#!/usr/bin/env python
from json import dumps

from circuits import Component, handler
from circuits.web import Controller, Logger, Server


class JSONSerializer(Component):
    channel = 'web'

    # 1 higher than the default response handler
    @handler('response', priority=1.0)
    def serialize_response_body(self, response):
        response.headers['Content-Type'] = 'application/json'
        response.body = dumps(response.body)


class Root(Controller):
    def index(self):
        return {'message': 'Hello World!'}


app = Server(('0.0.0.0', 8000))
JSONSerializer().register(app)
Logger().register(app)
Root().register(app)
app.run()