###############################################################################
#
# The MIT License (MIT)
#
# Copyright (c) typedef int GmbH
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# THE SOFTWARE.
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import asyncio
from os import environ
from autobahn.wamp.types import CallOptions, RegisterOptions, PublishOptions
from autobahn.asyncio.wamp import ApplicationSession, ApplicationRunner


class Component(ApplicationSession):
    """
    An application component calling the different backend procedures.
    """

    async def onJoin(self, details):

        def on_event(val):
            print("Someone requested to square non-positive: {}".format(val))

        await self.subscribe(on_event, 'com.myapp.square_on_nonpositive')

        for val in [2, 0, -2]:
            res = await self.call('com.myapp.square', val, options=CallOptions())
            print("Squared {} = {}".format(val, res))

        await self.leave()

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


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