using System;
using System.Linq;
using BlueWaterProject.Type;
using UnityEngine;
using UnityEngine.AI;

namespace BlueWaterProject
{
    public class MotionSickState : INpcState
    {
        public event Action OnEnterAction;
        private NavMeshAgent agent;
        private InShipMapInfo inShipMapInfo;
        private bool isMovingToToilet;
        private Toilet targetToilet;
        
        public MotionSickState(NavMeshAgent agent, InShipMapInfo inShipMapInfo)
        {
            this.agent = agent;
            this.inShipMapInfo = inShipMapInfo;
        }

        public void OnEnter(NpcStateMachine npcStateMachine)
        {
            var toilets = inShipMapInfo.Toilets;
    
            // 화장실을 NPC와의 거리에 따라 정렬합니다.
            var sortedToilets = toilets.OrderBy(toilet => Vector3.Distance(agent.transform.position, toilet.transform.position)).ToList();

            Toilet availableToilet = null;

            foreach (var toilet in sortedToilets)
            {
                // 사용 가능한 화장실을 찾습니다.
                if (!toilet.IsUsed)
                {
                    availableToilet = toilet;
                    break;
                }
            }

            // 사용 가능한 화장실이 있는 경우
            if (availableToilet != null)
            {
                agent.SetDestination(availableToilet.transform.position);
                agent.stoppingDistance = 0;

                isMovingToToilet = true;
                targetToilet = availableToilet;
                agent.SetDestination(availableToilet.transform.position);
                agent.stoppingDistance = 0;
            }
            else
            {
                npcStateMachine.InstantiateObject(DataManager.Inst.vomit, npcStateMachine.transform.position);
                OnEnterAction?.Invoke();
                npcStateMachine.RestorePreviousState();
            }
        }

        public void OnUpdate(NpcStateMachine npcStateMachine)
        {
            // 화장실로 이동 중이라면
            if (isMovingToToilet)
            {
                // 도착 여부 확인
                if (agent.remainingDistance <= agent.stoppingDistance && !agent.pathPending)
                {
                    // 도착했다면 화장실 사용
                    targetToilet.UseToilet();
                    OnEnterAction?.Invoke();
                    npcStateMachine.RestorePreviousState();

                    // 이동 상태 업데이트
                    isMovingToToilet = false;
                }
            }
        }

        public void OnExit(NpcStateMachine npcStateMachine)
        {
            
        }

        public INpcState Clone()
        {
            return null;
        }
    }
}