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File name : TranslationCommand.php

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<?php

/*
 * This file is part of the Kimai time-tracking app.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace App\Command;

use App\Kernel;
use App\Utils\LanguageService;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Helper\ProgressBar;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\HttpClient\HttpClient;

/**
 * Command used to execute all the basic application bootstrapping AFTER "composer install" was executed.
 *
 * @codeCoverageIgnore
 */
class TranslationCommand extends Command
{
    private $projectDirectory;
    private $environment;
    private $languageService;

public function __construct(string $projectDirectory, string $kernelEnvironment, LanguageService $languageService)
    {
        parent::__construct();
        $this->projectDirectory = $projectDirectory;
        $this->environment = $kernelEnvironment;
        $this->languageService = $languageService;
    }

/**
     * {@inheritdoc}
     */
    protected function configure()
    {
        $this
            ->setName('kimai:translations')
            ->setDescription('Translation adjustments')
            ->addOption('resname', null, InputOption::VALUE_NONE, 'Fix the resname vs. id attribute')
            ->addOption('duplicates', null, InputOption::VALUE_NONE, 'Find duplicate translation keys')
            ->addOption('delete-resname', null, InputOption::VALUE_REQUIRED, 'Deletes the translation by resname')
            ->addOption('extension', null, InputOption::VALUE_NONE, 'Find translation files with wrong extensions')
            ->addOption('fill-empty', null, InputOption::VALUE_NONE, 'Pre-fills empty translations with the english version')
            // DEEPL TRANSLATION FEATURE - UNTESTED
            ->addOption('translate-locale', null, InputOption::VALUE_REQUIRED, 'Translate into the given locale with Deepl')
            // @see https://www.deepl.com/de/pro#developer
            ->addOption('translate-deepl', null, InputOption::VALUE_REQUIRED, 'Translate using the "DeepL API Free" auth-key')
        ;
    }

public function isEnabled(): bool
    {
        return $this->environment !== 'prod';
    }

protected function execute(InputInterface $input, OutputInterface $output): ?int
    {
        $io = new SymfonyStyle($input, $output);

$bases = [
            'core' => $this->projectDirectory . '/translations/*.xlf',
            'core_xliff' => $this->projectDirectory . '/translations/*.xliff',
            'plugins' => $this->projectDirectory . Kernel::PLUGIN_DIRECTORY . '/*/Resources/translations/*.xlf',
            'plugins_xliff' => $this->projectDirectory . Kernel::PLUGIN_DIRECTORY . '/*/Resources/translations/*.xliff',
        ];

if ($input->getOption('delete-resname')) {
            $files = glob($bases['core']);
            foreach ($files as $file) {
                $this->removeKey($file, $input->getOption('delete-resname'));
            }
        }

// ==========================================================================
        // Fix resname vs. id
        // ==========================================================================
        if ($input->getOption('resname')) {
            foreach ($bases as $directory) {
                $files = glob($directory);

foreach ($files as $file) {
                    $this->fixXlfFile($file);
                }
            }
        }

// ==========================================================================
        // Fill empty translations with english version
        // ==========================================================================
        if ($input->getOption('fill-empty')) {
            $translateFrom = ['de-CH' => 'de', 'de_CH' => 'de', 'pt_BR' => 'pt', 'pt-BR' => 'pt', 'pt' => 'pt_BR'];
            $translations = [];
            foreach ($bases as $directory) {
                $files = glob($directory);

foreach ($files as $file) {
                    $base = basename($file);
                    $parts = explode('.', $base);
                    $name = $parts[0];
                    $fileLocale = $parts[1];
                    $fromLocale = 'en';
                    if (\array_key_exists($fileLocale, $translateFrom)) {
                        $fromLocale = $translateFrom[$fileLocale];
                    }

if (!\array_key_exists($fromLocale, $translations)) {
                        $translations[$fromLocale] = [];
                    }

if (!\array_key_exists($name, $translations[$fromLocale])) {
                        $fromLocaleName = str_replace('.' . $fileLocale . '.', '.' . $fromLocale . '.', $file);
                        if (!file_exists($fromLocaleName)) {
                            $io->error('Could not find translation file: ' . $fromLocaleName);

return 1;
                        }
                        $translations[$fromLocale][$name] = $this->getTranslations($fromLocaleName);
                    }

if (stripos($base, '.' . $fromLocale . '.xlf') !== false || stripos($base, '.' . $fromLocale . '.xliff') !== false) {
                        continue;
                    }

$this->fixEmptyTranslations($file, $translations[$fromLocale][$name]);
                }
            }
        }

// ==========================================================================
        // Find wrong file extensions
        // ==========================================================================
        if ($input->getOption('extension')) {
            foreach ([$bases['core'], $bases['plugins']] as $directory) {
                $files = glob($directory);

foreach ($files as $file) {
                    $file = str_replace($this->projectDirectory, '', $file);
                    $io->warning($file);
                }
            }
        }

// ==========================================================================
        // Find duplicate translation keys
        // ==========================================================================
        if ($input->getOption('duplicates')) {
            $duplicates = [];

foreach ($bases as $directory) {
                foreach (glob($directory) as $file) {
                    $xml = simplexml_load_file($file);
                    foreach ($xml->file->body->{'trans-unit'} as $unit) {
                        $n = (string) $unit['resname'];
                        if (!\array_key_exists($n, $duplicates)) {
                            $duplicates[$n] = [];
                        }
                        $b = explode('.', basename($file))[0];
                        if (!\in_array($b, $duplicates[$n])) {
                            $duplicates[$n][] = $b;
                        }
                    }
                }
            }

foreach ($duplicates as $id => $files) {
                if (\count($files) > 1) {
                    $io->text($id . ' => ' . implode(', ', $files));
                }
            }
        }

// ==========================================================================
        // DEEPL
        // ==========================================================================
        $locale = $input->getOption('translate-locale');
        $deepl = $input->getOption('translate-deepl');

if ($locale !== null && $deepl === null) {
            $io->error('Missing "DeepL API Free" auth-key');

return 1;
        }

if ($locale === null && $deepl !== null) {
            $io->error('Missing translation locale');

return 1;
        }

if ($locale !== null && $deepl !== null) {
            // see https://github.com/octfx/DeepLy/blob/master/src/DeepLy.php
            $deeplySupportedLanguages = [
                'de' => 'DE',
                'en' => 'EN-US',
                'fr' => 'FR',
                'it' => 'IT',
                'ja' => 'JA',
                'es' => 'ES',
                'nl' => 'NL',
                'pl' => 'PL',
                'pt' => 'PT-PT', // ???
                'pt_BR' => 'PT-BR', // ???
                'ru' => 'RU',
                'zh_CN' => 'ZH',
            ];

$locale = strtolower($locale);
            if (!$this->languageService->isKnownLanguage($locale)) {
                $io->error('Unknown locale given: ' . $locale);

return 1;
            }

if (!\array_key_exists($locale, $deeplySupportedLanguages)) {
                $io->error('Locale not supported by Deeply: ' . $locale);

return 1;
            }

$allKeys = 0;
            $enFiles = glob($bases['core'] . '/*.en.xlf');

$baseUrl = 'https://api-free.deepl.com/v2/translate';
            $client = HttpClient::create([]);

foreach ($enFiles as $file) {
                $enTrans = [];
                $domain = explode('.', basename($file))[0];

$xml = simplexml_load_file($file);

foreach ($xml->file->body->{'trans-unit'} as $unit) {
                    $id = (string) $unit['id'];
                    $enTrans[$id] = [
                        'resname' => (string) $unit['resname'],
                        'source' => (string) $unit->source,
                        'target' => (string) $unit->target
                    ];
                    $allKeys++;
                }

$localeFile = $bases['core'] . '/' . $domain . '.' . $locale . '.xlf';

$translated = [];

if (file_exists($localeFile)) {
                    $xml2 = simplexml_load_file($localeFile);
                    foreach ($xml2->file->body->{'trans-unit'} as $unit) {
                        $id = (string) $unit['id'];
                        $translated[$id] = [
                            'resname' => (string) $unit['resname'],
                            'source' => (string) $unit->source,
                            'target' => (string) $unit->target
                        ];
                    }
                }

$missingIds = array_diff(array_keys($enTrans), array_keys($translated));
                if (\count($missingIds) === 0) {
                    continue;
                }

$io->title('Translating ' . $domain);
                $progress = new ProgressBar($output, \count($missingIds));

foreach ($missingIds as $id) {
                    $progress->advance();

$values = $enTrans[$id];
                    $translated[$id] = $values;

$params = [
                        'auth_key' => $deepl,
                        //'split_sentences' => '1',
                        //'preserve_formatting' => '0',
                        'formality' => 'default',
                        'text' => $values['target'],
                        'source_lang' => 'en',
                        'target_lang' => $deeplySupportedLanguages[$locale],
                    ];

$rawResponseData = null;
                    try {
                        $rawResponseData = $client->request('POST', $baseUrl, ['body' => $params]);
                    } catch (\Exception $exception) {
                        $io->error($exception->getMessage());

return 1;
                    }

$json = json_decode($rawResponseData->getContent(), true);
                    $translation = $json['translations'][0]['text'];

$translated[$id]['target'] = $translation;
                }

$progress->finish();
                $io->writeln(PHP_EOL);

$this->writeXliffFile($bases['core'], $domain, $locale, $translated);
            }
        }

return 0;
    }

private function getTranslations(string $file): array
    {
        $translations = [];

$xml = simplexml_load_file($file);
        foreach ($xml->file->body->{'trans-unit'} as $unit) {
            if (!isset($unit['resname'])) {
                throw new \Exception('Missing "resname" attribute in file: ' . $file);
            }

$source = (string) $unit['resname'];
            $translations[$source] = (string) $unit->target;
        }

return $translations;
    }

private function writeXliffFile(string $base, string $domain, string $locale, array $translations = []): void
    {
        $from = $base . '/' . $domain . '.en.xlf';
        $to = $base . '/' . $domain . '.' . $locale . '.xlf';

copy($from, $to);

$xml = simplexml_load_file($to);

/** @var \SimpleXMLElement $fileNode */
        $fileNode = $xml->file;
        $fileNode->attributes()->{'target-language'} = $locale;
        $fileNode->attributes()->{'original'} = $domain . '.en.xlf';

unset($xml->file->body);

$xmlDocument = new \DOMDocument('1.0', 'UTF-8');
        $xmlDocument->preserveWhiteSpace = false;
        $xmlDocument->formatOutput = true;
        $xmlDocument->loadXML($xml->asXML());

$xpath = new \DOMXpath($xmlDocument);
        $xpath->registerNamespace('ns', $xmlDocument->documentElement->namespaceURI);

$xmlContent = '';
        foreach ($translations as $id => $values) {
            $xmlContent .= sprintf(
                '<trans-unit id="%s" resname="%s"><source>%s</source><target>%s</target></trans-unit>',
                $id,
                $values['resname'],
                $values['source'],
                $values['target']
            );
        }

$fragment = $xmlDocument->createDocumentFragment();
        $fragment->appendXml('<body>' . $xmlContent . '</body>');

/** @var \DOMElement $element */
        $element = $xpath->evaluate('/ns:xliff/ns:file')->item(0);
        $element->appendChild($fragment);

file_put_contents($to, $xmlDocument->saveXML());
    }

private function fixXlfFile(string $file): void
    {
        $xml = simplexml_load_file($file);
        if (isset($xml->file->header)) {
            unset($xml->file->header);
        }

foreach ($xml->file->body->{'trans-unit'} as $unit) {
            $source = $unit->source;
            if (!isset($unit['resname'])) {
                $unit['resname'] = $source;
            }
            $unit['id'] = $this->generateId($source);
        }

$xmlDocument = new \DOMDocument('1.0');
        $xmlDocument->preserveWhiteSpace = false;
        $xmlDocument->formatOutput = true;
        $xmlDocument->loadXML($xml->asXML());

file_put_contents($file, $xmlDocument->saveXML());
    }

private function fixEmptyTranslations(string $file, array $translations): void
    {
        $xml = simplexml_load_file($file);
        $foundEmpty = false;

foreach ($xml->file->body->{'trans-unit'} as $unit) {
            if (!isset($unit['resname'])) {
                continue;
            }

$key = (string) $unit['resname'];

$translation = (string) $unit->target;
            if (\strlen($translation) > 0) {
                continue;
            }

if (!\array_key_exists($key, $translations)) {
                throw new \Exception(
                    sprintf('Missing english translation for key: %s in file %s', $key, $file)
                );
            }
            $unit->target[0] = $translations[$key];
            $unit->target['state'] = 'needs-translation';
            $foundEmpty = true;
        }

if (!$foundEmpty) {
            return;
        }

$xmlDocument = new \DOMDocument('1.0');
        $xmlDocument->preserveWhiteSpace = false;
        $xmlDocument->formatOutput = true;
        $xmlDocument->loadXML($xml->asXML());

file_put_contents($file, $xmlDocument->saveXML());
    }

private function removeKey(string $file, string $key): void
    {
        $xml = simplexml_load_file($file);

/** @var \SimpleXMLElement $unit */
        foreach ($xml->file->body->{'trans-unit'} as $unit) {
            if (!isset($unit['resname'])) {
                continue;
            }

if ((string) $unit['resname'] === $key) {
                $dom = dom_import_simplexml($unit);
                $dom->parentNode->removeChild($dom);
                break;
            }
        }

$xmlDocument = new \DOMDocument('1.0');
        $xmlDocument->preserveWhiteSpace = false;
        $xmlDocument->formatOutput = true;
        $xmlDocument->loadXML($xml->asXML());

file_put_contents($file, $xmlDocument->saveXML());
    }

private function generateId(string $source): string
    {
        return strtr(substr(base64_encode(hash('sha256', $source, true)), 0, 7), '/+', '._');
    }
}

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