using UnityEngine;
using UnityEngine.AI;

public class NormalMonster : MonsterClass
{
    [Header("전투 설정")]
    [SerializeField] private float attackRange = 2f;
    [SerializeField] private float attackDelay = 1.5f;

    private float lastAttackTime;

    [Header("공격 / 이동 애니메이션")]
    [SerializeField] private string[] attackAnimations = { "Monster_Attack_1" };
    [SerializeField] private string Monster_Walk = "Monster_Walk";

    [Header("AI 상세 설정")]
    [SerializeField] private float stopBuffer = 0.3f;
    [SerializeField] private float patrolRadius = 5f;
    [SerializeField] private float patrolInterval = 2f;

    private float nextPatrolTime;
    private float repathInterval = 0.3f;
    private float nextRepathTime;
    private int attackIndex;
    private bool isPlayerInZone;

    protected override void Init()
    {
        if (agent != null) agent.stoppingDistance = attackRange - 0.4f;
        if (animator != null) animator.applyRootMotion = false;
    }

    protected override void ExecuteAILogic()
    {
        // 공격 중(isAttacking)이면 AI 생각 멈춤 -> 부들부들 방지!
        if (isHit || isAttacking || isResting) return;

        float distance = Vector3.Distance(transform.position, playerTransform.position);
        if (isPlayerInZone || distance <= attackRange * 2f) HandlePlayerTarget();
        else Patrol();

        UpdateMovementAnimation();
    }

    void HandlePlayerTarget()
    {
        float distance = Vector3.Distance(transform.position, playerTransform.position);
        if (distance <= attackRange - stopBuffer) TryAttack();
        else if (Time.time >= nextRepathTime)
        {
            if (agent.isOnNavMesh) agent.SetDestination(playerTransform.position);
            nextRepathTime = Time.time + repathInterval;
        }
    }

    void TryAttack()
    {
        if (Time.time < lastAttackTime + attackDelay) return;
        lastAttackTime = Time.time;

        string attackName = attackAnimations[attackIndex];
        attackIndex = (attackIndex + 1) % attackAnimations.Length;

        // ⭐ [핵심 수정] 애니메이션 이벤트 기다리지 말고, 즉시 "공격 상태"로 전환!
        // 이걸 해야 AI가 이동하려는 시도를 멈춥니다.
        isAttacking = true;

        // 이동 멈춤 (미끄러짐 방지)
        if (agent.isOnNavMesh)
        {
            agent.isStopped = true;
            agent.velocity = Vector3.zero;
        }

        animator.Play(attackName, 0, 0f);
    }

    void UpdateMovementAnimation()
    {
        if (isAttacking || isHit || isResting) return;
        if (agent.velocity.magnitude < 0.1f) animator.Play(Monster_Idle);
        else animator.Play(Monster_Walk);
    }

    void Patrol()
    {
        if (Time.time < nextPatrolTime) return;
        Vector3 randomPoint = transform.position + new Vector3(Random.Range(-patrolRadius, patrolRadius), 0, Random.Range(-patrolRadius, patrolRadius));
        if (NavMesh.SamplePosition(randomPoint, out NavMeshHit hit, 3f, NavMesh.AllAreas))
            if (agent.isOnNavMesh) agent.SetDestination(hit.position);
        nextPatrolTime = Time.time + patrolInterval;
    }

    private void OnTriggerEnter(Collider other) { if (other.CompareTag("Player")) isPlayerInZone = true; }
    private void OnTriggerExit(Collider other) { if (other.CompareTag("Player")) isPlayerInZone = false; }
}