<?php

/*
 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
 * Copyright (C) 2006-2009 Dan Fuhry
 * Installation package
 * cli-core.php - CLI installation wizard/core
 *
 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
 * 
 * Thanks to Stephan for helping out with l10n in the installer (his work is in includes/stages/*.php).
 */

require(dirname(__FILE__) . '/common.php');
if ( !defined('ENANO_CLI') )
{
	$ui = new Enano_Installer_UI('Enano installation', false);
	$ui->set_visible_stage($ui->add_stage('Error', true));

	$ui->step = 'Access denied';  
	$ui->show_header();
	echo '<h2>CLI only</h2>
				<p>This script must be run from the command line.</p>';
	$ui->show_footer();
	exit;
}

if ( defined('ENANO_INSTALLED') )
{
	// start up the API to let it error out if something's wrong
	require(ENANO_ROOT . '/includes/common.php');
	
	installer_fail('Enano is already installed. Uninstall it by deleting config.php and creating a blank file called config.new.php.');
}

// parse command line args
foreach ( array('silent', 'driver', 'dbhost', 'dbport', 'dbuser', 'dbpasswd', 'dbname', 'db_prefix', 'user', 'pass', 'email', 'sitename', 'sitedesc', 'copyright', 'urlscheme', 'lang_id', 'scriptpath') as $var )
{
	if ( !isset($$var) )
	{
		$$var = false;
	}
}

for ( $i = 1; $i < count($argv); $i++ )
{
	switch($argv[$i])
	{
		case '-q':
			$silent = true;
			break;
		case '--db-driver':
		case '-b':
			$driver = @$argv[++$i];
			break;
		case '--db-host':
		case '-h':
			$dbhost = @$argv[++$i];
			break;
		case '--db-port':
		case '-o':
			$dbport = @$argv[++$i];
			break;
		case '--db-user':
		case '-u':
			$dbuser = @$argv[++$i];
			break;
		case '--db-pass':
		case '-p':
			$dbpasswd = @$argv[++$i];
			break;
		case '--db-name':
		case '-d':
			$dbname = @$argv[++$i];
			break;
		case '--table-prefix':
		case '-t':
			$db_prefix = @$argv[++$i];
			break;
		case '--admin-user':
		case '-a':
			$user = @$argv[++$i];
			break;
		case '--admin-pass':
		case '-w':
			$pass = @$argv[++$i];
			break;
		case '--admin-email':
		case '-e':
			$email = @$argv[++$i];
			break;
		case '--site-name':
		case '-n':
			$sitename = @$argv[++$i];
			break;
		case '--site-desc':
		case '-s':
			$sitedesc = @$argv[++$i];
			break;
		case '--copyright':
		case '-c':
			$copyright = @$argv[++$i];
			break;
		case '--url-scheme':
		case '-r':
			$urlscheme_temp = @$argv[++$i];
			if ( in_array($urlscheme_temp, array('standard', 'short', 'rewrite', 'tiny')) )
				$urlscheme = $urlscheme_temp;
			break;
		case '--language':
		case '-l':
			$lang_id = @$argv[++$i];
			break;
		case '-i':
		case '--scriptpath':
			$scriptpath = @$argv[++$i];
			break;
		default:
			$vers = installer_enano_version();
			echo <<<EOF
Enano CMS v$vers - CLI Installer
Usage: {$argv[0]} [-q] [-b driver] [-h host] [-u username] [-p password]
									[-d database] [-a adminuser] [-w adminpass] [-e email]
All arguments are optional; missing information will be prompted for.
	-q                Quiet mode (minimal output)
	-b, --db-driver   Database driver (mysql or postgresql)
	-h, --db-host     Hostname of database server
	-o, --db-port     TCP port on which to connect to database server
	-u, --db-user     Username to use on database server
	-p, --db-pass     Password to use on database server
	-d, --db-name     Name of database
	-a, --admin-user  Administrator username
	-w, --admin-pass  Administrator password
	-e, --admin-email Administrator e-mail address
	-n, --site-name   Name of site
	-s, --site-desc   *SHORT* Description of site
	-c, --copyright   Copyright notice shown on pages
	-r, --url-scheme  URL scheme (standard, short, rewrite, or tiny)
	-l, --language    Language to be used on site and in installer
	-i, --scriptpath  Where Enano is relative to your website root (no trailing
										slash)


EOF;
			exit(1);
			break;
	}
}

if ( $silent )
{
	define('ENANO_LIBINSTALL_SILENT', '');
}

##
## PHP VERSION CHECK
##

if ( version_compare(PHP_VERSION, '5.0.0', '<' ) )
{
	if ( !$silent )
	{
		echo "\x1B[1mWelcome to the \x1B[34mEnano\x1B[0m CMS\x1B[1m installation wizard.\x1B[0m\n";
		echo "Installing Enano version \x1B[1m" . installer_enano_version() . "\x1B[0m on PHP " . PHP_VERSION . "\n";
	}
	installer_fail('Your version of PHP (' . PHP_VERSION . ') doesn\'t meet Enano requirements (5.0.0)');
}

##
## LANGUAGE STARTUP
##

// Include language lib and additional PHP5-only JSON functions
require_once( ENANO_ROOT . '/includes/json2.php' );
require_once( ENANO_ROOT . '/includes/lang.php' );

// Determine language ID to use
$langids = array_keys($languages);
if ( $silent )
{
	if ( !in_array($lang_id, $langids ) )
		$lang_id = $langids[0];
}
else if ( !in_array($lang_id, $langids) )
{
	echo "\x1B[1mPlease select a language.\x1B[0m\n";
	echo "\x1B[32mAvailable languages:\x1B[0m\n";
	foreach ( $languages as $id => $metadata )
	{
		$id_spaced = $id;
		while ( strlen($id_spaced) < 10 )
			$id_spaced = "$id_spaced ";
		echo "  \x1B[1;34m$id_spaced\x1B[0m {$metadata['name']} ({$metadata['name_eng']})\n";
	}
	while ( !in_array($lang_id, $langids) )
	{
		$lang_id = cli_prompt('Language: ', $langids[0]);
	}
}

// We have a language ID - init language
$language_dir = $languages[$lang_id]['dir'];

// Initialize language support
$lang = new Language($lang_id);
$lang->load_file(ENANO_ROOT . '/language/' . $language_dir . '/install.json');

##
## WELCOME MESSAGE
##

if ( !$silent )
{
	echo parse_shellcolor_string($lang->get('cli_welcome_line1'));
	echo parse_shellcolor_string($lang->get('cli_welcome_line2', array('enano_version' => installer_enano_version(), 'php_version' => PHP_VERSION)));
}

$defaults = array(
	'driver'  => 'mysql',
	'dbhost'    => 'localhost',
	'dbport'    => 3306,
	'dbuser'    => false,
	'dbpasswd'  => false,
	'dbname'    => false,
	'db_prefix'    => '',
	'user'      => 'admin',
	'pass'      => false,
	'email'     => false,
	'sitename'  => $lang->get('cli_default_site_name'),
	'sitedesc'  => $lang->get('cli_default_site_desc'),
	'copyright' => $lang->get('cli_default_copyright', array('year' => date('Y'))),
	'urlscheme' => 'standard',
	'scriptpath'=> '/enano'
);

$terms = array(
	'driver'  => $lang->get('cli_prompt_driver'),
	'dbhost'    => $lang->get('cli_prompt_dbhost'),
	'dbport'    => $lang->get('cli_prompt_dbport'),
	'dbuser'    => $lang->get('cli_prompt_dbuser'),
	'dbpasswd'  => $lang->get('cli_prompt_dbpasswd'),
	'dbname'    => $lang->get('cli_prompt_dbname'),
	'db_prefix'    => $lang->get('cli_prompt_db_prefix'),
	'user'      => $lang->get('cli_prompt_user'),
	'pass'      => $lang->get('cli_prompt_pass'),
	'email'     => $lang->get('cli_prompt_email'),
	'sitename'  => $lang->get('cli_prompt_sitename'),
	'sitedesc'  => $lang->get('cli_prompt_sitedesc'),
	'copyright' => $lang->get('cli_prompt_copyright'),
	'urlscheme' => $lang->get('cli_prompt_urlscheme'),
	'scriptpath'=> $lang->get('cli_prompt_scriptpath')
);

$defaults['dbport'] = ( strtolower($driver) == 'postgresql' ) ? 5432 : 3306;

foreach ( array('driver', 'dbhost', 'dbport', 'dbuser', 'dbpasswd', 'dbname', 'db_prefix', 'scriptpath', 'user', 'pass', 'email', 'sitename', 'sitedesc', 'copyright', 'urlscheme') as $var )
{
	if ( empty($$var) )
	{
		switch($var)
		{
			default:
				$$var = cli_prompt($terms[$var], $defaults[$var]);
				break;
			case 'driver':
				$$var = cli_prompt($terms[$var], $defaults[$var]);
				$defaults['dbport'] = ( strtolower($driver) == 'postgresql' ) ? 5432 : 3306;
				break;
			case 'pass':
			case 'dbpasswd':
				if ( @file_exists('/bin/stty') && @is_executable('/bin/stty') )
				{
					exec('/bin/stty -echo');
					while ( true )
					{
						$$var = cli_prompt($terms[$var], $defaults[$var]);
						echo "\n";
						$confirm = cli_prompt($lang->get('cli_prompt_confirm'), $defaults[$var]);
						echo "\n";
						if ( $$var === $confirm )
							break;
						else
							echo parse_shellcolor_string($lang->get('cli_err_pass_no_match'));
					}
					exec('/bin/stty echo');
				}
				else
				{
					$$var = cli_prompt("{$terms[$var]} " . $lang->get('cli_msg_echo_warning'), $defaults[$var]);
				}
				break;
			case 'urlscheme':
				$temp = '';
				while ( !in_array($temp, array('standard', 'short', 'rewrite', 'tiny')) )
				{
					$temp = cli_prompt($terms[$var], $defaults[$var]);
				}
				$$var = $temp;
				break;
			case 'db_prefix':
				while ( !preg_match('/^[a-z0-9_]*$/', $$var) )
				{
					$$var = cli_prompt($terms[$var], $defaults[$var]);
				}
				break;
			case 'dbport':
				$$var = cli_prompt($terms[$var], strval($defaults[$var]));
				while ( !preg_match('/^[0-9]*$/', $$var) )
				{
					$$var = cli_prompt($terms[$var], $defaults[$var]);
				}
				$$var = intval($$var);
				break;
		}
	}
}

##
## DB TEST
##

require( ENANO_ROOT . '/includes/dbal.php' );
require( ENANO_ROOT . '/includes/sql_parse.php' );
$dbal = new $driver();

if ( !$silent )
	echo parse_shellcolor_string($lang->get('cli_msg_testing_db'));

$result = $dbal->connect(true, $dbhost, $dbuser, $dbpasswd, $dbname, $dbport);
if ( !$result )
{
	if ( !$silent )
	{
		echo parse_shellcolor_string($lang->get('cli_test_fail')) . "\n";
		echo "[$driver] " . $dbal->sql_error() . "\n";
	}
	installer_fail($lang->get('cli_err_db_connect_fail'));
}

if ( !$silent )
	echo parse_shellcolor_string($lang->get('cli_test_pass')) . "\n";

##
## SERVER REQUIREMENTS
##

if ( !$silent )
{
	echo parse_shellcolor_string($lang->get('cli_stage_sysreqs'));
}

$failed = false;
$warnings = array();

// Test: PHP
if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_php') . ': ';
if ( version_compare(PHP_VERSION, '5.2.0', '>=') )
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_pass')) . "\n";
}
else if ( version_compare(PHP_VERSION, '5.0.0', '>=') )
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_vwarn')) . "\n";
	$warnings[] = $lang->get('sysreqs_req_help_php', array('php_version' => PHP_VERSION));
}
else
{
	$failed = true;
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_fail')) . "\n";
}

// Test: MySQL
if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_mysql') . ': ';
$req_mysql = function_exists('mysql_connect');
if ( $req_mysql )
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_pass')) . "\n";
	$have_dbms = true;
}
else
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_fail')) . "\n";
}

// Test: PostgreSQL
if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_postgresql') . ': ';
$req_pgsql = function_exists('pg_connect');
if ( $req_pgsql )
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_pass')) . "\n";
	$have_dbms = true;
}
else
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_fail')) . "\n";
}

if ( !$have_dbms )
	$failed = true;

// Test: Safe Mode
if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_safemode') . ': ';
$req_safemode = !intval(@ini_get('safe_mode'));
if ( !$req_safemode )
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_fail')) . "\n";
	$warnings[] = $lang->get('sysreqs_req_help_safemode');
	$failed = true;
}
else
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_pass')) . "\n";
}

// Test: File uploads
if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_uploads') . ': ';
$req_uploads = intval(@ini_get('file_uploads'));
if ( $req_uploads )
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_pass')) . "\n";
}
else
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_warn')) . "\n";
}

// Test: ctype validation
if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_ctype') . ': ';
$req_ctype = function_exists('ctype_digit');
if ( $req_ctype )
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_pass')) . "\n";
}
else
{
	if ( !$silent ) echo parse_shellcolor_string($lang->get('cli_test_fail')) . "\n";
	$failed = true;
}

// Test: crypto
$crypto_backend = install_get_crypto_backend();
if ( !$silent )
{
	echo '  ' . $lang->get('sysreqs_req_crypto') . ': ';
	switch($crypto_backend)
	{
		case 'bcmath':
			echo parse_shellcolor_string($lang->get('cli_test_warn') . " [<c 0;33>" . $lang->get("sysreqs_req_{$crypto_backend}") . "</c>]") . "\n";
			$warnings[] = $lang->get('sysreqs_req_help_crypto_bcmath');
			break;
		case 'none':
			echo parse_shellcolor_string($lang->get('cli_test_warn') . " [<c 0;31>" . $lang->get("sysreqs_req_notfound") . "</c>]") . "\n";
			$warnings[] = $lang->get('sysreqs_req_help_crypto_none');
			break;
		default:
			echo parse_shellcolor_string($lang->get('cli_test_pass') . " [<c 0;32>" . $lang->get("sysreqs_req_{$crypto_backend}") . "</c>]") . "\n";
			break;
	}
}

// Write tests
$req_config_w = write_test('config.new.php');
$req_htaccess_w = write_test('.htaccess.new');
$req_files_w = write_test('files');
$req_cache_w = write_test('cache');

if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_config_writable') . ': ' . parse_shellcolor_string($lang->get($req_config_w ? 'cli_test_pass' : 'cli_test_fail')) . "\n";
if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_htaccess_writable') . ': ' . parse_shellcolor_string($lang->get($req_htaccess_w ? 'cli_test_pass' : 'cli_test_warn')) . "\n";
if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_files_writable') . ': ' . parse_shellcolor_string($lang->get($req_files_w ? 'cli_test_pass' : 'cli_test_warn')) . "\n";
if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_cache_writable') . ': ' . parse_shellcolor_string($lang->get($req_cache_w ? 'cli_test_pass' : 'cli_test_warn')) . "\n";

if ( !$req_config_w || !$req_htaccess_w || !$req_files_w || !$req_cache_w )
	$warnings[] = $lang->get('sysreqs_req_help_writable');

if ( !$req_config_w )
	$failed = true;
			
// Extension test: GD
$req_gd = function_exists('imagecreatefrompng') && function_exists('getimagesize') && function_exists('imagecreatetruecolor') && function_exists('imagecopyresampled');
if ( !$req_gd )
	$warnings[] = $lang->get('sysreqs_req_help_gd2');

if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_gd2') . ': ' . parse_shellcolor_string($lang->get($req_gd ? 'cli_test_pass' : 'cli_test_warn')) . "\n";

// FS test: ImageMagick
$req_imagick = which('convert');
if ( !$req_imagick )
	$warnings[] = $lang->get('sysreqs_req_help_imagemagick');

if ( !$silent ) echo '  ' . $lang->get('sysreqs_req_imagemagick') . ': ' . parse_shellcolor_string($lang->get($req_imagick ? 'cli_test_pass' : 'cli_test_warn')) . "\n";

if ( !empty($warnings) && !$silent )
{
	echo parse_shellcolor_string($lang->get('cli_msg_test_warnings')) . "\n";
	echo "  " . implode("\n  ", $warnings) . "\n";
}

if ( !function_exists('mysql_connect') && !function_exists('pg_connect') )
{
	installer_fail($lang->get('cli_err_no_drivers'));
}
if ( $failed )
{
	installer_fail($lang->get('cli_err_sysreqs_fail'));
}

##
## STAGE 1 INSTALLATION
##

if ( !$silent )
{
	echo parse_shellcolor_string($lang->get('cli_msg_tests_passed'));
	echo parse_shellcolor_string($lang->get('cli_msg_installing_db_stage1'));
}

// Create the config table
try
{
	$sql_parser = new SQL_Parser( ENANO_ROOT . "/install/schemas/{$driver}_stage1.sql" );
}
catch ( Exception $e )
{
	if ( !$silent )
		echo "\n";
	installer_fail($lang->get('cli_err_schema_load'));
}
// Check to see if the config table already exists
$q = $dbal->sql_query('SELECT config_name, config_value FROM ' . $db_prefix . 'config LIMIT 1;');
if ( !$q )
{
	$sql_parser->assign_vars(array(
			'TABLE_PREFIX' => $db_prefix
		));
	$sql = $sql_parser->parse();
	foreach ( $sql as $q )
	{
		if ( !$dbal->sql_query($q) )
		{
			if ( !$silent )
				echo "\n";
			echo "[$driver] " . $dbal->sql_error() . "\n";
			installer_fail($lang->get('cli_err_db_query'));
		}
	}
}
else
{
	$dbal->free_result();
	if ( !$dbal->sql_query('DELETE FROM ' . $db_prefix . 'config WHERE config_name = \'install_aes_key\';') )
	{
		if ( !$silent )
			echo "\n";
		echo "[$driver] " . $dbal->sql_error() . "\n";
		installer_fail($lang->get('cli_err_db_query'));
	}
}

if ( !$silent )
	echo parse_shellcolor_string($lang->get('cli_msg_ok')) . "\n";

define('table_prefix', $db_prefix);

##
## STAGE 2 INSTALLATION
##

$db =& $dbal;
$dbdriver =& $driver;

// Yes, I am predicting the future here. Because I have that kind of power.
$_SERVER['REMOTE_ADDR'] = ( intval(date('Y')) >= 2011 ) ? '::1' : '127.0.0.1';

if ( !$silent )
	echo parse_shellcolor_string($lang->get('cli_msg_parsing_schema'));

require_once( ENANO_ROOT . '/includes/rijndael.php' );
require_once( ENANO_ROOT . '/includes/hmac.php' );

$aes = AESCrypt::singleton(AES_BITS, AES_BLOCKSIZE);
$hmac_secret = hexencode(AESCrypt::randkey(20), '', '');

$admin_pass_clean =& $pass;
$admin_pass = hmac_sha1($admin_pass_clean, $hmac_secret);

unset($admin_pass_clean); // Security

try
{
	$sql_parser = new SQL_Parser( ENANO_ROOT . "/install/schemas/{$dbdriver}_stage2.sql" );
}
catch ( Exception $e )
{
	if ( !$silent )
		echo "\n";
	installer_fail($lang->get('cli_err_schema_load'));
}

$vars = array(
		'TABLE_PREFIX'         => table_prefix,
		'SITE_NAME'            => $db->escape($sitename),
		'SITE_DESC'            => $db->escape($sitedesc),
		'COPYRIGHT'            => $db->escape($copyright),
		'WIKI_MODE'            => '0',
		'ENABLE_CACHE'         => ( is_writable( ENANO_ROOT . '/cache/' ) ? '1' : '0' ),
		'VERSION'              => installer_enano_version(),
		'ADMIN_USER'           => $db->escape($user),
		'ADMIN_PASS'           => $admin_pass,
		'ADMIN_PASS_SALT'      => $hmac_secret,
		'ADMIN_EMAIL'          => $db->escape($email),
		'REAL_NAME'            => '', // This has always been stubbed.
		'ADMIN_EMBED_PHP'      => strval(AUTH_DISALLOW),
		'UNIX_TIME'            => strval(time()),
		'IP_ADDRESS'           => $_SERVER['REMOTE_ADDR']
	);

$sql_parser->assign_vars($vars);
$schema = $sql_parser->parse();

if ( !$silent )
	echo parse_shellcolor_string($lang->get('cli_msg_ok')) . "\n";

##
## PAYLOAD DELIVERY
##

if ( !$silent )
	echo parse_shellcolor_string($lang->get('cli_msg_installing_db_stage2'));

foreach ( $schema as $sql )
{
	if ( !$db->check_query($sql) )
	{
		if ( !$silent )
			echo "\n";
		installer_fail($lang->get('cli_err_query_sanity_failed'));
	}
}

foreach ( $schema as $sql )
{
	if ( !$db->sql_query($sql) )
	{
		if ( !$silent )
			echo "\n";
		echo "[$dbdriver] " . $db->sql_error() . "\n";
		installer_fail($lang->get('cli_err_db_query'));
	}
}

if ( !$silent )
	echo parse_shellcolor_string($lang->get('cli_msg_ok')) . "\n";

##
## CONFIG FILE GENERATION
##

require_once( ENANO_ROOT . '/install/includes/payload.php' );
require_once( ENANO_ROOT . '/install/includes/libenanoinstallcli.php' );
define('scriptPath', $scriptpath);
$urlscheme = strtr($urlscheme, array(
	'short' => 'shortened'
));
$_POST['url_scheme'] =& $urlscheme;

run_installer_stage('writeconfig', 'writing_config', 'stg_write_config', 'install_stg_writeconfig_body');

##
## FINAL STAGES
##

if ( !$silent )
	echo parse_shellcolor_string($lang->get('cli_msg_starting_api'));

// Start up the Enano API
$db->close();
@define('ENANO_ALLOW_LOAD_NOLANG', 1);
// If this fails, it fails hard.
require(ENANO_ROOT . '/includes/common.php');

if ( !$silent )
	echo parse_shellcolor_string($lang->get('cli_msg_ok')) . "\n";

$_POST['username'] =& $user;
$_POST['default_content_type'] = ( isset($start_with) ) ? $start_with : 'blank';

run_installer_stage('importlang', 'importing_language', 'stg_language_setup', $lang->get('install_stg_importlang_body'));
run_installer_stage('importcontent', 'importing_content', 'stg_add_content', $lang->get('install_stg_importcontent_body'));
run_installer_stage('initlogs', 'initting_logs', 'stg_init_logs', $lang->get('install_stg_initlogs_body'));
run_installer_stage('cleanup', 'cleaning_up', 'stg_aes_cleanup', $lang->get('install_stg_cleanup_body'), false);
run_installer_stage('buildindex', 'initting_index', 'stg_build_index', $lang->get('install_stg_buildindex_body'));
run_installer_stage('renameconfig', 'renaming_config', 'stg_rename_config', $lang->get('install_stg_rename_body', array('mainpage_link' => scriptPath . '/index.php')));

if ( !$silent )
{
	echo parse_shellcolor_string($lang->get('cli_msg_install_success'));
}

return true;

##
## FUNCTIONS
##

function cli_prompt($prompt, $default = false)
{
	if ( is_string($default) )
	{
		echo "$prompt [$default]: ";
		$stdin = fopen('php://stdin', 'r');
		$input = trim(fgets($stdin, 1024));
		fclose($stdin);
		if ( empty($input) )
			return $default;
		return $input;
	}
	else
	{
		while ( true )
		{
			echo "$prompt: ";
			$stdin = fopen('php://stdin', 'r');
			$input = trim(fgets($stdin, 1024));
			fclose($stdin);
			if ( !empty($input) )
				return $input;
		}
	}
}

function run_test($evalme, $test, $description, $warnonly = false)
{
	global $silent, $test_failed, $lang;
	if ( !$silent )
		echo "$test: ";
	$result = eval($evalme);
	if ( $result )
	{
		if ( !$silent )
			echo parse_shellcolor_string($lang->get('cli_test_pass'));
	}
	else
	{
		if ( !$silent )
			echo $warnonly ? parse_shellcolor_string($lang->get('cli_test_warn')) : parse_shellcolor_string($lang->get('cli_test_fail'));
		if ( !$silent )
			echo "\n" . preg_replace('/^/m', '  ', wordwrap(strip_tags($description)));
		if ( !$warnonly )
			$test_failed = true;
	}
	if ( !$silent )
		echo "\n";
}

function installer_fail($message)
{
	global $silent;
	if ( $silent )
		file_put_contents('php://stderr', "$message\n");
	else
		echo "\x1B[1;31m" . "Error:\x1B[0;1m $message\x1B[0m\n";
	exit(1);
}

function config_write_test()
{
	if ( !is_writable(ENANO_ROOT.'/config.new.php') )
		return false;
	// We need to actually _open_ the file to make sure it can be written, because sometimes this fails even when is_writable() returns
	// true on Windows/IIS servers. Don't ask me why.
	$h = @fopen( ENANO_ROOT . '/config.new.php', 'a+' );
	if ( !$h )
		return false;
	fclose($h);
	return true;
}

function parse_shellcolor_string($str)
{
	// only compute this once (saves some CPU time)
	static $do_colors = null;
	if ( $do_colors === null )
	{
		$do_colors = ( isset($_SERVER['TERM']) && $_SERVER['TERM'] != 'dumb' );
	}
	
	$expr = '/<c ((?:[0-9]+)(?:;[0-9]+)*)>([\w\W]*?)<\/c>/';
	while ( preg_match($expr, $str) )
		$str = $do_colors ? preg_replace($expr, "\x1B[\\1m\\2\x1B[0m", $str) : preg_replace($expr, "\\2", $str);
	
	return $str;
}