using Avalonia.Controls;
using Avalonia.Headless.XUnit;
using Avalonia.VisualTree;
using JdeScoping.ConfigManager.Views;

namespace JdeScoping.ConfigManager.Tests.Views;

/// <summary>
/// UI tests for <see cref="MainWindow"/>.
/// </summary>
public class MainWindowTests
{
    /// <summary>
    /// Verifies that the main window displays with the correct title.
    /// </summary>
    [AvaloniaFact]
    public void MainWindow_ShowsWithCorrectTitle()
    {
        // Arrange & Act
        var window = new MainWindow();
        window.Show();

        // Assert
        window.Title.ShouldBe("JdeScoping ConfigManager");
    }

    /// <summary>
    /// Verifies that the main window contains a TreeView for navigation.
    /// </summary>
    [AvaloniaFact]
    public void MainWindow_ContainsTreeView()
    {
        // Arrange & Act
        var window = new MainWindow();
        window.Show();

        // Assert
        var treeView = window.FindDescendantOfType<TreeView>();
        treeView.ShouldNotBeNull();
    }

    /// <summary>
    /// Verifies that the main window contains a menu bar.
    /// </summary>
    [AvaloniaFact]
    public void MainWindow_ContainsMenuBar()
    {
        // Arrange & Act
        var window = new MainWindow();
        window.Show();

        // Assert
        var menu = window.FindDescendantOfType<Menu>();
        menu.ShouldNotBeNull();
    }

    /// <summary>
    /// Verifies that the main window has the expected minimum size constraints.
    /// </summary>
    [AvaloniaFact]
    public void MainWindow_HasExpectedMinimumSize()
    {
        // Arrange & Act
        var window = new MainWindow();
        window.Show();

        // Assert - MinWidth=900, MinHeight=600 as defined in AXAML
        window.MinWidth.ShouldBe(900);
        window.MinHeight.ShouldBe(600);
    }

    /// <summary>
    /// Verifies that the main window has the expected default size.
    /// </summary>
    [AvaloniaFact]
    public void MainWindow_HasExpectedDefaultSize()
    {
        // Arrange & Act
        var window = new MainWindow();
        window.Show();

        // Assert - Width=1200, Height=800 as defined in AXAML
        window.Width.ShouldBe(1200);
        window.Height.ShouldBe(800);
    }

    /// <summary>
    /// Verifies that the main window contains toolbar buttons.
    /// </summary>
    [AvaloniaFact]
    public void MainWindow_ContainsToolbarButtons()
    {
        // Arrange & Act
        var window = new MainWindow();
        window.Show();

        // Assert
        var buttons = window.GetVisualDescendants().OfType<Button>().ToList();
        buttons.Count.ShouldBeGreaterThan(0);

        // Verify toolbar buttons exist with expected content
        buttons.Any(b => b.Content?.ToString() == "Open").ShouldBeTrue();
        buttons.Any(b => b.Content?.ToString() == "Save").ShouldBeTrue();
        buttons.Any(b => b.Content?.ToString() == "Undo").ShouldBeTrue();
        buttons.Any(b => b.Content?.ToString() == "Redo").ShouldBeTrue();
        buttons.Any(b => b.Content?.ToString() == "Validate").ShouldBeTrue();
    }

    /// <summary>
    /// Verifies that the main window contains a ContentControl for form display.
    /// </summary>
    [AvaloniaFact]
    public void MainWindow_ContainsFormContentControl()
    {
        // Arrange & Act
        var window = new MainWindow();
        window.Show();

        // Assert
        var contentControl = window.FindDescendantOfType<ContentControl>();
        contentControl.ShouldNotBeNull();
    }

    /// <summary>
    /// Verifies that the main window contains a GridSplitter for resizing panels.
    /// </summary>
    [AvaloniaFact]
    public void MainWindow_ContainsGridSplitter()
    {
        // Arrange & Act
        var window = new MainWindow();
        window.Show();

        // Assert
        var splitter = window.FindDescendantOfType<GridSplitter>();
        splitter.ShouldNotBeNull();
    }

    /// <summary>
    /// Verifies that the menu contains expected menu items.
    /// </summary>
    [AvaloniaFact]
    public void MainWindow_ContainsExpectedMenuItems()
    {
        // Arrange & Act
        var window = new MainWindow();
        window.Show();

        // Assert
        var menuItems = window.GetVisualDescendants().OfType<MenuItem>().ToList();
        menuItems.Count.ShouldBeGreaterThan(0);

        // Verify top-level menu items exist
        menuItems.Any(m => m.Header?.ToString() == "_File").ShouldBeTrue();
        menuItems.Any(m => m.Header?.ToString() == "_Edit").ShouldBeTrue();
        menuItems.Any(m => m.Header?.ToString() == "_Tools").ShouldBeTrue();
        menuItems.Any(m => m.Header?.ToString() == "_Pipelines").ShouldBeTrue();
        menuItems.Any(m => m.Header?.ToString() == "_Secure Stores").ShouldBeTrue();
        menuItems.Any(m => m.Header?.ToString() == "_Help").ShouldBeTrue();
    }
}