class Offer():
    """One Offer for sending.
    This class is used to send a message via a provider.
    """
    def __init__(self, name, provider, route, typ):
        """ Constructor for Offer class.

        :param string name: name is the name in database for the offer
        :param `iro.offer.provider.Provider` provider: A valid provider object.
        :param sting route: used to the the right send function via :meth:`iro.offer.provider.Provider.getSendFunc`.
        :param sting typ: used to the the right send function via :meth:`iro.offer.provider.Provider.getSendFunc`.


        .. automethod:: __call__
        .. automethod:: __eq__
        .. automethod:: __neq__
        .. automethod:: __repr__
        """
        self.name = name
        self.route = route
        self.provider = provider
        self.typ = typ
        self.sendfunc = provider.getSendFunc(typ, route)

    def __call__(self, recipient, message):
        """send a message to a recipient. This method uses :meth:`iro.offer.provider.Provider.send`

        :param recipient: one recipient
        :param `iro.model.message.Message` message: message to send
        """
        return self.sendfunc(recipient, message)

    def __eq__(self,o):
        """return ``True``, if o is equal."""
        return (self.name == o.name) and (self.route == o.route) and (self.provider == o.provider) and (self.typ == o.typ)

    def __neq__(self,o):
        """return ``True``, if ``o`` is not equal (see :meth:`__eq__`)."""
        return not self.__eq__(o)

    def __repr__(self):
        """string representation of this class for debugging purpose.

        :return: ``<Offer(name, provider, route, typ)>`` """
        return "<Offer(%s, %s, %s, %s)>"%(self.name,self.provider,self.route,self.typ)