<?php
// $Id: luceneapi_facet.install,v 1.1.2.9 2009/10/19 21:55:44 cpliakas Exp $

/**
 * @file
 * Installation functions for Search Lucene Facets.
 */

/**
 * Implementation of hook_install().
 */
function luceneapi_facet_install() {
  $sql = "SELECT weight FROM {system} WHERE type = 'module' AND name = 'luceneapi'";
  $weight = db_result(db_query($sql));

  $sql = "UPDATE {system} SET weight = %d WHERE type = 'module' AND name = 'luceneapi_facet'";
  db_query($sql, array($weight + 1));
}

/**
 * Implementation of hook_uninstall().
 */
function luceneapi_facet_uninstall() {
  // removes all variables that start with "luceneapi_facet:"
  $result = db_query("SELECT name FROM {variable} WHERE name LIKE 'luceneapi_facet:%%'");
  while ($row = db_fetch_object($result)) {
    variable_del($row->name);
  }
}

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

  // if requirements fail for Search Lucene API, this module will still get
  // installed breaking the site.  This code double checks the requirements to
  // get around this bug.  Requirements are only returned on failure.
  // @see http://drupal.org/node/592182
  // @see http://drupal.org/node/592800
  if ('install' == $phase) {

    // bails if Drupal is in the process of being installed
    if (!function_exists('db_query') || (function_exists('install_verify_drupal') && !install_verify_drupal())) {
      return array();
    }

    // makes sure path to luceneapi exists, formats path to "lib" dir
    if ($luceneapi_path = drupal_get_path('module', 'luceneapi')) {
      $lib_dir = sprintf('%s/lib', $luceneapi_path);
    }
    else {
      return array(
        'luceneapi_facet' => array(
          'title' => t('Search Lucene Facets'),
          'severity' => REQUIREMENT_ERROR,
          'description' => t('Search Lucene Facets depends on Search Lucene API.'),
        ),
      );
    }

    // re-tests Search Lucene API requirements
    if (!is_dir("$lib_dir/Zend") || !is_dir("$lib_dir/LuceneAPI") || !extension_loaded('iconv')) {
      return array(
        'luceneapi_facet' => array(
          'title' => t('Search Lucene Facets'),
          'severity' => REQUIREMENT_ERROR,
          'description' => t('Search Lucene Facets depends on Search Lucene API.'),
        ),
      );
    }
  }
}

/**
 * Implementation of hook_update_N().
 */
function luceneapi_facet_update_6201() {
  $items = array();

  // each module has it's own facet block now
  $sql = 'UPDATE {blocks}'
       ." SET delta = 'luceneapi_node'"
       ." WHERE module = 'luceneapi_facet' AND delta = 'luceneapi_facet'";

  $items[] = update_sql($sql);

  return $items;
}