using Marathon.UI.Services;

namespace Marathon.UI.Tests.Services;

public sealed class EventBrowsingStateTests
{
    [Fact]
    public void Default_filter_spans_minus_one_to_plus_seven_days()
    {
        var state = new EventBrowsingState();
        var f = state.PreMatch;
        (f.To - f.From).TotalDays.Should().BeApproximately(8, 0.01);
        f.SortKey.Should().Be(EventSortKey.ScheduledAt);
        f.SortDescending.Should().BeFalse();
    }

    [Fact]
    public void UpdatePreMatch_raises_OnChange_when_value_changes()
    {
        var state = new EventBrowsingState();
        var fired = 0;
        state.OnChange += () => fired++;

        var next = state.PreMatch with { SearchTerm = "Real Madrid" };
        state.UpdatePreMatch(next);

        fired.Should().Be(1);
        state.PreMatch.SearchTerm.Should().Be("Real Madrid");
    }

    [Fact]
    public void UpdatePreMatch_does_not_raise_when_value_unchanged()
    {
        var state = new EventBrowsingState();
        var fired = 0;
        state.OnChange += () => fired++;

        state.UpdatePreMatch(state.PreMatch with { });

        fired.Should().Be(0);
    }

    [Fact]
    public void Live_and_PreMatch_filters_are_independent()
    {
        var state = new EventBrowsingState();
        state.UpdateLive(state.Live with { SearchTerm = "live-only" });
        state.PreMatch.SearchTerm.Should().BeEmpty();
        state.Live.SearchTerm.Should().Be("live-only");
    }
}