using System;

using UnityEngine;

namespace asim.unity.utils
{
    /// <summary>
    /// Handels running of action after a delay or repeat. Executes via a static extension class
    /// Uses ComponentTimer
    /// </summary>
    internal class TimerAction : MonoBehaviour
    {
        Action action;
        ComponentTimer timer;

        internal static void CreateDelayedAction(Action action, float delay)
        {
            var go = new GameObject();
            var timerAction = go.AddComponent<TimerAction>();
            go.hideFlags = HideFlags.HideAndDontSave;

            timerAction.action = action;

            timerAction.timer = ComponentTimer.CreateNew(go);
            timerAction.timer.Setup(delay);
            timerAction.timer.StartTimer();
        }
        internal static void CreateRepeatAction(Action action, float interval, int maxRuns = int.MaxValue)
        {
            var go = new GameObject();
            var timerAction = go.AddComponent<TimerAction>();
            go.hideFlags = HideFlags.HideAndDontSave;

            timerAction.action = action;

            timerAction.timer = ComponentTimer.CreateNew(go);
            timerAction.timer.SetupInterval(0, interval, true, maxRuns);
            timerAction.timer.StartTimer();
        }

        void Update()
        {
            if (timer.TimerHit)
            {
                action.Invoke();
            }

            if (!timer.IsRuning)
            {
                Destroy(gameObject);
            }
        }
    }

    public static class TimerActionExtensions
    {
        public static void RunAfterDelay(this Action action, float delay)
        {
            TimerAction.CreateDelayedAction(action, delay);
        }
        public static void RunRepeat(this Action action, float interval, int maxRuns = int.MaxValue)
        {
            TimerAction.CreateRepeatAction(action, interval, maxRuns);
        }
    }
}