<?php

/*
 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
 * Version 1.1.1
 * Copyright (C) 2006-2007 Dan Fuhry
 * Installation package
 * sysreqs.php - Installer system-requirements page
 *
 * 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.
 */

if ( !defined('IN_ENANO_INSTALL') )
  die();

global $failed, $warned;

$failed = false;
$warned = false;

function not($var)
{
  if($var)
  {
    return false;
  } 
  else
  {
    return true;
  }
}

function run_test($code, $desc, $extended_desc, $warn = false)
{
  global $failed, $warned;
  static $cv = true;
  $cv = not($cv);
  $val = eval($code);
  if($val)
  {
    if($cv) $color='CCFFCC'; else $color='AAFFAA';
    echo "<tr><td style='background-color: #$color; width: 500px; padding: 5px;'>$desc</td><td style='padding-left: 10px;'><img alt='Test passed' src='../images/good.gif' /></td></tr>";
  } elseif(!$val && $warn) {
    if($cv) $color='FFFFCC'; else $color='FFFFAA';
    echo "<tr><td style='background-color: #$color; width: 500px; padding: 5px;'>$desc<br /><b>$extended_desc</b></td><td style='padding-left: 10px;'><img alt='Test passed with warning' src='../images/unknown.gif' /></td></tr>";
    $warned = true;
  } else {
    if($cv) $color='FFCCCC'; else $color='FFAAAA';
    echo "<tr><td style='background-color: #$color; width: 500px; padding: 5px;'>$desc<br /><b>$extended_desc</b></td><td style='padding-left: 10px;'><img alt='Test failed' src='../images/bad.gif' /></td></tr>";
    $failed = true;
  }
}
function is_apache()
{
  $r = strstr($_SERVER['SERVER_SOFTWARE'], 'Apache') ? true : false;
  return $r;
}

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;
}

?>
<h3><?php echo $lang->get('sysreqs_heading'); ?></h3>
 <p><?php echo $lang->get('sysreqs_blurb'); ?></p>
 
<table border="0" cellspacing="0" cellpadding="0">

<?php
run_test('return version_compare(\'5.2.0\', PHP_VERSION, \'<=\');', $lang->get('sysreqs_req_php5'), $lang->get('sysreqs_req_desc_php5'), true);
run_test('return function_exists(\'mysql_connect\');', $lang->get('sysreqs_req_mysql'), $lang->get('sysreqs_req_desc_mysql') );
run_test('return function_exists(\'pg_connect\');', $lang->get('sysreqs_req_postgres'), $lang->get('sysreqs_req_desc_postgres'), true);
run_test('return @ini_get(\'file_uploads\');', $lang->get('sysreqs_req_uploads'), $lang->get('sysreqs_req_desc_uploads') );
run_test('return is_apache();', $lang->get('sysreqs_req_apache'), $lang->get('sysreqs_req_desc_apache'), true);
run_test('return config_write_test();', $lang->get('sysreqs_req_config'), $lang->get('sysreqs_req_desc_config') );
run_test('return file_exists(\'/usr/bin/convert\');', $lang->get('sysreqs_req_magick'), $lang->get('sysreqs_req_desc_magick'), true);
run_test('return is_writable(ENANO_ROOT.\'/cache/\');', $lang->get('sysreqs_req_cachewriteable'), $lang->get('sysreqs_req_desc_cachewriteable'), true);
run_test('return is_writable(ENANO_ROOT.\'/files/\');', $lang->get('sysreqs_req_fileswriteable'), $lang->get('sysreqs_req_desc_fileswriteable'), true);
if ( !function_exists('mysql_connect') && !function_exists('pg_connect') )
{
  // FIXME: l10n
  run_test('return false;', 'No database drivers are available.', 'You need to have at least one database driver working to install Enano. See the warnings on MySQL and PostgreSQL above for more information on installing these database drivers.', false);
}
echo '</table>';
echo '<br />';
if(!$failed)
{
  ?>
  
  <div class="pagenav">
  <?php
  if($warned) {
    echo '<table border="0" cellspacing="0" cellpadding="0">';
    run_test('return false;', $lang->get('sysreqs_summary_warn_title'), $lang->get('sysreqs_summary_warn_body'), true);
    echo '</table>';
  } else {
    echo '<table border="0" cellspacing="0" cellpadding="0">';
    run_test('return true;', '<b>' . $lang->get('sysreqs_summary_success_title') . '</b><br />' . $lang->get('sysreqs_summary_success_body'), 'You should never see this text. Congratulations for being an Enano hacker!');
    echo '</table>';
  }
  ?>
  <form action="install.php?stage=database" method="post">
    <?php
      echo '<input type="hidden" name="language" value="' . $lang_id . '" />';
    ?>
    <table border="0">
    <tr>
      <td>
        <input type="submit" value="<?php echo $lang->get('meta_btn_continue'); ?>" />
      </td>
      <td>
        <p>
          <span style="font-weight: bold;"><?php echo $lang->get('meta_lbl_before_continue'); ?></span><br />
          &bull; <?php echo $lang->get('sysreqs_objective_scalebacks'); ?><br />
          &bull; <?php echo $lang->get('license_objective_have_db_info'); ?>
        </p>
      </td>
    </tr>
    </table>
  </form>
  </div>
<?php
}
else
{
  if ( $failed )
  {
    echo '<div class="pagenav"><table border="0" cellspacing="0" cellpadding="0">';
    run_test('return false;', $lang->get('sysreqs_summary_fail_title'), $lang->get('sysreqs_summary_fail_body'));
    echo '</table></div>';
  }
}
    
?>