"""
Unit test module for kumolocal.py local network detection functionality.

This test module focuses on testing the local network detection logic
without requiring actual kumolocal devices.
"""

# built-in imports
import copy
import logging
import unittest

# local imports
from thermostatsupervisor import kumolocal
from thermostatsupervisor import kumolocal_config
from tests import unit_test_common as utc


class LocalNetworkDetectionUnitTest(utc.UnitTest):
    """
    Unit tests for local network detection functionality.
    """

    def setUp(self):
        """Setup for unit tests."""
        super().setUp()
        self.print_test_name()

        # Reset metadata to initial state
        self.original_metadata = copy.deepcopy(kumolocal_config.metadata)

    def tearDown(self):
        """Cleanup after unit tests."""
        # Restore original metadata
        kumolocal_config.metadata.clear()
        kumolocal_config.metadata.update(self.original_metadata)
        super().tearDown()

    def test_metadata_has_local_net_available_field(self):
        """Test that metadata includes local_net_available field."""
        for zone_id in kumolocal_config.metadata:
            self.assertIn("local_net_available", kumolocal_config.metadata[zone_id])
            # Should be None initially
            self.assertIsNone(kumolocal_config.metadata[zone_id]["local_net_available"])

    def test_local_network_detection_method_signature(self):
        """Test that detect_local_network_availability method can be called."""
        # This is a simple test to verify the method signature exists
        # without requiring pykumo or actual network detection

        # Create a mock thermostat class to test the method exists
        class MockThermostat:
            """
            Mock class for simulating a Thermostat object in unit tests.
            Attributes:
                verbose (bool): Flag to enable verbose output.
            Methods:
                detect_local_network_availability():
                    Mock implementation for testing local network availability
                    detection.
            """

            def __init__(self):
                self.verbose = False

            def detect_local_network_availability(self):
                """Mock implementation for testing."""
                # Just verify we can call this method
                pass

        mock_thermostat = MockThermostat()

        # Test method exists and can be called
        try:
            mock_thermostat.detect_local_network_availability()
        except Exception as e:
            self.fail(f"detect_local_network_availability method failed: {e}")

    def test_is_local_network_available_method_signature(self):
        """Test that is_local_network_available method has correct signature."""
        # This tests the method signature without requiring actual kumolocal
        try:
            # Create a mock thermostat class to test the method exists
            class MockThermostat:
                """
                MockThermostat is a mock class used for testing thermostat
                functionality.
                Attributes:
                    zone_number (int): The zone number associated with the thermostat.
                Methods:
                    is_local_network_available(zone=None):
                        Checks if the local network is available for the specified zone.
                        If no zone is provided, uses the instance's zone_number.
                        Returns True if the local network is available, False otherwise.
                """

                def __init__(self):
                    self.zone_number = 0

                def is_local_network_available(self, zone=None):
                    """Mock implementation for testing."""
                    zone_number = zone if zone is not None else self.zone_number
                    if zone_number in kumolocal_config.metadata:
                        value = kumolocal_config.metadata[zone_number].get(
                            "local_net_available", False
                        )
                        # Handle case where value is None (not yet detected)
                        return value if value is not None else False
                    return False

            mock_thermostat = MockThermostat()

            # Test method exists and returns expected type
            result = mock_thermostat.is_local_network_available()
            self.assertIsInstance(result, bool)
            self.assertFalse(result)  # Should be False for None value

        except ImportError:
            self.skipTest("kumolocal module not available for testing")

    def test_pykumo_logging_integration(self):
        """Test that pykumo logging integration can be initialized."""
        try:
            # Mock the utilities module to capture log messages
            captured_logs = []

            class MockUtil:
                """
                MockUtil is a mock utility class for logging messages during testing.
                Attributes:
                    DATA_LOG (int): Constant representing data log mode.
                    STDERR_LOG (int): Constant representing standard error log mode.
                    DEBUG_LOG (int): Constant representing debug log mode.
                Methods:
                    log_msg(msg, mode, func_name=None, file_name=None):
                            func_name (str, optional): Name of the function where the
                                                     log originated. Defaults to None.
                            file_name (str, optional): Name of the file where the log
                                                       originated. Defaults to None.
                """

                DATA_LOG = 1
                STDERR_LOG = 2
                DEBUG_LOG = 4

                @staticmethod
                def log_msg(msg, mode, func_name=None, file_name=None):
                    """
                    Logs a message with additional context information.

                    Appends a dictionary containing the message, mode, function name,
                    and file name to the captured_logs list.

                    Args:
                        msg (str): The log message to record.
                        mode (str): The logging mode or level (e.g., 'info', 'error').
                        func_name (str, optional): Name of the function where the log
                                                   originated. Defaults to None.
                        file_name (str, optional): Name of the file where the log
                                                   originated. Defaults to None.
                    """
                    captured_logs.append(
                        {
                            "msg": msg,
                            "mode": mode,
                            "func_name": func_name,
                            "file_name": file_name,
                        }
                    )

            # Temporarily replace util module
            original_util = kumolocal.util
            kumolocal.util = MockUtil

            try:
                # Test that we can create the SupervisorLogHandler
                handler = kumolocal.SupervisorLogHandler()
                self.assertIsInstance(handler, logging.Handler)

                # Test logging with the handler
                record = logging.LogRecord(
                    name="test",
                    level=logging.INFO,
                    pathname="",
                    lineno=0,
                    msg="Test message",
                    args=(),
                    exc_info=None,
                )
                handler.emit(record)

                # Verify that a log message was captured
                self.assertTrue(len(captured_logs) > 0)
                self.assertIn("[pykumo]", captured_logs[0]["msg"])
                self.assertEqual("kumo_log.txt", captured_logs[0]["file_name"])

            finally:
                # Restore original util module
                kumolocal.util = original_util

        except ImportError:
            self.skipTest("kumolocal module not available for testing")


if __name__ == "__main__":
    unittest.main(verbosity=2)
