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app.js
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app.js
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/**
* 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.
*/
/* eslint-env es6 */
require('dotenv').config({ silent: true });
const express = require('express');
const app = express();
// Bootstrap application settings
require('./config/express')(app);
// Instantiate Tone Analyzer service
const ToneAnalyzerV3 = require('ibm-watson/tone-analyzer/v3');
const { IamAuthenticator } = require('ibm-watson/auth');
const toneAnalyzer = new ToneAnalyzerV3({
version: '2019-10-10',
authenticator: new IamAuthenticator({
apikey: process.env.TONE_ANALYZER_IAM_APIKEY || 'type-key-here',
}),
url: process.env.TONE_ANALYZER_URL,
});
// Endpoint for web app
app.get('/', (req, res) => {
res.render('index');
});
// Endpoint for Tone Analyzer tone_chat endpoint
app.post('/api/tone_chat', async (req, res, next) => {
const params = {
utterances: req.body.utterances,
contentLanguage: req.body.content_language,
};
try {
const tone = await toneAnalyzer.toneChat(params);
return res.json(tone.result);
} catch (e) {
return next(e);
}
});
// Endpoint for healthcheck for Tone Analyzer's tone_chat endpoint
app.get('/healthcheck', async (req, res) => {
const start = new Date();
const payload = { utterances: [{ text: 'sad', user: 'customer' }] };
try {
await toneAnalyzer.toneChat(payload);
return res.json({
status: 'normal',
response_time: new Date() - start,
});
} catch (error) {
return res.status(502).json({ status: 'down', error, response_time: new Date() - start });
}
});
// User feedback module
require('./user-feedback')(app);
// error-handler settings
require('./config/error-handler')(app);
module.exports = app;