<?php

namespace Drupal\migrate_drupal\Plugin;

use Drupal\Component\Plugin\Exception\PluginNotFoundException;
use Drupal\migrate\Plugin\Exception\BadPluginDefinitionException;
use Drupal\migrate\Plugin\MigratePluginManager;
use Drupal\migrate\Plugin\MigrationInterface;

/**
 * Plugin manager for migrate field plugins.
 *
 * @see \Drupal\migrate_drupal\Plugin\MigrateFieldInterface
 * @see \Drupal\migrate\Annotation\MigrateField
 * @see plugin_api
 *
 * @ingroup migration
 */
class MigrateFieldPluginManager extends MigratePluginManager implements MigrateFieldPluginManagerInterface {

  /**
   * The default version of core to use for field plugins.
   *
   * These plugins were initially only built and used for Drupal 6 fields.
   * Having been extended for Drupal 7 with a "core" annotation, we fall back to
   * Drupal 6 where none exists.
   */
  const DEFAULT_CORE_VERSION = 6;

  /**
   * {@inheritdoc}
   */
  public function getPluginIdFromFieldType($field_type, array $configuration = [], MigrationInterface $migration = NULL) {
    $core = static::DEFAULT_CORE_VERSION;
    if (!empty($configuration['core'])) {
      $core = $configuration['core'];
    }
    elseif (!empty($migration->getPluginDefinition()['migration_tags'])) {
      foreach ($migration->getPluginDefinition()['migration_tags'] as $tag) {
        if ($tag == 'Drupal 7') {
          $core = 7;
        }
      }
    }

    $definitions = $this->getDefinitions();
    foreach ($definitions as $plugin_id => $definition) {
      if (in_array($core, $definition['core'])) {
        if (array_key_exists($field_type, $definition['type_map']) || $field_type === $plugin_id) {
          return $plugin_id;
        }
      }
    }
    throw new PluginNotFoundException($field_type);
  }

  /**
   * {@inheritdoc}
   */
  public function processDefinition(&$definition, $plugin_id) {
    parent::processDefinition($definition, $plugin_id);

    foreach (['core', 'source_module', 'destination_module'] as $required_property) {
      if (empty($definition[$required_property])) {
        throw new BadPluginDefinitionException($plugin_id, $required_property);
      }
    }
  }

}