app.js

/**
 * Module dependencies.
 */
const express = require("express");
const compression = require("compression");
const bodyParser = require("body-parser");
const logger = require("morgan");
const chalk = require("chalk");
const errorHandler = require("errorhandler");
const dotenv = require("dotenv");
const path = require("path");
const mongoose = require("mongoose");
const expressValidator = require("express-validator");
const expressStatusMonitor = require("express-status-monitor");
const sass = require("node-sass-middleware");
const cors = require("cors");

/**
 * Load environment variables from .env file, where API keys and passwords are configured.
 */
dotenv.load({ path: ".env" });

/**
 * Controllers (route handlers).
 */
const apiController = require("./controllers/api");

/**
 * Create Express server.
 */
const app = express();

/**
 * Connect to MongoDB.
 */
mongoose.Promise = global.Promise;
mongoose.connect(
  process.env.MONGODB_URI || "mongodb://localhost:27017/vlctechhub",
  {
    user: process.env.MONGODB_USER,
    pass: process.env.MONGODB_PASS
  }
);
mongoose.connection.on("error", err => {
  console.error(err);
  console.log(
    "%s MongoDB connection error. Please make sure MongoDB is running.",
    chalk.red("✗")
  );
  process.exit();
});

/**
 * Express configuration.
 */
app.set("host", process.env.OPENSHIFT_NODEJS_IP || "0.0.0.0");
app.set("port", process.env.PORT || process.env.OPENSHIFT_NODEJS_PORT || 8080);
app.use(cors());
app.use(expressStatusMonitor());
app.use(compression());
app.use(logger("dev"));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(expressValidator());

/**
 * API routes.
 */
app.post("/user/:type", apiController.postUser);
app.put("/user/:type", apiController.updateUser);
app.delete("/user/:type", apiController.removeUser);

/**
 * Error Handler.
 */
app.use(errorHandler());

/**
 * Start Express server.
 */
app.listen(app.get("port"), () => {
  console.log(
    "%s App is running at http://localhost:%d in %s mode",
    chalk.green("✓"),
    app.get("port"),
    app.get("env")
  );
  console.log("  Press CTRL-C to stop\n");
});

module.exports = app;