using System;
using Unity.Behavior;
using UnityEngine;
using Action = Unity.Behavior.Action;
using Unity.Properties;
using Colosseum.Combat;
using Colosseum.Enemy;

[Serializable, GeneratePropertyBag]
[NodeDescription(name: "FindTarget", story: "[타겟] 탐색", category: "Action", id: "bb947540549026f3c5625c6d19213311")]
public partial class FindTargetAction : Action
{
    [SerializeReference]
    public BlackboardVariable<GameObject> Target;
    
    [SerializeReference]
    public BlackboardVariable<string> Tag = new BlackboardVariable<string>("Player");

    protected override Status OnStart()
    {
        if (Tag.Value == null || string.IsNullOrEmpty(Tag.Value))
        {
            return Status.Failure;
        }

        // 모든 타겟 후보 검색
        GameObject[] candidates = GameObject.FindGameObjectsWithTag(Tag.Value);
        
        if (candidates == null || candidates.Length == 0)
        {
            return Status.Failure;
        }

        EnemyBase enemy = GameObject.GetComponent<EnemyBase>();
        if (enemy != null && enemy.UseThreatSystem)
        {
            GameObject threatTarget = enemy.GetHighestThreatTarget(Target?.Value, Tag.Value);
            if (threatTarget != null)
            {
                Target.Value = threatTarget;
                return Status.Success;
            }
        }

        // 사망하지 않은 타겟 찾기
        foreach (GameObject candidate in candidates)
        {
            IDamageable damageable = candidate.GetComponent<IDamageable>();
            
            // IDamageable이 없거나 살아있는 경우 타겟으로 선택
            if (damageable == null || !damageable.IsDead)
            {
                Target.Value = candidate;
                return Status.Success;
            }
        }

        // 살아있는 타겟이 없음
        return Status.Failure;
    }
}