server.js

//
// Copyright (c) 2017 Cisco Systems
// Licensed under the MIT License 
//


// eslint-disable-next-line no-unused-vars
const debug = require("debug")("emulator");
const express = require("express");
const uuid = require('uuid/v4');

//
// Setting up common services 
//
const app = express();

// Inject EventBus
const EventEmitter = require('events').EventEmitter;
const bus = new EventEmitter();

// Inject Datastore
const datastore = require("./storage/memory");
// [TODO] replace with new MemoryDatastore(bus)
datastore.bus = bus;
app.locals.datastore = datastore;

// Inject Controller
const Controller = require("./controller");
// This is set to create routes but never "used"
// eslint-disable-next-line no-unused-vars
const controller = new Controller(bus, datastore);


app.set("x-powered-by", false); // to mimic Cisco Spark headers
app.set("etag", false); // to mimic Cisco Spark headers
// Middleware to mimic Cisco Spark HTTP headers
app.use(function (req, res, next) {
  res.setHeader("Cache-Control", "no-cache"); // to mimic Cisco Spark headers
  res.setHeader("Content-Type", "application/json;charset=UTF-8"); // to mimic Cisco Spark headers

  // New Trackingid
  res.locals.trackingId = "EM_" + uuid();
  res.setHeader("Trackingid", res.locals.trackingId);

  next();
});

// Middleware to enforce authentication
const authentication = require("./auth");
app.use(authentication.middleware);

// for parsing application/json in middleware
const bodyParser = require("body-parser");
app.use(bodyParser.json());

// Allow user to set the BOT_UNDER_TEST environmnet var in a .env file
require('dotenv').load();
if (process.env.BOT_UNDER_TEST) {
  app.locals.botUnderTestEmail = process.env.BOT_UNDER_TEST;
  // Middleware to catch requests with the X-Bot-Responses header
  const botTest = require("./bot-test/bot-test");
  app.use(botTest.middleware);

  // Middleware to delay responses until we get the expected bot response
  var botInterceptor = require('./bot-test/bot-interceptor');
  app.use(botInterceptor);
}

// Load initial list of accounts
// eslint-disable-next-line no-unused-vars
const accounts = Object.keys(authentication.tokens).map(function (item, index) {
  return authentication.tokens[item];
});
datastore.people.init(accounts);


//
// Loading services
//
const peopleAPI = require("./resources/people");
app.use("/people", peopleAPI);
const roomsAPI = require("./resources/rooms");
app.use("/rooms", roomsAPI);
const membershipsAPI = require("./resources/memberships");
app.use("/memberships", membershipsAPI);
const messagesAPI = require("./resources/messages");
app.use("/messages", messagesAPI);
const webhooksAPI = require("./resources/webhooks");
app.use("/webhooks", webhooksAPI);

// Public resources
app.locals.started = new Date(Date.now()).toISOString();
var props = require('./package.json');
app.get("/", function(req, res) {
  res.status(200).send({
    "service" : "Mini-Spark",
    "description" : props.description,
    "version" : props.version,
    "up-since" : app.locals.started,
    "creator" : props.author,
    "code": "https://github.com/ObjectIsAdvantag/mini-spark",
    "tokens" : "/tokens",
    "resources": [
      "/people", "/rooms", "/memberships", "/messages", "/webhooks"
    ]
  });
});
app.get("/tokens", function(req, res) {
  res.status(200).send(authentication.tokens);
});


//
// Starting server
//
const port = process.env.PORT || 3210;
app.listen(port, function () {
});