using System;
using UnityEngine;
using UnityEngine.EventSystems;

namespace ZXL.Scripts.UI
{
    public class ModelControls : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler
    {
        private bool isCanControl;
        public Transform parent;
        public float speed = 2;

        private void Update()
        {
            if (isCanControl)
            {
                if (Input.GetMouseButton(0)) // 左键
                {
                    var x = -Input.GetAxis("Mouse Y") * speed;
                    var y = Input.GetAxis("Mouse X") * speed;

                    if (x > 0 && parent.eulerAngles.x >= 90 && parent.eulerAngles.x < 180)
                    {
                        x = 0;
                        parent.eulerAngles = new Vector3(90, parent.eulerAngles.y, 0);
                    }
                    else if (x < 0 && (parent.eulerAngles.x <= 0 || parent.eulerAngles.x > 180))
                    {
                        x = 0;
                        parent.eulerAngles = new Vector3(0, parent.eulerAngles.y, 0);
                    }

                    parent.eulerAngles += new Vector3(x, y, 0);
                }
                else if (Input.GetMouseButton(1)) // 右键
                {
                    var x = -Input.GetAxis("Mouse Y");
                    var y = Input.GetAxis("Mouse X");
                    parent.position += new Vector3(-y, x, 0);
                }

                parent.Translate(new Vector3(0, 0, Input.mouseScrollDelta.y));
            }
        }

        public void OnPointerEnter(PointerEventData eventData)
        {
            isCanControl = true;
        }

        public void OnPointerExit(PointerEventData eventData)
        {
            isCanControl = false;
        }

        public void ResetCamera()
        {
            parent.position = Vector3.zero;
            parent.rotation = Quaternion.identity;
        }
    }
}