using Serilog;
using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Core.ScriptedAlarms;
using ZB.MOM.WW.OtOpcUa.Core.Scripting;
using ZB.MOM.WW.OtOpcUa.Runtime.Drivers;
using ZB.MOM.WW.OtOpcUa.Runtime.ScriptedAlarms;

namespace ZB.MOM.WW.OtOpcUa.Runtime.Tests.ScriptedAlarms;

/// <summary>
///     lmxopcua#779 — the engine the driver host builds for its scripted-alarm host runs predicates on the node's
///     <c>Scripting:RunTimeout</c>, not on the 250 ms Phase-7 default it used to fall back to.
/// </summary>
public sealed class ScriptedAlarmEngineBudgetWiringTests
{
    private static readonly ILogger Logger = new LoggerConfiguration().CreateLogger();

    [Fact]
    public void The_host_built_engine_uses_the_configured_RunTimeout()
    {
        using var engine = DriverHostActor.CreateScriptedAlarmEngine(
            new DependencyMuxTagUpstreamSource(), new InMemoryAlarmStateStore(), Logger,
            new ScriptingOptions { RunTimeout = TimeSpan.FromSeconds(5) });

        engine.ScriptTimeout.ShouldBe(TimeSpan.FromSeconds(5));
    }

    [Fact]
    public void With_no_Scripting_options_the_host_built_engine_gets_the_2s_default_not_250ms()
    {
        using var engine = DriverHostActor.CreateScriptedAlarmEngine(
            new DependencyMuxTagUpstreamSource(), new InMemoryAlarmStateStore(), Logger, scripting: null);

        engine.ScriptTimeout.ShouldBe(TimeSpan.FromSeconds(2));
        engine.ScriptTimeout.ShouldNotBe(TimedScriptEvaluator<AlarmPredicateContext, bool>.DefaultTimeout);
    }
}