using Akka.Actor;
using Akka.TestKit;
using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Runtime.ScriptedAlarms;
using ZB.MOM.WW.OtOpcUa.Runtime.Tests.Harness;

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

public sealed class ScriptedAlarmActorTests : RuntimeActorTestBase
{
    [Fact]
    public void Full_state_cycle_publishes_StateChanged_to_parent_at_each_transition()
    {
        var parent = CreateTestProbe();
        // Wrap the alarm actor under our probe as parent so StateChanged lands on the probe.
        var actor = parent.ChildActorOf(ScriptedAlarmActor.Props("alarm-1"));

        actor.Tell(new ScriptedAlarmActor.ConditionMet("threshold"));
        var t1 = parent.ExpectMsg<ScriptedAlarmActor.StateChanged>();
        t1.State.ShouldBe(ScriptedAlarmActorState.Active);

        actor.Tell(new ScriptedAlarmActor.AcknowledgeAlarm("joe"));
        var t2 = parent.ExpectMsg<ScriptedAlarmActor.StateChanged>();
        t2.State.ShouldBe(ScriptedAlarmActorState.Acknowledged);

        actor.Tell(new ScriptedAlarmActor.ConditionCleared());
        var t3 = parent.ExpectMsg<ScriptedAlarmActor.StateChanged>();
        t3.State.ShouldBe(ScriptedAlarmActorState.Inactive);
    }

    [Fact]
    public void Duplicate_ConditionMet_in_Active_is_ignored()
    {
        var parent = CreateTestProbe();
        var actor = parent.ChildActorOf(ScriptedAlarmActor.Props("alarm-1"));

        actor.Tell(new ScriptedAlarmActor.ConditionMet("first"));
        parent.ExpectMsg<ScriptedAlarmActor.StateChanged>();

        actor.Tell(new ScriptedAlarmActor.ConditionMet("second"));
        parent.ExpectNoMsg(TimeSpan.FromMilliseconds(200));
    }
}