namespace AcDream.UI.Abstractions.Tests;

/// <summary>
/// K.3: <see cref="IPanelRenderer"/> gains a top-of-screen menu-bar
/// surface for global navigation. Same shape as ImGui's main menu bar:
/// open with <c>BeginMainMenuBar</c>, drop top-level menus with
/// <c>BeginMenu</c>, drop clickable items with <c>MenuItem</c> (which
/// returns true on the frame the user clicks).
/// </summary>
public sealed class IPanelRendererMainMenuBarTests
{
    [Fact]
    public void BeginMainMenuBar_records_call_and_returns_default_true()
    {
        var r = new FakePanelRenderer();
        bool result = r.BeginMainMenuBar();
        Assert.True(result);
        Assert.Contains(r.Calls, c => c.Method == "BeginMainMenuBar");
    }

    [Fact]
    public void BeginMainMenuBar_returns_override_when_set()
    {
        var r = new FakePanelRenderer { MainMenuBarReturns = false };
        Assert.False(r.BeginMainMenuBar());
    }

    [Fact]
    public void EndMainMenuBar_records_call()
    {
        var r = new FakePanelRenderer();
        r.EndMainMenuBar();
        Assert.Contains(r.Calls, c => c.Method == "EndMainMenuBar");
    }

    [Fact]
    public void BeginMenu_records_label_and_returns_default_true()
    {
        var r = new FakePanelRenderer();
        bool result = r.BeginMenu("View");
        Assert.True(result);
        var call = Assert.Single(r.Calls, c => c.Method == "BeginMenu");
        Assert.Equal("View", call.Args[0]);
    }

    [Fact]
    public void BeginMenu_returns_override_when_set()
    {
        var r = new FakePanelRenderer { MenuReturns = false };
        Assert.False(r.BeginMenu("View"));
    }

    [Fact]
    public void EndMenu_records_call()
    {
        var r = new FakePanelRenderer();
        r.EndMenu();
        Assert.Contains(r.Calls, c => c.Method == "EndMenu");
    }

    [Fact]
    public void MenuItem_records_label_and_shortcut()
    {
        var r = new FakePanelRenderer();
        r.MenuItem("Settings", "F11");
        var call = Assert.Single(r.Calls, c => c.Method == "MenuItem");
        Assert.Equal("Settings", call.Args[0]);
        Assert.Equal("F11", call.Args[1]);
    }

    [Fact]
    public void MenuItem_returns_override_when_set()
    {
        var r = new FakePanelRenderer { MenuItemReturns = true };
        Assert.True(r.MenuItem("Settings"));
    }

    [Fact]
    public void MenuItem_default_returns_false_unsclicked()
    {
        var r = new FakePanelRenderer();
        Assert.False(r.MenuItem("Settings"));
    }
}