using System;
using System.Linq;
using BITKit.Mod;
using BITKit.UX.Hotkey;
using Cysharp.Threading.Tasks;
using UnityEngine;
using UnityEngine.UIElements;

namespace BITKit.UX
{
	public class UXRadialMenu : UIToolKitPanel
	{
		protected override string DocumentPath => "ui_radial_menu";
		public override bool CloseWhenClickOutside => true;
		public override bool AllowCursor => true;
		private VisualTreeAsset _template;
		
		[UXBindPath("radialMenu-container")]
		private VisualElement _container;
		[UXBindPath("info-label")]
		private Label _infoLabel;
		
		public IHotkeyCollection HotkeyCollection { get; set; }

		public UXRadialMenu(IUXService uxService) : base(uxService)
		{
			OnInitiatedAsync += InitiatedAsync;
		}
		
		private async UniTask InitiatedAsync()
		{
			_container.Clear();
			
			_template =await ModService.LoadAsset<VisualTreeAsset>("ui_radial_menu-template");
		}
		protected override void OnPanelEntry()
		{
			base.OnPanelEntry();
			
			_infoLabel.text = "选择快速动作";

			if (HotkeyCollection is null)
			{
				_infoLabel.text = "<color=yellow>没有快速动作</color>";
				return;
			}

			var count = HotkeyCollection.Hotkeys.Count();

			if (count is 0)
			{
				_infoLabel.text = "<color=yellow>目前没有快速动作</color>";
			}
			
			for (var i = 0; i < count; i++)
			{
				var hotkey = HotkeyCollection.Hotkeys.ElementAt(i);
				
				var angle = 360 / count * i;
				var pos = Quaternion.Euler(0, 0, angle) * Vector3.up * 384;
				pos.y *= 0.64f;
				var container = _container.Create<VisualElement>(_template.CloneTree);

var button = 	container.Get<Button>();
			button.text = hotkey.Name;
			button.focusable = false;
			button.clickable = hotkey.HoldDuration is 0 ? new Clickable(OnClick) : null;

			container.style.position = Position.Absolute;
			container.transform.position = pos;
			
				container.SetEnabled(hotkey.Enabled);
				container.RegisterCallback<PointerOverEvent>(OnMouseOver);
				
				continue;
				void OnClick()
				{
					if (!hotkey.Enabled) return;
					if (hotkey.OnPerform is not null)
					{
						try
						{
							hotkey.OnPerform();
						}
						catch (Exception e)
						{
							Debug.LogException(e);
						}
					}
					UXService.Return();
				}
				void OnMouseOver(PointerOverEvent evt)
				{
					_infoLabel.text = hotkey.Description;
				}
			}
		}
		protected override void OnPanelExit()
		{
			base.OnPanelExit();
			
			_container.Clear();
		}
	}
}