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

using Svelto.Tasks;
using Svelto.Tasks.Enumerators;

namespace GamecraftModdingAPI.Tasks
{
    /// <summary>
    /// An asynchronous task to be performed once
    /// </summary>
    public class Once : ISchedulable
    {
        private Action task;

        private float delay;
        public IEnumerator<TaskContract> Run()
        {
            yield return new WaitForSecondsEnumerator(delay).Continue();
            task();
            yield return Yield.It;
        }

        /// <summary>
        /// Construct a single-run task
        /// </summary>
        /// <param name="task">The task to run once</param>
        /// <param name="after">The delay (in seconds) before the task is run</param>
        public Once(Action task, float after = 0.0f)
        {
            this.task = task;
            this.delay = after;
        }
    }
}