using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Threading;

namespace HashCalculator.GUI
{
    internal class DisposableDispatcherTimer : IDisposable
    {
        public DispatcherTimer Timer { get; }
        public DateTimeOffset CreationTime { get; } = DateTimeOffset.UtcNow;
        public TimeSpan TimeSinceCreation => DateTimeOffset.UtcNow - CreationTime;

        public DisposableDispatcherTimer(Action<DisposableDispatcherTimer> action, Dispatcher dispatcher, TimeSpan interval) : 
            this(action, dispatcher, interval, TimeSpan.Zero)
        {
        }

        public DisposableDispatcherTimer(Action<DisposableDispatcherTimer> action, Dispatcher dispatcher, TimeSpan interval, TimeSpan wait)
        {
            Timer = new DispatcherTimer(interval, DispatcherPriority.Normal, (s, e) =>
            {
                if (Timer!.IsEnabled && (TimeSinceCreation > wait))
                {
                    action(this);
                }
            }, dispatcher);
            Timer.Start();
        }

        public void Dispose()
        {
            Timer.Stop();
        }
    }
}