class LocalePluralFormatTest

class LocalePluralFormatTest extends BrowserTestBase {
    
    /**
     * An admin user.
     *
     * @var \Drupal\user\Entity\User
     */
    protected $adminUser;
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'locale',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->adminUser = $this->drupalCreateUser([
            'administer languages',
            'translate interface',
            'access administration pages',
        ]);
        $this->drupalLogin($this->adminUser);
    }
    
    /**
     * Tests locale_get_plural() and \Drupal::translation()->formatPlural().
     */
    public function testGetPluralFormat() {
        // Import some .po files with formulas to set up the environment.
        // These will also add the languages to the system.
        $this->importPoFile($this->getPoFileWithSimplePlural(), [
            'langcode' => 'fr',
        ]);
        $this->importPoFile($this->getPoFileWithComplexPlural(), [
            'langcode' => 'hr',
        ]);
        // Attempt to import some broken .po files as well to prove that these
        // will not overwrite the proper plural formula imported above.
        $this->importPoFile($this->getPoFileWithMissingPlural(), [
            'langcode' => 'fr',
            'overwrite_options[not_customized]' => TRUE,
        ]);
        $this->importPoFile($this->getPoFileWithBrokenPlural(), [
            'langcode' => 'hr',
            'overwrite_options[not_customized]' => TRUE,
        ]);
        // Reset static caches from locale_get_plural() to ensure we get fresh data.
        drupal_static_reset('locale_get_plural');
        drupal_static_reset('locale_get_plural:plurals');
        drupal_static_reset('locale');
        // Expected plural translation strings for each plural index.
        $plural_strings = [
            // English is not imported in this case, so we assume built-in text
            // and formulas.
'en' => [
                0 => '1 hour',
                1 => '@count hours',
            ],
            'fr' => [
                0 => '@count heure',
                1 => '@count heures',
            ],
            'hr' => [
                0 => '@count sat',
                1 => '@count sata',
                2 => '@count sati',
            ],
            // Hungarian is not imported, so it should assume the same text as
            // English, but it will always pick the plural form as per the built-in
            // logic, so only index -1 is relevant with the plural value.
'hu' => [
                0 => '1 hour',
                -1 => '@count hours',
            ],
        ];
        // Expected plural indexes precomputed base on the plural formulas with
        // given $count value.
        $plural_tests = [
            'en' => [
                1 => 0,
                0 => 1,
                5 => 1,
                123 => 1,
                235 => 1,
            ],
            'fr' => [
                1 => 0,
                0 => 0,
                5 => 1,
                123 => 1,
                235 => 1,
            ],
            'hr' => [
                1 => 0,
                21 => 0,
                0 => 2,
                2 => 1,
                8 => 2,
                123 => 1,
                235 => 2,
            ],
            'hu' => [
                1 => -1,
                21 => -1,
                0 => -1,
            ],
        ];
        foreach ($plural_tests as $langcode => $tests) {
            foreach ($tests as $count => $expected_plural_index) {
                // Assert that the we get the right plural index.
                $this->assertSame($expected_plural_index, locale_get_plural($count, $langcode), 'Computed plural index for ' . $langcode . ' for count ' . $count . ' is ' . $expected_plural_index);
                // Assert that the we get the right translation for that. Change the
                // expected index as per the logic for translation lookups.
                $expected_plural_index = $count == 1 ? 0 : $expected_plural_index;
                $expected_plural_string = str_replace('@count', $count, $plural_strings[$langcode][$expected_plural_index]);
                $this->assertSame($expected_plural_string, \Drupal::translation()->formatPlural($count, '1 hour', '@count hours', [], [
                    'langcode' => $langcode,
                ])
                    ->render(), 'Plural translation of 1 hours / @count hours for count ' . $count . ' in ' . $langcode . ' is ' . $expected_plural_string);
                // DO NOT use translation to pass translated strings into
                // PluralTranslatableMarkup::createFromTranslatedString() this way. It
                // is designed to be used with *already* translated text like settings
                // from configuration. We use PHP translation here just because we have
                // the expected result data in that format.
                $translated_string = \Drupal::translation()->translate('1 hour' . PoItem::DELIMITER . '@count hours', [], [
                    'langcode' => $langcode,
                ]);
                $plural = PluralTranslatableMarkup::createFromTranslatedString($count, $translated_string, [], [
                    'langcode' => $langcode,
                ]);
                $this->assertSame($expected_plural_string, $plural->render());
            }
        }
    }
    
    /**
     * Tests plural editing of DateFormatter strings.
     */
    public function testPluralEditDateFormatter() {
        // Import some .po files with formulas to set up the environment.
        // These will also add the languages to the system.
        $this->importPoFile($this->getPoFileWithSimplePlural(), [
            'langcode' => 'fr',
        ]);
        // Set French as the site default language.
        $this->config('system.site')
            ->set('default_langcode', 'fr')
            ->save();
        // Visit User Info page before updating translation strings. Change the
        // created time to ensure that the we're dealing in seconds and it can't be
        // exactly 1 minute.
        $this->adminUser
            ->set('created', time() - 1)
            ->save();
        $this->drupalGet('user');
        // Member for time should be translated.
        $this->assertSession()
            ->pageTextContains("seconde");
        $path = 'admin/config/regional/translate/';
        $search = [
            'langcode' => 'fr',
            // Limit to only translated strings to ensure that database ordering does
            // not break the test.
'translation' => 'translated',
        ];
        $this->drupalGet($path);
        $this->submitForm($search, 'Filter');
        // Plural values for the langcode fr.
        $this->assertSession()
            ->pageTextContains('@count seconde');
        $this->assertSession()
            ->pageTextContains('@count secondes');
        // Inject a plural source string to the database. We need to use a specific
        // langcode here because the language will be English by default and will
        // not save our source string for performance optimization if we do not ask
        // specifically for a language.
        \Drupal::translation()->formatPlural(1, '1 second', '@count seconds', [], [
            'langcode' => 'fr',
        ])
            ->render();
        $lid = Database::getConnection()->select('locales_source', 'ls')
            ->fields('ls', [
            'lid',
        ])
            ->condition('source', "1 second" . PoItem::DELIMITER . "@count seconds")
            ->condition('context', '')
            ->execute()
            ->fetchField();
        // Look up editing page for this plural string and check fields.
        $search = [
            'string' => '1 second',
            'langcode' => 'fr',
        ];
        $this->drupalGet('admin/config/regional/translate');
        $this->submitForm($search, 'Filter');
        // Save complete translations for the string in langcode fr.
        $edit = [
            "strings[{$lid}][translations][0]" => '1 seconde updated',
            "strings[{$lid}][translations][1]" => '@count secondes updated',
        ];
        $this->drupalGet($path);
        $this->submitForm($edit, 'Save translations');
        // User interface input for translating seconds should not be duplicated
        $this->assertSession()
            ->pageTextContainsOnce('@count seconds');
        // Member for time should be translated. Change the created time to ensure
        // that the we're dealing in multiple seconds and it can't be exactly 1
        // second or minute.
        $this->adminUser
            ->set('created', time() - 2)
            ->save();
        $this->drupalGet('user');
        $this->assertSession()
            ->pageTextContains("secondes updated");
    }
    
    /**
     * Tests plural editing and export functionality.
     */
    public function testPluralEditExport() {
        // Import some .po files with formulas to set up the environment.
        // These will also add the languages to the system.
        $this->importPoFile($this->getPoFileWithSimplePlural(), [
            'langcode' => 'fr',
        ]);
        $this->importPoFile($this->getPoFileWithComplexPlural(), [
            'langcode' => 'hr',
        ]);
        // Get the French translations.
        $this->drupalGet('admin/config/regional/translate/export');
        $this->submitForm([
            'langcode' => 'fr',
        ], 'Export');
        // Ensure we have a translation file.
        $this->assertSession()
            ->pageTextContains('# French translation of Drupal');
        // Ensure our imported translations exist in the file.
        $this->assertSession()
            ->responseContains("msgid \"Monday\"\nmsgstr \"lundi\"");
        // Check for plural export specifically.
        $this->assertSession()
            ->responseContains("msgid \"1 hour\"\nmsgid_plural \"@count hours\"\nmsgstr[0] \"@count heure\"\nmsgstr[1] \"@count heures\"");
        // Get the Croatian translations.
        $this->drupalGet('admin/config/regional/translate/export');
        $this->submitForm([
            'langcode' => 'hr',
        ], 'Export');
        // Ensure we have a translation file.
        $this->assertSession()
            ->pageTextContains('# Croatian translation of Drupal');
        // Ensure our imported translations exist in the file.
        $this->assertSession()
            ->responseContains("msgid \"Monday\"\nmsgstr \"Ponedjeljak\"");
        // Check for plural export specifically.
        $this->assertSession()
            ->responseContains("msgid \"1 hour\"\nmsgid_plural \"@count hours\"\nmsgstr[0] \"@count sat\"\nmsgstr[1] \"@count sata\"\nmsgstr[2] \"@count sati\"");
        // Check if the source appears on the translation page.
        $this->drupalGet('admin/config/regional/translate');
        $this->assertSession()
            ->pageTextContains("1 hour");
        $this->assertSession()
            ->pageTextContains("@count hours");
        // Look up editing page for this plural string and check fields.
        $path = 'admin/config/regional/translate/';
        $search = [
            'langcode' => 'hr',
        ];
        $this->drupalGet($path);
        $this->submitForm($search, 'Filter');
        // Labels for plural editing elements.
        $this->assertSession()
            ->pageTextContains('Singular form');
        $this->assertSession()
            ->pageTextContains('First plural form');
        $this->assertSession()
            ->pageTextContains('2. plural form');
        $this->assertSession()
            ->pageTextNotContains('3. plural form');
        // Plural values for langcode hr.
        $this->assertSession()
            ->pageTextContains('@count sat');
        $this->assertSession()
            ->pageTextContains('@count sata');
        $this->assertSession()
            ->pageTextContains('@count sati');
        $connection = Database::getConnection();
        // Edit langcode hr translations and see if that took effect.
        $lid = $connection->select('locales_source', 'ls')
            ->fields('ls', [
            'lid',
        ])
            ->condition('source', "1 hour" . PoItem::DELIMITER . "@count hours")
            ->condition('context', '')
            ->execute()
            ->fetchField();
        $edit = [
            "strings[{$lid}][translations][1]" => '@count sata edited',
        ];
        $this->drupalGet($path);
        $this->submitForm($edit, 'Save translations');
        $search = [
            'langcode' => 'fr',
        ];
        $this->drupalGet('admin/config/regional/translate');
        $this->submitForm($search, 'Filter');
        // Plural values for the langcode fr.
        $this->assertSession()
            ->pageTextContains('@count heure');
        $this->assertSession()
            ->pageTextContains('@count heures');
        $this->assertSession()
            ->pageTextNotContains('2. plural form');
        // Edit langcode fr translations and see if that took effect.
        $edit = [
            "strings[{$lid}][translations][0]" => '@count heure edited',
        ];
        $this->drupalGet($path);
        $this->submitForm($edit, 'Save translations');
        // Inject a plural source string to the database. We need to use a specific
        // langcode here because the language will be English by default and will
        // not save our source string for performance optimization if we do not ask
        // specifically for a language.
        \Drupal::translation()->formatPlural(1, '1 day', '@count days', [], [
            'langcode' => 'fr',
        ])
            ->render();
        $lid = $connection->select('locales_source', 'ls')
            ->fields('ls', [
            'lid',
        ])
            ->condition('source', "1 day" . PoItem::DELIMITER . "@count days")
            ->condition('context', '')
            ->execute()
            ->fetchField();
        // Look up editing page for this plural string and check fields.
        $search = [
            'string' => '1 day',
            'langcode' => 'fr',
        ];
        $this->drupalGet('admin/config/regional/translate');
        $this->submitForm($search, 'Filter');
        // Save complete translations for the string in langcode fr.
        $edit = [
            "strings[{$lid}][translations][0]" => '1 jour',
            "strings[{$lid}][translations][1]" => '@count jours',
        ];
        $this->drupalGet($path);
        $this->submitForm($edit, 'Save translations');
        // Save complete translations for the string in langcode hr.
        $search = [
            'string' => '1 day',
            'langcode' => 'hr',
        ];
        $this->drupalGet('admin/config/regional/translate');
        $this->submitForm($search, 'Filter');
        $edit = [
            "strings[{$lid}][translations][0]" => '@count dan',
            "strings[{$lid}][translations][1]" => '@count dana',
            "strings[{$lid}][translations][2]" => '@count dana',
        ];
        $this->drupalGet($path);
        $this->submitForm($edit, 'Save translations');
        // Get the French translations.
        $this->drupalGet('admin/config/regional/translate/export');
        $this->submitForm([
            'langcode' => 'fr',
        ], 'Export');
        // Check for plural export specifically.
        $this->assertSession()
            ->responseContains("msgid \"1 hour\"\nmsgid_plural \"@count hours\"\nmsgstr[0] \"@count heure edited\"\nmsgstr[1] \"@count heures\"");
        $this->assertSession()
            ->responseContains("msgid \"1 day\"\nmsgid_plural \"@count days\"\nmsgstr[0] \"1 jour\"\nmsgstr[1] \"@count jours\"");
        // Get the Croatian translations.
        $this->drupalGet('admin/config/regional/translate/export');
        $this->submitForm([
            'langcode' => 'hr',
        ], 'Export');
        // Check for plural export specifically.
        $this->assertSession()
            ->responseContains("msgid \"1 hour\"\nmsgid_plural \"@count hours\"\nmsgstr[0] \"@count sat\"\nmsgstr[1] \"@count sata edited\"\nmsgstr[2] \"@count sati\"");
        $this->assertSession()
            ->responseContains("msgid \"1 day\"\nmsgid_plural \"@count days\"\nmsgstr[0] \"@count dan\"\nmsgstr[1] \"@count dana\"\nmsgstr[2] \"@count dana\"");
    }
    
    /**
     * Imports a standalone .po file in a given language.
     *
     * @param string $contents
     *   Contents of the .po file to import.
     * @param array $options
     *   Additional options to pass to the translation import form.
     */
    public function importPoFile($contents, array $options = []) {
        $file_system = \Drupal::service('file_system');
        $name = $file_system->tempnam('temporary://', "po_") . '.po';
        file_put_contents($name, $contents);
        $options['files[file]'] = $name;
        $this->drupalGet('admin/config/regional/translate/import');
        $this->submitForm($options, 'Import');
        $file_system->unlink($name);
    }
    
    /**
     * Returns a .po file with a simple plural formula.
     */
    public function getPoFileWithSimplePlural() {
        return <<<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"

msgid "1 hour"
msgid_plural "@count hours"
msgstr[0] "@count heure"
msgstr[1] "@count heures"

msgid "1 second"
msgid_plural "@count seconds"
msgstr[0] "@count seconde"
msgstr[1] "@count secondes"

msgid "Monday"
msgstr "lundi"
EOF;
    }
    
    /**
     * Returns a .po file with a complex plural formula.
     */
    public function getPoFileWithComplexPlural() {
        return <<<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=3; plural=n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;\\n"

msgid "1 hour"
msgid_plural "@count hours"
msgstr[0] "@count sat"
msgstr[1] "@count sata"
msgstr[2] "@count sati"

msgid "Monday"
msgstr "Ponedjeljak"
EOF;
    }
    
    /**
     * Returns a .po file with a missing plural formula.
     */
    public function getPoFileWithMissingPlural() {
        return <<<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"

msgid "Monday"
msgstr "lundi"
EOF;
    }
    
    /**
     * Returns a .po file with a broken plural formula.
     */
    public function getPoFileWithBrokenPlural() {
        return <<<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: broken, will not parse\\n"

msgid "Monday"
msgstr "Ponedjeljak"
EOF;
    }

}