <> ''
	AND ip_address_note <> 'DELETED'
	AND ip_address_host_uuid = ".$anvil->Database->quote($host_uuid)."
;";

	my $host_ip_address = $anvil->Database->query({ query => $query, source => $THIS_FILE, line => __LINE__, debug => $debug })->[0]->[0];
	$anvil->Log->variables({ source => $THIS_FILE, line => __LINE__, level => $debug, list => {
		host_uuid       => $host_uuid,
		host_ip_address => $host_ip_address,
	} });

	return $host_ip_address;
}

sub get_server_screenshot
{
	my $parameters  = shift;
	my $server_uuid = $parameters->{server_uuid};
	my $debug       = $parameters->{debug};

	my $resize_args = defined $parameters->{resize_args} ? $parameters->{resize_args} : '';

	my $sh_domstate = $anvil->data->{path}{exe}{setsid}." --wait ".$anvil->data->{path}{exe}{virsh}." domstate --domain ".$server_uuid;
	my ($sh_domstate_output, $sh_domstate_return_code) = system_call({ debug => $debug, shell_call => $sh_domstate });

	if ( ($sh_domstate_return_code != 0) || ($sh_domstate_output ne "running") )
	{
		return "";
	}

	my $shell_call = $anvil->data->{path}{exe}{setsid}." --wait ".$anvil->data->{path}{exe}{virsh}." --quiet screenshot --domain ".$server_uuid." --file ".$anvil->data->{path}{devices}{stdout};

	if ($resize_args =~ /^\d+x\d+$/)
	{
		my ($resize_x, $resize_y) = split(/x/ , $resize_args);

		$shell_call .= " | ".$anvil->data->{path}{exe}{pamscale}." -quiet -xyfit ".$resize_x." ".$resize_y;
	}

	$shell_call .= " | ".$anvil->data->{path}{exe}{pamtopng}." -quiet | ".$anvil->data->{path}{exe}{base64}." --wrap 0";

	my ($output, $return_code) = system_call({ debug => $debug, shell_call => $shell_call });

	return $return_code == 0 ? $output : "";
}

$anvil->Get->switches;
my $debug = $anvil->data->{switches}{debug};

$anvil->Database->connect;
$anvil->Log->entry({ source => $THIS_FILE, line => __LINE__, level => $debug, 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 });
}

# Try to get a job UUID if not given.
if (not $anvil->data->{switches}{'job-uuid'})
{
	$anvil->data->{switches}{'job-uuid'} = $anvil->Job->get_job_uuid({ program => $THIS_FILE });
	$anvil->Log->variables({ source => $THIS_FILE, line => __LINE__, level => $debug, list => {
		"switches::job-uuid" => $anvil->data->{switches}{'job-uuid'}
	} });
}

# Handle this script as a job when job UUID is provided.
if ($anvil->data->{switches}{'job-uuid'})
{
	$anvil->Job->clear();
	$anvil->Job->get_job_details();
	$anvil->Job->update_progress({
		progress         => 1,
		job_picked_up_by => $$,
		job_picked_up_at => time,
		message          => "message_0263"
	});

	foreach my $line (split/\n/, $anvil->data->{jobs}{job_data})
	{
		if ($line =~ /server-uuid=(.*?)$/)
		{
			$anvil->data->{switches}{'server-uuid'} = $1;
		}

		if ($line =~ /resize=(.*?)$/)
		{
			$anvil->data->{switches}{'resize'} = $1;
		}

		if ($line =~ /request-host-uuid=(.*?)$/)
		{
			$anvil->data->{switches}{'request-host-uuid'} = $1;
		}

		if ($line =~ /out-file-id=(.*?)$/)
		{
			$anvil->data->{switches}{'out-file-id'} = $1;
		}
	}
}

my $server_uuid       = $anvil->data->{switches}{'server-uuid'};
my $resize_args       = $anvil->data->{switches}{resize};
my $request_host_uuid = $anvil->data->{switches}{'request-host-uuid'};
my $job_uuid          = $anvil->data->{switches}{'job-uuid'};
my $out_file_id       = defined $anvil->data->{switches}{'out-file-id'} ? $anvil->data->{switches}{'out-file-id'} : "0";

$anvil->Log->variables({ source => $THIS_FILE, line => __LINE__, level => $debug, list => {
	debug             => $debug,
	job_uuid          => $job_uuid,
	request_host_uuid => $request_host_uuid,
	resize_args       => $resize_args,
	server_uuid       => $server_uuid,
} });

if ($server_uuid)
{
	my $encoded_image = get_server_screenshot({ debug => $debug, server_uuid => $server_uuid, resize_args => $resize_args });

	if ($request_host_uuid)
	{
		my $request_host_ip_address = get_remote_call_requirements({ debug => $debug, host_uuid => $request_host_uuid });
		my $out_file_path           = $anvil->data->{path}{directories}{tmp}."/".$server_uuid."_screenshot_".$out_file_id;
		my $remote_shell_call       = $anvil->data->{path}{exe}{echo}." '".$encoded_image."' 1<>'".$out_file_path."' >'".$out_file_path."'";

		$anvil->Log->variables({ source => $THIS_FILE, line => __LINE__, level => $debug, list => { request_host_ip_address => $request_host_ip_address } });

		remote_call({ debug => $debug, shell_call => $remote_shell_call, target => $request_host_ip_address });

		if (length($encoded_image))
		{
			$anvil->Job->update_progress({ progress => 100, message => "message_0264" });
		}
		else
		{
			$anvil->Job->update_progress({ progress => 100, message => "message_0265" });
			$anvil->nice_exit({ exit_code => 1 });
		}
	}
	else
	{
		print($encoded_image);
	}
}
else
{
	$anvil->Job->update_progress({ progress => 100, message => "message_0266" });
	$anvil->nice_exit({ exit_code => 1 });
}

$anvil->nice_exit({ exit_code => 0 });