using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using BITKit;
using BITKit.CommandPattern;
using BITKit.Mod;
using BITKit.UX;
using UnityEngine;
using UnityEngine.UIElements;

namespace BITFactory.Cutting
{
	public class UXCuttingTool : MonoBehaviour
	{
		[SerializeField] private UIDocument document;
		
		[SerializeReference,SubclassSelector] private ICuttingTool cuttingTool;

		[UXBindPath("commands-container")]
		private VisualElement _commandsContainer;
		[UXBindPath("export-button")]
		private Button exportButton;
		[UXBindPath("clear-button")]
		private Button clearButton;
		[UXBindPath("undo-button")]
		private Button undoButton;
		
		private void Start()
		{
			UXUtils.Inject(this);
			
			_commandsContainer.Clear();
			
			cuttingTool.OnExecute += OnExecute;
			cuttingTool.OnUndo += OnUndo;
			cuttingTool.OnClear += OnClear;
			cuttingTool.OnRelease += OnRelease;
			
			exportButton.clicked += cuttingTool.Release;
			clearButton.clicked += cuttingTool.Clear;
			undoButton.clicked += cuttingTool.Undo;
		}


		private static void OnRelease(ICommand[] commands)
		{
			var stringBuilder = new System.Text.StringBuilder();
			foreach (var x in commands.OfType<ICuttingCommand>())
			{
				stringBuilder.AppendLine(x.Name);
			}
			var value = stringBuilder.ToString();
			Alert.Print(new BITKit.UX.Internal.Alert()
			{
				message =ModService.Mods.Length>0 ? "已安装Mod,其他程序正在处理数据" :value.Length>1024 ?"数据过长,请复制到剪贴板查看": value,
				OnConfirm = Copy,
				title = "已命令,按[确定]复制到剪切板"
			});
			return;
			void Copy()
			{
				GUIUtility.systemCopyBuffer = stringBuilder.ToString();
			}
		}

		private void OnClear(ICommand obj)
		{
			_commandsContainer.Clear();
		}

		private void OnUndo(ICommand obj)
		{
			throw new NotImplementedException();
		}
		private void OnExecute(ICommand obj)
		{
			if (obj is not ICuttingCommand command) return;
			
			var button = _commandsContainer.Create<Button>();
			
			button.text = command.Name;
			button.clicked += Undo;

			return;

			void Undo()
			{
				cuttingTool.Trace(obj);
			}
		}
	}
}