using CursorLang.Core.Models;
using CursorLang.Settings.ViewModels;

namespace CursorLang.Settings.Tests.ViewModels;

public sealed class EnumOptionTests
{
    [Fact]
    public void An_option_remembers_its_value_and_caption()
    {
        var option = new EnumOption<AppTheme>(AppTheme.Dark, "Dark theme");

        Assert.Equal(AppTheme.Dark, option.Value);
        Assert.Equal("Dark theme", option.Display);
    }

    [Fact]
    public void A_changed_caption_is_announced_to_subscribers()
    {
        var option = new EnumOption<AppTheme>(AppTheme.Dark, "Dark");
        List<string?> changed = [];
        option.PropertyChanged += (_, e) => changed.Add(e.PropertyName);

        option.Display = "Dark theme";

        Assert.Equal("Dark theme", option.Display);
        Assert.Equal([nameof(EnumOption<>.Display)], changed);
    }

    [Fact]
    public void The_same_caption_is_not_announced_again()
    {
        var option = new EnumOption<AppTheme>(AppTheme.Dark, "Dark theme");
        List<string?> changed = [];
        option.PropertyChanged += (_, e) => changed.Add(e.PropertyName);

        option.Display = "Dark theme";

        Assert.Empty(changed);
    }

    // Accessibility tools take the name of a list item from here
    [Fact]
    public void An_option_presents_itself_by_its_caption()
    {
        Assert.Equal("Dark theme", new EnumOption<AppTheme>(AppTheme.Dark, "Dark theme").ToString());
    }

    [Fact]
    public void A_changed_caption_changes_the_presentation_too()
    {
        var option = new EnumOption<ScreenPosition>(ScreenPosition.Center, "Center") { Display = "In the centre" };

        Assert.Equal("In the centre", option.ToString());
    }
}