#
#    Copyright (c) 2022 Project CHIP Authors
#    All rights reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License");
#    you may not use this file except in compliance with the License.
#    You may obtain a copy of the License at
#
#        http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS,
#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#    See the License for the specific language governing permissions and
#    limitations under the License.
#

import argparse
from binascii import unhexlify, hexlify
import logging
from chip import ChipDeviceCtrl
import chip.clusters as Clusters
from chip.ChipStack import *
from chip.storage import PersistentStorage
import chip.logging
import chip.native
import chip.FabricAdmin
from chip.utils import CommissioningBuildingBlocks
import builtins
from typing import Optional
from dataclasses import dataclass, field
from dataclasses import asdict as dataclass_asdict
import re
import os
import sys
import pathlib
import json
import uuid
import asyncio

from mobly import base_test
from mobly.config_parser import TestRunConfig, ENV_MOBLY_LOGPATH
from mobly import logger
from mobly import signals
from mobly import utils
from mobly.test_runner import TestRunner


# TODO: Add utility to commission a device if needed
# TODO: Add utilities to keep track of controllers/fabrics

logger = logging.getLogger("matter.python_testing")
logger.setLevel(logging.INFO)

DiscoveryFilterType = ChipDeviceCtrl.DiscoveryFilterType

_DEFAULT_ADMIN_VENDOR_ID = 0xFFF1
_DEFAULT_STORAGE_PATH = "admin_storage.json"
_DEFAULT_LOG_PATH = "/tmp/matter_testing/logs"
_DEFAULT_CONTROLLER_NODE_ID = 112233
_DEFAULT_DUT_NODE_ID = 111
_DEFAULT_TRUST_ROOT_INDEX = 1

# Mobly cannot deal with user config passing of ctypes objects,
# so we use this dict of uuid -> object to recover items stashed
# by reference.
_GLOBAL_DATA = {}


def stash_globally(o: object) -> str:
    id = str(uuid.uuid1())
    _GLOBAL_DATA[id] = o
    return id


def unstash_globally(id: str) -> object:
    return _GLOBAL_DATA.get(id)


def default_paa_rootstore_from_root(root_path: pathlib.Path) -> Optional[pathlib.Path]:
    """Attempt to find a PAA trust store following SDK convention at `root_path`

    This attempts to find {root_path}/credentials/development/paa-root-certs.

    Returns the fully resolved path on success or None if not found.
    """
    start_path = root_path.resolve()
    cred_path = start_path.joinpath("credentials")
    dev_path = cred_path.joinpath("development")
    paa_path = dev_path.joinpath("paa-root-certs")

    return paa_path.resolve() if all([path.exists() for path in [cred_path, dev_path, paa_path]]) else None


def get_default_paa_trust_store(root_path: pathlib.Path) -> pathlib.Path:
    """Attempt to find a PAA trust store starting at `root_path`.

    This tries to find by various heuristics, and goes up one level at a time
    until found. After a given number of levels, it will stop.

    This returns `root_path` if not PAA store is not found.
    """
    # TODO: Add heuristics about TH default PAA location
    cur_dir = pathlib.Path.cwd()
    max_levels = 10

    for level in range(max_levels):
        paa_trust_store_path = default_paa_rootstore_from_root(cur_dir)
        if paa_trust_store_path is not None:
            return paa_trust_store_path

        # Go back one level
        cur_dir = cur_dir.joinpath("..")
    else:
        # On not having found a PAA dir, just return current dir to avoid blow-ups
        return pathlib.Path.cwd()


@dataclass
class MatterTestConfig:
    storage_path: pathlib.Path = None
    logs_path: pathlib.Path = None
    paa_trust_store_path: pathlib.Path = None

    admin_vendor_id: int = _DEFAULT_ADMIN_VENDOR_ID
    global_test_params: dict = field(default_factory=dict)
    # List of explicit tests to run by name. If empty, all tests will run
    tests: list[str] = field(default_factory=list)

    commissioning_method: str = None
    discriminator: int = None
    setup_passcode: int = None

    qr_code_content: str = None
    manual_code: str = None

    wifi_ssid: str = None
    wifi_passphrase: str = None
    thread_operational_dataset: str = None

    # Node ID for basic DUT
    dut_node_id: int = _DEFAULT_DUT_NODE_ID
    # Node ID to use for controller/commissioner
    controller_node_id: int = _DEFAULT_CONTROLLER_NODE_ID
    # Fabric ID which to use
    fabric_id: int = None
    # "Alpha" by default
    root_of_trust_index: int = _DEFAULT_TRUST_ROOT_INDEX

    # If this is set, we will reuse root of trust keys at that location
    chip_tool_credentials_path: pathlib.Path = None


class MatterStackState:
    def __init__(self, config: MatterTestConfig):
        self._logger = logger
        self._config = config
        self._fabric_admins = []

        if not hasattr(builtins, "chipStack"):
            chip.native.Init()
            if config.storage_path is None:
                raise ValueError("Must have configured a MatterTestConfig.storage_path")
            self._init_stack(already_initialized=False, persistentStoragePath=config.storage_path)
            self._we_initialized_the_stack = True
        else:
            self._init_stack(already_initialized=True)
            self._we_initialized_the_stack = False

    def _init_stack(self, already_initialized: bool, **kwargs):
        if already_initialized:
            self._chip_stack = builtins.chipStack
            self._logger.warn(
                "Re-using existing ChipStack object found in current interpreter: storage path %s will be ignored!" % (self._config.storage_path))
            # TODO: Warn that storage will not follow what we set in config
        else:
            self._chip_stack = ChipStack(**kwargs)
            builtins.chipStack = self._chip_stack

        self._storage = self._chip_stack.GetStorageManager()

        try:
            admin_list = self._storage.GetReplKey('fabricAdmins')
            found_admin_list = True
        except KeyError:
            found_admin_list = False

        if not found_admin_list:
            self._logger.warn("No previous fabric administrative data found in persistent data: initializing a new one")
            self._fabric_admins.append(chip.FabricAdmin.FabricAdmin(self._config.admin_vendor_id))
        else:
            for admin_idx in admin_list:
                self._logger.info(
                    f"Restoring FabricAdmin from storage to manage FabricId {admin_list[admin_idx]['fabricId']}, AdminIndex {admin_idx}")
                self._fabric_admins.append(chip.FabricAdmin.FabricAdmin(vendorId=int(admin_list[admin_idx]['vendorId']),
                                           fabricId=admin_list[admin_idx]['fabricId'], adminIndex=int(admin_idx)))

    # TODO: support getting access to chip-tool credentials issuer's data

    def Shutdown(self):
        if self._we_initialized_the_stack:
            # Unfortunately, all the below are singleton and possibly
            # managed elsewhere so we have to be careful not to touch unless
            # we initialized ourselves.
            ChipDeviceCtrl.ChipDeviceController.ShutdownAll()
            chip.FabricAdmin.FabricAdmin.ShutdownAll()
            global_chip_stack = builtins.chipStack
            global_chip_stack.Shutdown()

    @property
    def fabric_admins(self):
        return self._fabric_admins

    @property
    def storage(self) -> PersistentStorage:
        return self._storage

    @property
    def stack(self) -> ChipStack:
        return builtins.chipStack


def bytes_from_hex(hex: str) -> bytes:
    """Converts any `hex` string representation including `01:ab:cd` to bytes

    Handles any whitespace including newlines, which are all stripped.
    """
    return unhexlify("".join(hex.replace(":", "").replace(" ", "").split()))


def hex_from_bytes(b: bytes) -> str:
    """Converts a bytes object `b` into a hex string (reverse of bytes_from_hex)"""
    return hexlify(b).decode("utf-8")


class MatterBaseTest(base_test.BaseTestClass):
    def __init__(self, *args):
        super().__init__(*args)

    @property
    def matter_test_config(self) -> MatterTestConfig:
        return unstash_globally(self.user_params.get("matter_test_config"))

    @property
    def default_controller(self) -> ChipDeviceCtrl:
        return unstash_globally(self.user_params.get("default_controller"))

    @property
    def matter_stack(self) -> MatterStackState:
        return unstash_globally(self.user_params.get("matter_stack"))

    @property
    def dut_node_id(self) -> int:
        return self.matter_test_config.dut_node_id

    async def read_single_attribute(self, dev_ctrl: ChipDeviceCtrl, node_id: int, endpoint: int, attribute: object) -> object:
        result = await dev_ctrl.ReadAttribute(node_id, [(endpoint, attribute)])
        data = result[endpoint]
        return list(data.values())[0][attribute]


def generate_mobly_test_config(matter_test_config: MatterTestConfig):
    test_run_config = TestRunConfig()
    # We use a default name. We don't use Mobly YAML configs, so that we can be
    # freestanding without relying
    test_run_config.testbed_name = "MatterTest"

    log_path = matter_test_config.logs_path
    log_path = _DEFAULT_LOG_PATH if log_path is None else log_path
    if ENV_MOBLY_LOGPATH in os.environ:
        log_path = os.environ[ENV_MOBLY_LOGPATH]

    test_run_config.log_path = log_path
    # TODO: For later, configure controllers
    test_run_config.controller_configs = {}

    test_run_config.user_params = matter_test_config.global_test_params

    return test_run_config


def _find_test_class():
    """Finds the test class in a test script.
    Walk through module members and find the subclass of MatterBaseTest. Only
    one subclass is allowed in a test script.
    Returns:
      The test class in the test module.
    Raises:
      SystemExit: Raised if the number of test classes is not exactly one.
    """
    subclasses = utils.find_subclasses_in_module([MatterBaseTest], sys.modules['__main__'])
    subclasses = [c for c in subclasses if c.__name__ != "MatterBaseTest"]
    if len(subclasses) != 1:
        print(
            'Exactly one subclass of `MatterBaseTest` should be in the main file. Found %s.' %
            str([subclass.__name__ for subclass in subclasses]))
        sys.exit(1)

    return subclasses[0]


def int_decimal_or_hex(s: str) -> int:
    val = int(s, 0)
    if val < 0:
        raise ValueError("Negative values not supported")
    return val


def byte_string_from_hex(s: str) -> bytes:
    return unhexlify(s.replace(":", "").replace(" ", "").replace("0x", ""))


def int_from_manual_code(s: str) -> int:
    regex = r"^([0-9]{11}|[0-9]{21})$"
    match = re.match(regex, s)
    if not match:
        raise ValueError("Invalid manual code format, does not match %s" % regex)

    return int(s, 10)


def int_named_arg(s: str) -> tuple[str, int]:
    regex = r"^(?P<name>[a-zA-Z_0-9.]+):((?P<hex_value>0x[0-9a-fA-F_]+)|(?P<decimal_value>-?\d+))$"
    match = re.match(regex, s)
    if not match:
        raise ValueError("Invalid int argument format, does not match %s" % regex)

    name = match.group("name")
    if match.group("hex_value"):
        value = int(match.group("hex_value"), 0)
    else:
        value = int(match.group("decimal_value"), 10)
    return (name, value)


def str_named_arg(s: str) -> tuple[str, str]:
    regex = r"^(?P<name>[a-zA-Z_0-9.]+):(?P<value>.*)$"
    match = re.match(regex, s)
    if not match:
        raise ValueError("Invalid string argument format, does not match %s" % regex)

    return (match.group("name"), match.group("value"))


def float_named_arg(s: str) -> tuple[str, float]:
    regex = r"^(?P<name>[a-zA-Z_0-9.]+):(?P<value>.*)$"
    match = re.match(regex, s)
    if not match:
        raise ValueError("Invalid float argument format, does not match %s" % regex)

    name = match.group("name")
    value = float(match.group("value"))

    return (name, value)


def json_named_arg(s: str) -> tuple[str, object]:
    regex = r"^(?P<name>[a-zA-Z_0-9.]+):(?P<value>.*)$"
    match = re.match(regex, s)
    if not match:
        raise ValueError("Invalid JSON argument format, does not match %s" % regex)

    name = match.group("name")
    value = json.loads(match.group("value"))

    return (name, value)


def bool_named_arg(s: str) -> tuple[str, bool]:
    regex = r"^(?P<name>[a-zA-Z_0-9.]+):((?P<truth_value>true|false)|(?P<decimal_value>[01]))$"
    match = re.match(regex, s.lower())
    if not match:
        raise ValueError("Invalid bool argument format, does not match %s" % regex)

    name = match.group("name")
    if match.group("truth_value"):
        value = True if match.group("truth_value") == "true" else False
    else:
        value = int(match.group("decimal_value")) != 0

    return (name, value)


def bytes_as_hex_named_arg(s: str) -> tuple[str, bytes]:
    regex = r"^(?P<name>[a-zA-Z_0-9.]+):(?P<value>[0-9a-fA-F:]+)$"
    match = re.match(regex, s)
    if not match:
        raise ValueError("Invalid bytes as hex argument format, does not match %s" % regex)

    name = match.group("name")
    value_str = match.group("value")
    value_str = value_str.replace(":", "")
    if len(value_str) % 2 != 0:
        raise ValueError("Byte string argument value needs to be event number of hex chars")
    value = unhexlify(value_str)

    return (name, value)


def root_index(s: str) -> int:
    CHIP_TOOL_COMPATIBILITY = {
        "alpha": 1,
        "beta": 2,
        "gamma": 3
    }

    for name, id in CHIP_TOOL_COMPATIBILITY.items():
        if s.lower() == name:
            return id
    else:
        root_index = int(s)
        if root_index == 0:
            raise ValueError("Only support root index >= 1")
        return root_index


def populate_commissioning_args(args: argparse.Namespace, config: MatterTestConfig) -> bool:
    if args.commissioning_method is None:
        return True

    config.commissioning_method = args.commissioning_method

    if args.dut_node_id is None:
        print("error: When --commissioning-method present, --dut-node-id is mandatory!")
        return False
    config.dut_node_id = args.dut_node_id

    if args.discriminator is None and (args.qr_code is None and args.manual_code is None):
        print("error: Missing --discriminator when no --qr-code/--manual-code present!")
        return False
    config.discriminator = args.discriminator

    if args.passcode is None and (args.qr_code is None and args.manual_code is None):
        print("error: Missing --passcode when no --qr-code/--manual-code present!")
        return False
    config.setup_passcode = args.passcode

    if args.qr_code is not None and args.manual_code is not None:
        print("error: Cannot have both --qr-code and --manual-code present!")
        return False

    config.qr_code_content = args.qr_code
    config.manual_code = args.manual_code

    config.root_of_trust_index = args.root_index
    # Follow root of trust index if ID not provided to have same behavior as legacy
    # chip-tool that fabricID == commissioner_name == root of trust index
    config.fabric_id = args.fabric_id if args.fabric_id is not None else config.root_of_trust_index

    if args.chip_tool_credentials_path is not None and not args.chip_tool_credentials_path.exists():
        print("error: chip-tool credentials path %s doesn't exist!" % args.chip_tool_credentials_path)
        return False
    config.chip_tool_credentials_path = args.chip_tool_credentials_path

    if config.commissioning_method == "ble-wifi":
        if args.wifi_ssid is None:
            print("error: missing --wifi-ssid <SSID> for --commissioning-method ble-wifi!")
            return False

        if args.wifi_passphrase is None:
            print("error: missing --wifi-passphrase <passphrasse> for --commissioning-method ble-wifi!")
            return False

        config.wifi_ssid = args.wifi_ssid
        config.wifi_passphrase = args.wifi_passphrase
    elif config.commissioning_method == "ble-thread":
        if args.thread_dataset_hex is None:
            print("error: missing --thread-dataset-hex <DATASET_HEX> for --commissioning-method ble-thread!")
            return False
        config.thread_operational_dataset = args.thread_dataset_hex

    return True


def convert_args_to_matter_config(args: argparse.Namespace) -> MatterTestConfig:
    config = MatterTestConfig()

    # Populate commissioning config if present, exiting on error
    if not populate_commissioning_args(args, config):
        sys.exit(1)

    config.storage_path = pathlib.Path(_DEFAULT_STORAGE_PATH) if args.storage_path is None else args.storage_path
    config.logs_path = pathlib.Path(_DEFAULT_LOG_PATH) if args.logs_path is None else args.logs_path
    config.paa_trust_store_path = args.paa_trust_store_path

    config.controller_node_id = args.controller_node_id

    # Accumulate all command-line-passed named args
    all_global_args = []
    argsets = [item for item in (args.int_arg, args.float_arg, args.string_arg, args.json_arg,
                                 args.hex_arg, args.bool_arg) if item is not None]
    for argset in argsets:
        all_global_args.extend(argset)

    config.global_test_params = {}
    for name, value in all_global_args:
        config.global_test_params[name] = value

    # Embed the rest of the config in the global test params dict which will be passed to Mobly tests
    config.global_test_params["meta_config"] = {k: v for k, v in dataclass_asdict(config).items() if k != "global_test_params"}

    return config


def parse_matter_test_args(argv: list[str]) -> MatterTestConfig:
    parser = argparse.ArgumentParser(description='Matter standalone Python test')

    basic_group = parser.add_argument_group(title="Basic arguments", description="Overall test execution arguments")

    basic_group.add_argument('--tests',
                             '--test_case',
                             action="store",
                             nargs='+',
                             type=str,
                             metavar='test_a test_b...',
                             help='A list of tests in the test class to execute.')

    basic_group.add_argument('--storage-path', action="store", type=pathlib.Path,
                             metavar="PATH", help="Location for persisted storage of instance")
    basic_group.add_argument('--logs-path', action="store", type=pathlib.Path, metavar="PATH", help="Location for test logs")
    paa_path_default = get_default_paa_trust_store(pathlib.Path.cwd())
    basic_group.add_argument('--paa-trust-store-path', action="store", type=pathlib.Path, metavar="PATH", default=paa_path_default,
                             help="PAA trust store path (default: %s)" % str(paa_path_default))
    basic_group.add_argument('-N', '--controller-node-id', type=int_decimal_or_hex,
                             metavar='NODE_ID',
                             default=_DEFAULT_CONTROLLER_NODE_ID,
                             help='NodeID to use for initial/default controller (default: %d)' % _DEFAULT_CONTROLLER_NODE_ID)
    basic_group.add_argument('-n', '--dut-node-id', type=int_decimal_or_hex,
                             metavar='NODE_ID', default=_DEFAULT_DUT_NODE_ID,
                             help='Node ID for primary DUT communication, and NodeID to assign if commissioning (default: %d)' % _DEFAULT_DUT_NODE_ID)

    commission_group = parser.add_argument_group(title="Commissioning", description="Arguments to commission a node")

    commission_group.add_argument('-m', '--commissioning-method', type=str,
                                  metavar='METHOD_NAME',
                                  choices=["on-network", "ble-wifi", "ble-thread"],
                                  help='Name of commissioning method to use')
    commission_group.add_argument('-d', '--discriminator', type=int_decimal_or_hex,
                                  metavar='LONG_DISCRIMINATOR',
                                  help='Discriminator to use for commissioning')
    commission_group.add_argument('-p', '--passcode', type=int_decimal_or_hex,
                                  metavar='PASSCODE',
                                  help='PAKE passcode to use')

    commission_group.add_argument('--wifi-ssid', type=str,
                                  metavar='SSID',
                                  help='Wi-Fi SSID for ble-wifi commissioning')
    commission_group.add_argument('--wifi-passphrase', type=str,
                                  metavar='PASSPHRASE',
                                  help='Wi-Fi passphrase for ble-wifi commissioning')

    commission_group.add_argument('--thread-dataset-hex', type=byte_string_from_hex,
                                  metavar='OPERATIONAL_DATASET_HEX',
                                  help='Thread operational dataset as a hex string for ble-thread commissioning')

    commission_group.add_argument('--admin-vendor-id', action="store", type=int_decimal_or_hex, default=_DEFAULT_ADMIN_VENDOR_ID,
                                  metavar="VENDOR_ID", help="VendorID to use during commissioning (default 0x%04X)" % _DEFAULT_ADMIN_VENDOR_ID)

    code_group = parser.add_mutually_exclusive_group(required=False)

    code_group.add_argument('-q', '--qr-code', type=str,
                            metavar="QR_CODE", help="QR setup code content (overrides passcode and discriminator)")
    code_group.add_argument('--manual-code', type=int_from_manual_code,
                            metavar="MANUAL_CODE", help="Manual setup code content (overrides passcode and discriminator)")

    fabric_group = parser.add_argument_group(
        title="Fabric selection", description="Fabric selection for single-fabric basic usage, and commissioning")
    fabric_group.add_argument('-f', '--fabric-id', type=int_decimal_or_hex,
                              metavar='FABRIC_ID',
                              help='Fabric ID on which to operate under the root of trust')

    fabric_group.add_argument('-r', '--root-index', type=root_index,
                              metavar='ROOT_INDEX_OR_NAME', default=_DEFAULT_TRUST_ROOT_INDEX,
                              help='Root of trust under which to operate/commission for single-fabric basic usage. alpha/beta/gamma are aliases for 1/2/3. Default (%d)' % _DEFAULT_TRUST_ROOT_INDEX)

    fabric_group.add_argument('-c', '--chip-tool-credentials-path', type=pathlib.Path,
                              metavar='PATH',
                              help='Path to chip-tool credentials file root')

    args_group = parser.add_argument_group(title="Config arguments", description="Test configuration global arguments set")
    args_group.add_argument('--int-arg', nargs='*', type=int_named_arg, metavar="NAME:VALUE",
                            help="Add a named test argument for an integer as hex or decimal (e.g. -2 or 0xFFFF_1234)")
    args_group.add_argument('--bool-arg', nargs='*', type=bool_named_arg, metavar="NAME:VALUE",
                            help="Add a named test argument for an boolean value (e.g. true/false or 0/1)")
    args_group.add_argument('--float-arg', nargs='*', type=float_named_arg, metavar="NAME:VALUE",
                            help="Add a named test argument for a floating point value (e.g. -2.1 or 6.022e23)")
    args_group.add_argument('--string-arg', nargs='*', type=str_named_arg, metavar="NAME:VALUE",
                            help="Add a named test argument for a string value")
    args_group.add_argument('--json-arg', nargs='*', type=json_named_arg, metavar="NAME:VALUE",
                            help="Add a named test argument for JSON stored as a list or dict")
    args_group.add_argument('--hex-arg', nargs='*', type=bytes_as_hex_named_arg, metavar="NAME:VALUE",
                            help="Add a named test argument for an octet string in hex (e.g. 0011cafe or 00:11:CA:FE)")

    if not argv:
        argv = sys.argv[1:]

    return convert_args_to_matter_config(parser.parse_known_args(argv)[0])


def async_test_body(body):
    """Decorator required to be applied whenever a `test_*` method is `async def`.

    Since Mobly doesn't support asyncio directly, and the test methods are called
    synchronously, we need a mechanism to allow an `async def` to be converted to
    a asyncio-run synchronous method. This decorator does the wrapping.
    """
    def async_runner(*args, **kwargs):
        return asyncio.run(body(*args, **kwargs))

    return async_runner


class CommissionDeviceTest(MatterBaseTest):
    """Test class auto-injected at the start of test list to commission a device when requested"""

    def test_run_commissioning(self):
        conf = self.matter_test_config
        logging.info("Starting commissioning for root index %d, fabric ID 0x%016X, node ID 0x%016X" %
                     (conf.root_of_trust_index, conf.fabric_id, conf.dut_node_id))
        logging.info("Commissioning method: %s" % conf.commissioning_method)

        if not self._commission_device():
            raise signals.TestAbortAll("Failed to commission node")

    def _commission_device(self) -> bool:
        dev_ctrl = self.default_controller
        conf = self.matter_test_config

        # TODO: support by manual code and QR

        if conf.commissioning_method == "on-network":
            return dev_ctrl.CommissionOnNetwork(nodeId=conf.dut_node_id, setupPinCode=conf.setup_passcode, filterType=DiscoveryFilterType.LONG_DISCRIMINATOR, filter=conf.discriminator)
        elif conf.commissioning_method == "ble-wifi":
            return dev_ctrl.CommissionWiFi(conf.discriminator, conf.setup_passcode, conf.dut_node_id, conf.wifi_ssid, conf.wifi_passphrase)
        elif conf.commissioning_method == "ble-thread":
            return dev_ctrl.CommissionThread(conf.discriminator, conf.setup_passcode, conf.dut_node_id, conf.thread_operational_dataset)
        else:
            raise ValueError("Invalid commissioning method %s!" % conf.commissioning_method)


def default_matter_test_main(argv=None):
    """Execute the test class in a test module.
    This is the default entry point for running a test script file directly.
    In this case, only one test class in a test script is allowed.
    To make your test script executable, add the following to your file:
    .. code-block:: python
      from matter_testing_support.py import default_matter_test_main
      ...
      if __name__ == '__main__':
        default_matter_test_main.main()
    Args:
      argv: A list that is then parsed as command line args. If None, defaults to sys.argv
    """
    matter_test_config = parse_matter_test_args(argv)

    # Find the test class in the test script.
    test_class = _find_test_class()

    # Load test config file.
    test_config = generate_mobly_test_config(matter_test_config)

    # Parse test specifiers if exist.
    tests = None
    if len(matter_test_config.tests) > 0:
        tests = matter_test_config.tests

    stack = MatterStackState(matter_test_config)
    test_config.user_params["matter_stack"] = stash_globally(stack)

    # TODO: Steer to right FabricAdmin!
    default_controller = stack.fabric_admins[0].NewController(nodeId=matter_test_config.controller_node_id,
                                                              paaTrustStorePath=str(matter_test_config.paa_trust_store_path))
    test_config.user_params["default_controller"] = stash_globally(default_controller)

    test_config.user_params["matter_test_config"] = stash_globally(matter_test_config)

    # Execute the test class with the config
    ok = True

    runner = TestRunner(log_dir=test_config.log_path,
                        testbed_name=test_config.testbed_name)

    with runner.mobly_logger():
        if matter_test_config.commissioning_method is not None:
            runner.add_test_class(test_config, CommissionDeviceTest, None)

        runner.add_test_class(test_config, test_class, tests)
        try:
            runner.run()
            ok = runner.results.is_all_pass and ok
        except signals.TestAbortAll:
            ok = False
        except Exception:
            logging.exception('Exception when executing %s.', test_config.testbed_name)
            ok = False

    # Shutdown the stack when all done
    stack.Shutdown()

    if ok:
        logging.info("Final result: PASS !")
    else:
        logging.error("Final result: FAIL !")
        sys.exit(1)