<?php

namespace Drupal\Tests\config\Functional;

use Drupal\Core\Config\StorageComparer;
use Drupal\Core\Entity\ContentEntityTypeInterface;
use Drupal\Tests\SchemaCheckTestTrait;
use Drupal\Tests\system\Functional\Module\ModuleTestBase;

/**
 * Tests the largest configuration import possible with all available modules.
 *
 * @group config
 */
class ConfigImportAllTest extends ModuleTestBase {

  use SchemaCheckTestTrait;

  /**
   * A user with the 'synchronize configuration' permission.
   *
   * @var \Drupal\user\UserInterface
   */
  protected $webUser;

  /**
   * The profile to install as a basis for testing.
   *
   * Using the standard profile as this has a lot of additional configuration.
   *
   * @var string
   */
  protected $profile = 'standard';

  protected function setUp() {
    parent::setUp();

    $this->webUser = $this->drupalCreateUser(['synchronize configuration']);
    $this->drupalLogin($this->webUser);
  }

  /**
   * Tests that a fixed set of modules can be installed and uninstalled.
   */
  public function testInstallUninstall() {

    // Get a list of modules to enable.
    $all_modules = system_rebuild_module_data();
    $all_modules = array_filter($all_modules, function ($module) {
      // Filter contrib, hidden, already enabled modules and modules in the
      // Testing package.
      if ($module->origin !== 'core' || !empty($module->info['hidden']) || $module->status == TRUE || $module->info['package'] == 'Testing') {
        return FALSE;
      }
      return TRUE;
    });

    // Install every module possible.
    \Drupal::service('module_installer')->install(array_keys($all_modules));

    $this->assertModules(array_keys($all_modules), TRUE);
    foreach ($all_modules as $module => $info) {
      $this->assertModuleConfig($module);
      $this->assertModuleTablesExist($module);
    }

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

    $this->resetAll();

    // Delete all entities provided by modules that prevent uninstallation. For
    // example, if any content entity exists its provider cannot be uninstalled.
    // So deleting all taxonomy terms allows the Taxonomy to be uninstalled.
    // Additionally, every field is deleted so modules can be uninstalled. For
    // example, if a comment field exists then Comment cannot be uninstalled.
    $entity_type_manager = \Drupal::entityTypeManager();
    foreach ($entity_type_manager->getDefinitions() as $entity_type) {
      if (($entity_type instanceof ContentEntityTypeInterface || in_array($entity_type->id(), ['field_storage_config', 'filter_format'], TRUE))
        && !in_array($entity_type->getProvider(), ['system', 'user'], TRUE)) {
        $storage = $entity_type_manager->getStorage($entity_type->id());
        $storage->delete($storage->loadMultiple());
      }
    }

    // Purge the field data.
    field_purge_batch(1000);

    $all_modules = system_rebuild_module_data();

    // Ensure that only core required modules and the install profile can not be uninstalled.
    $validation_reasons = \Drupal::service('module_installer')->validateUninstall(array_keys($all_modules));
    $this->assertEqual(['system', 'user', 'standard'], array_keys($validation_reasons));

    $modules_to_uninstall = array_filter($all_modules, function ($module) use ($validation_reasons) {
      // Filter required and not enabled modules.
      if (!empty($module->info['required']) || $module->status == FALSE) {
        return FALSE;
      }
      return TRUE;
    });

    // Can not uninstall config and use admin/config/development/configuration!
    unset($modules_to_uninstall['config']);

    $this->assertTrue(isset($modules_to_uninstall['comment']), 'The comment module will be disabled');
    $this->assertTrue(isset($modules_to_uninstall['file']), 'The File module will be disabled');
    $this->assertTrue(isset($modules_to_uninstall['editor']), 'The Editor module will be disabled');

    // Uninstall all modules that can be uninstalled.
    \Drupal::service('module_installer')->uninstall(array_keys($modules_to_uninstall));

    $this->assertModules(array_keys($modules_to_uninstall), FALSE);
    foreach ($modules_to_uninstall as $module => $info) {
      $this->assertNoModuleConfig($module);
      $this->assertModuleTablesDoNotExist($module);
    }

    // Import the configuration thereby re-installing all the modules.
    $this->drupalPostForm('admin/config/development/configuration', [], t('Import all'));
    // Modules have been installed that have services.
    $this->rebuildContainer();

    // Check that there are no errors.
    $this->assertIdentical($this->configImporter()->getErrors(), []);

    // Check that all modules that were uninstalled are now reinstalled.
    $this->assertModules(array_keys($modules_to_uninstall), TRUE);
    foreach ($modules_to_uninstall as $module => $info) {
      $this->assertModuleConfig($module);
      $this->assertModuleTablesExist($module);
    }

    // Ensure that we have no configuration changes to import.
    $storage_comparer = new StorageComparer(
      $this->container->get('config.storage.sync'),
      $this->container->get('config.storage')
    );
    $this->assertIdentical($storage_comparer->createChangelist()->getChangelist(), $storage_comparer->getEmptyChangelist());

    // Now we have all configuration imported, test all of them for schema
    // conformance. Ensures all imported default configuration is valid when
    // all modules are enabled.
    $names = $this->container->get('config.storage')->listAll();
    /** @var \Drupal\Core\Config\TypedConfigManagerInterface $typed_config */
    $typed_config = $this->container->get('config.typed');
    foreach ($names as $name) {
      $config = $this->config($name);
      $this->assertConfigSchema($typed_config, $name, $config->get());
    }
  }

}
