#!/usr/bin/perl
# 
# This is called when the local network needs to be reconfigured.
# 
# Exit codes;
# 0 = Normal exit.
# 

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

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->Log->level({set => 2});
$anvil->Log->secure({set => 0});

# Read switches
$anvil->Get->switches;

# Paths
$anvil->Storage->read_config({file => $anvil->data->{path}{config}{'anvil.conf'}});

# Connect
my $connections = $anvil->Database->connect({
	sql_file   => $anvil->data->{sys}{database}{schema},
	test_table => "network_interfaces", 
});

print $THIS_FILE." ".__LINE__."; connections: [".$connections."]\n";
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 3, key => "log_0132", variables => { connections => $connections }});
if (not $connections)
{
	# No databases, exit.
	print $anvil->Words->string({key => "striker_error_0003"});
	$anvil->nice_exit({exit_code => 2});
}

pickup_job_details($anvil);

reconfigure_network($anvil);

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

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

# This does the work of reconfiguring the network
sub reconfigure_network
{
	my ($anvil) = @_;
	
	my $prefix          = $anvil->data->{variables}{form}{config_step1}{prefix}{value};
	my $sequence        = $anvil->data->{variables}{form}{config_step1}{sequence}{value};
	my $domain          = $anvil->data->{variables}{form}{config_step1}{domain}{value};
	my $organization    = $anvil->data->{variables}{form}{config_step1}{organization}{value};
	my $bcn_count       = 1;	# TODO: This should be coming from the form, even though it's only '1' for now.
	my $ifn_count       = $anvil->data->{variables}{form}{config_step1}{ifn_count}{value};
	my $new_hostname    = $prefix."-striker".sprintf("%02d", $sequence).".".$domain;
	my $pretty_hostname = $organization." - Striker ".sprintf("%02d", $sequence);
	$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { 
		prefix          => $prefix, 
		sequence        => $sequence,
		domain          => $domain, 
		organization    => $organization, 
		bcn_count       => $bcn_count, 
		ifn_count       => $ifn_count, 
		new_hostname    => $new_hostname, 
		pretty_hostname => $pretty_hostname, 
	}});
	
	# Set the hostname
	my $hostnam = $anvil->System->hostname({set => $new_hostname, pretty => $pretty_hostname, debug => 2});
	if ($hostname eq $new_hostname)
	{
		# Success
	}
	else
	{
		# Failed
	}
=cut
	print Dumper $anvil->data->{variables};

$VAR1 = {
          'form' => {
                      'config_step2' => {
                                          'bcn1_subnet' => {
                                                             'value' => '255.255.0.0'
                                                           },
                                          'ifn1_iface1_mac' => {
                                                                 'value' => '52:54:00:dd:ad:8a'
                                                               },
                                          'dns' => {
                                                     'value' => '8.8.8.8, 8.8.4.4'
                                                   },
                                          'gateway' => {
                                                         'value' => '192.168.122.1'
                                                       },
                                          'bcn1_iface1_mac' => {
                                                                 'value' => '52:54:00:6b:35:bc'
                                                               },
                                          'striker_password' => {
                                                                  'value' => 'super secret password'
                                                                },
                                          'hostname' => {
                                                          'value' => 'an-striker01.alteeve.com'
                                                        },
                                          'gateway_interface' => {
                                                                   'value' => 'ifn1'
                                                                 },
                                          'ifn1_subnet' => {
                                                             'value' => '255.255.0.0'
                                                           },
                                          'ifn1_ip' => {
                                                         'value' => '192.168.122.201'
                                                       },
                                          'bcn1_ip' => {
                                                         'value' => '10.1.4.1'
                                                       },
                                          'bcn1_iface2_mac' => {
                                                                 'value' => '52:54:00:5d:5d:3d'
                                                               },
                                          'ifn1_iface2_mac' => {
                                                                 'value' => '52:54:00:1e:36:03'
                                                               },
                                          'striker_user' => {
                                                              'value' => 'striker'
                                                            }
                                        },
        };
=cut

	return(0);
}

# This will pick up the job, or exit.
sub pickup_job_details
{
	my ($anvil) = @_;
	
	# If any job said it was picked up, and the "job_picked_up_by" PID doesn't exist, take it and update
	# it.
	
	my $query = "
SELECT 
    job_uuid, 
    job_command, 
    job_data, 
    job_picked_up_by, 
    job_picked_up_at, 
    job_updated, 
    job_progress 
FROM 
    jobs 
WHERE 
    job_name = 'configure::network' 
AND 
    job_progress != 100 
AND 
    job_host_uuid = ".$anvil->data->{sys}{use_db_fh}->quote($anvil->Get->host_uuid)."
LIMIT 1;";
	$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { query => $query }});
	
	my $results = $anvil->Database->query({query => $query, source => $THIS_FILE, line => __LINE__});
	my $count   = @{$results};
	$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { 
		results => $results, 
		count   => $count,
	}});
	my $job_uuid         =         $results->[0]->[0];
	my $job_command      =         $results->[0]->[1];
	my $job_data         = defined $results->[0]->[2] ? $results->[0]->[2] : "";
	my $job_picked_up_by =         $results->[0]->[3];
	my $job_picked_up_at =         $results->[0]->[4]; 
	my $job_updated      =         $results->[0]->[5];
	my $job_progress     =         $results->[0]->[6];
	$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { 
		job_uuid         => $job_uuid,
		job_command      => $job_command,
		job_data         => $job_data,
		job_picked_up_by => $job_picked_up_by,
		job_picked_up_at => $job_picked_up_at,
		job_updated      => $job_updated,
		job_progress     => $job_progress,
	}});
	
	# See if the job was picked up by another running instance.
	if ($job_picked_up_by)
	{
		# Check if the PID is still active.
		$anvil->System->pids({ignore_me => 1});
		
		# Is the PID that picked up the job still alive?
		if (exists $anvil->{pids}{$job_picked_up_by})
		{
			print Dumper $anvil->{pids}{$job_picked_up_by};
			$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 1, key => "log_0146", variables => { pid => $job_picked_up_by }});
			$anvil->nice_exit({code => 1});
		}
		else
		{
			# The previous job is gone, we'll take this over.
			$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 1, key => "log_0147", variables => { 
				pid     => $job_picked_up_by,
				percent => $job_progress, 
			}});
		}
	}
	
	# This will store the variables from the database
	$anvil->data->{variables} = {};
	
	# If we're still alive, pick up the details.
	$results = "";
	$count   = "";
	$query   = "
SELECT 
    variable_name, 
    variable_value 
FROM 
    variables 
WHERE 
    variable_name 
LIKE 
    'form::config_step%' 
AND 
    variable_source_table = 'hosts' 
AND 
    variable_source_uuid = ".$anvil->data->{sys}{use_db_fh}->quote($anvil->Get->host_uuid)."
;";
	$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { query => $query }});
	
	$results = $anvil->Database->query({query => $query, source => $THIS_FILE, line => __LINE__});
	$count   = @{$results};
	$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { 
		results => $results, 
		count   => $count,
	}});
	foreach my $row (@{$results})
	{
		my $this_variable =         $row->[0];
		my $this_value    = defined $row->[1] ? $row->[1] : "";
		$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { 
			this_variable => $this_variable, 
			this_value    => $this_value, 
		}});
		
		$anvil->_make_hash_reference($anvil->data->{variables}, $this_variable, $this_value);
	}
	
	# Record that we've picked up this job.
	$query = "UPDATE jobs SET job_picked_up_by = ".$$.", job_progress = 1, job_picked_up_at = ".time." WHERE job_uuid = ".$anvil->data->{sys}{use_db_fh}->quote($job_uuid).";";
	$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { query => $query }});
	
	$anvil->Database->write({query => $query, source => $THIS_FILE, line => __LINE__});
	
	return(0);
}