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 fs = require('fs')
const rfs = require('rotating-file-stream')
const authenticator = require('./middleware/authenticator')

const cors = require('cors')

const indexRouter = require('./routes/index');
const fileRouter = require('./routes/fileserver');


const app = express();

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


app.use(cors({
    exposedHeaders: ['Content-Type', 'Content-Length', "content-disposition"]
}))

app.use(authenticator)

// log only 4xx and 5xx responses to console
app.use(logger('dev', {
    skip: function (req, res) {
        return res.statusCode < 400
    }
}))

// create a rotating write stream
const accessLogStream = rfs.createStream('access.log', {
    interval: '1d', // rotate daily
    path: path.join(__dirname, 'log')
})
// log all requests to access.log
app.use(logger('combined', {
    stream: accessLogStream
}))
app.use(express.json());
app.use(express.urlencoded({extended: false}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(authenticator)

app.use('/', indexRouter);
app.use('/files', fileRouter);

// 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;