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Laravel Auto Translation

Introduction

Laravel Auto Translation is a robust package designed to simplify and streamline the localization of your Laravel application. By automating the translation of your language files, this package ensures a more efficient workflow. Key features include:

1. Multiple Drivers: ChatGPT, Google Translate, and DeepL.
2. JSON & PHP Language File Support: Scans both JSON and nested PHP files.
3. Placeholder Preservation: Automatically protects placeholders like :attribute or :seconds from being altered.

Requirements

• PHP >= 8.0
• Laravel 9.x, 10.x, or 11.x

Installation

Install the package using Composer:

composer require vildanbina/laravel-auto-translation

Publish the configuration file:

php artisan vendor:publish --provider="VildanBina\LaravelAutoTranslation\AutoTranslationsServiceProvider"

Configuration

The configuration file is located at config/auto-translations.php. Below is an example of its default settings. Customize these settings to suit your application, such as specifying the default driver or changing the source language:

<?php

return [
    'lang_path' => lang_path(),

    'default_driver' => env('TRANSLATION_DEFAULT_DRIVER', 'chatgpt'),

    'source_language' => env('TRANSLATION_SOURCE_LANGUAGE', 'en'),

    'drivers' => [
        'chatgpt' => [
            'api_key'     => env('CHATGPT_API_KEY'),
            'model'       => env('CHATGPT_MODEL', 'gpt-3.5-turbo'),
            'temperature' => env('CHATGPT_TEMPERATURE', 0.7),
            'max_tokens'  => env('CHATGPT_MAX_TOKENS', 1000),
            'http_timeout' => env('CHATGPT_HTTP_TIMEOUT', 30),
        ],
        'google' => [
            'api_key' => env('GOOGLE_API_KEY'),
        ],
        'deepl' => [
            'api_key' => env('DEEPL_API_KEY'),
            'api_url' => env('DEEPL_API_URL', 'https://api-free.deepl.com/v2/translate'),
        ],

        // Example of a custom driver registration:
        // 'my_custom_driver' => [
        //     'class'   => \App\Drivers\MyCustomDriver::class,
        //     'api_key' => env('MY_CUSTOM_API_KEY'),
        // ],
    ],
];

Setting Up Environment Variables

Add the required API keys to your .env file. Obtain these keys from the respective service providers:

• ChatGPT: Visit OpenAI API documentation to generate an API key.
• Google Translate: Obtain an API key from the Google Cloud Console.
• DeepL: Generate your API key from the DeepL Pro Account.

TRANSLATION_DEFAULT_DRIVER=chatgpt
TRANSLATION_SOURCE_LANGUAGE=en
CHATGPT_API_KEY=your-chatgpt-api-key
GOOGLE_API_KEY=your-google-api-key
DEEPL_API_KEY=your-deepl-api-key

Commands

1. translate:scan

This command scans all PHP files located within the lang/ folder (including nested directories), extracting translatable strings and saving them in a JSON file (lang/texts_to_translate.json). This file serves as the base for subsequent translations.

Usage:

php artisan translate:scan --lang=en

2. translate:default

This command translates the strings defined in texts_to_translate.json into a specified target language using the chosen translation driver. It also preserves Laravel placeholders from being translated.

Usage:

php artisan translate:default fr --driver=deepl --overwrite

• target_lang (Argument) – The target language code (e.g., fr).
• --source_lang (Optional) – Source language code; defaults to config value.
• --driver (Optional) – Translation driver; defaults to config value.
• --overwrite (Optional) – Whether to overwrite existing translations.

3. Using In-Memory Texts (If Applicable)

In addition to scanning and translating language files, you can programmatically set texts directly in memory. This is useful for scenarios where you want to translate specific texts without relying on language files.

Example:

use VildanBina\LaravelAutoTranslation\TranslationWorkflowService;
use VildanBina\LaravelAutoTranslation\Services\TranslationEngineService;

// Assume $translationEngineService is an instance of TranslationEngineService
$translationWorkflowService = new TranslationWorkflowService($translationEngineService);

// Define texts to translate
$texts = [
    'welcome.message' => 'Welcome to our application!',
    'user.greeting' => 'Hello, :name!',
];

// Set texts in memory
$translationWorkflowService->setInMemoryTexts($texts);

// Perform translation
$translatedTexts = $translationWorkflowService->translate('en', 'fr', 'deepl');

// Output translated texts
print_r($translatedTexts);

Custom Drivers

To add a custom driver, follow these steps:

1. Implement the TranslationDriver interface:

   use VildanBina\LaravelAutoTranslation\Contracts\TranslationDriver;
   
   class MyCustomDriver implements TranslationDriver
   {
      public function __construct(private array $config)
      {
      }
   
      public function translate(array $texts, string $sourceLang, string $targetLang): array
      {
          // Your custom logic...
          return $texts;
      }
   }

2. Register the driver in auto-translations.php:

   'drivers' => [
      'my_custom_driver' => [
          'class'   => \App\Drivers\MyCustomDriver::class,
          'api_key' => env('MY_CUSTOM_API_KEY'),
          // additional config...
      ],
   ],

3. Use it in translations:

   php artisan translate:default fr --driver=my_custom_driver

Supported Drivers

• ChatGPT: Flexible and context-aware translations.
• Google Translate: Fast and reliable.
• DeepL: Known for accurate translations, especially for European languages.
• Custom Driver: Extendable for your own APIs or offline services.

Contributing

See CONTRIBUTING for details.

Security Vulnerabilities

Please e-mail [email protected] to report any security vulnerabilities instead of using the issue tracker.

Credits

• Vildan Bina
• All Contributors

License

The MIT License (MIT). Please see License File for more information.