app.js

//constants
const express = require('express');
const app = express();
const session = require('express-session');
const db = require('./database');


app.use(express.urlencoded({ extended: true }));

app.set('view engine', 'pug');
app.use(express.static('public'));

//start session
app.use(session({
  secret: 'keyis123',  
  resave: false,
  saveUninitialized: true,
  cookie: { secure: 'auto' }  
}));

app.use(express.json()); 

//POST Routes from routes folder
const loginRoutes = require('./routes/loginRoutes');
const registrationRoutes = require('./routes/registrationRoutes');
const dashboardRoutes = require('./routes/dashboardRoutes');
const feedbackRoutes = require('./routes/feedbackRoutes');
const dataRoutes = require('./routes/dataRoutes');
const weatherPredictionRoutes = require('./routes/weatherPredictionRoutes');



app.use('/', loginRoutes);
app.use('/register', registrationRoutes);
app.use('/', dashboardRoutes);
app.use('/', feedbackRoutes);
app.use('/', dataRoutes);
app.use('/', weatherPredictionRoutes)


//Get routes
app.get('/', (req, res) => {
  res.render('index', {
    title: 'Home Page'
  });
});


app.get('/index', (req, res) => {
  res.render('index', {
    title: 'Home Page'
  });
});

app.get('/users', (req, res) => {
  res.render('users', {
    title: 'Login Page'
  });
});

app.get('/users/register', (req, res) => {
  res.render('register', {
    title: 'Registration Page'
  });
});

app.get('/admin', (req, res) => {
  res.render('admin', {
    title: 'Login Page'
  });
});

//special admin logged in route
app.get('/login', (req, res) => {
  const data = {};

  db.all("SELECT * FROM Feedback", [], (err, feedback) => {
      if (err) {
          console.error(err);
          res.status(500).send('An error occurred retrieving feedback');
          return;
      }
      data.feedback = feedback;

      
      db.all("SELECT * FROM Historical_Data ORDER BY HId DESC", [], (err, historicalData) => {
          if (err) {
              console.error(err);
              res.status(500).send('An error occurred retrieving historical data');
              return;
          }
          data.historicalData = historicalData;

          
          res.render('login', {
              ...data
          });
      });
  });
});


//special dashboard logged in route
app.get('/dashboard', (req, res) => {
  if (req.session.userId) {
      res.render('dashboard', {
          title: 'User Dashboard',
          username: req.session.username,
          predictionResult: req.session.predictionResult, 
          dateForPrediction: req.session.dateForPrediction
      });
  } else {
      res.redirect('/users');
  }
});


//middleware
app.use((err, req, res, next) => {
  console.error(err.stack); 
  res.status(500).send('Internal Server Error');
});

//server
app.listen(1234, () => {
  console.log("Server is running at: http://localhost:1234");
});