using System.Diagnostics.Metrics;
using ItWorx.KnowledgeHub.Application.Operations;

namespace ItWorx.KnowledgeHub.IntegrationTests.Operations;

public sealed class PlatformMetricsTests
{
    [Fact]
    public void Metrics_reject_unbounded_operation_and_outcome_dimensions()
    {
        var observed = new List<KeyValuePair<string, object?>>();
        using var listener = new MeterListener();
        listener.InstrumentPublished = (instrument, current) =>
        {
            if (instrument.Meter.Name == "ItWorx.KnowledgeHub.Platform") current.EnableMeasurementEvents(instrument);
        };
        listener.SetMeasurementEventCallback<double>((_, _, tags, _) => observed.AddRange(tags.ToArray()));
        listener.SetMeasurementEventCallback<long>((_, _, tags, _) => observed.AddRange(tags.ToArray()));
        listener.Start();
        using var metrics = new PlatformMetrics();
        metrics.Record("private query and bearer token", "secret", 0.1, 3);
        Assert.NotEmpty(observed);
        Assert.All(observed, tag => Assert.Contains(tag.Key, new[] { "operation", "outcome" }));
        Assert.DoesNotContain(observed, tag => tag.Value?.ToString()?.Contains("secret", StringComparison.Ordinal) == true);
        Assert.Contains(observed, tag => tag.Value?.ToString() == "other");
    }
}