# i18n-translate-agent

🚀 An intelligent i18n translation agent powered by OpenAI, supporting automatic translation of JSON files with caching and progress tracking.

## ✨ Features

- **Multi-language Support**: Translate from one source language to multiple target languages
- **AI-Powered**: Uses OpenAI's GPT models (default: gpt-4o) for high-quality translations
- **Smart Caching**: Intelligent caching system to avoid re-translating unchanged content
- **Progress Tracking**: Real-time progress bars for translation tasks
- **Fine-tuning Support**: Customize translation context for domain-specific accuracy
- **JSON File Processing**: Automatically processes JSON internationalization files
- **Error Handling**: Comprehensive error logging and recovery
- **Batch Processing**: Efficient batch translation with configurable concurrency

## 📦 Installation

```bash
# Using npm
npm install i18n-translate-agent

# Using yarn
yarn add i18n-translate-agent

# Using pnpm
pnpm add i18n-translate-agent
```

## 🚀 Quick Start

```javascript
import { CwalletTranslate } from "i18n-translate-agent";
import path from "path";

// Get current directory
const __dirname = import.meta.dirname;

// Create translation instance
const translator = new CwalletTranslate({
  key: "your-openai-api-key",
  sourceLanguage: "en",

  // Cache file path for optimized re-runs
  cacheFileRootPath: path.resolve(__dirname, "./cache"),

  // Source translation files path
  fileRootPath: path.resolve(__dirname, "./locales"),

  // Fine-tune translation context for better accuracy
  fineTune: [
    "We are blockchain developers",
    "This is a cryptocurrency wallet application",
    "Technical terms should be kept consistent",
  ],

  // Target languages to translate to
  languages: [
    "zh-CN", // Simplified Chinese
    "zh-TW", // Traditional Chinese
    "ja", // Japanese
    "ko", // Korean
    "fr", // French
    "de", // German
    "es", // Spanish
    "pt", // Portuguese
    "ru", // Russian
    "ar", // Arabic
  ],

  // Output directory for translated files
  outputRootPath: path.resolve(__dirname, "./locales"),

  // Optional: Custom OpenAI configuration
  openaiClientConfig: {
    apiKey: "your-openai-api-key",
    baseURL: "https://api.openai.com/v1", // Optional: custom endpoint
  },

  // Optional: Custom chat completion parameters
  chatCompletionCreateParams: {
    model: "gpt-4o",
    temperature: 0.3,
    max_tokens: 1000,
  },
});

// Start translation
await translator.translate();
```

## 📁 File Structure

Your project should have the following structure:

```
your-project/
├── locales/
│   └── en/                 # Source language folder
│       ├── common.json
│       ├── auth.json
│       └── dashboard.json
├── cache/                  # Generated cache files
│   ├── zh-CN/
│   ├── ja/
│   └── ...
└── translate.js           # Your translation script
```

### Example JSON Files

**locales/en/common.json**

```json
{
  "welcome": "Welcome",
  "loading": "Loading...",
  "error": "An error occurred",
  "save": "Save",
  "cancel": "Cancel"
}
```

After translation, you'll get:

**locales/zh-CN/common.json**

```json
{
  "welcome": "欢迎",
  "loading": "加载中...",
  "error": "发生错误",
  "save": "保存",
  "cancel": "取消"
}
```

## ⚙️ Configuration Options

| Option                       | Type                         | Required | Description                                     |
| ---------------------------- | ---------------------------- | -------- | ----------------------------------------------- |
| `key`                        | `string`                     | ✅       | OpenAI API key                                  |
| `sourceLanguage`             | `string`                     | ❌       | Source language code (default: 'en')            |
| `languages`                  | `string[]`                   | ✅       | Target language codes to translate to           |
| `fileRootPath`               | `string`                     | ✅       | Path to source translation files                |
| `cacheFileRootPath`          | `string`                     | ✅       | Path for cache files                            |
| `outputRootPath`             | `string`                     | ❌       | Output path (default: same as fileRootPath)     |
| `fineTune`                   | `string[]`                   | ❌       | Context strings for better translation accuracy |
| `openaiClientConfig`         | `ClientOptions`              | ❌       | Custom OpenAI client configuration              |
| `chatCompletionCreateParams` | `ChatCompletionCreateParams` | ❌       | Custom chat completion parameters               |

## 🌍 Supported Languages

The agent supports all major languages. Use standard language codes:

- `en` - English
- `zh-CN` - Simplified Chinese
- `zh-TW` - Traditional Chinese
- `ja` - Japanese
- `ko` - Korean
- `fr` - French
- `de` - German
- `es` - Spanish
- `pt` - Portuguese
- `ru` - Russian
- `ar` - Arabic
- `hi` - Hindi
- `th` - Thai
- `vi` - Vietnamese
- And many more...

## 🛠️ Advanced Usage

### Custom Fine-tuning

```javascript
const translator = new CwalletTranslate({
  // ... other options
  fineTune: [
    "This is a financial application",
    "Cryptocurrency and blockchain terminology should be preserved",
    "Keep technical terms in English when appropriate",
    "Maintain formal tone throughout",
  ],
});
```

### Error Handling

```javascript
try {
  await translator.translate();
  console.log("Translation completed successfully!");
} catch (error) {
  console.error("Translation failed:", error);
}
```

### Cache Management

```javascript
import { generateCache, deleteBatchCache } from "i18n-translate-agent";

// Generate cache for specific languages
await generateCache(["zh-CN", "ja"], "/path/to/cache");

// Clear cache for specific languages
await deleteBatchCache(["zh-CN", "ja"], "/path/to/cache");
```

## 📊 Progress Tracking

The agent provides real-time progress tracking:

```
🚀 Starting translation
🚀 Model being used: gpt-4o 🚀
🚀 Fine-tuning: ['Technical context...'] 🚀
🚀 ~ Files to be translated: ['common.json', 'auth.json']

████████████████████████████████████████ 100% | zh-CN:common.json 25/25
████████████████████████████████████████ 100% | zh-CN:auth.json 30/30
████████████████████████████████████████ 100% | ja:common.json 25/25
████████████████████████████████████████ 100% | ja:auth.json 30/30

🚀 Translation completed
```

## 🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

## 📄 License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

## 🙋‍♂️ Support

If you have any questions or need help, please [open an issue](https://github.com/victorLee11/i18n-translate-agent/issues).

## 🔗 Links

- [GitHub Repository](https://github.com/victorLee11/i18n-translate-agent)
- [NPM Package](https://www.npmjs.com/package/i18n-translate-agent)
- [OpenAI API Documentation](https://platform.openai.com/docs)