#!/usr/bin/perl

use strict;
use warnings;
use Anvil::Tools;
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 db_access
{
	my $parameters  = shift;
	my $db_uuid     = $parameters->{db_uuid};
	my $sql_query   = $parameters->{sql_query};
	my $access_mode = $parameters->{access_mode};

	my $access_parameters = { query => $sql_query, uuid => $db_uuid, source => $THIS_FILE, line => __LINE__ };

	return ($access_mode eq "write")
		? { write_code => $anvil->Database->write($access_parameters) }
		: $anvil->Database->query($access_parameters);
}

$anvil->Get->switches;

$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 });
}

my $db_uuid       = $anvil->data->{switches}{'uuid'};
my $db_sub_name   = defined $anvil->data->{switches}{'sub'} ? $anvil->data->{switches}{'sub'} : "";
my $db_sub_params = defined $anvil->data->{switches}{'sub-params'} ? $anvil->data->{switches}{'sub-params'} : "{}";
my $sql_query     = $anvil->data->{switches}{'query'};
my $access_mode   = defined $anvil->data->{switches}{'mode'} ? $anvil->data->{switches}{'mode'} : "";

if ($sql_query)
{
	my $results = db_access({ db_uuid => $db_uuid, sql_query => $sql_query, access_mode => $access_mode });
	print JSON->new->utf8->encode($results)."\n";
}
elsif ($anvil->Database->can($db_sub_name))
{
    my $decoded_db_sub_params;
    my $is_decode_json_success = eval {
        $decoded_db_sub_params = decode_json($db_sub_params);
    };

    if (not $is_decode_json_success)
    {
        print "error: failed to parse subroutine parameters\n";
        $anvil->nice_exit({ exit_code => 1 });
    }

    my $results = $anvil->Database->${db_sub_name}($decoded_db_sub_params);
    print JSON->new->utf8->encode({ sub_results => $results })."\n";
}
else
{
	print "error: missing switches and perhaps their respective parameters; one of --query or --sub is required\n";
	$anvil->nice_exit({ exit_code => 1 });
}