using System;
using Sirenix.OdinInspector;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

namespace Ether
{
    [RequireComponent(typeof(Image))]
    public class ToggleEx : SerializedMonoBehaviour, IPointerClickHandler, IPointerDownHandler, IPointerUpHandler
    {
        [LabelText("选择状态显示")] [PropertyOrder(1)]
        public GameObject checkRoot;

        [LabelText("非选择状态显示")][PropertyOrder(2)]
        public GameObject uncheckRoot;

        [PropertySpace(20)]
        [LabelText("选择状态")]
        [ShowInInspector]
        [PropertyOrder(3)]
        public bool IsOn
        {
            set
            {
                isOn = value;
                SetIsOnState();
            }

            get => isOn;
        }

        private bool isOn;
        
        [PropertySpace(20)]
        
        [LabelText("组")]
        [PropertyOrder(4)]
        public ToggleGroupEx toggleGroup;

        /// <summary>
        /// 值改变事件
        /// </summary>
        public ActionEvent<bool> OnValueChange { get; } = new ActionEvent<bool>();

        private void Awake()
        {
            if (toggleGroup)
            {
                toggleGroup.AddToggle(this);
            }
        }

        public void OnPointerClick(PointerEventData eventData)
        {
            if (toggleGroup != null && IsOn)
            {
                return;
            }
            
            isOn = !isOn;

            SetIsOnState();
            OnValueChange.Invoke(IsOn);
        }

        private void SetIsOnState()
        {
            checkRoot?.SetActive(isOn);
            uncheckRoot?.SetActive(!isOn);

            if (isOn && toggleGroup != null)
            {
                toggleGroup.SetToggleSelected(this);
            }
        }
        
        // 在编辑器模式下，当脚本中的公共变量发生变化时调用此方法
        private void OnValidate()
        {
            // 如果在编辑器模式下，提示用户检查这些字段是否已分配
#if UNITY_EDITOR
            if (uncheckRoot == null)
            {
                Transform trans = transform.Find("Uncheck");
                if (trans != null)
                {
                    uncheckRoot = trans.gameObject;
                }
                else
                {
                    uncheckRoot = new GameObject("Uncheck", typeof(RectTransform));
                    uncheckRoot.transform.SetParent(transform);
                }
                uncheckRoot.transform.localPosition = Vector3.zero;
                RectTransform rect = uncheckRoot.GetComponent<RectTransform>();
                rect.anchorMin = Vector2.zero;
                rect.anchorMax = new Vector2(1, 1);
                rect.sizeDelta = Vector2.zero;
            }

            if (checkRoot == null)
            {
                Transform trans = transform.Find("Check");
                if (trans != null)
                {
                    checkRoot = trans.gameObject;
                }
                else
                {
                    checkRoot = new GameObject("Check", typeof(RectTransform));
                    checkRoot.transform.SetParent(transform);
                }
                checkRoot.transform.localPosition = Vector3.zero;
                RectTransform rect = checkRoot.GetComponent<RectTransform>();
                rect.anchorMin = Vector2.zero;
                rect.anchorMax = new Vector2(1, 1);
                rect.sizeDelta = Vector2.zero;
            }
            
            Image img = GetComponent<Image>();
            if (img.color.a != 0)
            {
                img.color = new Color(1, 1, 1, 0);
            }
#endif
        }

        public void OnPointerDown(PointerEventData eventData)
        {
        
        }

        public void OnPointerUp(PointerEventData eventData)
        {
            
        }
    }
}