app.js

const createError = require("http-errors");
const express = require("express");
const path = require("path");
const cookieParser = require("cookie-parser");
const logger = require("morgan");
const ejs = require("ejs");
const ejsLayout = require("express-ejs-layouts");

let indexRouter = require("./routes/index");
let usersRouter = require("./routes/users");

let app = express();

// view engine setup
app.set("views", path.join(__dirname, "views"));
app.set("view engine", "html");
app.engine("html", ejs.renderFile);
// express-ejs-layouts
app.set("layout", "layouts/layout");
app.set("layout extractStyles", true);
app.set("layout extractScripts", true);
app.use(ejsLayout);

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

app.use("/", indexRouter);
app.use("/users", usersRouter);

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

// error handler
app.use(function (err, req, res, next) {
  // 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");
});

module.exports = app;