import domain.GameSolver;
import domain.HitoriGameMoves;
import GUI.GameUIController;
import GUI.HitoriBoardPanel;
import javafx.scene.control.Button;
import org.junit.jupiter.api.*;
import javafx.scene.input.MouseButton;
import javafx.scene.input.MouseEvent;
import org.junit.jupiter.api.extension.ExtendWith;
import org.testfx.framework.junit5.ApplicationExtension;
import static org.mockito.Mockito.*;
import static org.junit.jupiter.api.Assertions.*;

@ExtendWith(ApplicationExtension.class)
class HitoriBoardPanelTest {
    private HitoriBoardPanel boardPanel;
    private HitoriGameMoves gameMoves;
    private GameSolver gameSolver;
    private GameUIController controller;
    private static final int[][] TEST_BOARD = {
            {1, 2, 1},
            {2, 1, 2},
            {1, 2, 1}
    };

    @BeforeEach
    void setUp() {
        gameMoves = new HitoriGameMoves(TEST_BOARD);
        gameSolver = new GameSolver(TEST_BOARD);
        controller = mock(GameUIController.class);
        boardPanel = new HitoriBoardPanel(gameMoves, gameSolver, controller);
    }

    @Test
    void testInitialization() {
        assertNotNull(boardPanel);
        assertEquals(9, boardPanel.getChildren().size()); // 3x3 board = 9 buttons
    }

    @Test
    void testCellCreation() {
        var children = boardPanel.getChildren();
        var firstButton = (Button) children.get(0);
        assertEquals("1", firstButton.getText());
    }

    @Test
    void testButtonStyling() {
        var children = boardPanel.getChildren();
        var button = (Button) children.get(0);
        assertEquals("-fx-background-color: lightgray; -fx-text-fill: black;", button.getStyle());
    }

    @Test
    void testUpdateBoard() {
        boardPanel.updateBoard();
        assertEquals(9, boardPanel.getChildren().size());
    }

    @Test
    void testShowErrors() {
        // Mark some cells as black to create errors
        gameMoves.markCellAsBlack(0, 0);
        gameMoves.markCellAsBlack(0, 1);

        boardPanel.showErrors();

        // Verify that error cells are marked red
        var children = boardPanel.getChildren();
        for (var child : children) {
            Button button = (Button) child;
            if (button.getStyle().contains("red")) {
                assertTrue(true);
                return;
            }
        }
    }

    @Test
    void testLeftClickHandling() {
        when(controller.isPaused()).thenReturn(false);
        var button = (Button) boardPanel.getChildren().get(0);

        MouseEvent event = mock(MouseEvent.class);
        when(event.getButton()).thenReturn(MouseButton.PRIMARY);
        button.fireEvent(event);

        verify(controller, times(0)).handleLeftClick(anyInt(), anyInt());
    }

    @Test
    void testRightClickHandling() {
        when(controller.isPaused()).thenReturn(false);
        var button = (Button) boardPanel.getChildren().get(0);

        MouseEvent event = mock(MouseEvent.class);
        when(event.getButton()).thenReturn(MouseButton.SECONDARY);
        button.fireEvent(event);

        verify(controller, times(0)).handleRightClick(anyInt(), anyInt());
    }

    @Test
    void testPausedState() {
        when(controller.isPaused()).thenReturn(true);
        var button = (Button) boardPanel.getChildren().get(0);

        MouseEvent event = mock(MouseEvent.class);
        when(event.getButton()).thenReturn(MouseButton.PRIMARY);
        button.fireEvent(event);

        verify(controller, never()).handleLeftClick(anyInt(), anyInt());
    }
}