using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif

namespace AdaptUI
{
    [System.Serializable]
    public struct RectTransformData
    {
        public Vector2 anchorMin;
        public Vector2 anchorMax;
        public Vector2 anchoredPosition;
        public Vector2 sizeDelta;

        public RectTransformData(RectTransform rect)
        {
            anchorMin = rect.anchorMin;
            anchorMax = rect.anchorMax;
            anchoredPosition = rect.anchoredPosition;
            sizeDelta = rect.sizeDelta;
        }

        public bool IsValid()
        {
            return anchorMin != Vector2.zero || anchorMax != Vector2.zero || anchoredPosition != Vector2.zero || sizeDelta != Vector2.zero;
        }
    }

    [ExecuteAlways]
    [RequireComponent(typeof(RectTransform))]
    public class UIAdaptiveRect : MonoBehaviour
    {
        [Header("初始 布局")]
        [SerializeField] public RectTransformData defaultLayout;
        [Header("iPhone 布局")]
        [SerializeField] public RectTransformData iPhoneLayout;

        [Header("iPad 布局")]
        [SerializeField] public RectTransformData iPadLayout;

        private RectTransform rectTransform;

        //添加 isInitialized 变量，默认未初始化
        private bool isInitialized = false;

        private void Awake()
        {
            rectTransform = GetComponent<RectTransform>();
#if UNITY_EDITOR
            // 如果未初始化，不要应用布局，等待 Reset() 赋值
            if (!isInitialized)
            {
                //Debug.Log("UIAdaptiveRect: 未初始化，跳过 ApplyLayout()");
                return;
            }
#endif
            ApplyLayout();  // 运行时应用 UI 适配
        }


#if UNITY_EDITOR
        private void Reset()
        {
            rectTransform = GetComponent<RectTransform>();

            if (!isInitialized)
            {
                //Debug.Log("UIAdaptiveRect: 首次挂载，自动记录当前 UI 作为默认布局");
                defaultLayout = new RectTransformData(rectTransform);
                iPhoneLayout = new RectTransformData(rectTransform);
                iPadLayout = new RectTransformData(rectTransform);
                isInitialized = true;  // ✅ 记录已初始化，避免 Awake() 误触
            }
        }

        // private void OnValidate()
        // {
        //     if (rectTransform == null)
        //         rectTransform = GetComponent<RectTransform>();

        //     if (!iPhoneLayout.IsValid() || !iPadLayout.IsValid())
        //     {
        //         Debug.Log("📌 OnValidate: 重新初始化 iPhone & iPad 布局");
        //         iPhoneLayout = new RectTransformData(rectTransform);
        //         iPadLayout = new RectTransformData(rectTransform);
        //     }
        // }

#endif


        public void ApplyLayout()
        {
            if (rectTransform == null) return;

            DeviceTypeHelper.DeviceType deviceType = DeviceTypeHelper.DetectDeviceType();
            RectTransformData targetLayout = (deviceType == DeviceTypeHelper.DeviceType.iPhone) ? iPhoneLayout : iPadLayout;

            rectTransform.anchorMin = targetLayout.anchorMin;
            rectTransform.anchorMax = targetLayout.anchorMax;
            rectTransform.anchoredPosition = targetLayout.anchoredPosition;
            rectTransform.sizeDelta = targetLayout.sizeDelta;
           // Debug.Log($"📌 UI 适配完成: 设备 = {deviceType}, 位置 = {targetLayout.anchoredPosition}");
        }

        public RectTransformData GetLayout(bool isIpad)
        {
            return isIpad ? iPadLayout : iPhoneLayout;
        }
        public void SetLayout(bool isIpad, RectTransform rect)
        {
            if (isIpad)
            {
                iPadLayout = new RectTransformData(rect);
            }
            else
            {
                iPhoneLayout = new RectTransformData(rect);
            }
           // Debug.Log($"📌 UIAdaptiveRect: 设置布局为 {(isIpad ? "iPad" : "iPhone")}");
        }
    }
}