###############################################################################
#
# The MIT License (MIT)
#
# Copyright (c) Tavendo GmbH
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# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
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from os import environ

try:
    import asyncio
except ImportError:
    # Trollius >= 0.3 was renamed
    import trollius as asyncio

from autobahn.wamp.types import PublishOptions, EventDetails, SubscribeOptions
from autobahn.asyncio.wamp import ApplicationSession, ApplicationRunner


class Component(ApplicationSession):
    """
    An application component that subscribes and receives events, and
    stop after having received 5 events.
    """

    @asyncio.coroutine
    def onJoin(self, details):
        self.received = 0

        def on_event(i, details=None):
            print("Got event, publication ID {}, publisher {}: {}".format(details.publication, details.publisher, i))
            self.received += 1
            if self.received > 5:
                self.leave()

        yield from self.subscribe(on_event, u'com.myapp.topic1',
                                  options=SubscribeOptions(details_arg='details'))

    def onDisconnect(self):
        asyncio.get_event_loop().stop()


if __name__ == '__main__':
    runner = ApplicationRunner(
        environ.get("AUTOBAHN_DEMO_ROUTER", u"ws://127.0.0.1:8080/ws"),
        u"crossbardemo",
    )
    runner.run(Component)