using System;
using System.Collections;
using System.Collections.Generic;
using Animancer;
using AYellowpaper.SerializedCollections;
using BITFALL.Hotkey;
using BITKit;
using BITKit.Entities;
using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.InputSystem.Interactions;

namespace BITFALL.Animate
{
	public sealed class EntityEmojiPlayer : EntityBehavior
	{
		[SerializeField]private SerializedDictionary<string, AnimationClip> animationClips;

		[SerializeField] private Optional<string[]> initialEmojis;
		
		[SerializeField]private AnimancerComponent animancerComponent;
		
		[SerializeField] private InputActionReference cancelAction;
		
		[Inject]
		private IHotkeyCollection _hotkeyCollection;
		[Inject]
		private IEntityOverride _override;
		[Inject]
		private IEntityMovement _movement;

		[Inject] private IHealth _health;
		private readonly List<string> activeEmojis = new();
		private AnimancerState _currentAnimancerState;

		private readonly InputActionGroup _inputActionGroup = new();
		
		public override void OnStart()
		{
			base.OnStart();
			
			_health.OnSetAlive += OnSetAlive;
			
			_inputActionGroup.RegisterCallback(cancelAction, Cancel);

			if (initialEmojis.Allow)
			{
				activeEmojis.AddRange(initialEmojis.Value);
			}

			foreach (var x in activeEmojis)
			{
				_hotkeyCollection.Register(new HotkeyProvider()
				{
					Name = x,
					Description = $"播放表情:{x}",
					OnPerform = Play,
					Enabled = true,
				});
				continue;
				void Play()
				{
					if (_movement.IsGrounded is false) return;
					var state = _currentAnimancerState = animancerComponent.Play(animationClips[x]);
					_currentAnimancerState.Events.OnEnd += OnEnd;
					_override.AddOverride(this);
					return;
					void OnEnd()
					{
						state.Events.OnEnd = null;
						_override.RemoveOverride(this);
						state.Stop();
						if (state == _currentAnimancerState)
						{
							_currentAnimancerState = null;
						}
					}
				}
			}
			
			_inputActionGroup.allowInput.SetElements(_health,_health.IsAlive);
		}

		private void Cancel(InputAction.CallbackContext obj)
		{
			switch (obj)
			{
				case {interaction:PressInteraction, performed:true}:
					StopInternal();
					break;
			}
		}

		private void OnSetAlive(bool obj)
		{
			_inputActionGroup.allowInput.SetElements(this,obj);
			if (obj) return;
			StopInternal();
		}
		
		
		private void StopInternal()
		{
			_currentAnimancerState?.Events.OnEnd?.Invoke();
		}
	}

}