app.js

const express = require("express");
const bodyParser = require("body-parser");
const createError = require("http-errors");
const path = require("path");
const cookieParser = require("cookie-parser");
const logger = require("morgan");
const cors = require("cors");

const indexRouter = require("./routes/index");
const loginRouter = require("./routes/login");
const registerRouter = require("./routes/register");

const app = express();

app.use(logger("dev"));

// don't show the log when it is test
if (process.env.NODE_ENV !== "test") {
    // use morgan to log at command line
    app.use(logger("combined")); // 'combined' outputs the Apache style LOGs
}

app.use(bodyParser.json()); // for parsing application/json
app.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded


app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(cors());


app.use("/", indexRouter);
app.use("/login", loginRouter);
app.use("/register", registerRouter);


// catch 404 and forward to error handler
app.use(function(req, res, next) {
    next(createError(404));
});

// error handler
app.use(function(err, req, res) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get("env") === "development" ? err : {};

    // render the error page
    res.status(err.status || 500);
    res.render("error");
});

const debug = require("debug")("redovisa:server");
const http = require("http");
//const url = require('url');

/**
 * Get port from environment and store in Express.
 */

const port = normalizePort(process.env.PORT || "1377");

app.set("port", port);

/**
 * Create HTTP server.
 */

const server = http.createServer(app);



/**
 * Normalize a port into a number, string, or false.
 */

function normalizePort(val) {
    var port = parseInt(val, 10);

    if (isNaN(port)) {
        // named pipe
        return val;
    }

    if (port >= 0) {
        // port number
        return port;
    }

    return false;
}

/**
 * Event listener for HTTP server "error" event.
 */

function onError(error) {
    if (error.syscall !== "listen") {
        throw error;
    }

    var bind = typeof port === "string"
        ? 'Pipe ' + port
        : 'Port ' + port;

    // handle specific listen errors with friendly messages
    switch (error.code) {
        case "EACCES":
            console.error(bind + ' requires elevated privileges');
            process.exit(1);
            break;
        case "EADDRINUSE":
            console.error(bind + " is already in use");
            process.exit(1);
            break;
        default:
            throw error;
    }
}



/**
 * Event listener for HTTP server "listening" event.
 */

function onListening() {
    var addr = server.address();

    var bind = typeof addr === "string"
        ? "pipe " + addr
        : "port " + addr.port;

    debug("Listening on " + bind);
}


/**
 * Listen on provided port, on all network interfaces.
 */

server.listen(port);
server.on("error", onError);
server.on("listening", onListening);

console.log(`Example app listening on port ${port}`);


module.exports = server;