app.js

var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var session = require('express-session');
var compression = require('compression');
const fileUpload = require('express-fileupload');

const dbconn = require('./db/dbconn');


var indexRouter = require('./routes/index');
var userRouter = require('./routes/user');
var apiRouter = require('./routes/api');

var app = express();
app.use(compression());

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
app.use(fileUpload());
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());


app.use(
    session({
        secret: process.env.SECRET,
        resave:false,
        saveUninitialized: false,
    })
);


app.use((req, res, next) => {
    if (!req.session.user) {
        req.session.dbconn = dbconn.guestconn;
    }
    else if (req.session.user.class === 'admin' || req.session.user.class === 'god') {
        req.session.dbconn = dbconn.adminconn;
    }
    else if (req.session.user.class === 'user') {
        req.session.dbconn = dbconn.userconn;
    }
    else req.session.dbconn = dbconn.guestconn;
    // console.log(req.session.user);
    next();
});



app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/user', userRouter);

app.use('/api', apiRouter);
// 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;