app.js

/**
 * Copyright 2015 IBM Corp. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

'use strict';

var express    = require('express'),
  app          = express(),
  watson       = require('watson-developer-cloud');

// Bootstrap application settings
require('./config/express')(app);

// Create the service wrapper
var toneAnalyzer = watson.tone_analyzer({
  url: 'https://gateway.watsonplatform.net/tone-analyzer-beta/api/',
  username: '<username>',
  password: '<password>',
  version_date: '2016-11-02',
  version: 'v3-beta'
});

app.get('/', function(req, res) {
  res.render('index');
});

app.post('/api/tone', function(req, res, next) {
  toneAnalyzer.tone(req.body, function(err, data) {
    if (err)
      return next(err);
    else
      return res.json(data);
  });
});

// error-handler application settings
require('./config/error-handler')(app);

var port = process.env.VCAP_APP_PORT || 3000;
app.listen(port);
console.log('listening at:', port);