app.js

/*
 app.js
 the entry point for the do.bot node app.
*/

require('dotenv').config();

process.env.TZ = 'America/New_York';

const express = require('express'),
 bodyParser = require('body-parser'),
 request_module = require('request'),
 utils = require('./utils'),
 glob = require('glob'),
 path = require('path'),
 slack = require('./models/slack').slack_client;

const app = express(),
 port = process.env.port || 9911;


app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
 extended: true
}));


/**
 * add some common utilities to the request object
 */
app.use(function(request, response, next){
 request.slack = slack;
 request.external = request_module;
 request.messageChannel = utils.messageChannel;
 request.messageUser = utils.messageUser;
 request.nextColor = utils.nextColor;
 //add this field to the response header so we can handle requests from the site
 response.set({
 'Access-Control-Allow-Origin': '*',
 'Access-Control-Allow-Methods': ['POST', 'GET'],
 'Access-Control-Allow-Headers': '*'
 });
 next();
});


/**
 * verify every reqeust aginst the token sent from the slack server
 */
app.use(function(request, response, next){
 let token = process.env.SLACK_VERIFICATION_TOKEN,
 request_token = request.body.token;

 if('payload' in request.body){
 let payload = JSON.parse(request.body.payload);
 request_token = payload.token;
 }

 if(!token || token != request_token){
 console.error(`Verification tokens do not match`);
 return response.send(400);
 }

 next();
});

// load all of the apps
glob.sync('./apps/*/app.js').forEach(function(file){
 console.info(`Loading app: ${file}`);
 require(path.resolve(file));
});

app.get('/', function(req, res){
 res.send('do.bot');
});

app.listen(port, function(){
 console.log('do.bot is running on port ' + port);
});

require('./routes')(app);