#if UNITY_EDITOR

using System.Collections.Generic;
using Mountools.Tools;
using UnityEditor;
using UnityEngine;
using UnityEngine.SceneManagement;

namespace Mountools.LoadingScreen
{
    public class LoadingScreenManager : EditorWindow
    {
#if MT_L_CHINESE
        private static readonly string WindowName = "加载画面管理器";
#endif
#if MT_L_ENGLISH
        private static readonly string WindowName = "Loading Screen Manager";
#endif
        private static readonly Vector2 WindowMinSize = new(200, 400);
        private static readonly Vector2 WindowMaxSize = new(400, 800);

        private LoadingScreenPresets _presets;
        private Vector2 _scroll;
        private string _search = "";
        private int _select;

        private void OnDrawWindow()
        {
            // 加载画面
            var loadingScreen = LoadingScreen.GetLoadingScreen();

            EditorGUI.BeginDisabledGroup(
                loadingScreen != null && loadingScreen.isLoading // 若正在加载
            );
            {
                // 搜索
                _search = EditorGUILayout.TextField("", _search, "SearchTextField");
            
                // 转场列表
                _scroll = EditorGUILayout.BeginScrollView(_scroll, "OL box NoExpand");
                {
                    foreach (var screen in _presets.loadingScreens)
                    {
                        if (string.IsNullOrEmpty(_search.Trim()) || 
                            screen.name.Trim().ToLower().Contains(_search.Trim().ToLower())
                           )
                        {
                            if (GUILayout.Button(screen.name, "TE toolbarbutton"))
                                LoadingScreenPresets.ChangePreset(screen);
                            EditorGUILayout.Space(3);
                        }
                    }
            
                }
                EditorGUILayout.EndScrollView();
            
            
            }
            EditorGUI.EndDisabledGroup();
            
            
            // 场景跳转
            var sceneCount = SceneManager.sceneCountInBuildSettings;
            var scenePathList = new List<string>();
            for (var i = 0; i < sceneCount; i ++)
            {
                scenePathList.Add(SceneUtility.GetScenePathByBuildIndex(i));
            }

            if (loadingScreen != null)
            {
                EditorGUI.BeginDisabledGroup(
                    ! Application.isPlaying // 不在游玩
                );
                {
                    EditorGUILayout.BeginHorizontal();
                    {
                        _select = EditorGUILayout.Popup("", _select, scenePathList.ToArray());

                        // 加载场景
                        EditorGUI.BeginDisabledGroup(
                            SceneManager.GetActiveScene().path == scenePathList[_select] || // 需要跳转的为当前场景
                            loadingScreen.isLoading // 当前场景正在加载
                        );
                        {
                            if (GUILayout.Button(MountoolsLanguage.Lang("加载场景", "Load Scene"),
                                    "TE toolbarbutton"))
                            {
                                LoadingScreen.LoadScene(scenePathList[_select]);
                            }
                        }
                        EditorGUI.EndDisabledGroup();
                        
                        // 复制代码
                        var copyText = $"LoadingScreen.LoadScene(\"{scenePathList[_select]}\");";
                        EditorGUI.BeginDisabledGroup(copyText == EditorGUIUtility.systemCopyBuffer);
                        {
                            if (GUILayout.Button(MountoolsLanguage.Lang("复制代码", "Copy Code"), 
                                    "TE toolbarbutton"))
                            {
                                EditorGUIUtility.systemCopyBuffer = copyText;
                            }
                        }
                        EditorGUI.EndDisabledGroup();
                    }
                    EditorGUILayout.EndHorizontal();
                }
                EditorGUI.EndDisabledGroup();
            }
        }

        public static void OpenWindow()
        {
            var window = GetWindow<LoadingScreenManager>(WindowName);
            
            window.minSize = WindowMinSize;
            window.maxSize = WindowMaxSize;

            window._presets = LoadingScreenPresets.GetPresets();
            
            window.Show();
        }

        private void OnGUI() { OnDrawWindow(); }
    }
}

#endif