auth.py

class CoreAuthenticationManager:
	def start(self):
		document.addEventListener('submit', delegated('#authenticate', self.processAuthenticationForm))
	
	def processAuthenticationForm(self, event, form):
		event.preventDefault()
		event.stopPropagation()
		
		form.classList.remove('invalid')
		
		identity = document.getElementById('auth-email')
		password = document.getElementById('auth-password')
		
		if not identity.value:
			identity.focus()
			return
		
		if not password.value:
			password.focus()
			return
		
		def callback(err, response, body):
			if response.status == 401 or response.status == 403:
				form.classList.add('invalid')
				return
			
			if response.status != 200:
				form.classList.add('error')
				return
			
			result = JSON.parse(body)
			
			if not result.ok:
				form.dataset.message = result.message
				form.classList.add('message')
				return
			
			# TODO: Temporarily while I refactor the NavigationManager...
			window.location = window.location
		
		# TODO: Same temporary note here re: NavigationManager...
		request({'method': form.method, 'url': form.action, 'json': {
				'identity': identity.value,
				'password': password.value,
			}, 'headers': {
				'X-Requested-With': 'XMLHttpRequest',
			}}, callback)