using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using BITKit.UX;
using UnityEditor;
using UnityEditor.UIElements;
using UnityEngine;
using UnityEngine.UIElements;
using Object = UnityEngine.Object;

namespace BITKit.GameEditor
{
	public class ScriptableObjectGroupEditor<T> : EditorWindow where T : ScriptableObject
	{
		protected virtual string AssetsPath => $"Assets/Artists/";
		protected virtual string ExportPathKey => $"{typeof(T).Name}.ExportPath";
		protected virtual string ExportNameKey=> $"{typeof(T).Name}.ExportName";
		protected readonly List<T> List=new();
	
		protected ListView listView { get; private set; }
		protected VisualElement container { get; private set; }
		protected VisualElement _actionContainer { get; private set; }
		protected TextField _newNameField { get; private set; }
		private Button _createButton;

		protected virtual void OnEnable()
		{
			RebuildList();
			
			rootVisualElement.style.flexDirection = FlexDirection.Row;
			
			var css = AssetDatabase.LoadAssetAtPath<StyleSheet>(BITEditorUtils.InspectorPath);
                                                                                     
			rootVisualElement.styleSheets.Add(css);
			
			var leftSlider = rootVisualElement.Create<VisualElement>();
			leftSlider.name = "LeftSlider";

			var toolbarContainer = leftSlider.Create<VisualElement>();
			toolbarContainer.style.alignSelf = Align.Auto;
			toolbarContainer.style.flexDirection = FlexDirection.Row;
			
			var refreshButton = toolbarContainer.Create<Button>();
			refreshButton.text = "刷新";
			refreshButton.clicked += () =>
			{
				RebuildList();
				listView.Rebuild();
			};
			var container = leftSlider.Create<VisualElement>();
			
			var listViewContainer = container.Create<VisualElement>();
			
			var createContainer = listViewContainer.Create<VisualElement>();

			var exportButton = leftSlider.Create<Button>();
			exportButton.text = "导出";
			exportButton.clicked += ExportData;

			_actionContainer = leftSlider.Create<VisualElement>();
			
			createContainer.style.flexDirection = FlexDirection.Row;
			
			var nameField = createContainer.Create<TextField>();
			nameField.style.flexGrow = 1;
			
			_createButton=createContainer.Create<Button>();
			_createButton.text = "创建";
			_createButton.clicked += () => CreateScriptableObject(nameField.value);


			container.style.flexDirection = FlexDirection.Row;
			
			listViewContainer.style.flexDirection = FlexDirection.Column;
			listViewContainer.style.flexGrow = 1;
			
			listViewContainer.Create<Label>().text = $"获取到:{List.Count}个配置";
			listViewContainer.AddToClassList("pa-8");
			
			listView = leftSlider.Create<ListView>();
			listView.makeItem = MakeItem;
			listView.bindItem = BindItem;
			listView.itemsChosen += ItemsChosen;
			listView.style.minWidth = 128;
			listView.style.flexGrow = 1;
			
			listView.itemsSource = List;

			var scroll = rootVisualElement.Create<ScrollView>();
			scroll.name = "Scroll";
			scroll.style.flexGrow = 1;

			{
				var newNameContainer = scroll.Create<GroupBox>();
				newNameContainer.style.flexDirection = FlexDirection.Row;
				var newNameField =_newNameField = newNameContainer.Create<TextField>();
				newNameField.style.flexGrow = 1;

				var confirmButton = newNameContainer.Create<Button>();
				confirmButton.text = "重命名";

				confirmButton.clicked += () =>
				{
					var newName = newNameField.value;

					if (string.IsNullOrEmpty(newName))
					{
						EditorUtility.DisplayDialog("警告", "文件名不能为空", "OK");
						return;
					}

					var selected = listView.selectedItem as Object;
					
					if(!selected)return;	
					
					var path = AssetDatabase.GetAssetPath(selected);

					if (EditorUtility.DisplayDialog("询问", $"确定要重命名{Path.GetFileName(path)}为{newName}", "确定", "取消") is false)
					{
						return;
					}
					
					AssetDatabase.RenameAsset(path, newName);
					
					RebuildList();
				};
			}


			this.container = scroll.Create<GroupBox>();
			
			var pingButton = toolbarContainer.Create<Button>();
			pingButton.text = "Ping";
			pingButton.clicked += () =>
			{
				if (listView.selectedIndex < 0) return;
				var item = List[listView.selectedIndex];
				EditorGUIUtility.PingObject(item);
			};

			//_container.style.flexGrow = 1;

			Debug.Log(
				$"{GetType().Name} 已初始化,从{AssetsPath}获取到{List.Count}个{typeof(T).Name}");
		}

		private void ExportData()
		{
			var path = Environment.CurrentDirectory;

			if (PlayerPrefs.HasKey(ExportPathKey))
			{
				path = PlayerPrefs.GetString(ExportPathKey);
			}
			
			var exportPath = EditorUtility.SaveFilePanel("select path", path, $"{typeof(T).Name}.bytes", "bytes");
			
			if(string.IsNullOrEmpty(exportPath))return;
			
			PlayerPrefs.SetString(ExportPathKey, exportPath);
			PlayerPrefs.Save();
			
			ExportData(exportPath);
			
			BIT4Log.Log<ScriptableObjectGroupEditor<T>>($"导出成功:{exportPath}");
		}
		protected virtual void ExportData(string path)
		{
			throw new NotImplementedException($"暂未实现{typeof(T).Name}的导出功能");
		}

		protected virtual void ItemsChosen(IEnumerable<object> obj)
		{
			var selected = obj.FirstOrDefault() as Object;
			var serializedObject = new SerializedObject(selected);
			BITInspectorExtensions.FillDefaultInspector(container, serializedObject, true);
			container.Bind(serializedObject);
			if (selected)
				_newNameField.SetValueWithoutNotify(selected.name);
		}

		protected virtual VisualElement MakeItem()
		{
			var container = new VisualElement();
			var icon = container.Create<VisualElement>();
			var label = container.Create<Label>();

			icon.name = nameof(VisualElement) + "--0";
			label.name = nameof(Label) + "--0";

			container.style.flexDirection = FlexDirection.Row;
			container.style.alignContent = Align.Center;
			container.style.alignItems = Align.Center;
			
			icon.style.width = 24;
			icon.style.height = 24;
			
			container.AddManipulator(new ContextualMenuManipulator((evt) =>
			{
				evt.menu.AppendAction("复制", Copy, DropdownMenuAction.AlwaysEnabled);
				//evt.menu.AppendAction("Second menu item", (x) => Debug.Log("Second!!!!"), DropdownMenuAction.AlwaysEnabled);
			}));
			return container;

			void Copy(DropdownMenuAction dropdownMenuAction)
			{
				if (container.userData is not ScriptableObject scriptableObject) return;
				var path = AssetDatabase.GetAssetPath(scriptableObject);
				var folder = Path.GetDirectoryName(path)!;
				path = Path.Combine(folder, $"{scriptableObject.name}Copy.asset");

				var newObject = CreateInstance<T>();
				AssetDatabase.CreateAsset(newObject, path);
				
				AssetDatabase.SaveAssets();
				AssetDatabase.Refresh();
				
				RebuildList();
				
				Debug.Log($"复制成功:{path}");
			}
		}
		protected virtual void BindItem(VisualElement arg1, int arg2)
		{
			try
			{
				var item = List[arg2];
				arg1.Q<Label>().text = item.name;
				arg1.userData = item;
			}
			catch (Exception e)
			{
				Debug.LogException(e);
			}
		}
		protected virtual void RebuildList()
		{
			List.Clear();
			var paths = AssetDatabase.FindAssets($"t:{typeof(T).Name}");
			var allItem =
			(
				from path in paths.Select(AssetDatabase.GUIDToAssetPath)
				select AssetDatabase.LoadAssetAtPath<ScriptableObject>(path)
			).ToArray();
			List.AddRange(allItem.Cast<T>());
		}
		
		protected virtual void CreateScriptableObject(string name)
		{
			if (string.IsNullOrEmpty(name))
			{
				name = $"New {typeof(T).Name}";
			}
			
			var path = $"{AssetsPath}{name}.asset";

			if (EditorUtility.DisplayDialog("创建", $"是否创建{name}到{path}?", "是", "否") is false) return;
			
			new DirectoryInfo(Path.GetDirectoryName(path)!).Create();
			
			var item = CreateInstance<T>();
			item.name = name;
			AssetDatabase.CreateAsset(item, path);
			AssetDatabase.SaveAssets();
			AssetDatabase.Refresh();
			
			List.Add(item);
			
			listView.Rebuild();
			
			ItemsChosen(new[] {item});
		}
	}

}