from socketify import App


def middleware(*functions):
    def middleware_route(res, req):
        data = None
        #cicle to all middlewares
        for function in functions:
            #call middlewares
            data = function(res, req, data)
            #stops if returns Falsy
            if not data:
                break

    return middleware_route
    
def get_user(authorization_header):
    if authorization_header:
        return { 'greeting': 'Hello, World' }
    return None

def auth(res, req, data=None):
    user = get_user(req.get_header('authorization'))
    if not user: 
        res.write_status(403).end("not authorized")
        return False

    #returns extra data
    return user

def home(res, req, user=None):
    res.end(user.get('greeting', None))

app = App()
app.get("/", middleware(auth, home))
app.listen(3000, lambda config: print("Listening on port http://localhost:%d now\n" % config.port))
app.run()