Issue #3282696 by sanduhrs: Port of l10n_community: Add project statistics block

<?php

namespace Drupal\l10n_community\Plugin\Block;

use Drupal\Core\Block\BlockBase;

use Drupal\Core\Link;

use Drupal\Core\Plugin\ContainerFactoryPluginInterface;

use Drupal\Core\Url;

use Drupal\l10n_community\L10nStatistics;

use Drupal\l10n_server\Entity\L10nServerRelease;

use Symfony\Component\DependencyInjection\ContainerInterface;

/**

 * Provides a project statistics block.

 *

 * @Block(

 *   id = "l10n_community_project_statistics",

 *   admin_label = @Translation("Project statistics"),

 *   category = @Translation("L10n")

 * )

 */

class ProjectStatisticsBlock extends BlockBase implements ContainerFactoryPluginInterface {

  /**

   * The l10n_community.statistics service.

   *

   * @var \Drupal\l10n_community\L10nStatistics

   */

  protected $statistics;

  /**

   * Constructs a new ProjectStatisticsBlock instance.

   *

   * @param array $configuration

   *   The plugin configuration, i.e. an array with configuration values keyed

   *   by configuration option name. The special key 'context' may be used to

   *   initialize the defined contexts by setting it to an array of context

   *   values keyed by context names.

   * @param string $plugin_id

   *   The plugin_id for the plugin instance.

   * @param mixed $plugin_definition

   *   The plugin implementation definition.

   * @param \Drupal\l10n_community\L10nStatistics $statistics

   *   The l10n_community.statistics service.

   */

  public function __construct(

      array $configuration,

      $plugin_id,

      $plugin_definition,

      L10nStatistics $statistics

  ) {

    parent::__construct(

      $configuration,

      $plugin_id,

      $plugin_definition

    );

    $this->statistics = $statistics;

  }

  /**

   * {@inheritdoc}

   */

  public static function create(

      ContainerInterface $container,

      array $configuration,

      $plugin_id,

      $plugin_definition

  ) {

    return new static(

      $configuration,

      $plugin_id,

      $plugin_definition,

      $container->get('l10n_community.statistics')

    );

  }

  /**

   * {@inheritdoc}

   */

  public function build() {

    /** @var \Drupal\l10n_server\Entity\L10nServerProjectInterface $project */

    if (!$project = \Drupal::routeMatch()->getParameter('l10n_server_project')) {

      return [];

    }

    $num_source = $this->statistics->getProjectStringCount($project);

    $release_ids = \Drupal::entityQuery('l10n_server_release')

      ->condition('pid', $project->id())

      ->execute();

    $releases = L10nServerRelease::loadMultiple($release_ids);

    $num_parsed = 0;

    foreach ($releases as $release) {

      if ($release->getLastParsed() > 0) {

        $num_parsed++;

      }

    }

    $num_releases = count($releases);

    $num_warnings = $this->statistics->getProjectWarningsCount($project);

    // Build list of links for summary.

    $items = [];

    if ($project->getHomepage()) {

      $items[] = $this->t('Project home: <a href="@project_home">@project_home</a>', [

        '@project_name' => $project->label(),

        '@project_home' => $project->getHomepage(),

      ]);

    }

    if ($num_releases === 0) {

      // If we don't know of any releases, we do not list source string or

      // warning information, since we should have all zeros there too. This

      // summarizes our stand in short, that we do not yet have data here.

      $items[] = $this->t('No releases known yet');

    }

    else {

      $items[] = Link::fromTextAndUrl($this->formatPlural($num_parsed, '1 release parsed', '@count releases parsed') . ' (' . $this->formatPlural($num_releases, '1 known', '@count known') . ')', Url::fromUri('internal:/project/1/releases'))->toString();

      $items[] = ($num_source == 0 ? $this->t('No source strings found') : $this->formatPlural($num_source, '1 source string in total', '@count source strings in total'));

      $items[] = ($num_warnings == 0 ? $this->t('No source code warnings') : $this->formatPlural($num_warnings, '1 source code warning', '@count source code warnings'));

    }

    $build['content'] = [

      '#theme' => 'item_list',

      '#items' => $items,

    ];

    return $build;

  }

}