const path = require('path');

const express = require('express');

const compression = require('compression');

const app = express();

const frontend = require('./frontend');

const backend = require('./backend');

const {

apiEndpoint,

credentials,

} = require('../environment');

app.use(compression());

app.use((req, res, next) => {

if (req.hostname === 'algo-visualizer.jasonpark.me') {

res.redirect(301, 'https://algorithm-visualizer.org/');

} else if (credentials && !req.secure) {

res.redirect(301, `https://${req.hostname}${req.url}`);

} else {

next();

}

});

app.get('/robots.txt', (req, res) => {

res.sendFile(path.resolve(__dirname, '..', 'robots.txt'));

});

app.use(apiEndpoint, backend);

app.use(frontend);

module.exports = app;