<?php

namespace Drupal\Tests\config\Functional;

use Drupal\Core\Config\PreExistingConfigException;
use Drupal\Core\Config\StorageInterface;
use Drupal\language\Entity\ConfigurableLanguage;
use Drupal\Tests\BrowserTestBase;

/**
 * Tests installation and removal of configuration objects in install, disable
 * and uninstall functionality.
 *
 * @group config
 */
class ConfigInstallWebTest extends BrowserTestBase {

  /**
   * The admin user used in this test.
   */
  protected $adminUser;

  /**
   * {@inheritdoc}
   */
  protected function setUp() {
    parent::setUp();

    $this->adminUser = $this->drupalCreateUser(['administer modules', 'administer themes', 'administer site configuration']);

    // Ensure the global variable being asserted by this test does not exist;
    // a previous test executed in this request/process might have set it.
    unset($GLOBALS['hook_config_test']);
  }

  /**
   * Tests module re-installation.
   */
  public function testIntegrationModuleReinstallation() {
    $default_config = 'config_integration_test.settings';
    $default_configuration_entity = 'config_test.dynamic.config_integration_test';

    // Install the config_test module we're integrating with.
    \Drupal::service('module_installer')->install(['config_test']);

    // Verify the configuration does not exist prior to installation.
    $config_static = $this->config($default_config);
    $this->assertIdentical($config_static->isNew(), TRUE);
    $config_entity = $this->config($default_configuration_entity);
    $this->assertIdentical($config_entity->isNew(), TRUE);

    // Install the integration module.
    \Drupal::service('module_installer')->install(['config_integration_test']);
    $this->resetAll();

    // Verify that default module config exists.
    \Drupal::configFactory()->reset($default_config);
    \Drupal::configFactory()->reset($default_configuration_entity);
    $config_static = $this->config($default_config);
    $this->assertIdentical($config_static->isNew(), FALSE);
    $this->assertIdentical($config_static->get('foo'), 'default setting');
    $config_entity = $this->config($default_configuration_entity);
    $this->assertIdentical($config_entity->isNew(), FALSE);
    $this->assertIdentical($config_entity->get('label'), 'Default integration config label');

    // Customize both configuration objects.
    $config_static->set('foo', 'customized setting')->save();
    $config_entity->set('label', 'Customized integration config label')->save();

    // @todo FIXME: Setting config keys WITHOUT SAVING retains the changed config
    //   object in memory. Every new call to $this->config() MUST revert in-memory changes
    //   that haven't been saved!
    //   In other words: This test passes even without this reset, but it shouldn't.
    $this->container->get('config.factory')->reset();

    // Disable and uninstall the integration module.
    $this->container->get('module_installer')->uninstall(['config_integration_test']);

    // Verify the integration module's config was uninstalled.
    $config_static = $this->config($default_config);
    $this->assertIdentical($config_static->isNew(), TRUE);

    // Verify the integration config still exists.
    $config_entity = $this->config($default_configuration_entity);
    $this->assertIdentical($config_entity->isNew(), FALSE);
    $this->assertIdentical($config_entity->get('label'), 'Customized integration config label');

    // Reinstall the integration module.
    try {
      \Drupal::service('module_installer')->install(['config_integration_test']);
      $this->fail('Expected PreExistingConfigException not thrown.');
    }
    catch (PreExistingConfigException $e) {
      $this->assertEqual($e->getExtension(), 'config_integration_test');
      $this->assertEqual($e->getConfigObjects(), [StorageInterface::DEFAULT_COLLECTION => ['config_test.dynamic.config_integration_test']]);
      $this->assertEqual($e->getMessage(), 'Configuration objects (config_test.dynamic.config_integration_test) provided by config_integration_test already exist in active configuration');
    }

    // Delete the configuration entity so that the install will work.
    $config_entity->delete();
    \Drupal::service('module_installer')->install(['config_integration_test']);

    // Verify the integration module's config was re-installed.
    \Drupal::configFactory()->reset($default_config);
    \Drupal::configFactory()->reset($default_configuration_entity);
    $config_static = $this->config($default_config);
    $this->assertIdentical($config_static->isNew(), FALSE);
    $this->assertIdentical($config_static->get('foo'), 'default setting');

    // Verify the integration config is using the default.
    $config_entity = \Drupal::config($default_configuration_entity);
    $this->assertIdentical($config_entity->isNew(), FALSE);
    $this->assertIdentical($config_entity->get('label'), 'Default integration config label');
  }

  /**
   * Tests pre-existing configuration detection.
   */
  public function testPreExistingConfigInstall() {
    $this->drupalLogin($this->adminUser);

    // Try to install config_install_fail_test and config_test. Doing this
    // will install the config_test module first because it is a dependency of
    // config_install_fail_test.
    // @see \Drupal\system\Form\ModulesListForm::submitForm()
    $this->drupalPostForm('admin/modules', ['modules[config_test][enable]' => TRUE, 'modules[config_install_fail_test][enable]' => TRUE], t('Install'));
    $this->assertRaw('Unable to install Configuration install fail test, <em class="placeholder">config_test.dynamic.dotted.default</em> already exists in active configuration.');

    // Uninstall the config_test module to test the confirm form.
    $this->drupalPostForm('admin/modules/uninstall', ['uninstall[config_test]' => TRUE], t('Uninstall'));
    $this->drupalPostForm(NULL, [], t('Uninstall'));

    // Try to install config_install_fail_test without selecting config_test.
    // The user is shown a confirm form because the config_test module is a
    // dependency.
    // @see \Drupal\system\Form\ModulesListConfirmForm::submitForm()
    $this->drupalPostForm('admin/modules', ['modules[config_install_fail_test][enable]' => TRUE], t('Install'));
    $this->drupalPostForm(NULL, [], t('Continue'));
    $this->assertRaw('Unable to install Configuration install fail test, <em class="placeholder">config_test.dynamic.dotted.default</em> already exists in active configuration.');

    // Test that collection configuration clashes during a module install are
    // reported correctly.
    \Drupal::service('module_installer')->install(['language']);
    $this->rebuildContainer();
    ConfigurableLanguage::createFromLangcode('fr')->save();
    \Drupal::languageManager()
      ->getLanguageConfigOverride('fr', 'config_test.dynamic.dotted.default')
      ->set('label', 'Je suis Charlie')
      ->save();

    $this->drupalPostForm('admin/modules', ['modules[config_install_fail_test][enable]' => TRUE], t('Install'));
    $this->assertRaw('Unable to install Configuration install fail test, <em class="placeholder">config_test.dynamic.dotted.default, language/fr/config_test.dynamic.dotted.default</em> already exist in active configuration.');

    // Test installing a theme through the UI that has existing configuration.
    // This relies on the fact the config_test has been installed and created
    // the config_test.dynamic.dotted.default configuration and the translation
    // override created still exists.
    $this->drupalGet('admin/appearance');
    $url = $this->xpath("//a[contains(@href,'config_clash_test_theme') and contains(@href,'/install?')]/@href")[0];
    $this->drupalGet($this->getAbsoluteUrl($url->getText()));
    $this->assertRaw('Unable to install config_clash_test_theme, <em class="placeholder">config_test.dynamic.dotted.default, language/fr/config_test.dynamic.dotted.default</em> already exist in active configuration.');

    // Test installing a theme through the API that has existing configuration.
    try {
      \Drupal::service('theme_handler')->install(['config_clash_test_theme']);
      $this->fail('Expected PreExistingConfigException not thrown.');
    }
    catch (PreExistingConfigException $e) {
      $this->assertEqual($e->getExtension(), 'config_clash_test_theme');
      $this->assertEqual($e->getConfigObjects(), [StorageInterface::DEFAULT_COLLECTION => ['config_test.dynamic.dotted.default'], 'language.fr' => ['config_test.dynamic.dotted.default']]);
      $this->assertEqual($e->getMessage(), 'Configuration objects (config_test.dynamic.dotted.default, language/fr/config_test.dynamic.dotted.default) provided by config_clash_test_theme already exist in active configuration');
    }
  }

  /**
   * Tests unmet dependencies detection.
   */
  public function testUnmetDependenciesInstall() {
    $this->drupalLogin($this->adminUser);
    // We need to install separately since config_install_dependency_test does
    // not depend on config_test and order is important.
    $this->drupalPostForm('admin/modules', ['modules[config_test][enable]' => TRUE], t('Install'));
    $this->drupalPostForm('admin/modules', ['modules[config_install_dependency_test][enable]' => TRUE], t('Install'));
    $this->assertRaw('Unable to install <em class="placeholder">Config install dependency test</em> due to unmet dependencies: <em class="placeholder">config_test.dynamic.other_module_test_with_dependency (config_other_module_config_test, config_test.dynamic.dotted.english)</em>');

    $this->drupalPostForm('admin/modules', ['modules[config_test_language][enable]' => TRUE], t('Install'));
    $this->drupalPostForm('admin/modules', ['modules[config_install_dependency_test][enable]' => TRUE], t('Install'));
    $this->assertRaw('Unable to install <em class="placeholder">Config install dependency test</em> due to unmet dependencies: <em class="placeholder">config_test.dynamic.other_module_test_with_dependency (config_other_module_config_test)</em>');

    $this->drupalPostForm('admin/modules', ['modules[config_other_module_config_test][enable]' => TRUE], t('Install'));
    $this->drupalPostForm('admin/modules', ['modules[config_install_dependency_test][enable]' => TRUE], t('Install'));
    $this->rebuildContainer();
    $this->assertTrue(entity_load('config_test', 'other_module_test_with_dependency'), 'The config_test.dynamic.other_module_test_with_dependency configuration has been created during install.');
  }

  /**
   * Tests config_requirements().
   */
  public function testConfigModuleRequirements() {
    $this->drupalLogin($this->adminUser);
    $this->drupalPostForm('admin/modules', ['modules[config][enable]' => TRUE], t('Install'));

    $directory = config_get_config_directory(CONFIG_SYNC_DIRECTORY);
    file_unmanaged_delete_recursive($directory);
    $this->drupalGet('/admin/reports/status');
    $this->assertRaw(t('The directory %directory does not exist.', ['%directory' => $directory]));
  }

}