packages/watson-translator/languageId.js

// Licensed to the Apache Software Foundation (ASF) under one or more contributor
// license agreements; and to You under the Apache License, Version 2.0.

var watson = require('watson-developer-cloud/language-translator/v2');

/**
 * Identify the language of some text.
 *
 * @param payload The text to identify.
 * @param username The watson service username.
 * @param password The watson service password.
 * @return An object with the following properties: {
 *           payload: the original text,
 *           language: the identified language,
 *           confidence: the confidence score
 *         }
 */
function main({payload: payload,
    username: username,
    password: password,
    url: url = 'https://gateway.watsonplatform.net/language-translator/api'
        }) {
    console.log('payload is', payload);
    var language_translation = new watson({
        username: username,
        password: password,
        url: url
    });
    var promise = new Promise(function(resolve, reject) {
        language_translation.identify({text: payload}, function (err, response) {
            if (err) {
                console.log('error:', err);
                reject(err);
            } else {
                var language = response.languages[0].language;
                var confidence = response.languages[0].confidence;
                console.log('language:', language, ', payload:', payload);
                resolve({language: language, payload: payload, confidence: confidence});
            }
        });
    });

    return promise;
}