###############################################################################
#
# The MIT License (MIT)
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# Copyright (c) Tavendo GmbH
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import sys
from optparse import OptionParser

from twisted.python import log
from twisted.internet import reactor, ssl

from autobahn.twisted.websocket import WebSocketClientFactory, \
    WebSocketClientProtocol, \
    connectWS


class EchoClientProtocol(WebSocketClientProtocol):

    def sendHello(self):
        self.sendMessage("Hello, world!".encode('utf8'))

    def onOpen(self):
        self.sendHello()

    def onMessage(self, payload, isBinary):
        if not isBinary:
            print("Text message received: {}".format(payload.decode('utf8')))
        reactor.callLater(1, self.sendHello)


if __name__ == '__main__':

    log.startLogging(sys.stdout)

    parser = OptionParser()
    parser.add_option("-u", "--url", dest="url", help="The WebSocket URL", default="wss://localhost:9000")
    (options, args) = parser.parse_args()

    # create a WS server factory with our protocol
    ##
    factory = WebSocketClientFactory(options.url, debug=False)
    factory.protocol = EchoClientProtocol

    # SSL client context: default
    ##
    if factory.isSecure:
        contextFactory = ssl.ClientContextFactory()
    else:
        contextFactory = None

    connectWS(factory, contextFactory)
    reactor.run()
