using System;
using System.Collections;
using System.Collections.Generic;
using BITFALL.Items.Melee;
using BITFALL.Combat;
using BITFALL.Player.Movement;
using BITKit;
using BITKit.Entities;
using BITKit.Entities.Melee;
using BITKit.StateMachine;
using Cysharp.Threading.Tasks;
using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.InputSystem.Interactions;

namespace BITFALL.Entities.Equipment.Melee
{
	public interface IPlayerMeleeControllerState : IState
	{
	}
	public abstract class PlayerMeleeControllerState : IPlayerMeleeControllerState
	{
		[SerializeField] protected MeleeController my;

		public virtual bool Enabled { get; set; }
		public virtual void Initialize()
		{
			my.Entity.Inject(this);
		}

		public virtual void OnStateEntry(IState old)
		{
		}

		public virtual void OnStateUpdate(float deltaTime)
		{
		}

		public virtual void OnStateExit(IState old, IState newState)
		{
		}
	}
	public sealed class MeleeController : StateWeaponController<IPlayerMeleeControllerState>
	{
		[Header(Constant.Header.Input)]
		[SerializeField] internal InputActionReference attackAction;
		[SerializeField] internal InputActionReference blockAction;

		[Header(Constant.Header.Gameobjects)]
		[SerializeField] private Transform velocityReference;
		
		[Header(Constant.Header.Services)]
		[SerializeReference,SubclassSelector] private IMeleeService _meleeService;
		
		public ScriptableMelee melee => scriptableItem as ScriptableMelee;

		private Vector3 _velocity;
		private Vector3 _lastPosition;
		
		[Inject]
		internal IEntityMovement _movement;
		[Inject(true)]
		internal IPlayerMovement _playerMovement;
		[Inject]
		internal IHealth _health;
		
		public override void OnAwake()
		{
			base.OnAwake();
		

			if (_playerMovement is not null)
				_health.OnDamageFactory += OnDamageFactory;
		}
		

		private int OnDamageFactory(DamageMessage arg1, int arg2)
		{
			if (Enabled is false || arg1.Initiator is null) return arg2;
			if (CurrentState is not Blocking blocking) return arg2;
			var combat = arg1.Initiator.Get<IMeleeCombat>();
			if (combat is null) return arg2;

			if (blocking.AllowBlockStun && _playerMovement.Stamina >= melee.BlockStaminaCost)
			{
				arg2 =0;
				combat.HitStun();
				
				_playerMovement.Stamina -= melee.BlockStaminaCost*0.5f;
			}
			else
			{
				// if (_playerMovement.Stamina > melee.BlockStaminaCost)
				// {
				// 	animator.Play(BITConstant.Player.BlockStun);
				// 	arg2 /= 3;
				// }
				// else
				// {
				// 	animator.Play(BITConstant.Player.BlockBreak);
				// 	arg2 /= 2;
				// }
				_playerMovement.Stamina -= melee.BlockStaminaCost;
			}
			
			
			return arg2;
		}
		public override void Entry()
		{
			base.Entry();
			
			TransitionState<Draw>();
		}
		public override void Exited()
		{
			base.Exited();
			_movement.ExecuteCommand<PlayerPauseRunCommand>(new(this,false));
			
			TransitionState<Empty>();
		}

		public override void OnUpdate(float deltaTime)
		{
			base.OnUpdate(deltaTime);
			var position = velocityReference.position;
			_velocity = (position - _lastPosition).normalized;
			_lastPosition = position;
			UpdateState(deltaTime);
			
			_movement.ExecuteCommand<PlayerPauseRunCommand>(new(this,CurrentState is not Idle));
		}

		public override void AnimationEvent(string eventName)
		{
			base.AnimationEvent(eventName);
			switch (eventName)
			{
				case BITConstant.Player.Attack:
				case BITConstant.Player.Melee:
					_meleeService.Melee(new MeleeCommand()
					{
						Damage =melee.MeleeDamage,
						Force = melee.MeleeForce,
						Forward = transform.forward,
						Limit = 1,
						PlayerId = Entity.Id,
						Position = transform.position,
						Range = melee.MeleeRange,
					});
					break;
				case BITConstant.Player.HeavyAttack:
					_playerMovement.Stamina -= melee.HeavyAttackStaminaCost;
					_meleeService.Melee(new MeleeCommand()
					{
						Damage =melee.HeavyMeleeDamage,
						Force = melee.HeavyMeleeForce,
						Forward = transform.forward,
						Limit = 1,
						PlayerId = Entity.Id,
						Position = transform.position,
						Range = melee.HeavyMeleeRange,
					});
					break;
			}
		}
	}

}