<?php
// $id$

/**
 * @file
 * Introduces open and private domains. In private domains users are forced to be assigned to a 
 * domain in order to view content on that domain. In open domains everyone can view the content. 
 */

/**
 * Implementation of hook_domainconf()
 *
 * Adding a checkbox to open and close the domain on the domain settings page.
 */
function domain_toggle_form_alter(&$form, $form_state, $form_id) {
  if($form_id == 'domain_edit_form'){    
    $res = db_query("SELECT open FROM {domain_toggle} WHERE domain_id = %d", $form['domain_id']['#value']);
    $def_value = db_fetch_object($res)->open;
    $form['domain']['open_domain'] = array(
      '#type' => 'checkbox',
      '#title' => t('Open'),
      '#default_value' => $def_value,
      '#description' => t('If content on this page shall be open for all users?')
    );
    $form['#submit'][] = 'domain_toggle_toggle_submit';
  }
}
 
/**
 * Handles the open checkbox in the domain settings form.
 * 
 * @param $form - copy of the form array
 * @param $form_state - link to the form state array
 */
function domain_toggle_toggle_submit($form, &$form_state) {
  $sql = "UPDATE {domain_toggle} SET open = '%s' WHERE domain_id = %d";
  db_query($sql, $form_state['values']['open_domain'], $form_state['values']['domain_id']);
}

/**
 * Implementation of hook_domaingrants()
 *
 * In Domain Toggle, we only let users see content on open domains and private domains that
 * they are registered with.  So we check the $user object in order
 * to set our grants rather than using the default module grants.
 *
 * @ingroup strict
 */
function domain_toggle_domaingrants(&$grants, $account, $op) {
  global $_domain;
  $res = db_query("SELECT open FROM {domain_toggle} WHERE domain_id = %d", $_domain['domain_id']);
  $open = db_fetch_object($res)->open;
  if ($open == '1') {
    return; 
  }
  // Code from the domain_strict module:
  // Erase the default domain_id grants.
  unset($grants['domain_id']);
  $domains = (isset($account->domain_user)) ? $account->domain_user : array();
  if (!empty($domains)) {
    foreach ($domains as $key => $value) {
      // The -1 is the root domain, since 0 cannot be stored by checkboxes.
      ($value == -1) ? $id = 0 : $id = $value;
      // If the user has access to the current domain, set that grant.
      if (abs($value) > 0 && $id == $_domain['domain_id']) {
        $grants['domain_id'][] = $id;
      }
    }
  }
}

/**
 * Implements hook_domainupdate()
 */
function domain_toggle_domainupdate($op, $domain, $form_state = array()) {
  switch ($op) {
    case 'delete':
      if ($domain != -1) {
        // Remove domain-specific entries from the {domain_toggle} table.
        db_query("DELETE FROM {domain_toggle} WHERE domain_id = %d", $domain['domain_id']);
      }
      break;
    case 'create':
      if ($domain != -1) {
        // Insert domain-specific entries to the {domain_toggle} table.
        db_query("INSERT INTO {domain_toggle} (domain_id) VALUES %d", $domain['domain_id']);
      }
      break;
  }
}
/**
 * Implements hook_domainview()
 */
function domain_toggle_domainview($op, $domain = array()) {
  switch ($op) {
    case 'header':
      return array(array('data' => t('Open'), 'field' => 'dt.open'));
      break;
    case 'select':
      return 'dt.open';
    case 'join':
      return "LEFT JOIN {domain_toggle} dt ON d.domain_id = dt.domain_id";
      break;
    case 'data':
      if($domain['domain_id']){
        $res = db_query("SELECT open FROM {domain_toggle} WHERE domain_id = %d", $domain['domain_id']);
        return (db_fetch_object($res)->open == '1') ? t('Yes') : t('No');
      }
      break;
  }
}