<?php /// $Id: install.php,v 1.22 2005/05/10 00:21:09 defacer Exp $
      /// install.php - helps admin user to create a config.php file

/// If config.php exists already then we are not needed.

if (file_exists('./config.php')) { 
    header('Location: index.php');
    die;
} else {
    $configfile = './config.php';
}

///==========================================================================//
/// We are doing this in stages
/// 0. Welcome and language settings
/// 1. Compatibility
/// 2. Database settings
/// 3. Host settings
/// 4. Administration directory name
/// 5. Save or display the settings
/// 6. Redirect to index.php
///==========================================================================//


/// Begin the session as we are holding all information in a session
/// variable until the end.

session_name('MoodleSession');
@session_start();

if (! isset($_SESSION['INSTALL'])) {
    $_SESSION['INSTALL'] = array();
}

$INSTALL = &$_SESSION['INSTALL'];   // Makes it easier to reference


/// If it's our first time through this script then we need to set some default values

if ( empty($INSTALL['language']) and empty($_POST['language']) ) {

    /// set defaults
    $INSTALL['language']        = 'en';

    $INSTALL['dbhost']          = 'localhost';
    $INSTALL['dbuser']          = '';
    $INSTALL['dbpass']          = '';
    $INSTALL['dbtype']          = 'mysql';
    $INSTALL['dbname']          = 'moodle';
    $INSTALL['prefix']          = 'mdl_';

    $INSTALL['wwwroot']         = '';
    $INSTALL['dirroot']         = dirname(__FILE__);
    $INSTALL['dataroot']        = dirname(dirname(__FILE__)) . '/moodledata';

    $INSTALL['admindirname']    = 'admin';

    $INSTALL['stage'] = 0;
}


//==========================================================================//

/// Fake some settings so that we can use selected functions from moodlelib.php and weblib.php

$SESSION->lang = (!empty($_POST['language'])) ? $_POST['language'] : $INSTALL['language'];
$CFG->dirroot = $INSTALL['dirroot'];
$CFG->dataroot = $INSTALL['dataroot'];
$CFG->directorypermissions = 00777;


/// Include some moodle libraries

require_once('./lib/moodlelib.php');
require_once('./lib/weblib.php');
require_once('./lib/adodb/adodb.inc.php');


/// guess the www root
if ($INSTALL['wwwroot'] == '') {
    list($INSTALL['wwwroot'], $xtra) = explode('/install.php', qualified_me());
}

$stagetext = array(0 => get_string('chooselanguage', 'install'),
                        get_string('compatibilitysettings', 'install'),
                        get_string('directorysettings', 'install'),