PubNub Sentiment Analysis with IBM Watson BLOCK

pubnub_wason_sentiment.js

const xhr = require('xhr');
const qs = require('codec/query_string');

export default (request) => {
    const apiUrl = 'https://gateway-a.watsonplatform.net/calls/text/TextGetTextSentiment';
    const apiKey = '0000000000000000000000000000000000000000';

    const querystring = qs.stringify({
        outputMode: 'json',
        showSourceText: false,
        text: request.message.text,
        apikey: apiKey
    });

    return xhr.fetch(apiUrl + '?' + querystring)
        .then(function (r) {
            const body = JSON.parse(r.body);
            request.message.sentiment_score = body.docSentiment.score;
            request.message.sentiment_type  = body.docSentiment.type;

            return request.ok();
        })
        .catch(function (e){
            console.error(e);
            return request.ok();
        });
}