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 sassMiddleware = require('node-sass-middleware');
const expressSession = require('express-session');
const firebase = require('firebase');
const htmlToText = require('html-to-text');
require('firebase/auth');

// Middlewares
const sessionPersistedMiddleware = require('./middlewares/sessionPersisted');

// Firebase config
const firebaseConfig = {
  apiKey: process.env.FIREBASE_APIKEY,
  authDomain: process.env.FIREBASE_AUTHDOMAIN,
  databaseURL: process.env.FIREBASE_DATABASEURL,
  storageBucket: process.env.FIREBASE_STORAGEBUCKET,
  messagingSenderId: process.env.FIREBASE_SENDERID
}

// Initialized firebase
firebase.initializeApp(firebaseConfig);

// Pages
const indexRouter = require('./routes/index');
const authRouter = require('./routes/auth');
const publicationRouter = require('./routes/publication');
const commentRouter = require('./routes/comment');

// API
const authApiRouter = require('./routes/api/auth');
const usersApiRouter = require('./routes/api/users');
const publicationsApiRouter = require('./routes/api/publications');
const tagsApiRouter = require('./routes/api/tags');

const app = express();

// Locals
app.locals.moment = require('moment');
app.locals.truncate = (text) => (text.length < 180) ? text : text.substring(0,180) + '...'
app.locals.htmlToText = (html) => htmlToText.fromString(html)

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


// Session
app.use(expressSession({
  secret: process.env.SESSION_KEY || 'secret',
  resave: false,
  saveUninitialized: false,
}))

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(sassMiddleware({
  src: path.join(__dirname, 'public'),
  dest: path.join(__dirname, 'public'),
  indentedSyntax: false, // true = .sass and false = .scss
  sourceMap: true
}));
app.use(express.static(path.join(__dirname, 'public')));

// Session-persisted message middleware
app.use(sessionPersistedMiddleware);

app.use('/', indexRouter);
app.use('/auth', authRouter);
app.use('/publication', publicationRouter)
app.use('/comment', commentRouter);
app.use('/api/auth', authApiRouter);
app.use('/api/users', usersApiRouter);
app.use('/api/publications', publicationsApiRouter);
app.use('/api/tags', tagsApiRouter);

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

// error handler
app.use((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 : {};
  const statusCode = err.status || 500;

  // render the error API
  if (/.api/.test(req.url)) {
    return res.status(statusCode).json({
      code: statusCode,
      message: err.message
    });
  }

  // render the error page
  return res.status(statusCode).render('error');
});

module.exports = app;