using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Gameplay.Common;
using Gameplay.Unit;

namespace Gameplay.Pause
{
    using UnityEngine;
    using Character;
    using Gameplay.Skill;

    public class ParticalPauser : IPauser
    {

        public readonly ParticleSystem rawPartical;

        private float _logicScale = 1f;

        public float logicScale
        {
            get
            {
                return _logicScale;
            }
        }

        public bool isScaleChanged;

        public GameUnit owner;

        public ParticalPauser(ParticleSystem rawPartical)
        {
            isScaleChanged = false;
            this.rawPartical = rawPartical;
        }

        public void LogicUpdate(float dt)
        {
            if (IsNeedRemove())
            {
                return;
            }

            var slogicScale = 1;
            if (SkillManager.instance.needSkillPaused && SkillManager.instance.inSkillingUnit != owner)
            {
                slogicScale = 0;
            }

            if (Math.Abs(_logicScale - slogicScale) > 0.1f)
            {
                _logicScale = slogicScale;
                isScaleChanged = true;
            }

            if (isScaleChanged || PauseManager.instance.isSpeedChanged)
            {
                isScaleChanged = false;
                var main = rawPartical.main;
                main.simulationSpeed = PauseManager.instance.globalScale * logicScale;
            }
        }
        
        public bool isEffect
        {
            get;
            set;
        }

        public bool IsNeedRemove()
        {
            return rawPartical == null || rawPartical.isStopped;
        }

    }
}