<?php

namespace Drupal\embed\EmbedType;

use Drupal\Component\Utility\NestedArray;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Plugin\PluginBase;

/**
 * Defines a base implementation that most embed type plugins will extend.
 *
 * @ingroup embed_api
 */
abstract class EmbedTypeBase extends PluginBase implements EmbedTypeInterface {

  /**
   * {@inheritdoc}
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->configuration = NestedArray::mergeDeep($this->defaultConfiguration(), $this->configuration);
  }

  /**
   * {@inheritdoc}
   */
  public function calculateDependencies() {
    return [];
  }

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [];
  }

  /**
   * {@inheritdoc}
   */
  public function getConfiguration() {
    return $this->configuration;
  }

  /**
   * {@inheritdoc}
   */
  public function getConfigurationValue($name, $default = NULL) {
    $configuration = $this->getConfiguration();
    if (array_key_exists($name, $configuration)) {
      return $configuration[$name];
    }
    else {
      return $default;
    }
  }

  /**
   * {@inheritdoc}
   */
  public function setConfiguration(array $configuration) {
    $this->configuration = $configuration;
  }

  /**
   * {@inheritdoc}
   */
  public function setConfigurationValue($name, $value) {
    $this->configuration[$name] = $value;
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
    // Do nothing.
  }

  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
    if (!$form_state->hasAnyErrors()) {
      $this->setConfiguration(
        array_intersect_key(
          $form_state->getValues(),
          $this->defaultConfiguration()
        )
      );
    }
  }

}