# SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Apache-2.0

import logging
import socket

import pytest
from common_test_methods import (get_env_config_variable, get_host_ip4_by_dest_ip, get_host_ip6_by_dest_ip,
                                 get_my_interface_by_dest_ip)
from pexpect.exceptions import TIMEOUT
from pytest_embedded import Dut

try:
    from run_udp_server import UdpServer
except ImportError:
    import os
    import sys
    sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '..', 'scripts')))
    from run_udp_server import UdpServer


PORT = 3333
MAX_RETRIES = 3


@pytest.mark.esp32
@pytest.mark.wifi_router
def test_examples_udp_client_ipv4(dut: Dut) -> None:
    # Parse IP address of STA
    logging.info('Waiting to connect with AP')
    if dut.app.sdkconfig.get('EXAMPLE_WIFI_SSID_PWD_FROM_STDIN') is True:
        dut.expect('Please input ssid password:')
        env_name = 'wifi_router'
        ap_ssid = get_env_config_variable(env_name, 'ap_ssid')
        ap_password = get_env_config_variable(env_name, 'ap_password')
        dut.write(f'{ap_ssid} {ap_password}')
    ipv4 = dut.expect(r'IPv4 address: (\d+\.\d+\.\d+\.\d+)[^\d]', timeout=30)[1].decode()
    print(f'Connected with IPv4={ipv4}')

    # test IPv4
    with UdpServer(PORT, socket.AF_INET):
        server_ip = get_host_ip4_by_dest_ip(ipv4)
        print('Connect udp client to server IP={}'.format(server_ip))
        for _ in range(MAX_RETRIES):
            try:
                dut.write(server_ip)
                dut.expect('OK: Message from ESP32')
                break
            except TIMEOUT:
                pass
        else:
            raise ValueError('Failed to send/recv udp packets.')


@pytest.mark.esp32
@pytest.mark.wifi_router
def test_examples_udp_client_ipv6(dut: Dut) -> None:
    # Parse IP address of STA
    logging.info('Waiting to connect with AP')
    if dut.app.sdkconfig.get('EXAMPLE_WIFI_SSID_PWD_FROM_STDIN') is True:
        dut.expect('Please input ssid password:')
        env_name = 'wifi_router'
        ap_ssid = get_env_config_variable(env_name, 'ap_ssid')
        ap_password = get_env_config_variable(env_name, 'ap_password')
        dut.write(f'{ap_ssid} {ap_password}')
    ipv4 = dut.expect(r'IPv4 address: (\d+\.\d+\.\d+\.\d+)[^\d]', timeout=30)[1].decode()
    # expect all 8 octets from IPv6 (assumes it's printed in the long form)
    ipv6_r = r':'.join((r'[0-9a-fA-F]{4}',) * 8)
    ipv6 = dut.expect(ipv6_r, timeout=30)[0].decode()
    print(f'Connected with IPv4={ipv4} and IPv6={ipv6}')

    interface = get_my_interface_by_dest_ip(ipv4)
    # test IPv6
    with UdpServer(PORT, socket.AF_INET6):
        server_ip = get_host_ip6_by_dest_ip(ipv6, interface)
        print('Connect udp client to server IP={}'.format(server_ip))
        for _ in range(MAX_RETRIES):
            try:
                dut.write(server_ip)
                dut.expect('OK: Message from ESP32')
                break
            except TIMEOUT:
                pass
        else:
            raise ValueError('Failed to send/recv udpv6 packets.')