class ConfigTranslationUiTestBase

abstract class ConfigTranslationUiTestBase extends BrowserTestBase {
    use AssertMailTrait;
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Languages to enable.
     *
     * @var array
     */
    protected $langcodes = [
        'fr',
        'ta',
        'tyv',
    ];
    
    /**
     * Administrator user for tests.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $adminUser;
    
    /**
     * Translator user for tests.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $translatorUser;
    
    /**
     * String translation storage object.
     *
     * @var \Drupal\locale\StringStorageInterface
     */
    protected $localeStorage;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'block',
        'config_translation',
        'config_translation_test',
        'contact',
        'contact_test',
        'contextual',
        'entity_test',
        'field_test',
        'field_ui',
        'filter',
        'filter_test',
        'node',
        'views',
        'views_ui',
        'menu_ui',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $translator_permissions = [
            'translate configuration',
        ];
        
        /** @var \Drupal\filter\FilterFormatInterface $filter_test_format */
        $filter_test_format = FilterFormat::load('filter_test');
        
        /** @var \Drupal\filter\FilterFormatInterface $filtered_html_format */
        $filtered_html_format = FilterFormat::load('filtered_html');
        
        /** @var \Drupal\filter\FilterFormatInterface $full_html_format */
        $full_html_format = FilterFormat::load('full_html');
        $admin_permissions = array_merge($translator_permissions, [
            'administer languages',
            'administer site configuration',
            'link to any page',
            'administer contact forms',
            'administer filters',
            $filtered_html_format->getPermissionName(),
            $full_html_format->getPermissionName(),
            $filter_test_format->getPermissionName(),
            'access site-wide contact form',
            'access contextual links',
            'administer views',
            'administer account settings',
            'administer themes',
            'bypass node access',
            'administer content types',
            'translate interface',
        ]);
        // Create and log in user.
        $this->translatorUser = $this->drupalCreateUser($translator_permissions);
        $this->adminUser = $this->drupalCreateUser($admin_permissions);
        // Add languages.
        foreach ($this->langcodes as $langcode) {
            ConfigurableLanguage::createFromLangcode($langcode)->save();
        }
        $this->localeStorage = $this->container
            ->get('locale.storage');
        $this->drupalPlaceBlock('local_tasks_block');
        $this->drupalPlaceBlock('page_title_block');
    }
    
    /**
     * Gets translation from locale storage.
     *
     * @param $config_name
     *   Configuration object.
     * @param $key
     *   Translation configuration field key.
     * @param $langcode
     *   String language code to load translation.
     *
     * @return bool|mixed
     *   Returns translation if exists, FALSE otherwise.
     */
    protected function getTranslation($config_name, $key, $langcode) {
        $settings_locations = $this->localeStorage
            ->getLocations([
            'type' => 'configuration',
            'name' => $config_name,
        ]);
        $this->assertNotEmpty($settings_locations, "{$config_name} should have configuration locations.");
        if ($settings_locations) {
            $source = $this->container
                ->get('config.factory')
                ->get($config_name)
                ->get($key);
            $source_string = $this->localeStorage
                ->findString([
                'source' => $source,
                'type' => 'configuration',
            ]);
            $this->assertNotEmpty($source_string, "{$config_name}.{$key} should have a source string.");
            if ($source_string) {
                $conditions = [
                    'lid' => $source_string->lid,
                    'language' => $langcode,
                ];
                $translations = $this->localeStorage
                    ->getTranslations($conditions + [
                    'translated' => TRUE,
                ]);
                return reset($translations);
            }
        }
        return FALSE;
    }
    
    /**
     * Sets site name and slogan for default language, helps in tests.
     *
     * @param string $site_name
     *   The site name.
     * @param string $site_slogan
     *   The site slogan.
     */
    protected function setSiteInformation($site_name, $site_slogan) {
        $edit = [
            'site_name' => $site_name,
            'site_slogan' => $site_slogan,
        ];
        $this->drupalGet('admin/config/system/site-information');
        $this->submitForm($edit, 'Save configuration');
        $this->assertSession()
            ->pageTextContains('The configuration options have been saved.');
    }
    
    /**
     * Asserts that a textarea with a given ID has been disabled from editing.
     *
     * @param string $id
     *   The HTML ID of the textarea.
     *
     * @internal
     */
    protected function assertDisabledTextarea(string $id) : void {
        $textarea = $this->assertSession()
            ->fieldDisabled($id);
        $this->assertSame('textarea', $textarea->getTagName());
        $this->assertSame('This field has been disabled because you do not have sufficient permissions to edit it.', $textarea->getText());
        // Make sure the text format select is not shown.
        $select_id = str_replace('value', 'format--2', $id);
        $xpath = $this->assertSession()
            ->buildXPathQuery('//select[@id=:id]', [
            ':id' => $select_id,
        ]);
        $this->assertSession()
            ->elementNotExists('xpath', $xpath);
    }
    
    /**
     * Helper function that returns a .po file with a given number of plural forms.
     */
    public function getPoFile($plurals) {
        $po_file = [];
        $po_file[1] = <<<EOF
msgid ""
msgstr ""
"Project-Id-Version: Drupal 8\\n"
"MIME-Version: 1.0\\n"
"Content-Type: text/plain; charset=UTF-8\\n"
"Content-Transfer-Encoding: 8bit\\n"
"Plural-Forms: nplurals=1; plural=0;\\n"
EOF;
        $po_file[2] = <<<EOF
msgid ""
msgstr ""
"Project-Id-Version: Drupal 8\\n"
"MIME-Version: 1.0\\n"
"Content-Type: text/plain; charset=UTF-8\\n"
"Content-Transfer-Encoding: 8bit\\n"
"Plural-Forms: nplurals=2; plural=(n>1);\\n"
EOF;
        $po_file[4] = <<<EOF
msgid ""
msgstr ""
"Project-Id-Version: Drupal 8\\n"
"MIME-Version: 1.0\\n"
"Content-Type: text/plain; charset=UTF-8\\n"
"Content-Transfer-Encoding: 8bit\\n"
"Plural-Forms: nplurals=4; plural=(((n%100)==1)?(0):(((n%100)==2)?(1):((((n%100)==3)||((n%100)==4))?(2):3)));\\n"
EOF;
        return $po_file[$plurals];
    }

}