# -*- coding: utf-8 -*-
# Copyright (C) PyZMQ Developers
# Distributed under the terms of the Modified BSD License.


import errno
import sys
import time
import struct

from unittest import TestCase
from pytest import mark
import zmq
from zmq.tests import BaseZMQTestCase, skip_pypy, require_zmq_4
from zmq.utils.monitor import recv_monitor_message


class TestSocketMonitor(BaseZMQTestCase):

    @require_zmq_4
    def test_monitor(self):
        """Test monitoring interface for sockets."""
        s_rep = self.context.socket(zmq.REP)
        s_req = self.context.socket(zmq.REQ)
        self.sockets.extend([s_rep, s_req])
        s_req.bind("tcp://127.0.0.1:6666")
        # try monitoring the REP socket
        
        s_rep.monitor("inproc://monitor.rep", zmq.EVENT_CONNECT_DELAYED | zmq.EVENT_CONNECTED | zmq.EVENT_MONITOR_STOPPED)
        # create listening socket for monitor
        s_event = self.context.socket(zmq.PAIR)
        self.sockets.append(s_event)
        s_event.connect("inproc://monitor.rep")
        s_event.linger = 0
        # test receive event for connect event
        s_rep.connect("tcp://127.0.0.1:6666")
        m = recv_monitor_message(s_event)
        if m['event'] == zmq.EVENT_CONNECT_DELAYED:
            self.assertEqual(m['endpoint'], b"tcp://127.0.0.1:6666")
            # test receive event for connected event
            m = recv_monitor_message(s_event)
        self.assertEqual(m['event'], zmq.EVENT_CONNECTED)
        self.assertEqual(m['endpoint'], b"tcp://127.0.0.1:6666")

        # test monitor can be disabled.
        s_rep.disable_monitor()
        m = recv_monitor_message(s_event)
        self.assertEqual(m['event'], zmq.EVENT_MONITOR_STOPPED)

    @require_zmq_4
    def test_monitor_repeat(self):
        s = self.socket(zmq.PULL)
        m = s.get_monitor_socket()
        self.sockets.append(m)
        m2 = s.get_monitor_socket()
        assert m is m2
        s.disable_monitor()
        evt = recv_monitor_message(m)
        self.assertEqual(evt['event'], zmq.EVENT_MONITOR_STOPPED)
        m.close()
        s.close()

    @require_zmq_4
    def test_monitor_connected(self):
        """Test connected monitoring socket."""
        s_rep = self.context.socket(zmq.REP)
        s_req = self.context.socket(zmq.REQ)
        self.sockets.extend([s_rep, s_req])
        s_req.bind("tcp://127.0.0.1:6667")
        # try monitoring the REP socket
        # create listening socket for monitor
        s_event = s_rep.get_monitor_socket()
        s_event.linger = 0
        self.sockets.append(s_event)
        # test receive event for connect event
        s_rep.connect("tcp://127.0.0.1:6667")
        m = recv_monitor_message(s_event)
        if m['event'] == zmq.EVENT_CONNECT_DELAYED:
            self.assertEqual(m['endpoint'], b"tcp://127.0.0.1:6667")
            # test receive event for connected event
            m = recv_monitor_message(s_event)
        self.assertEqual(m['event'], zmq.EVENT_CONNECTED)
        self.assertEqual(m['endpoint'], b"tcp://127.0.0.1:6667")