<?php

declare(strict_types=1);

namespace Drupal\Tests\field\Kernel;

use Drupal\entity_test\Entity\EntityTest;
use Drupal\field\Entity\FieldConfig;
use Drupal\field\Entity\FieldStorageConfig;
use PHPUnit\Framework\Attributes\Group;
use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;

/**
 * Tests field storages and fields deletion during config synchronization.
 *
 * @see \Drupal\field\ConfigImporterFieldPurger
 * @see field_config_import_steps_alter()
 */
#[Group('field')]
#[RunTestsInSeparateProcesses]
class FieldImportDeleteUninstallTest extends FieldKernelTestBase {

  /**
   * {@inheritdoc}
   */
  protected static $modules = ['telephone'];

  /**
   * {@inheritdoc}
   */
  protected function setUp(): void {
    parent::setUp();
    // Module uninstall requires users_data tables.
    // @see drupal_flush_all_caches()
    // @see user_modules_uninstalled()
    $this->installSchema('user', ['users_data']);
  }

  /**
   * Tests deleting field storages and fields as part of config import.
   */
  public function testImportDeleteUninstall(): void {
    // Create a field to delete to prove that
    // \Drupal\field\ConfigImporterFieldPurger does not purge fields that are
    // not related to the configuration synchronization.
    $unrelated_field_storage = FieldStorageConfig::create([
      'field_name' => 'field_int',
      'entity_type' => 'entity_test',
      'type' => 'integer',
    ]);
    $unrelated_field_storage->save();
    FieldConfig::create([
      'field_storage' => $unrelated_field_storage,
      'bundle' => 'entity_test',
    ])->save();

    // Create a telephone field for validation.
    $field_storage = FieldStorageConfig::create([
      'field_name' => 'field_test',
      'entity_type' => 'entity_test',
      'type' => 'telephone',
    ]);
    $field_storage->save();
    FieldConfig::create([
      'field_storage' => $field_storage,
      'bundle' => 'entity_test',
    ])->save();

    $entity = EntityTest::create();
    $value = '+0123456789';
    $entity->field_test = $value;
    $entity->field_int = '99';
    $entity->name->value = $this->randomMachineName();
    $entity->save();

    // Verify entity has been created properly.
    $id = $entity->id();
    $entity = EntityTest::load($id);
    $this->assertEquals($value, $entity->field_test->value);
    $this->assertEquals($value, $entity->field_test[0]->value);
    $this->assertEquals('99', $entity->field_int->value);

    // Delete unrelated field before copying configuration and running the
    // synchronization.
    $unrelated_field_storage->delete();

    $active = $this->container->get('config.storage');
    $sync = $this->container->get('config.storage.sync');
    $this->copyConfig($active, $sync);

    // Stage uninstall of the Telephone module.
    $core_extension = $this->config('core.extension')->get();
    unset($core_extension['module']['telephone']);
    $sync->write('core.extension', $core_extension);

    // Stage the field deletion.
    $sync->delete('field.storage.entity_test.field_test');
    $sync->delete('field.field.entity_test.entity_test.field_test');

    $steps = $this->configImporter()->initialize();
    $this->assertSame(['\\Drupal\\field\\ConfigImporterFieldPurger', 'process'], $steps[0], 'The additional process configuration synchronization step has been added.');

    // This will purge all the data, delete the field and uninstall the
    // Telephone module.
    $this->configImporter()->import();

    $this->assertFalse(\Drupal::moduleHandler()->moduleExists('telephone'));
    $this->assertNull(\Drupal::service('entity.repository')->loadEntityByUuid('field_storage_config', $field_storage->uuid()), 'The test field has been deleted by the configuration synchronization');
    $deleted_storages = \Drupal::state()->get('field.storage.deleted', []);
    $this->assertFalse(isset($deleted_storages[$field_storage->uuid()]), 'Telephone field has been completed removed from the system.');
    $this->assertTrue(isset($deleted_storages[$unrelated_field_storage->uuid()]), 'Unrelated field not purged by configuration synchronization.');
  }

  /**
   * Tests purging previously deleted fields and storages in config import.
   */
  public function testImportAlreadyDeletedUninstall(): void {
    // Create a telephone field for validation.
    $field_storage = FieldStorageConfig::create([
      'field_name' => 'field_test',
      'entity_type' => 'entity_test',
      'type' => 'telephone',
    ]);
    $field_storage->save();
    $field_storage_uuid = $field_storage->uuid();
    FieldConfig::create([
      'field_storage' => $field_storage,
      'bundle' => 'entity_test',
    ])->save();

    // Create 12 entities to ensure that the purging works as expected.
    for ($i = 0; $i < 12; $i++) {
      $entity = EntityTest::create();
      $value = '+0123456789';
      $entity->field_test = $value;
      $entity->name->value = $this->randomMachineName();
      $entity->save();

      // Verify entity has been created properly.
      $id = $entity->id();
      $entity = EntityTest::load($id);
      $this->assertEquals($value, $entity->field_test->value);
    }

    // Delete the field.
    $field_storage->delete();

    $active = $this->container->get('config.storage');
    $sync = $this->container->get('config.storage.sync');
    $this->copyConfig($active, $sync);

    // Stage uninstall of the Telephone module.
    $core_extension = $this->config('core.extension')->get();
    unset($core_extension['module']['telephone']);
    $sync->write('core.extension', $core_extension);

    $deleted_storages = \Drupal::state()->get('field.storage.deleted', []);
    $this->assertTrue(isset($deleted_storages[$field_storage_uuid]), 'Field has been deleted and needs purging before configuration synchronization.');

    $steps = $this->configImporter()->initialize();
    $this->assertSame(['\\Drupal\\field\\ConfigImporterFieldPurger', 'process'], $steps[0], 'The additional process configuration synchronization step has been added.');

    // This will purge all the data, delete the field and uninstall the
    // Telephone module.
    $this->configImporter()->import();

    $this->assertFalse(\Drupal::moduleHandler()->moduleExists('telephone'));
    $deleted_storages = \Drupal::state()->get('field.storage.deleted', []);
    $this->assertFalse(isset($deleted_storages[$field_storage_uuid]), 'Field has been completed removed from the system.');
  }

}
