# pylint: skip-file
import threading
from typing import Generator
from unittest import mock

import ophyd
import pytest
from bec_server.scan_server.scan_worker import ScanWorker
from ophyd.status import WaitTimeoutError
from ophyd_devices.interfaces.base_classes.psi_device_base import DeviceStoppedError
from ophyd_devices.tests.utils import MockPV

# from bec_server.device_server.tests.utils import DMMock
from debye_bec.devices.nidaq.nidaq import Nidaq, NidaqError

# TODO move this function to ophyd_devices, it is duplicated in csaxs_bec and needed for other pluging repositories
from debye_bec.devices.test_utils.utils import patch_dual_pvs


@pytest.fixture(scope="function")
def scan_worker_mock(scan_server_mock):
    """Scan worker fixture, utility to generate scan_info for a given scan name."""
    scan_server_mock.device_manager.connector = mock.MagicMock()
    scan_worker = ScanWorker(parent=scan_server_mock)
    yield scan_worker


@pytest.fixture(scope="function")
def mock_nidaq() -> Generator[Nidaq, None, None]:
    """Fixture for the Nidaq device."""
    name = "nidaq"
    prefix = "nidaq:prefix_test:"
    with mock.patch.object(ophyd, "cl") as mock_cl:
        mock_cl.get_pv = MockPV
        mock_cl.thread_class = threading.Thread
        dev = Nidaq(name=name, prefix=prefix)
        patch_dual_pvs(dev)
        yield dev


def test_init(mock_nidaq):
    """Test the initialization of the Nidaq device."""
    dev = mock_nidaq
    assert dev.name == "nidaq"
    assert dev.prefix == "nidaq:prefix_test:"
    assert dev.valid_scan_names == [
        "xas_simple_scan",
        "xas_simple_scan_with_xrd",
        "xas_advanced_scan",
        "xas_advanced_scan_with_xrd",
        "nidaq_continuous_scan",
    ]


def test_check_if_scan_name_is_valid(mock_nidaq):
    """Test the check_if_scan_name_is_valid method."""
    dev = mock_nidaq
    dev.scan_info.msg.scan_name = "xas_simple_scan"
    assert dev._check_if_scan_name_is_valid()
    dev.scan_info.msg.scan_name = "invalid_scan_name"
    assert not dev._check_if_scan_name_is_valid()


def test_set_config(mock_nidaq):
    dev = mock_nidaq
    # TODO #21 Add test logic for set_config, issue created #


def test_on_connected(mock_nidaq):
    """Test the on_connected method of the Nidaq device."""
    dev = mock_nidaq
    dev.power.put(0)
    dev.heartbeat._read_pv.mock_data = 0
    # First scenario, raise timeout error

    # This will raise a WaitTimeoutError error as we currently do not support callbacks in the MockPV
    dev.timeout_wait_for_signal = 0.1
    # To check that it raised, we check that dev.power PV is set to 1
    # Set state PV to 0, 1 is expected value
    dev.state._read_pv.mock_data = 0
    with pytest.raises(WaitTimeoutError):
        dev.on_connected()
        assert dev.power.get() == 1
    # TODO, once the MOCKPv supports callbacks, we can test the rest of the logic issue #22


# def test_on_stage(mock_nidaq):
#     dev = mock_nidaq
#     #TODO Add once MockPV supports callbacks #22


def test_on_kickoff(mock_nidaq):
    """Test the on_kickoff method of the Nidaq device."""
    dev = mock_nidaq
    dev.kickoff_call.put(0)
    dev.kickoff()
    assert dev.kickoff_call.get() == 1


def test_on_unstage(mock_nidaq):
    """Test the on_unstage method of the Nidaq device."""
    dev = mock_nidaq
    dev.state._read_pv.mock_data = 0  # Set state to 0, 1 is Standby
    dev._timeout_wait_for_pv = 0.1  # Set a short timeout for testing
    dev.enable_compression._read_pv.mock_data = 0  # Compression enabled
    with pytest.raises(WaitTimeoutError):
        dev.on_unstage()
    dev.state._read_pv.mock_data = 1
    # FIXME #22 add callback mechanism to MockPV to test the rest of the logic
    # dev.on_unstage()
    # assert dev.enable_compression.get() == 1


@pytest.mark.parametrize(
    ["scan_name", "raise_error", "nidaq_state"],
    [
        ("line_scan", False, 0),
        ("xas_simple_scan", False, 3),
        ("xas_simple_scan", True, 0),
        ("nidaq_continuous_scan", False, 0),
    ],
)
def test_on_pre_scan(mock_nidaq, scan_name, raise_error, nidaq_state):
    """Test the on_pre_scan method of the Nidaq device."""
    dev = mock_nidaq
    dev.state.put(nidaq_state)
    dev.scan_info.msg.scan_name = scan_name
    dev._timeout_wait_for_pv = 0.1  # Set a short timeout for testing
    if not raise_error:
        dev.pre_scan()
    else:
        with pytest.raises(WaitTimeoutError):
            dev.pre_scan()


def test_on_complete(mock_nidaq):
    """Test the on_complete method of the Nidaq device."""
    dev = mock_nidaq
    # Check for nidaq_continuous_scan
    dev.scan_info.msg.scan_name = "nidaq_continuous_scan"
    dev.state.put(0)  # Set state to DISABLED
    status = dev.complete()
    assert status.done is False
    dev.state.put(1)
    # Should resolve now
    status.wait(timeout=5)  # Wait for the status to complete
    assert status.done is True

    # Check for XAS simple scan
    dev.scan_info.msg.scan_name = "xas_simple_scan"
    dev.state.put(0)  # Set state to ACQUIRE
    dev.stop_call.put(0)
    dev._timeout_wait_for_pv = 5
    status = dev.on_complete()
    assert status.done is False
    assert dev.stop_call.get() == 1  # Should have called stop
    dev.state.put(1)  # Set state to STANDBY
    # Should resolve now
    status.wait(timeout=5)  # Wait for the status to complete
    assert status.done is True

    # Test that it resolves if device is stopped
    dev.state.put(0)  # Set state to DISABLED
    dev.stop()
    status.wait(timeout=5)
    assert status.done is True