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 session = require("express-session");
const methodOverride = require("method-override");


const homeRouter = require('./routes/home');
const postsRouter = require('./routes/posts');
const sessionsRouter = require('./routes/sessions');
const usersRouter = require('./routes/users');

const app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');

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

app.use(
  session({
    key: "user_sid",
    secret: "super_secret",
    resave: false,
    saveUninitialized: false,
    cookie: {
      expires: 600000,
    },
  })
);

app.use((req, res, next) => {
  if (req.cookies.user_sid && !req.session.user) {
    res.clearCookie("user_sid");
  }
  next();
});

const sessionChecker = (req, res, next) => {
  if (!req.session.user && !req.cookies.user_sid) {
    res.redirect('/');
  } else {
    next();
  }
};

app.use('/', homeRouter);
app.use('/posts', sessionChecker, postsRouter);
app.use('/sessions', sessionsRouter);
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;