<?php

// $Id: xmlsitemap_taxonomy.module,v 1.1.2.19 2009/07/16 12:56:04 earnie Exp $

/**

 * @file

 * Adds taxonomy terms to the sitemap.

 */

/**

 * @addtogroup xmlsitemap

 * @{

 */

/*****************************************************************************

 * Drupal hooks.

 ****************************************************************************/

/**

 * Implementation of hook_cron().

 */

function xmlsitemap_taxonomy_cron() {

  if (($limit = variable_get('xmlsitemap_cron_limit', 100)) != -1) {

    $sql = "SELECT t.* FROM {term_data} t

      LEFT JOIN {xmlsitemap_taxonomy} xt ON xt.tid = t.tid

      WHERE xt.tid IS NULL";

    $result = db_query_range($sql, 0, $limit);

    while ($term = db_fetch_object($result)) {

      $row = new stdClass();

      $row->tid = $term->tid;

      $row->vid = $term->vid;

      $row->changed = REQUEST_TIME;

      drupal_write_record('xmlsitemap_taxonomy', $row);

    }

    if ($result) {

      xmlsitemap_flag_sitemap();

    }

  }

}

/**

 * Implementation of hook_form_FORM_ID_alter().

 */

function xmlsitemap_taxonomy_form_taxonomy_form_term_alter(&$form, &$from_state) {

  $priority = db_result(db_query("SELECT priority_override

    FROM {xmlsitemap_taxonomy}

    WHERE tid = %d", $form['tid']['#value'])

  );

  if ($priority === FALSE) {

    $priority = -2.0;

  }

  $options = xmlsitemap_priority_options('both');

  $default = variable_get('xmlsitemap_taxonomy_vocabulary_priority_'. $form['vid']['#value'], '0.5');

  if (!isset($form['xmlsitemap'])) {

    $form['xmlsitemap'] = array(

      '#type' => 'fieldset',

      '#title' => t('XML sitemap'),

      '#collapsible' => TRUE,

    );

  }

  $form['xmlsitemap']['xmlsitemap_taxonomy_priority'] = array(

    '#type' => 'select',

    '#title' => t('Priority'),

    '#description' => t('The default priority is %priority.', array('%priority' => $options[$default])),

    '#default_value' => $priority,

    '#options' => $options,

  );

  $form['submit']['#weight'] = isset($form['submit']['#weight']) ? $form['submit']['#weight'] + 1 : 1;

  $form['delete']['#weight'] = isset($form['delete']['#weight']) ? $form['delete']['#weight'] + 1 : 1;

}

/**

 * Implementation of hook_form_FORM_ID_alter().

 */

function xmlsitemap_taxonomy_form_taxonomy_form_vocabulary_alter(&$form, &$from_state) {

  $form['xmlsitemap'] = array(

    '#type' => 'fieldset',

    '#title' => t('XML sitemap'),

    '#collapsible' => TRUE,

  );

  $form['xmlsitemap']['xmlsitemap_taxonomy_vocabulary_priority'] = array(

    '#type' => 'select',

    '#title' => t('Priority'),

    '#description' => t('This will be the default priority of terms in this vocabulary.'),

    '#default_value' => variable_get('xmlsitemap_taxonomy_vocabulary_priority_'. $form['vid']['#value'], 0.5),

    '#options' => xmlsitemap_priority_options('exclude'),

  );

  $form['submit']['#weight'] = isset($form['submit']['#weight']) ? $form['submit']['#weight'] + 1 : 1;

  $form['delete']['#weight'] = isset($form['delete']['#weight']) ? $form['delete']['#weight'] + 1 : 1;

}

/**

 * Implementation of hook_nodeapi().

 */

function xmlsitemap_taxonomy_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {

  switch ($op) {

    case 'update':

      $terms = taxonomy_node_get_terms($node);

      foreach ($terms as $term) {

        $result = db_fetch_object(db_query("SELECT tid, changed, previously_changed, priority_override

          FROM {xmlsitemap_taxonomy}

          WHERE tid = %d", $term->tid));

        if ($result === FALSE) {

          $row = new stdClass();

          $row->tid = $term->tid;

          $row->vid = $term->vid;

          $row->changed = $node->changed;

          $row->previously_changed = $node->created;

        }

        else {

          $row = $result;

          if ($row->changed < $node->changed) {

            $row->previously_changed = $row->changed;

            $row->changed = $node->changed;

          }

        }

        drupal_write_record('xmlsitemap_taxonomy', $row, $result === FALSE ? NULL : 'tid');

        xmlsitemap_flag_sitemap();

      }

      break;

  }

}

/**

 * Implementation of hook_taxonomy().

 */

function xmlsitemap_taxonomy_taxonomy($op, $type, $array = NULL) {

  if ($type == 'vocabulary') {

    switch ($op) {

      case 'delete':

        db_query("DELETE FROM {xmlsitemap_taxonomy} WHERE vid = %d", $array['vid']);

        variable_del('xmlsitemap_taxonomy_vocabulary_priority_'. $array['vid']);

        xmlsitemap_flag_sitemap();

        break;

      case 'insert':

      case 'update':

        if (isset($array['vid'])) {

          if (variable_get('xmlsitemap_taxonomy_vocabulary_priority_'. $array['vid'], 0.5) != $array['xmlsitemap_taxonomy_vocabulary_priority']) {

            variable_set('xmlsitemap_taxonomy_vocabulary_priority_'. $array['vid'], $array['xmlsitemap_taxonomy_vocabulary_priority']);

            xmlsitemap_flag_sitemap();

          }

        }

        break;

    }

  }

  else {

    switch ($op) {

      case 'delete':

        db_query("DELETE FROM {xmlsitemap_taxonomy} WHERE tid = %d", $array['tid']);

        db_query("DELETE FROM {xmlsitemap} WHERE type = 'taxonomy' AND id = %d", $array['tid']);

        break;

      case 'insert':

        if (isset($array['tid']) && isset($array['vid'])) {

          $row = new stdClass();

          $row->tid = $array['tid'];

          $row->vid = $array['vid'];

          $row->changed = REQUEST_TIME;

          $row->priority_override = isset($array['xmlsitemap_taxonomy_priority']) ? $array['xmlsitemap_taxonomy_priority'] : -2.0;

          drupal_write_record('xmlsitemap_taxonomy', $row);

        }

        break;

      case 'update':

        $result = db_fetch_object(db_query("SELECT tid, vid, changed, previously_changed, priority_override

          FROM {xmlsitemap_taxonomy}

          WHERE tid = %d", $array['tid'])

        );

        if ($result === FALSE) {

          $row = new stdClass();

          $row->tid = $array['tid'];

          $row->vid = $array['vid'];

          $row->changed = REQUEST_TIME;

          $row->priority_override = isset($array['xmlsitemap_taxonomy_priority']) ? $array['xmlsitemap_taxonomy_priority'] : -2.0;

        }

        else {

          $row = $result;

          if (isset($array['xmlsitemap_taxonomy_priority'])) {

            $row->priority_override = $array['xmlsitemap_taxonomy_priority'];

          }

        }

        drupal_write_record('xmlsitemap_taxonomy', $row, $result === FALSE ? NULL : 'tid');

        break;

    }

    xmlsitemap_flag_sitemap();

  }

}

/**

 * Implementation of hook_xmlsitemap_description().

 */

function xmlsitemap_taxonomy_xmlsitemap_description() {

  return '<dt>'. t('XML sitemap taxonomy') .'</dt>'.

    '<dd>'. t('The module adds <a href="@terms">taxonomy terms</a> (categories) to the sitemap. The term default priority may be changed while adding or editing vocabularies and the term default priority can be overridden while adding or editing terms.', array('@terms' => url('admin/content/taxonomy'))) .'</dd>';

}

/**

 * Implementation of hook_xmlsitemap_links().

 */

function xmlsitemap_taxonomy_xmlsitemap_links() {

  $anon_account = drupal_anonymous_user();

  $user_access = user_access('access content', $anon_account);

  $result = db_query(

    db_rewrite_sql(

      "SELECT t.tid, t.vid, v.module, xt.changed, xt.previously_changed, xt.priority_override

        FROM {term_data} t

        LEFT JOIN {vocabulary} v ON t.vid = v.vid

        LEFT JOIN {xmlsitemap_taxonomy} xt ON t.tid = xt.tid",

      't', 'tid'

    )

  );

  $row = new stdClass();

  $row->module = 'xmlsitemap_taxonomy';

  $row->type = 'taxonomy';

  while ($term = db_fetch_object($result)) {

    $row->loc = taxonomy_term_path($term);

    $row->id = $term->tid;

    $row->changed = $term->changed;

    $row->changefreq = max(REQUEST_TIME - $term->changed, empty($term->previously_changed) ? 0 : $term->changed - $term->previously_changed);

    if ($term->priority_override != -2.0) {

      $priority = $term->priority_override;

    }

    else {

      $priority = variable_get('xmlsitemap_taxonomy_vocabulary_priority_'. $term->vid, 0.5);

    }

    $row->priority = $user_access ? $priority == -1.0 ? $priority : min(max(round($priority, 1), 0.0), 1.0) : -1;

    $old_row = db_fetch_object(db_query("SELECT lid, type, priority FROM {xmlsitemap} WHERE loc = '%s'", $row->loc));

    if ($old_row === FALSE) {

      drupal_write_record('xmlsitemap', $row);

    }

    elseif ($old_row->type = 'taxonomy' && $old_row->priority != $row->priority) {

      $row->lid = $old_row->lid;

      drupal_write_record('xmlsitemap', $row, 'lid');

    }

  }

}

/**

 * @} End of "addtogroup xmlsitemap".

 */