# Copyright (c) 2019 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.

from unittest.mock import patch, MagicMock
import pytest
from UM.Settings.DefinitionContainer import DefinitionContainer
from cura.Machines.ContainerTree import ContainerTree
from cura.Settings.GlobalStack import GlobalStack


def createMockedStack(definition_id: str):
    result = MagicMock(spec = GlobalStack)
    result.definition.getId = MagicMock(return_value = definition_id)

    extruder_left_mock = MagicMock()
    extruder_left_mock.variant.getName = MagicMock(return_value = definition_id + "_left_variant_name")
    extruder_left_mock.material.getMetaDataEntry = MagicMock(return_value = definition_id + "_left_material_base_file")
    extruder_left_mock.isEnabled = True
    extruder_right_mock = MagicMock()
    extruder_right_mock.variant.getName = MagicMock(return_value = definition_id + "_right_variant_name")
    extruder_right_mock.material.getMetaDataEntry = MagicMock(return_value = definition_id + "_right_material_base_file")
    extruder_right_mock.isEnabled = True
    extruder_list = [extruder_left_mock, extruder_right_mock]
    result.extruderList = extruder_list
    return result


@pytest.fixture
def container_registry():
    result = MagicMock()
    result.findContainerStacks = MagicMock(return_value = [createMockedStack("machine_1"), createMockedStack("machine_2")])
    return result

@pytest.fixture
def application():
    return MagicMock(getGlobalContainerStack = MagicMock(return_value = createMockedStack("current_global_stack")))


def test_containerTreeInit(container_registry):
    with patch("UM.Settings.ContainerRegistry.ContainerRegistry.getInstance", MagicMock(return_value=container_registry)):
        container_tree = ContainerTree()

    assert "machine_1" in container_tree.machines
    assert "machine_2" in container_tree.machines


def test_newMachineAdded(container_registry):
    mocked_definition_container = MagicMock(spec=DefinitionContainer)
    mocked_definition_container.getId = MagicMock(return_value = "machine_3")

    with patch("UM.Settings.ContainerRegistry.ContainerRegistry.getInstance", MagicMock(return_value = container_registry)):
        container_tree = ContainerTree()
        # machine_3 shouldn't be there, as on init it wasn't in the registry
        assert "machine_3" not in container_tree.machines

        # It should only react when a globalStack is added.
        container_tree._machineAdded(mocked_definition_container)
        assert "machine_3" not in container_tree.machines

        container_tree._machineAdded(createMockedStack("machine_3"))
        assert "machine_3" in container_tree.machines


def test_alreadyKnownMachineAdded(container_registry):
    mocked_definition_container = MagicMock(spec = DefinitionContainer)
    mocked_definition_container.getId = MagicMock(return_value = "machine_2")

    with patch("UM.Settings.ContainerRegistry.ContainerRegistry.getInstance", MagicMock(return_value = container_registry)):
        container_tree = ContainerTree()
        assert len(container_tree.machines) == 2

        # The ID is already there, so no machine should be added.
        container_tree._machineAdded(mocked_definition_container)
        assert len(container_tree.machines) == 2

def test_getCurrentQualityGroupsNoGlobalStack(container_registry):
    with patch("UM.Settings.ContainerRegistry.ContainerRegistry.getInstance", MagicMock(return_value = container_registry)):
        with patch("cura.CuraApplication.CuraApplication.getInstance", MagicMock(return_value = MagicMock(getGlobalContainerStack = MagicMock(return_value = None)))):
            container_tree = ContainerTree()
            result = container_tree.getCurrentQualityGroups()

    assert len(result) == 0

def test_getCurrentQualityGroups(container_registry, application):
    with patch("UM.Settings.ContainerRegistry.ContainerRegistry.getInstance", MagicMock(return_value = container_registry)):
        container_tree = ContainerTree()
        container_tree.machines["current_global_stack"] = MagicMock()  # Mock so that we can track whether the getQualityGroups function gets called with correct parameters.

        with patch("cura.CuraApplication.CuraApplication.getInstance", MagicMock(return_value = application)):
            result = container_tree.getCurrentQualityGroups()

    # As defined in the fixture for application.
    expected_variant_names = ["current_global_stack_left_variant_name", "current_global_stack_right_variant_name"]
    expected_material_base_files = ["current_global_stack_left_material_base_file", "current_global_stack_right_material_base_file"]
    expected_is_enabled = [True, True]

    container_tree.machines["current_global_stack"].getQualityGroups.assert_called_with(expected_variant_names, expected_material_base_files, expected_is_enabled)
    assert result == container_tree.machines["current_global_stack"].getQualityGroups.return_value

def test_getCurrentQualityChangesGroupsNoGlobalStack(container_registry):
    with patch("UM.Settings.ContainerRegistry.ContainerRegistry.getInstance", MagicMock(return_value = container_registry)):
        with patch("cura.CuraApplication.CuraApplication.getInstance", MagicMock(return_value = MagicMock(getGlobalContainerStack = MagicMock(return_value = None)))):
            container_tree = ContainerTree()
            result = container_tree.getCurrentQualityChangesGroups()

    assert len(result) == 0

def test_getCurrentQualityChangesGroups(container_registry, application):
    with patch("UM.Settings.ContainerRegistry.ContainerRegistry.getInstance", MagicMock(return_value = container_registry)):
        container_tree = ContainerTree()
        container_tree.machines["current_global_stack"] = MagicMock()  # Mock so that we can track whether the getQualityGroups function gets called with correct parameters.

        with patch("cura.CuraApplication.CuraApplication.getInstance", MagicMock(return_value = application)):
            result = container_tree.getCurrentQualityChangesGroups()

    # As defined in the fixture for application.
    expected_variant_names = ["current_global_stack_left_variant_name", "current_global_stack_right_variant_name"]
    expected_material_base_files = ["current_global_stack_left_material_base_file", "current_global_stack_right_material_base_file"]
    expected_is_enabled = [True, True]

    container_tree.machines["current_global_stack"].getQualityChangesGroups.assert_called_with(expected_variant_names, expected_material_base_files, expected_is_enabled)
    assert result == container_tree.machines["current_global_stack"].getQualityChangesGroups.return_value