<?php

/**
 * @file
 * Installation functions for Viewfield module.
 */

/**
 * Implements hook_field_schema().
 */
function viewfield_field_schema($field) {
  return array(
    'columns' => array(
      'vname' => array(
        'type' => 'varchar',
        'not null' => FALSE,
        // Views requires at least 96 chars for the view name and display, plus
        // we need 1 for our delimiter. Round up to a common value of 128.
        'length' => 128,
      ),
      'vargs' => array(
        'type' => 'varchar',
        'not null' => FALSE,
        'length' => 255,
      ),
    ),
  );
}

/**
 * Migrate force_default value from widget to instance settings.
 */
function viewfield_update_7200() {
  $result = db_query("SELECT fci.id, fci.data FROM {field_config} fc INNER JOIN {field_config_instance} fci ON fc.id = fci.field_id WHERE fc.type = 'viewfield'");
  foreach ($result as $record) {
    $data = unserialize($record->data);
    if (isset($data['widget']['settings']['force_default'])) {
      // Protect against the case where a user has upgraded viewfield, produced
      // a new instance-level force_default, and only later runs update.php.
      if (!isset($data['settings']['force_default'])) {
        $data['settings']['force_default'] = $data['widget']['settings']['force_default'];
      }
      unset($data['widget']['settings']['force_default']);
      db_update('field_config_instance')
        ->fields(array('data' => serialize($data)))
        ->condition('id', $record->id)
        ->execute();
    }
  }
}

/**
 * Migrate allowed_views value from field to instance settings.
 */
function viewfield_update_7201() {
  $fields = db_query("SELECT id, data FROM {field_config} WHERE type = 'viewfield'");
  foreach ($fields as $field) {
    $fc_data = unserialize($field->data);
    if (isset($fc_data['settings']['allowed_views'])) {
      $instances = db_query("SELECT id, data FROM {field_config_instance} WHERE field_id = :field_id", array(':field_id' => $field->id));
      foreach ($instances as $instance) {
        $fci_data = unserialize($instance->data);
        // Write new setting only if a new one hasn't been created before
        // running this update.
        if (!isset($fci_data['settings']['allowed_views'])) {
          $fci_data['settings']['allowed_views'] = $fc_data['settings']['allowed_views'];
          db_update('field_config_instance')
            ->fields(array('data' => serialize($fci_data)))
            ->condition('id', $instance->id)
            ->execute();
        }
      }
      unset($fc_data['settings']['allowed_views']);
      db_update('field_config')
        ->fields(array('data' => serialize($fc_data)))
        ->condition('id', $field->id)
        ->execute();
    }
  }
}