# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Unlicense OR CC0-1.0
import re
import ssl
import sys
from threading import Event
from threading import Thread

import paho.mqtt.client as mqtt
import pexpect
import pytest
from pytest_embedded_idf.utils import idf_parametrize

event_client_connected = Event()
event_stop_client = Event()
event_client_received_correct = Event()
message_log = ''


# The callback for when the client receives a CONNACK response from the server.
def on_connect(client, userdata, flags, rc):  # type: (mqtt.Client, str, bool, str) -> None
    _ = (userdata, flags)
    print('Connected with result code ' + str(rc))
    event_client_connected.set()
    client.subscribe('topic/qos0')


def mqtt_client_task(client):  # type: (mqtt.Client) -> None
    while not event_stop_client.is_set():
        client.loop()


# The callback for when a PUBLISH message is received from the server.
def on_message(client, userdata, msg):  # type: (mqtt.Client, tuple, mqtt.client.MQTTMessage) -> None
    global message_log
    global event_client_received_correct

    payload = msg.payload.decode()
    if not event_client_received_correct.is_set() and payload == 'data':
        if msg.topic == 'topic/qos0' and payload == 'data':
            event_client_received_correct.set()
    message_log += 'Received data:' + msg.topic + ' ' + payload + '\n'


@pytest.mark.ethernet
@idf_parametrize('target', ['esp32'], indirect=['target'])
def test_examples_protocol_mqtt_ssl(dut):  # type: ignore
    broker_url = ''
    broker_port = 0
    """
    steps:
      1. join AP and connects to ssl broker
      2. Test connects a client to the same broker
      3. Test evaluates python client received correct qos0 message
      4. Test ESP32 client received correct qos0 message
    """
    # Look for host:port in sdkconfig
    try:
        value = re.search(r'\:\/\/([^:]+)\:([0-9]+)', dut.app.sdkconfig.get('EXAMPLE_MQTT_BROKER_URI'))
        assert value is not None
        broker_url = value.group(1)
        broker_port = int(value.group(2))
    except Exception:
        print('ENV_TEST_FAILURE: Cannot find broker url in sdkconfig')
        raise
    # 1. Test connects to a broker
    try:
        client = mqtt.Client()
        client.on_connect = on_connect
        client.on_message = on_message
        client.tls_set(None, None, None, cert_reqs=ssl.CERT_NONE, tls_version=ssl.PROTOCOL_TLSv1_2, ciphers=None)
        client.tls_insecure_set(True)
        print('Connecting...')
        client.connect(broker_url, broker_port, 60)
    except Exception:
        print(f'ENV_TEST_FAILURE: Unexpected error while connecting to broker {broker_url}: {sys.exc_info()[0]}:')
        raise
    # Starting a py-client in a separate thread
    thread1 = Thread(target=mqtt_client_task, args=(client,))
    thread1.start()
    try:
        print(f'Connecting py-client to broker {broker_url}:{broker_port}...')
        if not event_client_connected.wait(timeout=30):
            raise ValueError(f'ENV_TEST_FAILURE: Test script cannot connect to broker: {broker_url}')
        try:
            ip_address = dut.expect(r'IPv4 address: (\d+\.\d+\.\d+\.\d+)[^\d]', timeout=30)[0]
            print(f'Connected to AP with IP: {ip_address}')
        except pexpect.TIMEOUT:
            print('ENV_TEST_FAILURE: Cannot connect to AP')
            raise
        print('Checking py-client received msg published from esp...')
        if not event_client_received_correct.wait(timeout=30):
            raise ValueError(f'Wrong data received, msg log: {message_log}')
        print('Checking esp-client received msg published from py-client...')
    finally:
        event_stop_client.set()
        thread1.join()