using Bunit;
using Marathon.UI.Pages.Anomalies;
using Marathon.UI.Services;
using Marathon.UI.Tests.Support;

namespace Marathon.UI.Tests.Pages.Anomalies;

public sealed class AnomalyFeedTests : MarathonTestContext
{
    [Fact]
    public void Renders_seeded_anomaly_cards()
    {
        AnomalyBrowsing.SportCodes.AddRange(new[] { 6, 11 });
        AnomalyBrowsing.Items.AddRange(new[]
        {
            FakeAnomalyBrowsingService.MakeItem(title: "Lakers vs Bulls", sport: 6, score: 0.65m),
            FakeAnomalyBrowsingService.MakeItem(title: "Arsenal vs Chelsea", sport: 11, score: 0.40m),
        });

        var cut = RenderComponent<AnomalyFeed>();

        cut.WaitForAssertion(() =>
        {
            cut.FindAll("[data-test=anomaly-card]").Count.Should().Be(2);
            cut.Markup.Should().Contain("Lakers vs Bulls");
            cut.Markup.Should().Contain("Arsenal vs Chelsea");
        });
    }

    [Fact]
    public void Renders_empty_state_when_no_anomalies_match_filter()
    {
        var cut = RenderComponent<AnomalyFeed>();
        cut.WaitForAssertion(() =>
        {
            cut.FindAll("[data-test=anomaly-empty]").Should().NotBeEmpty();
            cut.Markup.Should().Contain("Anomaly.Empty.NoneInRange");
        });
    }

    [Fact]
    public void Severity_chip_filter_narrows_the_list()
    {
        AnomalyBrowsing.Items.AddRange(new[]
        {
            FakeAnomalyBrowsingService.MakeItem(title: "High event", score: 0.70m),
            FakeAnomalyBrowsingService.MakeItem(title: "Low event", score: 0.32m),
        });

        var cut = RenderComponent<AnomalyFeed>();
        cut.WaitForAssertion(() =>
            cut.FindAll("[data-test=anomaly-card]").Count.Should().Be(2));

        // Click the High severity chip.
        var highChip = cut.FindAll("[data-test=severity-chip]")
            .First(e => e.GetAttribute("data-severity") == "High");
        highChip.Click();

        cut.WaitForAssertion(() =>
        {
            var cards = cut.FindAll("[data-test=anomaly-card]");
            cards.Count.Should().Be(1);
            cut.Markup.Should().Contain("High event");
            cut.Markup.Should().NotContain("Low event");
            AnomalyBrowsing.LastFilter.Should().NotBeNull();
            AnomalyBrowsing.LastFilter!.MinSeverity.Should().Be(AnomalySeverity.High);
        });
    }

    [Fact]
    public void Sport_chip_filter_narrows_the_list()
    {
        AnomalyBrowsing.SportCodes.AddRange(new[] { 6, 11 });
        AnomalyBrowsing.Items.AddRange(new[]
        {
            FakeAnomalyBrowsingService.MakeItem(title: "Lakers vs Bulls", sport: 6, score: 0.55m),
            FakeAnomalyBrowsingService.MakeItem(title: "Arsenal vs Chelsea", sport: 11, score: 0.55m),
        });

        var cut = RenderComponent<AnomalyFeed>();
        cut.WaitForAssertion(() =>
            cut.FindAll("[data-test=anomaly-card]").Count.Should().Be(2));

        // Pick the basketball chip (sport=6).
        var sportChips = cut.FindAll("[data-test=sport-chip]");
        sportChips.Should().NotBeEmpty();
        sportChips.First().Click();

        cut.WaitForAssertion(() =>
        {
            AnomalyBrowsing.LastFilter.Should().NotBeNull();
            AnomalyBrowsing.LastFilter!.SportCodes.Should().NotBeNull();
            AnomalyBrowsing.LastFilter!.SportCodes!.Should().HaveCount(1);
        });
    }

    [Fact]
    public void Mark_read_button_clears_unread_count_in_state()
    {
        AnomalyState.SetUnreadCount(5);
        AnomalyBrowsing.UnreadCount = 0;
        AnomalyBrowsing.Items.Add(FakeAnomalyBrowsingService.MakeItem());

        var cut = RenderComponent<AnomalyFeed>();
        cut.WaitForAssertion(() =>
            cut.FindAll("[data-test=anomaly-card]").Count.Should().Be(1));

        cut.Find("[data-test=mark-read]").Click();

        AnomalyState.UnreadCount.Should().Be(0);
        AnomalyState.LastSeenUtc.Should().BeAfter(DateTimeOffset.MinValue);
    }
}