<?php

/**
 * @file
 * gmap_taxonomy install routines.
 */

/**
 * Implement hook_requirements().
 */
function gmap_taxonomy_requirements($phase) {
  $requirements = array();
  if (!variable_get('taxonomy_maintain_index_table', TRUE)) {
    $requirements['gmap_taxonomy_able_to_index'] = array(
      'title' => t('GMap Taxonomy Markers'),
      'value' => '',
      'description' => t('The variable <em>taxonomy_maintain_index_table</em> is set to FALSE. gmap_taxonomy.module will not work properly.'),
      'severity' => REQUIREMENT_ERROR,
    );
  }
  return $requirements;
}


/**
 * Implementation of hook_schema().
 */
function gmap_taxonomy_schema() {
  $schema['gmap_taxonomy_term'] = array(
    'fields' => array(
      'tid'    => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
      'marker' => array('type' => 'varchar', 'length' => 32),
    ),
    'primary key' => array('tid'),
  );

  $schema['gmap_taxonomy_node'] = array(
    'fields' => array(
      'nid'    => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
//      'vid'    => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
      'tid'    => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
      'marker' => array('type' => 'varchar', 'length' => 32),
    ),
    'primary key' => array('nid'),
  );

  return $schema;
}

/**
 * Track the tid that caused the association, so we can
 * do fixups faster.
 */
function gmap_taxonomy_update_5001() {
  $ret = array();
  // Removed because we just kill the table and recreate it in update 5002^H^H^H^H6001 anyway.
  return $ret;
}

/**
 * Rebuild {gmap_taxonomy_node}.
 */
function gmap_taxonomy_update_6001() {
  $ret = array();

  // Drop the existing table and rebuild it from scratch.
  if (db_table_exists('gmap_taxonomy_node')) {
    db_drop_table($ret, 'gmap_taxonomy_node');
  }

  $schema['gmap_taxonomy_node'] = array(
    'fields' => array(
      'nid'    => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
      'vid'    => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
      'tid'    => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0),
      'marker' => array('type' => 'varchar', 'length' => 32),
    ),
    'primary key' => array('vid'),
    'indexes' => array(
      'nid' => array('nid'),
    ),
  );

  db_create_table($ret, 'gmap_taxonomy_node', $schema['gmap_taxonomy_node']);

  // Recreate the data.
  // Useful for repopulating in bulk... Copy to hook_enable()?
  $ret[] = update_sql("INSERT INTO {gmap_taxonomy_node} (nid, vid, tid, marker) (SELECT n.nid, n.vid, t.tid, g.marker FROM {node_revisions} n INNER JOIN {term_node} t ON n.vid = t.vid INNER JOIN {gmap_taxonomy_term} g ON t.tid = g.tid GROUP BY n.vid ORDER BY NULL)");

  return $ret;
}

/**
 * Rebuild {gmap_taxonomy_node} again.
 */
/*
function gmap_taxonomy_update_7000() {
  // @@@ FIXME -- rebuild the table from scratch again.
}
*/