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 helmet = require('helmet');
var rateLimit = require('express-rate-limit');

var session = require('express-session');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var complaintRouter = require('./routes/complaint');
var signRouter = require('./routes/sign');
var homeRouter = require('./routes/home');
var solverRouter = require('./routes/solver');
var historyRouter = require('./routes/complainthistory');

var app = express();

app.disable('x-powered-by');
app.set('trust proxy', 1);
app.use(helmet());
app.use(rateLimit({
  windowMs: 15 * 60 * 1000,
  max: 100,
  standardHeaders: true,
  legacyHeaders: false
}));
app.use(session({
  secret: process.env.SESSION_SECRET || 'webslesson',
  resave: false,
  saveUninitialized: false,
  cookie: {
    httpOnly: true,
    sameSite: 'lax',
    secure: process.env.NODE_ENV === 'production'
  }
}));
app.use(function(req, res, next) {
  res.locals.role = req.session.Role;
  next();
});

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('/api', indexRouter);
app.use('/api/users', usersRouter);
app.use('/api/complaint', complaintRouter);
app.use('/api/sign', signRouter);
app.use('/api/home', homeRouter);
app.use('/api/solver', solverRouter);
app.use('/api/history', historyRouter);

app.get('*', function(req, res) {
  res.sendFile(path.join(__dirname, 'public', 'index.html'));
});

// 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) {
  res.status(err.status || 500).json({
    message: err.message,
    error: req.app.get('env') === 'development' ? err : {}
  });
});

module.exports = app;