using Core.Blueprint.Common.Runtime;
using Core.Blueprint.Common.Runtime.Health;
using Microsoft.Extensions.Diagnostics.HealthChecks;

namespace Core.Blueprint.Common.UnitTests;

public class BlueprintRuntimeTests
{
    [Fact]
    public void Create_WhenIncomingValueProvided_ReturnsTrimmedCorrelationId()
    {
        var correlationId = BlueprintCorrelationId.Create("  corr-123  ", new FakeClock());

        Assert.Equal("corr-123", correlationId.Value);
    }

    [Fact]
    public void Create_WhenIncomingValueMissing_UsesClockFallback()
    {
        var correlationId = BlueprintCorrelationId.Create(string.Empty, new FakeClock());

        Assert.Equal("corr-20260222120000111", correlationId.Value);
    }

    [Fact]
    public async Task CheckHealthAsync_WhenInvoked_ReturnsHealthyStatus()
    {
        var clock = new FakeClock();
        var healthCheck = new BlueprintRuntimeHealthCheck(clock);
        var context = new HealthCheckContext
        {
            Registration = new HealthCheckRegistration(
                "blueprint.runtime",
                healthCheck,
                failureStatus: null,
                tags: [])
        };

        var result = await healthCheck.CheckHealthAsync(context);

        Assert.Equal(HealthStatus.Healthy, result.Status);
        Assert.Equal(clock.UtcNow, result.Data["checkedAtUtc"]);
        Assert.Equal("blueprint.runtime", result.Data["component"]);
    }

    private sealed class FakeClock : IBlueprintSystemClock
    {
        public DateTimeOffset UtcNow => new(2026, 2, 22, 12, 0, 0, 111, TimeSpan.Zero);
    }
}