<?php
/**
 * @file
 * The install file for the module.
 */

/**
 * Implements hook_enable().
 */
function wysiwyg_ckeditor_ckfinder_bridge_enable() {

  global $base_path;
  $module_path = drupal_get_path('module', 'wysiwyg_ckeditor_ckfinder_bridge');
  $this_path   = realpath(dirname(__FILE__));
  $regex_pat   = '~' . DIRECTORY_SEPARATOR . "$module_path\$~";
  $base_dir    = preg_replace($regex_pat, '', $this_path);

  // Check that CKFinder is installed.
  $ckfinder_path = libraries_get_path('ckfinder');
  if (empty($ckfinder_path)) {
    drupal_set_message(check_plain(t('The WYSIWYG/CKEDITOR/CKFINDER bridge module requires CKFinder to be installed in the libraries path. Please install it, then re-enable this module.')), 'warning');
    return;
  }

  $full_ckfinder_path = DRUPAL_ROOT . DIRECTORY_SEPARATOR . substr($base_path, 1) . $ckfinder_path;
  $conf_file_path     = $full_ckfinder_path . DIRECTORY_SEPARATOR . 'config.php';
  $conf_file_dir      = dirname($conf_file_path);

  // Check that we have write permissions on the configuration file.
  if (!file_prepare_directory($conf_file_dir)) {
    drupal_set_message(t('The WYSIWYG/CKEDITOR/CKFINDER bridge module requires write permissions to the :dir directory', array(':dir' => $full_ckfinder_path)), 'warning');
    return;
  }

  // Attempt to install.
  $installed = FALSE;
  if (file_exists($conf_file_path)) {
    $conf_file_str = file_get_contents($conf_file_path);
    $installed     = strpos($conf_file_str, '-- Do not remove this line. Required by wysiwyg_ckeditor_ckfinder_bridge module --');
  }
  if ($installed !== FALSE) {
    drupal_set_message(t('Configuration file already appears to have been updated. Please test to check that CKFinder is working. If not, try re-installing both the WYSIWYG/CKEDITOR/CKFINDER bridge module and the CKFinder library.'));
    return;
  }
  else {
    $module_path     = $base_dir . DIRECTORY_SEPARATOR . drupal_get_path('module', 'wysiwyg_ckeditor_ckfinder_bridge');
    $mod_config_path = $module_path . DIRECTORY_SEPARATOR . 'config.php';
    $filemgr_conf    = $module_path . DIRECTORY_SEPARATOR . 'filemanager.config.php';

    if (file_exists($conf_file_path)) {
      rename($conf_file_path, $conf_file_path . '.orig');
    }
    copy($mod_config_path, $conf_file_path);
    if (!file_exists($conf_file_path)) {
      drupal_set_message(t('Could not copy config file to :path. You will need to manually copy from the module directory to the library directory.', array(':path' => $conf_file_path)));
    }
  }

  drupal_set_message(t('The WYSIWYG/CKEDITOR/CKFINDER bridge module has been installed. Be sure to check the permissions for "allow CKFinder file uploads". Please also make sure that your $cookie_domain variable is set correctly in settings.php'));
}

/**
 * Implementation of hook requirements.
 */
function wysiwyg_ckeditor_ckfinder_bridge_requirements($phase) {

  global $base_path;

  switch ($phase) {
    case 'install':
      // Check that CKFinder is installed.
      $t = get_t();
      $ckfinder_path = libraries_get_path('ckfinder');
      if (empty($ckfinder_path)) {
        $requirements['ckfinder_wysiwyg'] = array(
          'value' => $t('Not installed'),
          'severity' => REQUIREMENT_ERROR,
          'description' => $t('The ckfinder library is missing or in the wrong directory.'),
        );
        return $requirements;
      }

      // Check that we have write permissions on the configuration file.
      $full_ckfinder_path = DRUPAL_ROOT . DIRECTORY_SEPARATOR . check_plain(substr($base_path, 1)) . $ckfinder_path;
      $conf_file_path = $full_ckfinder_path . DIRECTORY_SEPARATOR . 'config.php';
      if (!touch($conf_file_path)) {
        $requirements['ckfinder_wysiwyg'] = array(
          'value' => $t('Not installed'),
          'severity' => REQUIREMENT_ERROR,
          'description' => $t('Unable to write to the CKFinder directory.'),
        );
        return $requirements;

      }
      break;
  }

}


/**
 * Implements hook_uninstall().
 */
function wysiwyg_ckeditor_ckfinder_bridge_uninstall() {
  $to_delete = array(
    'ckfinder_licence_name', 'ckfinder_licence_key', 'ckfinder_files_location',
    'ckfinder_file_browswer',
  );
  foreach ($to_delete as $var) {
    variable_del($var);
  }
}