using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEngine;
using Wing.Utils;

namespace Wing.Gizmos
{
    public class GizmosManager : MonoSingleton<GizmosManager>
    {
        private GizmosMove _gizmosMove;
        private GizmosScale _gizmosScale;
        private GizmosRotate _gizmosRotate;

        void Start()
        {
            var glayer = 1 << LayerMask.NameToLayer(Settings.GizmosLayerName);
            var nlayer = 1 << LayerMask.NameToLayer(Settings.NavLayerName);
            var mask = Camera.main.cullingMask;
            Camera.main.cullingMask = ((glayer | mask) & ~nlayer);
        }

        public static bool IsOnGizmos()
        {
            int layer = LayerMask.NameToLayer(Settings.GizmosLayerName);
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hit;
            if (Physics.Raycast(ray, out hit, 1000, 1 << layer))
            {
                return hit.collider.gameObject != null;
            }

            return false;
        }

        public GizmosRotate GetSingleRotate()
        {
            if(_gizmosRotate == null)
            {
                _gizmosRotate = CreateRotate();
            }
            return _gizmosRotate;
        }

        public GizmosRotate CreateRotate()
        {
            GameObject go = new GameObject("gizmos-rotate");
            go.transform.SetParent(this.transform);
            return go.AddComponent<GizmosRotate>();
        }

        public GizmosMove GetSingleMove()
        {
            if(_gizmosMove == null)
            {
                _gizmosMove = CreateMove();
            }
            return _gizmosMove;
        }

        public GizmosMove CreateMove()
        {
            GameObject Prefab = Resources.Load("Prefabs/GizmosMove") as GameObject;
            GameObject obj = Instantiate(Prefab);
            return obj.GetComponent<GizmosMove>();
        }

        public GizmosScale GetSingleScale()
        {
            if(_gizmosScale == null)
            {
                _gizmosScale = CreateScale();
            }

            return _gizmosScale;
        }

        public GizmosScale CreateScale()
        {
            GameObject Prefab = Resources.Load("Prefabs/GizmosScale") as GameObject;
            GameObject obj = Instantiate(Prefab);
            return obj.GetComponent<GizmosScale>();
        }
    }
}