using Bunit;
using Marathon.UI.Components;
using Marathon.UI.Services;
using Marathon.UI.Tests.Support;

namespace Marathon.UI.Tests;

public sealed class LocaleSwitcherTests : MarathonTestContext
{
    [Fact]
    public void Defaults_to_russian()
    {
        var cut = RenderComponent<LocaleSwitcher>();

        var ruButton = cut.FindAll(".m-segmented__btn")[0];
        var enButton = cut.FindAll(".m-segmented__btn")[1];

        ruButton.ClassList.Should().Contain("is-active");
        enButton.ClassList.Should().NotContain("is-active");
    }

    [Fact]
    public async Task Switching_to_english_updates_locale_and_persists_setting()
    {
        var cut = RenderComponent<LocaleSwitcher>();

        var enButton = cut.FindAll(".m-segmented__btn")[1];
        await cut.InvokeAsync(() => enButton.Click());

        Locale.Culture.Name.Should().Be(LocaleState.English);
        System.Globalization.CultureInfo.CurrentUICulture.Name.Should().Be(LocaleState.English);

        Writer.Saved.Should().ContainKey(LocalizationOptions.SectionName);
        var saved = (LocalizationOptions)Writer.Saved[LocalizationOptions.SectionName];
        saved.DefaultCulture.Should().Be(LocaleState.English);
    }

    [Fact]
    public async Task Switching_to_already_active_locale_is_a_no_op()
    {
        var cut = RenderComponent<LocaleSwitcher>();

        var ruButton = cut.FindAll(".m-segmented__btn")[0];
        await cut.InvokeAsync(() => ruButton.Click());

        Writer.Saved.Should().BeEmpty();
    }
}