using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Security.Permissions;
using AYellowpaper.SerializedCollections;
using BITFALL.Entities;
using BITFALL.Entities.Equipment;
using BITKit.Animations;
using UnityEngine;

namespace BITKit.Entities.Animation
{
	public sealed class EntitiesAnimationController : EntityBehavior
	{
		[SerializeField] private UnityAnimator unityAnimator;
		[SerializeField] private SerializedDictionary<string, RuntimeAnimatorController> animatorControllers;
		[Inject]
		private IEntityEquipment _entityEquipment;
		[Inject(true)]
		private IKnockdown _knockdown;
		[Inject]
		private IHealth _health;
		
		private RuntimeAnimatorController _initialRuntimeAnimatorController;

		private readonly DoubleBuffer<RuntimeAnimatorController> _runtimeAnimatorControllerBuffer = new();
		public override void OnAwake()
		{
			base.OnAwake();
			_entityEquipment.OnEquipAddressable += OnEquip;
			_entityEquipment.OnUnEquipAddressable += UnEquip;
			_initialRuntimeAnimatorController = unityAnimator.animator.runtimeAnimatorController;
			
		}

		private void UnEquip(string obj)
		{
			if (_knockdown is not null && _knockdown.IsKnockdown) return;
			if (_health.IsAlive is false) return;
			if (animatorControllers.Values.Any(x => x == unityAnimator.animator.runtimeAnimatorController))
				_runtimeAnimatorControllerBuffer.Release(_initialRuntimeAnimatorController);
		}

		public override void OnLateUpdate(float deltaTime)
		{
			if(_runtimeAnimatorControllerBuffer.TryGetRelease(out var controller))
			{
				if (controller is AnimatorOverrideController overrideController)
				{
					controller = overrideController.CopyAndFillMissingContent(_initialRuntimeAnimatorController as AnimatorOverrideController);
				}
				unityAnimator.animator.runtimeAnimatorController = controller;
				unityAnimator.animator.Update(deltaTime);
			}
		}

		private void OnEquip(string equipName)
		{
			if (_knockdown is not null && _knockdown.IsKnockdown) return;
			_runtimeAnimatorControllerBuffer.Release(animatorControllers.TryGetValue(equipName, out var controller)
				? controller
				: _initialRuntimeAnimatorController);
		}
	}

}