<?php

/**
 * @file
 * This file holds the install information for the ShareThis Module.
 */

/**
 * Implements hook_install().
 */
function sharethis_install() {
  variable_set('sharethis_publisherID', sharethis_create_publisher_key());
}

/**
 * Creates a publisher key for use with the ShareThis API.
 */
function sharethis_create_publisher_key() {
  $pubkey = "dr-";
  $pubkey .= dechex(mt_rand(0, 0xffff));
  $pubkey .= dechex(mt_rand(0, 0xffff)) . "-";
  $pubkey .= dechex(mt_rand(0, 0xffff)) . "-";
  $pubkey .= dechex(mt_rand(0, 0xffff)) . "-";
  $pubkey .= dechex(mt_rand(0, 0xffff)) . "-";
  $pubkey .= dechex(mt_rand(0, 0xffff));
  $pubkey .= dechex(mt_rand(0, 0xffff));
  $pubkey .= dechex(mt_rand(0, 0xffff));
  return $pubkey;
}

/**
 * Implements hook_uninstall().
 */
function sharethis_uninstall() {
  db_delete('variable')->condition('name', db_like('sharethis_') . '%', 'LIKE')->execute();
  cache_clear_all('variables', 'cache');
}

/**
 * Remove the custom ShareThis table.
 */
function sharethis_update_7001() {
  // Move from the st_table to the variables table.
  if (db_table_exists('st_table')) {
    // Select all options in the ShareThis table.
    $result = db_select('st_table', 's')->fields('s', array('st_option', 'st_value'))->execute();
    while ($record = $result->fetchAssoc()) {
      // Variable name switches. publisherID stays the same.
      switch ($record['st_option']) {
        case 'buttons':
          $record['st_option'] = 'button_option';
          break;

        case 'nodeType':
          $record['st_option'] = 'node_option';
          break;

        case 'services':
          $record['st_option'] = 'service_option';
          break;

        case 'viewMode':
          $record['st_option'] = 'teaser_option';
          break;

        case 'widget':
          $record['st_option'] = 'widget_option';
          break;
      }
      // Prefix the option with a "sharethis_" namespace.
      variable_set('sharethis_' . $record['st_option'], $record['st_value']);
    }
    // Now that our settings are in the variables table, safely drop the table.
    db_drop_table('st_table');

    // Return a success message.
    return t('Switched from the custom ShareThis table to the Variables table.');
  }
}