using System.Collections;
using UnityEngine;
using UnityEngine.AddressableAssets;
using UnityEngine.InputSystem;
using UnityEngine.Serialization;

namespace DDD
{
    public class RestaurantPlayer : MonoBehaviour
    {
        #region Variables
        
        private RestaurantPlayerDataSo _playerData;
        private RestaurantPlayerView _playerView;

        private InputAction _moveAction;
        private InputAction _dashAction;
        private Coroutine _dashInstance;
        
        private Vector3 _inputDirection;
        private Vector3 _currentDirection = Vector3.back;

        public bool IsMoving;
        public bool IsDashing;
        public bool IsDashCoolDownActive;
        
        private float _finalSpeed;
        
        private PlayerStateMachine _stateMachine;

        #endregion

        // Unity events

        #region Unity events

        private void Awake()
        {
            _playerData = Addressables.LoadAssetAsync<RestaurantPlayerDataSo>("RestaurantPlayerDataSo").WaitForCompletion();
            _playerView = GetComponent<RestaurantPlayerView>();
        }

        private void Start()
        {
            _moveAction = KeyManager.Instance.GetAction(InputActionMaps.Restaurant, RestaurantActions.Move);
            _dashAction = KeyManager.Instance.GetAction(InputActionMaps.Restaurant, RestaurantActions.Dash);

            _moveAction.performed += OnMove;
            _moveAction.canceled += OnMove;
            _dashAction.performed += OnDash;

            _stateMachine = new PlayerStateMachine();
            ChangeState(new IdleState(this, _playerView));
        }

        //public CellManager cellManager;
        private void Update()
        {
            _stateMachine.Update();
            
            FlipVisualLook();
            
            //UpdateCell
            //cellManager.SetupCell(transform.position);
        }

        private void FixedUpdate()
        {
            if (!CanMove()) return;

            Move();
        }

        private void OnDestroy()
        {
            _moveAction.performed -= OnMove;
            _moveAction.canceled -= OnMove;
            _dashAction.performed -= OnDash;
        }

        #endregion

        // Methods
        #region Methods
        
        public void SetCurrentDirection(Vector3 normalDirection)
        {
            if (normalDirection == Vector3.zero) return;

            _currentDirection = normalDirection;
        }
        
        private void FlipVisualLook()
        {
            Vector3 localScale = _playerView.GetLocalScale();
            localScale.x = _currentDirection.x switch
            {
                > 0.01f => -Mathf.Abs(localScale.x),
                < -0.01f => Mathf.Abs(localScale.x),
                _ => localScale.x
            };
            _playerView.SetLocalScale(localScale);
        }
        
        public void OnMove(InputAction.CallbackContext context)
        {
            var movementInput = _moveAction.ReadValue<Vector2>();
            _inputDirection = new Vector3(movementInput.x, 0, movementInput.y).normalized;
        }
        
        public bool CanMove()
        {
            return _playerData.IsMoveEnabled && !IsDashing;
        }

        public void Move()
        {
            SetCurrentDirection(_inputDirection);
            IsMoving = _inputDirection != Vector3.zero;

            var finalVelocity = _inputDirection * _playerData.MoveSpeed;
            _playerView.SetVelocity(finalVelocity);
        }
        
        public void OnDash(InputAction.CallbackContext context)
        {
            if (!CanDash()) return;
            
            Dash();
        }
        
        public bool CanDash()
        {
            return _playerData.IsDashEnabled && !IsDashing && !IsDashCoolDownActive;
        }
        
        public void Dash()
        {
            Utils.StartUniqueCoroutine(this, ref _dashInstance, DashCoroutine());
        }
        
        private IEnumerator DashCoroutine()
        {
            IsDashing = true;
            IsDashCoolDownActive = true;
            _playerView.PlayDashParticle();
        
            AudioManager.Instance.PlaySfx(_playerData.DashSfxName);
        
            var dashDirection = _inputDirection;
            if (dashDirection == Vector3.zero)
            {
                dashDirection = _currentDirection;
            }
        
            var elapsedTime = 0f;
            while (elapsedTime <= _playerData.DashTime)
            {
                var finalVelocity = dashDirection * _playerData.DashSpeed;
                _playerView.SetVelocity(finalVelocity);
        
                elapsedTime += Time.fixedDeltaTime;
                yield return new WaitForFixedUpdate();
            }
        
            EndDash(_playerData.DashCooldown);
        }
        
        public void EndDash(float dashCooldown = float.PositiveInfinity)
        {
            Utils.EndUniqueCoroutine(this, ref _dashInstance);
            _playerView.SetVelocity(Vector3.zero);
            IsDashing = false;
        
            if (float.IsPositiveInfinity(dashCooldown))
            {
                dashCooldown = _playerData.DashCooldown;
            }
        
            // TODO : ui 연동
            StartCoroutine(Utils.CoolDownCoroutine(dashCooldown, () => IsDashCoolDownActive = false));
        }
        
        public void ChangeState(IStateMachine stateMachine)
        {
            _stateMachine.ChangeState(stateMachine);
        }
        
        #endregion
    }
}