using System.IO;
using UnityEditor;
using UnityEditor.Callbacks;
using UnityEditor.SceneManagement;
using UnityEngine;

namespace Aliciza.UXTool
{
    public static class UXDesinUtil
    {
        private static readonly string DesinLayout = Path.Combine(Def_UXGUIPath.ConfigPath, "DesignLayout.wlt");
        private const string InDesignKey = "AlicizaUXTool_InDesign";

        public static bool InDesign
        {
            get => EditorPrefs.GetBool(InDesignKey, false);
            private set => EditorPrefs.SetBool(InDesignKey, value);
        }

        public static event System.Action OnEnterDesignMode;
        public static event System.Action OnExitDesignMode;

        [InitializeOnLoadMethod]
        private static void Initialize()
        {
            EditorApplication.playModeStateChanged -= OnPlayModeStateChanged;
            EditorApplication.playModeStateChanged += OnPlayModeStateChanged;
        }

        private static void OnPlayModeStateChanged(PlayModeStateChange mode)
        {
            if (mode == PlayModeStateChange.EnteredPlayMode && InDesign)
            {
                ExitUIDesinger();
            }
        }


        public static void OpenUIDesinger()
        {
            if (InDesign) return;
            if (File.Exists(DesinLayout))
            {
                InDesign = true;
                EditorUtility.LoadWindowLayout(DesinLayout);
                PrefabStageUtils.OpenDefaultStage();
                ClearProjectSettings();
                OnEnterDesignMode?.Invoke();
            }
            else
            {
                Debug.LogWarning("指定的布局文件不存在: " + DesinLayout);
            }
        }

        public static void ExitUIDesinger()
        {


            if (!string.IsNullOrEmpty(Def_UXGUIPath.DefaultLayoutPath))
            {
                InDesign = false; // 持久化状态
                PrefabStageUtils.ExitStage();
                EditorUtility.LoadWindowLayout(Def_UXGUIPath.DefaultLayoutPath);
                OnExitDesignMode?.Invoke(); // 通知退出设计模式
            }
            else
            {
                Debug.LogWarning("没有找到已保存的布局");
            }
        }

        [InitializeOnLoadMethod]
        [DidReloadScripts]
        private static void RestoreState()
        {
            // 在域重载后检查状态，如果需要恢复到设计模式
            if (InDesign && File.Exists(DesinLayout))
            {
                var currentStage = PrefabStageUtility.GetCurrentPrefabStage();
                if (currentStage != null)
                {
                    return;
                }

                EditorApplication.delayCall += () =>
                {
                    EditorUtility.LoadWindowLayout(DesinLayout);
                    PrefabStageUtils.OpenDefaultStage();
                    OnEnterDesignMode?.Invoke();
                };
            }
        }

        /// <summary>
        /// 清空 Project Settings 中的特定内容
        /// </summary>
        private static void ClearProjectSettings()
        {
            UnityEditor.EditorSettings.prefabUIEnvironment = null;
            UnityEditor.EditorSettings.prefabRegularEnvironment = null;
        }
    }
}