###############################################################################
#
# 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
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# THE SOFTWARE.
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from os import environ

import asyncio
from autobahn.asyncio.wamp import ApplicationSession, ApplicationRunner


class Component(ApplicationSession):
    """
    An application component that subscribes and receives events.
    After receiving 5 events, it unsubscribes, sleeps and then
    resubscribes for another run. Then it stops.
    """

    async def test(self):
        self.received = 0

        async def on_event(i):
            print("Got event: {}".format(i))
            self.received += 1
            if self.received > 5:
                self.runs += 1
                if self.runs > 1:
                    self.leave()
                else:
                    await self.subscription.unsubscribe()

                    print("Unsubscribed .. continue in 5s ..")
                    # can't use loop.call_later() with a coroutine for some reason
                    await asyncio.sleep(5)
                    await self.test()

        self.subscription = await self.subscribe(on_event, 'com.myapp.topic1')
        print("Subscribed with subscription ID {}".format(self.subscription.id))

    async def onJoin(self, details):
        self.runs = 0
        await self.test()

    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)