using System;
using BlueWater.Players.Tycoons;
using Pathfinding;
using UnityEngine;
using Random = UnityEngine.Random;

namespace BlueWater.Enemies
{
    public class AiMovement : MonoBehaviour
    {
        // Variables
        #region Variables
        
        private IAstarAI _iAstarAi;
        
        #endregion
        
        // Unity events
        #region Unity events
        
        private void Awake()
        {
            InitializeComponents();
            StopMove();
        }

        #endregion

        // Initialize methods
        #region Initialize methods
        
        private void InitializeComponents()
        {
            _iAstarAi = GetComponent<IAstarAI>();
        }
        
        #endregion
        
        // Methods
        #region Methods
        
        public void EnableMove()
        {
            if (_iAstarAi == null) return;

            _iAstarAi.isStopped = false;
            _iAstarAi.canMove = true;
        }
        
        public void StopMove()
        {
            if (_iAstarAi == null) return;

            _iAstarAi.isStopped = true;
            _iAstarAi.canMove = false;
            _iAstarAi.SetPath(null);
        }

        public void Move(Vector3 position)
        {
            if (_iAstarAi == null) return;

            _iAstarAi.destination = position;
            EnableMove();
        }

        public void MoveTarget(Collider target)
        {
            if (!target)
            {
                StopMove();
                return;
            }

            Move(target.transform.position);
        }
        
        public Vector3 SetRandomPoint()
        {
            if (_iAstarAi == null) throw new Exception("AstarAi 오류");
            
            var randomFactor = Random.Range(0.2f, 0.8f);
            return Vector3.Lerp(_iAstarAi.position, _iAstarAi.destination, randomFactor);
        }
        
        public void Teleport(Vector3 position)
        {
            _iAstarAi?.Teleport(position);
        }

        public bool HasReachedDestination()
        {
            if (_iAstarAi == null) return false;
            if (_iAstarAi.pathPending) return false;
            
            var distanceToDestination = Vector3.Distance(_iAstarAi.position, _iAstarAi.destination);
            return distanceToDestination < 0.5f && _iAstarAi.reachedEndOfPath;
        }

        public void SetMoveSpeed(float speed)
        {
            if (_iAstarAi == null) return;
            
            _iAstarAi.maxSpeed = speed;
        }
        
        public bool IsPositionMovable(Vector3 endPosition)
        {
            var nearestNode = AstarPath.active.GetNearest(endPosition).node;
            return nearestNode != null && nearestNode.Walkable;
            
            // var startNode = AstarPath.active.GetNearest(startPosition).node;
            // var endNode = AstarPath.active.GetNearest(endPosition).node;
            //
            // return PathUtilities.IsPathPossible(startNode, endNode);
        }
        
        #endregion
    }
}