<?php

/**
 * @file
 * Install tasks for flexslider_example.
 */

use Drupal\node\Entity\Node;
use Drupal\Core\File\FileSystemInterface;
use Drupal\node\NodeInterface;

/**
 * Implements hook_install().
 */
function flexslider_example_install() {
  // Generate content for examples.
  flexslider_example_generate_content();
}

/**
 * Implements hook_uninstall().
 *
 * Deletes all content and configuration installed by this module.
 */
function flexslider_example_uninstall() {
  // Collect all of the example nodes and delete them.
  $storage_handler = \Drupal::entityTypeManager()->getStorage('node');
  $nodes = $storage_handler->loadByProperties(['type' => 'flexslider_example']);

  // Ensure we have some nodes before deleting.
  if (!empty($nodes)) {
    $storage_handler->delete($nodes);
    \Drupal::logger('flexslider')->info(t('Deleted @count flexslider_example nodes', ['@count' => count($nodes)]), []);
  }

  // Remove Flexslider node type.
  $content_type = \Drupal::entityTypeManager()->getStorage('node_type')->load('flexslider_example');
  if (!empty($content_type)) {
    $content_type->delete();
  }

  // Now delete all of the configuration installed by this module.
  $dir = drupal_get_path('module', 'flexslider_example') . '/config/install';
  $files = \Drupal::service('file_system')->scanDirectory($dir, '/.*/');
  foreach ($files as $file) {
    \Drupal::configFactory()->getEditable($file->name)->delete();
  }
  \Drupal::logger('flexslider')->info(t('Deleted flexslider example configuration'), []);

}

/**
 * Generate the sample content.
 */
function flexslider_example_generate_content() {

  $dir = drupal_get_path('module', 'flexslider') . '/assets/images';
  $images = \Drupal::service('file_system')->scanDirectory($dir, '/flexslider-sample/');

  foreach ($images as $image) {

    $filename = $image->filename;

    $file_temp = file_get_contents($image->uri);
    $file_temp = file_save_data($file_temp, 'public://' . $filename, FileSystemInterface::EXISTS_RENAME);

    // Create node object with attached file.
    $node = Node::create([
      'type'  => 'flexslider_example',
      'title'  => ucfirst(str_replace('-', ' ', $image->name)),
      'promote' => NodeInterface::NOT_PROMOTED,
      'created' => \Drupal::time()->getRequestTime(),
      'changed' => \Drupal::time()->getRequestTime(),
      'uid' => 1,
      'field_flexslider_example_image' => [
        'target_id' => $file_temp->id(),
      ],
    ]);

    try {
      $result = $node->save();
      if ($result == SAVED_NEW) {
        $saved = 'Created';
      }
      elseif ($result == SAVED_UPDATED) {
        $saved = 'Updated';
      }
      else {
        throw new Exception(t('Unknown value [@result] was returned', ['@result' => $result]));
      }

      \Drupal::logger('flexslider')->info(t('@saved flexslider_example node @nid', ['@saved' => $saved, '@nid' => $node->id()]), []);

    }
    catch (Exception $e) {
      \Drupal::logger('flexslider')->error(t('Node create failure: @msg', ['@msg' => $e->getMessage()]), []);
    }

  }
}