<?php

/**
 * @file
 * Install, update and uninstall functions for the Crop API module.
 */

use Drupal\crop\Entity\Crop;

/**
 * Implements hook_requirements().
 */
function crop_requirements($phase) {
  $requirements = [];

  // This branch of Crop API shouldn't be used with core < 8.4.x or with
  // media_entity 1.x enabled.
  $incompatible = FALSE;
  $drupal_version = explode('.', \Drupal::VERSION);
  if ($drupal_version[1] < 4) {
    $incompatible = TRUE;
  }
  elseif (\Drupal::moduleHandler()->moduleExists('media_entity')) {
    $info = system_get_info('module', 'media_entity');
    if (version_compare($info['version'], '8.x-2') < 0) {
      $incompatible = TRUE;
    }
  }

  if ($incompatible) {
    $requirements['crop_media'] = [
      'title' => t('Crop API'),
      'value' => t('This branch of Crop API is not compatible with the version of Media Entity installed.'),
      'description' => t('This branch of Crop API is not compatible with the version of Media Entity installed.'),
      'severity' => REQUIREMENT_ERROR,
    ];
  }

  return $requirements;
}

/**
 * Delete orphaned crop entities.
 */
function crop_update_8001(&$sandbox) {
  // Unsure we have current element set to 0.
  if (!isset($sandbox['current'])) {
    $sandbox['current'] = 0;
    $sandbox['total'] = \Drupal::entityQuery('crop')
      ->count()
      ->execute();
  }

  $items_per_batch = 100;
  $crops = \Drupal::entityQuery('crop')
    ->sort('cid', 'ASC')
    ->range($sandbox['current'], $items_per_batch)
    ->execute();

  if (empty($crops)) {
    $sandbox['#finished'] = 1;
  }
  else {
    foreach ($crops as $cid) {
      /** @var \Drupal\crop\Entity\Crop $crop */
      $crop = Crop::load($cid);
      $files = \Drupal::entityQuery('file')
        ->condition('uri', $crop->get('uri')->value)
        ->count();

      // Checks if the file exist, if not exist delete this orphan crop.
      if (empty($files->execute())) {
        // Lets tell the site admin what we are doing.
        \Drupal::logger('crop_api')
          ->notice(
            'The orphaned crop @cid referring to image with URI @uri has been deleted.',
            ['@cid' => $cid, 'uri' => $crop->uri->value]
          );
        $crop->delete();
      }
      $sandbox['current']++;
    }
    $sandbox['#finished'] = $sandbox['current'] / $sandbox['total'];
  }
}

/**
 * Let Drupal know that there is a new config available.
 */
function crop_update_8002() {
  \Drupal::service('config.installer')
    ->installDefaultConfig('module', 'crop');
}