<?php

namespace Drupal\uw_cfg_common\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\path_alias\AliasManager;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpFoundation\Response;

/**
 * Provides CSV files for specific UW sites.
 */
class UwDownloadCsvController extends ControllerBase {

  /**
   * Entity type manager from the core.
   *
   * @var Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * The path alias.
   *
   * @var \Drupal\path_alias\AliasManager
   */
  protected $pathAlias;

  /**
   * CSV Report constructor.
   *
   * @param Drupal\Core\Entity\EntityTypeManagerInterface $entityTypeManager
   *   The entity type manager.
   * @param Drupal\path_alias\AliasManager $pathAlias
   *   The path alias.
   */
  public function __construct(
    EntityTypeManagerInterface $entityTypeManager,
    AliasManager $pathAlias
  ) {
    $this->entityTypeManager = $entityTypeManager;
    $this->pathAlias = $pathAlias;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('entity_type.manager'),
      $container->get('path_alias.manager')
    );
  }

  /**
   * Provides a CSV file for content on a site.
   *
   * @return Symfony\Component\HttpFoundation\Response
   *   The page response.
   *
   * @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
   * @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
   */
  public function uwContentReport() {

    // Get all the nodes.
    $nodes = $this->entityTypeManager->getStorage('node')->loadMultiple();

    // Just in case there are no nodes, there should always
    // be a home page though, this is just to ensure no errors.
    $response = NULL;

    if ($nodes) {

      // The header of the CSV.
      $data = [
        $this->t('Node ID'),
        $this->t('Title'),
        $this->t('Content type'),
        $this->t('Path'),
        $this->t('Published'),
        $this->t('Created'),
        $this->t('Last updated'),
      ];

      // Put header for CSV into format to be used in CSV.
      $rows[] = implode(',', $data);

      // Step through each of the nodes and get the info.
      foreach ($nodes as $node) {

        // Pull out the info about the node.
        $data = [
          'nid' => $node->id(),
          'title' => '"' . $node->getTitle() . '"',
          'type' => $node->type->entity->label(),
          'path' => $this->pathAlias->getAliasByPath('/node/' . $node->id()),
          'published' => $node->status->value,
          'created' => date('Y-d-m G:i', $node->getCreatedTime()),
          'updated' => date('Y-d-m G:i', $node->getChangedTime()),
        ];

        // Store the node info for use later in the CSV.
        $rows[] = implode(',', $data);
      }

      // Put the info into a large CSV format.
      $content = implode("\n", $rows);

      // Create the response for the CSV page.
      $response = new Response($content);

      // Set the headers for the CSV.
      $response->headers->set('Content-Type', 'text/csv');
      $response->headers->set('Content-Disposition', 'attachment; filename="content_report.csv"');
    }

    return $response;
  }

}