#!/usr/bin/perl
# 
# This does shutdown-time tasks; migrate or stop servers, withdraw and power off the host.
# 
# Exit codes;
# 0 = Normal exit.
# 1 = Any problem that causes an early exit.
# 
# TODO: 
# 

use strict;
use warnings;
use Anvil::Tools;
require POSIX;

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

# Turn off buffering so that the pinwheel will display while waiting for the SSH call(s) to complete.
$| = 1;

my $anvil = Anvil::Tools->new();
$anvil->Get->switches;
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 2, secure => 0, key => "log_0115", variables => { program => $THIS_FILE }});

# Make sure we're running as 'root'
# $< == real UID, $> == effective UID
if (($< != 0) && ($> != 0))
{
	# Not root
	print $anvil->Words->string({key => "error_0005"})."\n";
	$anvil->nice_exit({exit_code => 1});
}

# Connect to the database(s). If we have no connections, we'll proceed anyway as one of the 'run_once' tasks
# is to setup the database server.
$anvil->Database->connect();
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 2, secure => 0, key => "log_0132"});

# If I have no databases, sleep until I do
if (not $anvil->data->{sys}{database}{connections})
{
	# If this is a dashboard, try to configure and then connect to the local database. If this isn't a 
	# Wait until we have one.
	$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, secure => 0, key => "error_0075"});
	
	until($anvil->data->{sys}{database}{connections})
	{
		sleep 10;
		
		$anvil->refresh();
		$anvil->Database->connect();
		$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 3, secure => 0, key => "log_0132"});
		if (not $anvil->data->{sys}{database}{connections})
		{
			# Keep waiting
			$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 0, level => 3, secure => 0, key => "log_0439"});
		}
	}
}


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

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# Functions                                                                                                 #
#############################################################################################################