server-api.js

//*** Local API Section ***/
var cors = cors || require('cors'),
    config = config || require('./config/config'),
    bodyParser = bodyParser || require('body-parser');

var ConversationV1 = require('watson-developer-cloud/conversation/v1');
var conversation = new ConversationV1({
    username: config.api_credentials.username,
    password: config.api_credentials.password,
    version_date: ConversationV1.VERSION_DATE_2016_09_20
});

module.exports = function (app) {
    app.use(cors());
    app.use(function (req, res, next) {
        res.setHeader('Access-Control-Allow-Origin', 'http://localhost:500');
        res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
        res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');
        res.setHeader('Access-Control-Allow-Credentials', true);
        next();
    });
    app.use(bodyParser.urlencoded({ extended: true }));
    app.use(bodyParser.json());

    app.post('/api/send', function (req, res) {
        conversation.message({
            input: { text: req.body.text },
            workspace_id: config.api_credentials.workspace_id,
            context: req.body.context || {}
        }, function (err, response) {
            if (err) {
                console.log('ERROR@api/send: ' + err);
                return res.send(err);
            } else {
                return res.send(JSON.stringify(response, null, 2));
            }
        });
    });
    console.log('API is up and running...');
}