using System;
using System.Collections;
using System.Collections.Generic;
using Sirenix.OdinInspector.Editor;
using UnityEngine;

namespace Ether
{
	public abstract class OdinWindowBase<T> : OdinMenuEditorWindow where T : OdinWindowBase<T>
	{
		protected OdinWindowBase()
		{
			OnInit();
		}

		protected abstract void OnInit();
		
		protected bool SupportsMultiSelect = false; //允许多选
		protected bool DrawSearchToolbar = false; //显示搜索框
		
		protected List<(Type, OdinSubWindowBase)> SubWindows = new List<(Type, OdinSubWindowBase)>();
		protected List<string> SubWindowNames = new List<string>();

		private OdinSubWindowBase selectedSubWindow;

		/// <summary>
		/// 添加子界面
		/// </summary>
		/// <param name="windowName">子界面名称（列表中显示）</param>
		/// <typeparam name="K">子界面类型</typeparam>
		protected void AddSubWindow<K>(string windowName) where K : OdinSubWindowBase
		{
			Type type = typeof(K);
			OdinSubWindowBase subWindow = (OdinSubWindowBase)Activator.CreateInstance(type);
			SubWindowNames.Add(windowName);
			SubWindows.Add((type, subWindow));
		}
		
		protected override OdinMenuTree BuildMenuTree()
		{
			var tree = new OdinMenuTree();
			
			tree.Selection.SupportsMultiSelect = SupportsMultiSelect;
			tree.Config.DrawSearchToolbar = DrawSearchToolbar;

			for (int i = 0; i < SubWindows.Count; i++)
			{
				var subWindowItem = SubWindows[i];
				if (subWindowItem.Item2 != null) 
					continue;
				
				Type type = subWindowItem.Item1;
				OdinSubWindowBase subWindow = (OdinSubWindowBase)Activator.CreateInstance(type);
				subWindowItem.Item2 = subWindow;
			}

			for (int i = 0; i < SubWindows.Count; i++)
			{
				tree.Add(SubWindowNames[i], SubWindows[i].Item2);
			}
			
			tree.Selection.SelectionChanged += (type) =>
			{
				if (tree.Selection.SelectedValue == null)
				{
					return; 
				}

				selectedSubWindow?.OnClose();

				OdinSubWindowBase selectWindow = tree.Selection.SelectedValue as OdinSubWindowBase;
				selectWindow.OnShow();
				selectedSubWindow = selectWindow;
			};

			return tree;
		}
		
		protected override void OnImGUI()
		{
			base.OnImGUI();
            
			if (this.MenuTree.Selection.SelectedValue == null)
			{
				return; 
			}
			OdinSubWindowBase selectWindow = this.MenuTree.Selection.SelectedValue as OdinSubWindowBase;
			selectWindow.OnGUI();
		}

		protected override void OnDestroy()
		{
			selectedSubWindow?.OnClose();
		}
	}
	
}