Job scheduler compatible with Umbraco upgrading or doing first boot

Scheduler.cs

using Hangfire;
using Umbraco.Cms.Core;
using Umbraco.Cms.Core.Composing;
using Umbraco.Cms.Core.Services;

namespace UmbraCalendar.Jobs;

public class Scheduler : IComposer
{
    
    public void Compose(IUmbracoBuilder builder)
    {
        builder.Components().Append<SchedulerComponent>();
    }

    public class SchedulerComponent : IComponent
    {
        private readonly IRuntimeState _runtimeState;

        public SchedulerComponent(IRuntimeState runtimeState)
        {
            _runtimeState = runtimeState;    
        }

        public void Initialize()
        {
            // ⚠️ test if the site is running, we shouldn't schedule tasks in any other state 
            if(_runtimeState.Level < RuntimeLevel.Run) return;
            
            RecurringJob.AddOrUpdate<IHangfireTestService>($"💡 Run test task", x =>
                x.RunTestTask(null), "0 */4 * * *");
        }
        
        public void Terminate()
        { }
    }
}