class InstallerTranslationMultipleLanguageTest

class InstallerTranslationMultipleLanguageTest extends InstallerTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Switch to the multilingual testing profile.
     *
     * @var string
     */
    protected $profile = 'testing_multilingual';
    
    /**
     * {@inheritdoc}
     */
    protected function setUpLanguage() : void {
        // Place custom local translations in the translations directory.
        mkdir(DRUPAL_ROOT . '/' . $this->siteDirectory . '/files/translations', 0777, TRUE);
        file_put_contents(DRUPAL_ROOT . '/' . $this->siteDirectory . '/files/translations/drupal-8.0.0.de.po', $this->getPo('de'));
        file_put_contents(DRUPAL_ROOT . '/' . $this->siteDirectory . '/files/translations/drupal-8.0.0.es.po', $this->getPo('es'));
        parent::setUpLanguage();
    }
    
    /**
     * Returns the string for the test .po file.
     *
     * @param string $langcode
     *   The language code.
     *
     * @return string
     *   Contents for the test .po file.
     */
    protected function getPo($langcode) : string {
        return <<<PO
msgid ""
msgstr ""

msgid "Save and continue"
msgstr "Save and continue {<span class="php-variable">$langcode</span>}"

msgid "Anonymous"
msgstr "Anonymous {<span class="php-variable">$langcode</span>}"

msgid "Language"
msgstr "Language {<span class="php-variable">$langcode</span>}"

#: Testing site name configuration during the installer.
msgid "Drupal"
msgstr "Drupal"
PO;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function installParameters() {
        $params = parent::installParameters();
        $params['forms']['install_configure_form']['site_name'] = 'SITE_NAME_' . $this->langcode;
        return $params;
    }
    
    /**
     * Tests that translations ended up at the expected places.
     */
    public function testTranslationsLoaded() : void {
        // Ensure the title is correct.
        $this->assertEquals('SITE_NAME_' . $this->langcode, \Drupal::config('system.site')->get('name'));
        // Verify German and Spanish were configured.
        $this->drupalGet('admin/config/regional/language');
        $this->assertSession()
            ->pageTextContains('German');
        $this->assertSession()
            ->pageTextContains('Spanish');
        // If the installer was English or we used a profile that keeps English, we
        // expect that configured also. Otherwise English should not be configured
        // on the site.
        if ($this->langcode == 'en' || $this->profile == 'testing_multilingual_with_english') {
            $this->assertSession()
                ->pageTextContains('English');
        }
        else {
            $this->assertSession()
                ->pageTextNotContains('English');
        }
        // Verify the strings from the translation files were imported.
        $this->verifyImportedStringsTranslated();
        
        /** @var \Drupal\language\ConfigurableLanguageManager $language_manager */
        $language_manager = \Drupal::languageManager();
        // If the site was installed in a foreign language (only tested with German
        // in subclasses), then the active configuration should be updated and no
        // override should exist in German. Otherwise the German translation should
        // end up in overrides the same way as Spanish (which is not used as a site
        // installation language). English should be available based on profile
        // information and should be possible to add if not yet added, making
        // English overrides available.
        $config = \Drupal::config('user.settings');
        $override_de = $language_manager->getLanguageConfigOverride('de', 'user.settings');
        $override_en = $language_manager->getLanguageConfigOverride('en', 'user.settings');
        $override_es = $language_manager->getLanguageConfigOverride('es', 'user.settings');
        if ($this->langcode == 'de') {
            // Active configuration should be in German and no German override should
            // exist.
            $this->assertEquals('Anonymous de', $config->get('anonymous'));
            $this->assertEquals('de', $config->get('langcode'));
            $this->assertTrue($override_de->isNew());
            if ($this->profile == 'testing_multilingual_with_english') {
                // English is already added in this profile. Should make the override
                // available.
                $this->assertEquals('Anonymous', $override_en->get('anonymous'));
            }
            else {
                // English is not yet available.
                $this->assertTrue($override_en->isNew());
                // Adding English should make the English override available.
                $edit = [
                    'predefined_langcode' => 'en',
                ];
                $this->drupalGet('admin/config/regional/language/add');
                $this->submitForm($edit, 'Add language');
                $override_en = $language_manager->getLanguageConfigOverride('en', 'user.settings');
                $this->assertEquals('Anonymous', $override_en->get('anonymous'));
            }
            // Activate a module, to make sure that config is not overridden by module
            // installation.
            $edit = [
                'modules[views][enable]' => TRUE,
                'modules[filter][enable]' => TRUE,
            ];
            $this->drupalGet('admin/modules');
            $this->submitForm($edit, 'Install');
            // Verify the strings from the translation are still as expected.
            $this->verifyImportedStringsTranslated();
        }
        else {
            // Active configuration should be English.
            $this->assertEquals('Anonymous', $config->get('anonymous'));
            $this->assertEquals('en', $config->get('langcode'));
            // There should not be an English override.
            $this->assertTrue($override_en->isNew());
            // German should be an override.
            $this->assertEquals('Anonymous de', $override_de->get('anonymous'));
        }
        // Spanish is always an override (never used as installation language).
        $this->assertEquals('Anonymous es', $override_es->get('anonymous'));
    }
    
    /**
     * Helper function to verify that the expected strings are translated.
     */
    protected function verifyImportedStringsTranslated() : void {
        $test_samples = [
            'Save and continue',
            'Anonymous',
            'Language',
        ];
        $langcodes = [
            'de',
            'es',
        ];
        foreach ($test_samples as $sample) {
            foreach ($langcodes as $langcode) {
                $edit = [];
                $edit['langcode'] = $langcode;
                $edit['translation'] = 'translated';
                $edit['string'] = $sample;
                $this->drupalGet('admin/config/regional/translate');
                $this->submitForm($edit, 'Filter');
                $this->assertSession()
                    ->pageTextContains($sample . ' ' . $langcode);
            }
        }
    }

}