using System;
using System.Collections;
using UnityEngine;
using UnityEngine.AI;
using Random = UnityEngine.Random;

// ReSharper disable once CheckNamespace
namespace BlueWaterProject
{
    public class UsuallyPointState : INpcState
    {
        private NavMeshAgent agent;
        private Transform[] usuallyPoints;
        private int destPoint;
        private Vector3 lastPosition;
        private Vector3 localScale;
        private float waitTime = 5f;
        private bool isWaiting = false;
        private Transform visualLook;
        private bool isIdle = true;

        public UsuallyPointState(NavMeshAgent agent, Transform[] usuallyPoints, Transform visualLook)
        {
            this.agent = agent;
            this.usuallyPoints = usuallyPoints;
            this.visualLook = visualLook;
        }

        public void OnEnter(NpcStateMachine npcStateMachine)
        {
            isIdle = true;
            agent.updateRotation = false;
            //localScale = agent.transform.localScale;
            localScale = visualLook.localScale;
            lastPosition = agent.transform.position;
            GoToNextPoint();
        }

        public void OnUpdate(NpcStateMachine npcStateMachine)
        {
            if(isIdle == false) return;
            var moveDirection = agent.transform.position - lastPosition;
            if (moveDirection.x < 0)
            {
                localScale.x = Mathf.Abs(localScale.x) * -1;
            }
            else if (moveDirection.x > 0)
            {
                localScale.x = Mathf.Abs(localScale.x);
            }

            visualLook.localScale = localScale;
            lastPosition = agent.transform.position;

            if (!agent.pathPending && agent.remainingDistance < 1f)
            {
                if (!isWaiting)
                {
                    // 랜덤한 대기 시간 설정
                    waitTime = UnityEngine.Random.Range(3f, 10f);
                    isWaiting = true;

                    // NpcStateMachine 또는 Npc 클래스에서 Coroutine을 시작
                    npcStateMachine.StartWaitCoroutine(waitTime, this);
                }
            }
        }
        
        public void EndWait()
        {
            isWaiting = false;
            GoToNextPoint();
        }

        public void OnExit(NpcStateMachine npcStateMachine)
        {
            isIdle = false;
        }

        public INpcState Clone()
        {
            var newState = new UsuallyPointState(agent, usuallyPoints, visualLook);
            newState.destPoint = this.destPoint; // 이전 목적지를 복제
            return newState;
        }

        private void GoToNextPoint()
        {
            if (usuallyPoints.Length == 0) return;
            destPoint = Random.Range(0, usuallyPoints.Length);
            agent.destination = usuallyPoints[destPoint].position;
        }
        
        private IEnumerator WaitAndGoToNextPoint()
        {
            var waitTime = Random.Range(3f, 10f);
            yield return new WaitForSeconds(waitTime);
            GoToNextPoint();
        }
    }
}