#!/usr/bin/env python3

from mosq_test_helper import *

def write_config(filename, port1, port2):
    with open(filename, 'w') as f:
        f.write("port %d\n" % (port1))
        f.write("\n")
        f.write("listener %d\n" % (port2))
        f.write("mount_point mount/\n")
        f.write("\n")
        f.write("log_type debug\n")


def helper(port, proto_ver):
    connect_packet = mosq_test.gen_connect("test-helper", keepalive=60, proto_ver=proto_ver)
    connack_packet = mosq_test.gen_connack(rc=0, proto_ver=proto_ver)

    publish_packet = mosq_test.gen_publish("test", qos=0, payload="mount point", proto_ver=proto_ver)

    sock = mosq_test.do_client_connect(connect_packet, connack_packet, port=port, connack_error="helper connack")
    sock.send(publish_packet)
    sock.close()


def do_test(proto_ver):
    (port1, port2) = mosq_test.get_port(2)
    conf_file = os.path.basename(__file__).replace('.py', '.conf')
    write_config(conf_file, port1, port2)

    rc = 1
    keepalive = 60
    connect_packet = mosq_test.gen_connect("test2", keepalive=keepalive, proto_ver=proto_ver)
    connack_packet = mosq_test.gen_connack(rc=0, proto_ver=proto_ver)

    mid = 1
    subscribe_packet = mosq_test.gen_subscribe(mid, "#", 0, proto_ver=proto_ver)
    suback_packet = mosq_test.gen_suback(mid, 0, proto_ver=proto_ver)

    publish_packet = mosq_test.gen_publish("mount/test", qos=0, payload="mount point", proto_ver=proto_ver)

    broker = mosq_test.start_broker(filename=os.path.basename(__file__), use_conf=True, port=port1)

    try:
        sock = mosq_test.do_client_connect(connect_packet, connack_packet, timeout=20, port=port1)
        mosq_test.do_send_receive(sock, subscribe_packet, suback_packet, "suback")

        helper(port2, proto_ver)
        # Should have now received a publish command

        if mosq_test.expect_packet(sock, "publish", publish_packet):
            rc = 0

        sock.close()
    finally:
        os.remove(conf_file)
        broker.terminate()
        broker.wait()
        (stdo, stde) = broker.communicate()
        if rc:
            print(stde.decode('utf-8'))
            print("proto_ver=%d" % (proto_ver))
            exit(rc)


do_test(proto_ver=4)
do_test(proto_ver=5)
exit(0)