<?php

namespace Drupal\premium_maps;

use Drupal\Core\Entity\EntityInterface;

class Marker {

  private static $settings;

  /** @var \Drupal\Core\Entity\EntityInterface $entity */
  private $entity;

  public function __construct(EntityInterface $entity) {
    $this->entity = $entity;
    $this->title = $entity->label();
  }

  // Retrieve the map settings
  protected function getSettings() {
    if (!empty(self::$settings)) {
      return self::$settings;
    }

    self::$settings = \Drupal::config('premium_maps.map_settings');
    return self::$settings;
  }

  /**
   * Return the maker as an array.
   *
   * @return array
   *  Array containing the marker.
   */
  public function toArray(): array {
    $content = $this->getContent();

    return [
      'location' => [
        'lat' => $this->getLat(),
        'long' => $this->getLon(),
      ],
      'title' => $this->getTitle(),
      'content' => \Drupal::service('renderer')->render($content),
      'icon' => $this->getIcon(),
      'category' => $this->getCategoryId(),
    ];
  }

  /**
   * Return the name of the field containing the coordinates.
   *
   * @return mixed|null
   */
  private function getCoordinatesField() {
    $settings = $this->getSettings();
    return $settings->get('maps_config')[$this->entity->bundle()]['field'] ??
      NULL;
  }

  /**
   * The the marker title.
   *
   * @return string
   *   The title.
   */
  public function getTitle(): string {
    return $this->entity->label();
  }

  /**
   * Get the markers latitude.
   *
   * @return mixed
   *   The latitude.
   */
  public function getLat() {
    return $this->entity->get($this->getCoordinatesField())->lat;
  }

  /**
   * Get the markers longitude.
   *
   * @return mixed
   *   The longitude.
   */
  public function getLon() {
    return $this->entity->get($this->getCoordinatesField())->lon;
  }

  /**
   * Get the content on the entity.
   *
   * The view mode map in used.
   *
   * @return array
   *   The content.
   */
  public function getContent() {
    $view_builder = \Drupal::entityTypeManager()
      ->getViewBuilder($this->entity->getEntityTypeId());
    try {
      return $view_builder->view(
        $this->entity, 'map', $this->entity->language()->getId()
      );
    } catch (\Exception $e) {
      \Drupal::logger('map')->error($e->getMessage());
    }

    return [];
  }

  /**
   * Get the icon defined on the term.
   *
   * @return mixed
   *   The icon
   */
  public function getIcon() {
    if ($this->entity->hasField('map_marker_type')
      && !$this->entity->get('map_marker_type')->isEmpty()
    ) {
      return $this->entity->get('map_marker_type')
        ->entity->get('field_marker_map_icon')->value;
    }

    return NULL;
  }

  /**
   * Get the icon defined on the term.
   *
   * @return mixed
   *   The category id.
   */
  public function getCategoryId() {
    if ($this->entity->hasField('map_marker_type')) {
      return $this->entity->get('map_marker_type')->target_id;
    }

    return NULL;
  }

}