Simple Unity Google Translator

GoogleTranslator.cs

/* Credit */
// Inspired by grimmdev's code - https://gist.github.com/grimmdev/979877fcdc943267e44c

/* Dependency */
// Import SimpleJSON Scripts : http://wiki.unity3d.com/index.php/SimpleJSON
// You can use your own JSON Parser if you want.

/* Limitations */
// translate.googleapis.com is free, but it only allows about 100 requests per one hour.
// After that, you will receive 429 error response.
// You may consider using paid service like google translate v2(https://translation.googleapis.com/language/translate/v2) to remove the limitations.
// Check here if you want to use paid version : https://gist.github.com/IJEMIN/fdff6db1b1131b91033cbf204247816e

using System;
using System.Collections;
using SimpleJSON;
using UnityEngine;
using UnityEngine.Networking;

public class GoogleTranslator : MonoBehaviour
{
    private void Awake()
    {
        DoExample();
    }
    
    // Remove this method after understanding how to use.
    private void DoExample()
    {
        TranslateText("en","ko","I'm a real gangster.", (success, translatedText) =>
        {
            if (success)
            {
                Debug.Log(translatedText);
            }
        });
        
        TranslateText("ko","en","나는 리얼 갱스터다.", (success, translatedText) =>
        {
            if (success)
            {
                Debug.Log(translatedText);
            }
        });
    }

    public void TranslateText(string sourceLanguage, string targetLanguage, string sourceText, Action<bool, string> callback)
    {
        StartCoroutine(TranslateTextRoutine(sourceLanguage, targetLanguage, sourceText, callback));
    }

    private static IEnumerator TranslateTextRoutine(string sourceLanguage, string targetLanguage, string sourceText, Action<bool, string> callback)
    {
        var url = $"https://translate.googleapis.com/translate_a/single?client=gtx&sl={sourceLanguage}&tl={targetLanguage}&dt=t&q={UnityWebRequest.EscapeURL(sourceText)}";

        var webRequest = UnityWebRequest.Get(url);

        yield return webRequest.SendWebRequest();

        if (webRequest.isHttpError || webRequest.isNetworkError)
        {
            Debug.LogError(webRequest.error);
            callback.Invoke(false, string.Empty);

            yield break;
        }

        var parsedTexts = JSONNode.Parse(webRequest.downloadHandler.text);
        var translatedText = parsedTexts[0][0][0];

        callback.Invoke(true, translatedText);
    }
}

Thanks for sharing. I often use translators in my work. Google Translator is one of them. But I like https://www.translate.com/english-nepali better because it is always an accurate translation. They are ready to help with more than 90 languages and it's really true.