#!/usr/bin/perl
# 
# This set, clear and report if the host is in mainentance mode or not.
# 
# Examples;
# - Enable  - anvil-maintenance-mode --set 1
# - Disable - anvil-maintenance-mode --set 0
# - Report  - anvil-maintenance-mode
# 
# Exit codes;
# 0 = Normal exit.
# 1 = No database connections available.

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

# Disable buffering
$| = 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({log_level => 2, log_secure => 1});

$anvil->Storage->read_config({file => "/etc/anvil/anvil.conf"});

# Read switches
$anvil->data->{switches}{set} = "";
$anvil->Get->switches;

# Connect to DBs.
$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})
{
	# No databases, exit.
	print $anvil->Words->string({key => "error_0003"})."\n";
	$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 0, secure => 0, key => "error_0003"});
	$anvil->nice_exit({exit_code => 1});
}

my $maintenance_mode = $anvil->System->maintenance_mode({debug => 3});
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { maintenance_mode => $maintenance_mode }});

$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { "switches::set" => $anvil->data->{switches}{set} }});
if ($anvil->data->{switches}{set} eq "1")
{
	# Enable
	if (not $maintenance_mode)
	{
		$maintenance_mode = $anvil->System->maintenance_mode({debug => 3, set => 1});
		$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { maintenance_mode => $maintenance_mode }});
		print $anvil->Words->string({key => "message_0041"})."\n";
	}
	else
	{
		# Was already set, do nothing
		print $anvil->Words->string({key => "message_0042"})."\n";
	}
}
elsif ($anvil->data->{switches}{set} eq "0")
{
	# Disabled
	if ($maintenance_mode)
	{
		$maintenance_mode = $anvil->System->maintenance_mode({debug => 3, set => 0});
		$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { maintenance_mode => $maintenance_mode }});
		print $anvil->Words->string({key => "message_0043"})."\n";
	}
	else
	{
		# Was already disabled, do nothing
		print $anvil->Words->string({key => "message_0044"})."\n";
	}
}
elsif ($anvil->data->{switches}{set})
{
	# Bad call
	print $anvil->Words->string({key => "message_0045", variables => { program => $THIS_FILE }})."\n";
}

# Get the current state

if ($maintenance_mode)
{
	# Report that we're in mainteance mode
	print $anvil->Words->string({key => "message_0046"})."\n";
}
else
{
	# Report that we're not.
	print $anvil->Words->string({key => "message_0047"})."\n";
}

# We're done
$anvil->nice_exit({exit_code => 0});