using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace YKMoon.StateMachines
{
    public enum StateMachineUpdateType
    {
        Normal,
        Unscaled,
    }
    public class StateMachineManager : USingletonMono<StateMachineManager>
    {
        private List<StateMachine> normalUpdateMachines = new List<StateMachine>();
        private List<StateMachine> unscaledUpdateMachines = new List<StateMachine>();
        public static void Reg(StateMachine stateMachine, StateMachineUpdateType updateType)
        {
            switch(updateType) {
                case StateMachineUpdateType.Normal:
                    if(!Instance.normalUpdateMachines.Contains(stateMachine)) {
                        Instance.normalUpdateMachines.Add(stateMachine);
                    }
                    break;
                case StateMachineUpdateType.Unscaled:
                    if(!Instance.unscaledUpdateMachines.Contains(stateMachine)) {
                        Instance.unscaledUpdateMachines.Add(stateMachine);
                    }
                    break;
            }
            
        }

        public static void UnReg(StateMachine stateMachine, StateMachineUpdateType updateType)
        {
            switch(updateType) {
                case StateMachineUpdateType.Normal:
                    if(Instance.normalUpdateMachines.Contains(stateMachine)) {
                        Instance.normalUpdateMachines.Remove(stateMachine);
                    }
                    break;
                case StateMachineUpdateType.Unscaled:
                    if(Instance.unscaledUpdateMachines.Contains(stateMachine)) {
                        Instance.unscaledUpdateMachines.Remove(stateMachine);
                    }
                    break;
            }
           
        }

        public static void Clear()
        {
            Instance.normalUpdateMachines.Clear();
            Instance.unscaledUpdateMachines.Clear();
        }

        private void Update()
        {
            for(int i = 0; i < normalUpdateMachines.Count; i++) {
                normalUpdateMachines[i].Update(Time.deltaTime);
            }
            for(int i = 0; i < unscaledUpdateMachines.Count; i++) {
                unscaledUpdateMachines[i].Update(Time.unscaledDeltaTime);
            }
        }
    }
}