<?php
/**
 * @file
 * Install, update, and uninstall functions for the tvi module.
 */

/**
 * Implements hook_install().
 */
function tvi_install() {
  // Ensure weights are ok.
  $view_info = db_select('system', 's')
    ->fields('s', array('weight'))
    ->condition('s.name', 'views')
    ->range(NULL, 1)
    ->execute()
    ->fetchObject();

  db_update('system')
    ->fields(array('weight' => $view_info->weight + 5))
    ->condition('name', 'tvi')
    ->execute();
}

/**
 * Implements hook_uninstall().
 */
function tvi_uninstall() {
  db_delete('variable')
    ->condition('name', 'tvi_%', 'LIKE')
    ->execute();
}

/**
 * Replace xid int field by a varchar field to allow uuid usage.
 */
function tvi_update_7000(&$sandbox) {
  db_drop_primary_key('tvi_settings');
  db_change_field('tvi_settings', 'xid', 'xid',
    array(
      'type' => 'varchar',
      'length' => 255,
      'not null' => TRUE,
      'default' => '',
      'description' => 'Taxonomy vocabulary or term ID or UUID.',
    ),
    array('primary key' => array('type', 'xid'))
  );
}

/**
 * Replace vids by machine_names and tids by uuids if enabled.
 */
function tvi_update_7001() {
  $settings = db_select('tvi_settings', 'tvi')
                ->fields('tvi')
                ->condition('tvi.type', TVI_TYPE_VOCAB)
                ->execute()
                ->fetchAll();
  foreach ($settings as $setting) {
    $voc = taxonomy_vocabulary_load($setting->xid);
    // Check if the vocabulary still exists.
    if ($voc !== FALSE && !empty($voc->machine_name)) {
      db_update('tvi_settings')
        ->fields(array('xid' => $voc->machine_name))
        ->condition('type', $setting->type)
        ->condition('xid', $setting->xid)
        ->execute();
    }
  }

  if (module_exists('uuid')) {
    $settings = db_select('tvi_settings', 'tvi')
                  ->fields('tvi')
                  ->condition('tvi.type', TVI_TYPE_TERM)
                  ->execute()
                  ->fetchAll();

    foreach ($settings as $setting) {
      $term = taxonomy_term_load($setting->xid);
      // Check if the term still exists and its uuid is defined.
      if ($term !== FALSE && !empty($term->uuid)) {
        db_update('tvi_settings')
          ->fields(array('xid' => $term->uuid))
          ->condition('type', $setting->type)
          ->condition('xid', $setting->xid)
          ->execute();
      }
    }
  }
}

/**
 * Drop schema in favor of {variable} table.
 */
function tvi_update_7002() {
  tvi_include('query');
  $settings = db_select('tvi_settings', 'tvi')
    ->fields('tvi')
    ->execute()
    ->fetchAll();
  foreach ($settings as $setting) {
    tvi_update_settings($setting);
  }
  db_drop_table('tvi_settings');
}

/**
 * Add inherit parameters to settings where it's missing.
 */
function tvi_update_7003() {
  tvi_include('query');
  $settings = db_select('variable', 'v')
    ->fields('v', array('name'))
    ->condition('name', 'tvi_%', 'LIKE')
    ->execute()
    ->fetchAll();
  foreach ($settings as $setting) {
    list($_, $type, $xid) = explode('_', $setting->name);
    $setting = tvi_load_settings($xid, $type, FALSE);
    if ($setting && $setting->type == TVI_TYPE_TERM && empty($setting->inherit)) {
      $setting->inherit = FALSE;
    }
    if ($setting) {
      tvi_update_settings($setting);
    }
  }
}