from six.moves.urllib.parse import urlparse, parse_qsl


class Request(object):

    def __init__(self, method, uri, body, headers):
        self.method = method
        self.uri = uri
        self.body = body
        self.headers = headers

    def add_header(self, key, value):
        self.headers[key] = value

    @property
    def scheme(self):
        return urlparse(self.uri).scheme

    @property
    def host(self):
        return urlparse(self.uri).hostname

    @property
    def port(self):
        return urlparse(self.uri).port

    @property
    def path(self):
        return urlparse(self.uri).path

    @property
    def query(self):
        q = urlparse(self.uri).query
        return sorted(parse_qsl(q))

    # alias for backwards compatibility
    @property
    def url(self):
        return self.uri

    # alias for backwards compatibility
    @property
    def protocol(self):
        return self.scheme

    def __str__(self):
        return "<Request ({0}) {1}>".format(self.method, self.uri)

    def __repr__(self):
        return self.__str__()

    def _to_dict(self):
        return {
            'method': self.method,
            'uri': self.uri,
            'body': self.body,
            'headers': dict(self.headers),
        }

    @classmethod
    def _from_dict(cls, dct):
        return Request(**dct)