server.js

/* Express module setup */

const express = require("express");
const server = express();
const login = require("./routes/login.js");
const addPost = require("./routes/addPost.js");
const deletePost = require("./routes/deletePost.js");
const authenticate = require("./routes/authenticate.js");
const posts = require("./routes/posts.js");
const logout = require("./routes/logout");

const layout = require("./layout.js");

const signUp = require("./routes/signUp");

// Body parser middleware to parse request body
const bodyParser = express.urlencoded({ extended: false });
server.use(bodyParser);

// add static handler to have access to all files inside public
const staticHandler = express.static("public");
server.use(staticHandler);

// allow your server to read cookies from incoming requests. It will parse the cookie into an object, then attach it to the request object for you to use
const cookieParser = require("cookie-parser");
server.use(cookieParser(process.env.COOKIE_SECRET));

const { STATUS_CODES } = require("http");

function handleErrors(error, request, response, next) {
  const status = error.status || 500;

  response.status(status);

  const isProd = process.env.NODE_ENV === "production";
  if (isProd) {
    const message = STATUS_CODES[status];
    response.send(
      layout(
        "ERROR",
        `
      ${error.message}
      <p>Error ${status}-${message}</p> 
      <a href="/">Back to Login</a>
      `
      )
    );
  } else {
    response.send(`<pre>${error.stack}</pre>`);
  }
}

function checkAuth(request, response, next) {
  const sid = request.signedCookies.sid;
  if (!sid) {
    response.status(401).redirect("/");
  } else {
    next();
  }
}

// Routes

server.get("/", login.get);
server.post("/", login.post);

// connect post and get function to the server.
server.get("/sign-up", signUp.get);
server.post("/sign-up", signUp.post);

server.get("/add-post", checkAuth, addPost.get);
server.post("/add-post", checkAuth, addPost.post);

server.post("/delete-post", checkAuth, deletePost.post);

server.get("/authenticate", authenticate.get);

server.get("/posts", checkAuth, posts.get);

server.post("/log-out", checkAuth, logout.post);

server.use(handleErrors);

// assign port to deployed or local port
const PORT = process.env.PORT || 3000;

server.listen(PORT, () => {
  console.log(`http://localhost:${PORT}`);
});