using UnityEngine;
using UnityEngine.UI;
using UnityEngine.AddressableAssets;
using UnityEngine.ResourceManagement.AsyncOperations;
using System.Collections.Generic;
using UnityEngine.SceneManagement;
namespace AdaptUI
{
    public class AddressableImageLoader : MonoBehaviour
    {
        public enum DeviceType { Auto, iPhone, iPad }
        [Header("设备类型 (Auto = 自动检测)")]
        public DeviceType selectedDevice = DeviceType.Auto;
        public string resourceKey = "LoginBG"; // Addressable 资源 Key

        private void Awake()
        {
            LoadImage(); // 运行时加载
                         // SceneManager.sceneLoaded += OnSceneLoaded; // 监听场景切换
        }

        private void OnDestroy()
        {
            //SceneManager.sceneLoaded -= OnSceneLoaded;
        }

        // private void OnSceneLoaded(Scene scene, LoadSceneMode mode)
        // {
        //     Debug.Log($"📌 [Runtime] 场景切换: {scene.name}, 重新加载 UI");
        //     LoadImage();
        // }

        public void LoadImage()
        {
            if (string.IsNullOrEmpty(resourceKey))
            {
                Debug.LogWarning("⚠️ 资源 Key 为空，请在 Inspector 面板中输入 Key！");
                return;
            }

            string label = GetDeviceLabel();
            Debug.Log($"📌 加载资源 Key：{resourceKey}，Label：{label}");

            Addressables.LoadAssetsAsync<Sprite>(new List<object> { resourceKey, label }, null, Addressables.MergeMode.Intersection)
                .Completed += OnSpriteLoaded;
        }

        private void OnSpriteLoaded(AsyncOperationHandle<IList<Sprite>> handle)
        {
            if (handle.Status == AsyncOperationStatus.Succeeded && handle.Result.Count > 0)
            {
                ApplySprite(handle.Result[0]);
            }
            else
            {
                Debug.LogError("⚠️ 图片加载失败或未找到匹配的资源！");
            }
        }

        private void ApplySprite(Sprite sprite)
        {
            Image image = GetComponent<Image>();
            if (image != null) image.sprite = sprite;
        }

        // private string GetDeviceLabel()
        // {
        //     if (selectedDevice == DeviceType.iPad) return "iPad";
        //     if (selectedDevice == DeviceType.iPhone) return "iPhone";

        //     float aspectRatio = (float)Screen.width / Screen.height;
        //     Debug.Log($"📌 运行时计算屏幕分辨率: width = {Screen.width}, height = {Screen.height}, aspectRatio = {aspectRatio}");

        //     return aspectRatio < 1.4f ? "iPad" : "iPhone";
        // }
        private string GetDeviceLabel()
        {
            if (selectedDevice == DeviceType.iPad) return "iPad";
            if (selectedDevice == DeviceType.iPhone) return "iPhone";

            DeviceTypeHelper.DeviceType detectedType = DeviceTypeHelper.DetectDeviceType();
           // Debug.Log($"📌 运行时设备检测结果: {detectedType}");

            return detectedType == DeviceTypeHelper.DeviceType.iPad ? "iPad" : "iPhone";
        }
    }
}