using System.Collections.Generic;
using Gameplay.Character;
using Gameplay.Common;
using Gameplay.Performance;
using Gameplay.Unit;
using Gameplay.Vehicle.Impl;
using PhxhSDK;
using UnityEngine;
namespace Code.Scripts.Gameplay.PlaneShadow
{
    public class PlaneShadowManager
    {
        
        private static PlaneShadowManager _instance;
        public static PlaneShadowManager instance
        {
            get
            {
                if (_instance == null)
                {
                    _instance = new PlaneShadowManager();
                }
                return _instance;
            }
        }
        
        private List<ViewPlaneShadow> _viewPlaneShadows = new List<ViewPlaneShadow>();
        private Transform _rootTrans;

        public void Init()
        {
            var rootObj = new GameObject("[PlaneShadowRoot]");
            _rootTrans = rootObj.transform;
        }
        
        public void AddUnit(GameUnit unit)
        {
            if (!PerformanceManager.instance.data.usePanelShadow) return;
            if (unit is Character unitCharacter)
            {
                var shadowPath = PathDefine.PlaneShadow.PLANE_SHADOW_CHARACTER_PATH;
                var view = new ViewPlaneShadow(unitCharacter);
                view.CreateView(shadowPath, _rootTrans);
                _viewPlaneShadows.Add(view);
            } 
            else if (unit is NormalVehicle unitVehicle)
            {
                var shadowPath = PathDefine.PlaneShadow.PLANE_SHADOW_VEHICLE_PATH;
                var view = new ViewPlaneShadow(unitVehicle);
                view.CreateView(shadowPath, _rootTrans);
                _viewPlaneShadows.Add(view);
            }
        }

        public void ViewUpdate()
        {
            for (int i = 0; i < _viewPlaneShadows.Count; i++)
            {
                var view = _viewPlaneShadows[i];
                view.ViewUpdate();
                if (view.needRemove)
                {
                    view.Dispose();
                    _viewPlaneShadows.RemoveAt(i);
                    i--;
                }
            }
        }

        public void Dispose()
        {
            for (int i = 0; i < _viewPlaneShadows.Count; i++)
            {
                var view = _viewPlaneShadows[i];
                view.Dispose();
            }
            _viewPlaneShadows.Clear();
            Object.Destroy(_rootTrans.gameObject);
            _instance = null;
        }
        
    }
}