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import argparse

import txaio

txaio.use_twisted()

import autobahn
from autobahn.twisted.websocket import (
    WebSocketClientFactory,
    WebSocketClientProtocol,
    connectWS,
)
from autobahn.websocket.compress import (
    PerMessageDeflateOffer,
    PerMessageDeflateResponse,
    PerMessageDeflateResponseAccept,
)
from autobahn.websocket.protocol import WebSocketProtocol
from twisted.internet import reactor


class TesteeClientProtocol(WebSocketClientProtocol):
    def onOpen(self):
        if self.factory.endCaseId is None:
            self.log.info("Getting case count ..")
        elif self.factory.currentCaseId <= self.factory.endCaseId:
            self.log.info(
                "Running test case {case_id}/{last_case_id} as user agent {agent} on peer {peer}",
                case_id=self.factory.currentCaseId,
                last_case_id=self.factory.endCaseId,
                agent=self.factory.agent,
                peer=self.peer,
            )

    def onMessage(self, msg, binary):
        if self.factory.endCaseId is None:
            self.factory.endCaseId = int(msg)
            self.log.info(
                "Ok, will run {case_count} cases", case_count=self.factory.endCaseId
            )
        else:
            if self.state == WebSocketProtocol.STATE_OPEN:
                self.sendMessage(msg, binary)


class TesteeClientFactory(WebSocketClientFactory):
    protocol = TesteeClientProtocol

    def __init__(self, url):
        self.agent = autobahn.twisted.__ident__
        WebSocketClientFactory.__init__(self, url, useragent=self.agent)

        self.setProtocolOptions(failByDrop=False)  # spec conformance

        # enable permessage-deflate WebSocket protocol extension
        offers = [PerMessageDeflateOffer()]
        self.setProtocolOptions(perMessageCompressionOffers=offers)

        def accept(response):
            if isinstance(response, PerMessageDeflateResponse):
                return PerMessageDeflateResponseAccept(response)

        self.setProtocolOptions(perMessageCompressionAccept=accept)

        # setup client testee stuff
        self.endCaseId = None
        self.currentCaseId = 0
        self.updateReports = True
        self.resource = "/getCaseCount"

    def clientConnectionLost(self, connector, reason):
        self.currentCaseId += 1
        if self.currentCaseId <= self.endCaseId:
            self.resource = "/runCase?case={}&agent={}".format(
                self.currentCaseId, self.agent
            )
            connector.connect()
        elif self.updateReports:
            self.resource = "/updateReports?agent={}".format(self.agent)
            self.updateReports = False
            connector.connect()
        else:
            reactor.stop()

    def clientConnectionFailed(self, connector, reason):
        self.log.info(
            "Connection to {url} failed: {error_message}",
            url=self.url,
            error_message=reason.getErrorMessage(),
        )
        reactor.stop()


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Autobahn Testee Client (Twisted)")
    parser.add_argument(
        "--url",
        dest="url",
        type=str,
        default="ws://127.0.0.1:9001",
        help="The WebSocket fuzzing server URL.",
    )
    parser.add_argument(
        "--loglevel",
        dest="loglevel",
        type=str,
        default="info",
        help='Log level, eg "info" or "debug".',
    )

    options = parser.parse_args()

    txaio.start_logging(level=options.loglevel)

    factory = TesteeClientFactory(options.url)

    connectWS(factory)
    reactor.run()
