<?php

/**
 * Implementation of hook_uninstall().
 *
 * Remove the variables from the variable table.
 */
function advuser_uninstall() {
  /**
   * It would be nice to use variable_del here but variable_del is expensive
   * since it calls cache_clear_all('variables', 'cache') with each one.
   * Therefore we'll stick with the db_query and call the cache_clear_all once
   * it is completed.
   *
   * variable_del('advuser_allow_list_uid1');
   * variable_del('advuser_listno');
   * variable_del('advuser_log_notifications');
   * variable_del('advuser_modify_mail');
   * variable_del('advuser_modify_notify');
   * variable_del('advuser_modify_subject');
   * variable_del('advuser_new_mail');
   * variable_del('advuser_new_notify');
   * variable_del('advuser_new_subject');
   * variable_del('advuser_nobody_from_address');
   * variable_del('advuser_notify_uid1');
   * variable_del('advuser_profile_fields');
   * variable_del('advuser_reset_never_access');
   * variable_del('advuser_senders_from_address');
   * variable_del('advuser_set_never_access');
   * cache_clear_all('variables', 'cache');
   */
  $delete_variables = "DELETE FROM {variable} WHERE name LIKE 'advuser_%'";
  db_query($delete_variables);
  cache_clear_all('variables', 'cache');
}

/**
 * Implementation of hook_requirements().
 */
function advuser_requirements($phase) {
  $requirements = array();
  // Ensure translations don't break at install time
  $t = get_t();

  if ($phase == 'runtime') {
    /**
     * This check is important to catch updates from previous versions the
     * Token module wasn't yet a dependency.
     */
    if (!module_exists('token')) {
      $requirements['advuser_token'] = array(
        'title' => $t('!module module', array('!module' => $t('Token'))),
        'value' => $t('Disabled'),
        'severity' => REQUIREMENT_ERROR,
        'description' => $t(
          'Since version 6.x-3.x the !this_module module needs the !token module for token substitution. Please install and enable it.',
          array(
            '!token' => l($t('Token'), 'http://drupal.org/project/token'),
            '!this_module' => $t('Advanced User')
          )
        ),
      );
    }
  }

  return $requirements;
}

/**
 * Updating substitution tokens from Advanced User module only tokens to Token
 * module tokens.
 */
function advuser_update_6300() {
  $ret = array();
  $variables_to_update = array(
    'advuser_modify_mail',
    'advuser_modify_subject',
    'advuser_new_mail',
    'advuser_new_subject',
  );
  $token_substitutions = array(
    '%user_name' => '[user-raw]',
    '%site' => '[site-name]',
    '%uri' => '[account-url]',
    '%user_email' => '[mail]',
    '%user_status' => '[advuser-status]',
    '%user_theme' => '[advuser-theme]',
    '%user_created' => '[advuser-created]',
    '%user_language' => '[advuser-language]',
    '%user_timezone' => '[advuser-timezone]',
    '%user_signature' => '[advuser-signature-raw]',
  );

  foreach ($variables_to_update as $variable) {
    $current = variable_get($variable, '');
    if (strlen($current) == 0) {
      continue;
    }
    $new = str_replace(
      array_keys($token_substitutions),
      array_values($token_substitutions),
      $current
    );
    variable_set($variable, $new);
    $ret[] = update_sql($query);
  }

  return $ret;
}

// vim:ft=php:sts=2:sw=2:ts=2:et:ai:sta:ff=unix