"""
Unit tests for GUI component functionality.

These tests focus on pure logic and data validation without requiring
full GUI setup, tkinter dependencies, or complex integrations.
"""

import pytest
import json


@pytest.mark.unit
class TestGUIImports:
    """Test that GUI modules can be imported."""

    def test_gui_module_imports(self):
        """Test importing GUI modules."""
        try:
            from hbat.gui.main_window import MainWindow  # noqa: F401
            from hbat.gui.geometry_cutoffs_dialog import GeometryCutoffsDialog  # noqa: F401
            from hbat.gui.pdb_fixing_dialog import PDBFixingDialog  # noqa: F401
            from hbat.gui.preset_manager_dialog import PresetManagerDialog  # noqa: F401
            from hbat.gui.results_panel import ResultsPanel  # noqa: F401

            assert True, "GUI modules imported successfully"
        except ImportError as e:
            pytest.skip(f"GUI modules not available: {e}")

    def test_chain_visualization_import(self):
        """Test importing chain visualization module."""
        try:
            from hbat.gui.chain_visualization_window import ChainVisualizationWindow

            assert ChainVisualizationWindow is not None
        except ImportError as e:
            pytest.skip(f"Chain visualization not available: {e}")

    def test_renderer_imports(self):
        """Test importing visualization renderers."""
        try:
            from hbat.gui.graphviz_renderer import GraphVizRenderer
            from hbat.gui.matplotlib_renderer import MatplotlibRenderer

            assert GraphVizRenderer is not None
            assert MatplotlibRenderer is not None
        except ImportError as e:
            pytest.skip(f"Renderer modules not available: {e}")


@pytest.mark.unit
class TestDialogLogic:
    """Test dialog logic without GUI components."""

    def test_analysis_parameters_integration(self):
        """Test that analysis parameters work with dialog architecture."""
        try:
            from hbat.constants.parameters import AnalysisParameters

            # Test creating parameters that would be used by dialogs
            params = AnalysisParameters(
                hb_distance_cutoff=3.2,
                hb_angle_cutoff=125.0,
                whb_distance_cutoff=3.8,
                whb_angle_cutoff=145.0,
                whb_donor_acceptor_cutoff=3.6,
                fix_pdb_enabled=True,
                fix_pdb_method="pdbfixer",
            )

            # Verify parameters have expected attributes
            assert params.hb_distance_cutoff == 3.2
            assert params.hb_angle_cutoff == 125.0
            assert params.whb_distance_cutoff == 3.8
            assert params.whb_angle_cutoff == 145.0
            assert params.whb_donor_acceptor_cutoff == 3.6
            assert params.fix_pdb_enabled is True
            assert params.fix_pdb_method == "pdbfixer"

        except ImportError as e:
            pytest.skip(f"Analysis parameters not available: {e}")

    def test_preset_data_structure(self):
        """Test preset data structure for dialog compatibility."""
        # Test preset data format that would be used by PresetManagerDialog
        preset_data = {
            "format_version": "1.0",
            "parameters": {
                "hydrogen_bonds": {
                    "h_a_distance_cutoff": 3.5,
                    "dha_angle_cutoff": 120.0,
                    "d_a_distance_cutoff": 4.0,
                },
                "weak_hydrogen_bonds": {
                    "h_a_distance_cutoff": 3.6,
                    "dha_angle_cutoff": 150.0,
                    "d_a_distance_cutoff": 3.5,
                },
                "halogen_bonds": {
                    "x_a_distance_cutoff": 4.0,
                    "dxa_angle_cutoff": 120.0,
                },
                "pi_interactions": {
                    "h_pi_distance_cutoff": 4.5,
                    "dh_pi_angle_cutoff": 90.0,
                },
                "general": {
                    "covalent_cutoff_factor": 0.85,
                    "analysis_mode": "complete",
                },
                "pdb_fixing": {
                    "enabled": False,
                    "method": "openbabel",
                    "add_hydrogens": True,
                    "add_heavy_atoms": False,
                    "replace_nonstandard": False,
                    "remove_heterogens": False,
                    "keep_water": True,
                },
            },
        }

        # Verify preset structure
        assert "format_version" in preset_data
        assert "parameters" in preset_data
        assert "hydrogen_bonds" in preset_data["parameters"]
        assert "pdb_fixing" in preset_data["parameters"]

        # Test JSON serialization (important for preset saving)
        json_string = json.dumps(preset_data)
        loaded_data = json.loads(json_string)
        assert loaded_data == preset_data


@pytest.mark.unit
class TestParameterValidation:
    """Test parameter validation logic."""

    def test_parameter_ranges(self):
        """Test parameter range validation."""
        try:
            from hbat.core.analysis import AnalysisParameters

            # Test valid parameters
            valid_params = AnalysisParameters(
                hb_distance_cutoff=3.5,
                hb_angle_cutoff=120.0,
                hb_donor_acceptor_cutoff=4.0,
            )

            assert valid_params.hb_distance_cutoff == 3.5
            assert valid_params.hb_angle_cutoff == 120.0
            assert valid_params.hb_donor_acceptor_cutoff == 4.0

        except ImportError as e:
            pytest.skip(f"Analysis parameters not available: {e}")

    def test_pdb_fixing_parameters(self):
        """Test PDB fixing parameter validation."""
        try:
            from hbat.core.analysis import AnalysisParameters

            # Test PDB fixing parameters
            pdb_params = AnalysisParameters(
                fix_pdb_enabled=True,
                fix_pdb_method="pdbfixer",
                fix_pdb_add_hydrogens=True,
                fix_pdb_add_heavy_atoms=True,
                fix_pdb_replace_nonstandard=False,
            )

            assert pdb_params.fix_pdb_enabled is True
            assert pdb_params.fix_pdb_method == "pdbfixer"
            assert pdb_params.fix_pdb_add_hydrogens is True
            assert pdb_params.fix_pdb_add_heavy_atoms is True
            assert pdb_params.fix_pdb_replace_nonstandard is False

        except ImportError as e:
            pytest.skip(f"Analysis parameters not available: {e}")


@pytest.mark.unit
class TestConfigIntegration:
    """Test configuration integration with GUI components."""

    def test_app_config_import(self):
        """Test that app config can be imported."""
        try:
            from hbat.core.app_config import HBATConfig

            config = HBATConfig()
            assert config is not None

        except ImportError as e:
            pytest.skip(f"App config not available: {e}")

    def test_parameter_defaults(self):
        """Test parameter defaults integration."""
        try:
            from hbat.constants.parameters import ParametersDefault

            # Test that defaults exist for dialog use
            assert hasattr(ParametersDefault, "HB_DISTANCE_CUTOFF")
            assert hasattr(ParametersDefault, "HB_ANGLE_CUTOFF")
            assert hasattr(ParametersDefault, "ANALYSIS_MODE")

        except ImportError as e:
            pytest.skip(f"Parameter constants not available: {e}")


@pytest.mark.unit
class TestAnalysisIntegration:
    """Test analysis component integration."""

    def test_analyzer_import(self):
        """Test that analyzer can be imported."""
        try:
            from hbat.core.analysis import NPMolecularInteractionAnalyzer

            assert NPMolecularInteractionAnalyzer is not None

        except ImportError as e:
            pytest.skip(f"Analyzer not available: {e}")

    def test_analyzer_parameter_integration(self):
        """Test analyzer works with GUI parameters."""
        try:
            from hbat.core.analysis import (
                AnalysisParameters,
                NPMolecularInteractionAnalyzer,
            )

            # Test creating analyzer with GUI parameters
            params = AnalysisParameters(
                hb_distance_cutoff=3.2, analysis_mode="complete"
            )

            analyzer = NPMolecularInteractionAnalyzer(params)
            assert analyzer is not None

        except ImportError as e:
            pytest.skip(f"Analysis components not available: {e}")


@pytest.mark.unit
class TestDialogDataStructures:
    """Test data structures used by dialogs."""

    def test_geometry_parameters_structure(self):
        """Test geometry parameters data structure."""
        try:
            from hbat.core.analysis import AnalysisParameters

            # Test parameters used by GeometryCutoffsDialog
            geo_params = AnalysisParameters(
                hb_distance_cutoff=3.5,
                hb_angle_cutoff=120.0,
                hb_donor_acceptor_cutoff=4.0,
                xb_distance_cutoff=4.0,
                xb_angle_cutoff=120.0,
                pi_distance_cutoff=4.5,
                pi_angle_cutoff=90.0,
                analysis_mode="complete",
            )

            # Verify all geometry parameters exist
            assert hasattr(geo_params, "hb_distance_cutoff")
            assert hasattr(geo_params, "hb_angle_cutoff")
            assert hasattr(geo_params, "hb_donor_acceptor_cutoff")
            assert hasattr(geo_params, "analysis_mode")

        except ImportError as e:
            pytest.skip(f"Geometry parameters not available: {e}")

    def test_pdb_fixing_structure(self):
        """Test PDB fixing parameters structure."""
        try:
            from hbat.core.analysis import AnalysisParameters

            # Test parameters used by PDBFixingDialog
            pdb_params = AnalysisParameters(
                fix_pdb_enabled=True,
                fix_pdb_method="pdbfixer",
                fix_pdb_add_hydrogens=True,
                fix_pdb_add_heavy_atoms=True,
                fix_pdb_replace_nonstandard=False,
                fix_pdb_remove_heterogens=False,
                fix_pdb_keep_water=True,
            )

            # Verify all PDB fixing parameters exist
            assert hasattr(pdb_params, "fix_pdb_enabled")
            assert hasattr(pdb_params, "fix_pdb_method")
            assert hasattr(pdb_params, "fix_pdb_add_hydrogens")
            assert hasattr(pdb_params, "fix_pdb_add_heavy_atoms")

        except ImportError as e:
            pytest.skip(f"PDB fixing parameters not available: {e}")


@pytest.mark.unit
class TestGeometryCutoffsDialogLogic:
    """Test GeometryCutoffsDialog parameter storage logic without GUI."""

    def test_parameter_storage_initialization(self):
        """Test parameter storage is properly initialized."""
        try:
            from hbat.gui.geometry_cutoffs_dialog import GeometryCutoffsDialog  # noqa: F401
            from hbat.constants.parameters import AnalysisParameters, ParametersDefault  # noqa: F401
            import tkinter as tk  # noqa: F401

            # Create minimal mock for testing logic
            class MockDialog:
                def __init__(self):
                    self.current_params = AnalysisParameters()
                    self._param_values = {}

                def _store_current_values(self):
                    """Mock version of store current values."""
                    self._param_values.update(
                        {
                            "hb_distance": 3.5,
                            "hb_angle": 120.0,
                            "xb_distance": 4.0,
                            "pi_distance": 4.5,
                        }
                    )

            mock_dialog = MockDialog()
            mock_dialog._store_current_values()

            # Test parameter storage works
            assert "hb_distance" in mock_dialog._param_values
            assert mock_dialog._param_values["hb_distance"] == 3.5
            assert mock_dialog._param_values["hb_angle"] == 120.0

        except ImportError as e:
            pytest.skip(f"GeometryCutoffsDialog not available: {e}")

    def test_parameter_get_value_logic(self):
        """Test parameter retrieval logic with fallbacks."""
        try:
            from hbat.constants.parameters import ParametersDefault

            # Mock the get_value logic from get_parameters method
            def get_value(param_values, var_name, default_value):
                if var_name in param_values:
                    return param_values[var_name]
                return default_value

            param_values = {"hb_distance": 3.2, "hb_angle": 125.0}

            # Test stored values are returned
            assert (
                get_value(
                    param_values, "hb_distance", ParametersDefault.HB_DISTANCE_CUTOFF
                )
                == 3.2
            )
            assert (
                get_value(param_values, "hb_angle", ParametersDefault.HB_ANGLE_CUTOFF)
                == 125.0
            )

            # Test default values are returned when not stored
            assert (
                get_value(
                    param_values, "xb_distance", ParametersDefault.XB_DISTANCE_CUTOFF
                )
                == ParametersDefault.XB_DISTANCE_CUTOFF
            )

        except ImportError as e:
            pytest.skip(f"Parameter constants not available: {e}")

    def test_parameter_set_logic(self):
        """Test parameter setting logic stores values correctly."""
        try:
            from hbat.constants.parameters import AnalysisParameters

            # Mock the parameter setting logic
            class MockParameterSetter:
                def __init__(self):
                    self._param_values = {}

                def set_parameters(self, params):
                    """Mock version of set_parameters logic."""
                    self._param_values.update(
                        {
                            "hb_distance": params.hb_distance_cutoff,
                            "hb_angle": params.hb_angle_cutoff,
                            "da_distance": params.hb_donor_acceptor_cutoff,
                            "whb_distance": params.whb_distance_cutoff,
                            "whb_angle": params.whb_angle_cutoff,
                            "whb_da_distance": params.whb_donor_acceptor_cutoff,
                            "analysis_mode": params.analysis_mode,
                        }
                    )

            setter = MockParameterSetter()
            test_params = AnalysisParameters(
                hb_distance_cutoff=3.2,
                hb_angle_cutoff=125.0,
                whb_distance_cutoff=3.8,
                analysis_mode="local",
            )

            setter.set_parameters(test_params)

            # Verify all parameters were stored
            assert setter._param_values["hb_distance"] == 3.2
            assert setter._param_values["hb_angle"] == 125.0
            assert setter._param_values["whb_distance"] == 3.8
            assert setter._param_values["analysis_mode"] == "local"

        except ImportError as e:
            pytest.skip(f"AnalysisParameters not available: {e}")

    def test_pi_interaction_subtype_storage(self):
        """Test π interaction subtype parameters are handled correctly."""
        try:
            from hbat.constants.parameters import AnalysisParameters, ParametersDefault  # noqa: F401

            # Test π interaction subtype parameter storage
            param_values = {}

            # Mock storing π subtype parameters
            pi_subtypes = {
                "pi_ccl_distance": ParametersDefault.PI_CCL_DISTANCE_CUTOFF,
                "pi_ccl_angle": ParametersDefault.PI_CCL_ANGLE_CUTOFF,
                "pi_cbr_distance": ParametersDefault.PI_CBR_DISTANCE_CUTOFF,
                "pi_cbr_angle": ParametersDefault.PI_CBR_ANGLE_CUTOFF,
                "pi_ch_distance": ParametersDefault.PI_CH_DISTANCE_CUTOFF,
                "pi_ch_angle": ParametersDefault.PI_CH_ANGLE_CUTOFF,
            }

            param_values.update(pi_subtypes)

            # Verify all π subtype parameters are stored
            assert "pi_ccl_distance" in param_values
            assert "pi_ccl_angle" in param_values
            assert "pi_cbr_distance" in param_values
            assert "pi_ch_distance" in param_values
            assert (
                param_values["pi_ccl_distance"]
                == ParametersDefault.PI_CCL_DISTANCE_CUTOFF
            )

        except ImportError as e:
            pytest.skip(f"Parameter constants not available: {e}")

    def test_parameter_persistence_workflow(self):
        """Test complete parameter persistence workflow."""
        try:
            from hbat.constants.parameters import AnalysisParameters

            # Mock complete workflow
            class MockGeometryDialog:
                def __init__(self):
                    self._param_values = {}
                    self.current_params = AnalysisParameters()

                def set_parameters(self, params):
                    """Store parameters."""
                    self._param_values.update(
                        {
                            "hb_distance": params.hb_distance_cutoff,
                            "hb_angle": params.hb_angle_cutoff,
                            "analysis_mode": params.analysis_mode,
                        }
                    )

                def modify_parameters(self, **kwargs):
                    """Simulate user modifying parameters."""
                    self._param_values.update(kwargs)

                def get_parameters(self):
                    """Retrieve final parameters."""
                    return AnalysisParameters(
                        hb_distance_cutoff=self._param_values.get("hb_distance", 3.5),
                        hb_angle_cutoff=self._param_values.get("hb_angle", 120.0),
                        analysis_mode=self._param_values.get(
                            "analysis_mode", "complete"
                        ),
                    )

            # Test workflow
            dialog = MockGeometryDialog()

            # 1. Set initial parameters
            initial_params = AnalysisParameters(
                hb_distance_cutoff=3.2, analysis_mode="local"
            )
            dialog.set_parameters(initial_params)

            # 2. User modifies parameters
            dialog.modify_parameters(hb_distance=3.8, hb_angle=130.0)

            # 3. Get final parameters
            final_params = dialog.get_parameters()

            # Verify parameters were preserved and modified correctly
            assert final_params.hb_distance_cutoff == 3.8  # Modified
            assert final_params.hb_angle_cutoff == 130.0  # Modified
            assert final_params.analysis_mode == "local"  # Preserved from initial

        except ImportError as e:
            pytest.skip(f"AnalysisParameters not available: {e}")


@pytest.mark.unit
class TestUtilityIntegration:
    """Test utility integration with GUI components."""

    def test_graphviz_utils_import(self):
        """Test GraphViz utilities can be imported."""
        try:
            from hbat.utilities.graphviz_utils import GraphVizDetector

            assert GraphVizDetector is not None
            assert hasattr(GraphVizDetector, "is_graphviz_available")

        except ImportError as e:
            pytest.skip(f"GraphViz utilities not available: {e}")

    def test_export_manager_import(self):
        """Test export manager can be imported."""
        try:
            from hbat.gui.export_manager import ExportManager

            assert ExportManager is not None

        except ImportError as e:
            pytest.skip(f"Export manager not available: {e}")
