const app = require('rill')()
const refreshWith = require('@rill/refresh-with')

// Setup the middleware.
app.use(refreshWith())

// Use the 'res.refreshWith' utility.
// Example `href` is `http://test.com/my-view?modal=hello&test=1`
app.get('/my-view', ({ req, res }, next)=> {
	// Example usecase of removing a modal from the querystring.
	if (req.query.modal) {
		res.refreshWith({ modal: '', success: true })
		// Removes `modal` and adds `success=true`
		res.get('Location') // -> `http://test.com/my-view?success=true&test=1`
	}
})

// Example `referrer` is `http://test.com/my-view?modal=hello&test=1`
app.get('/from-somewhere-else', ({ req, res }, next)=> {
	// Example usecase of redirecting to the previous page while unsetting a modal.
	res.refreshWith({ modal: '', success: true }, { url: 'back', hash: '#top' })
	// Removes `modal` and adds `success=true to the referrer`
	res.get('Location') // -> `http://test.com/my-view?success=true&test=1`
})