using UnityEngine;
using BaseGames.Combat;
using BaseGames.Core;
using BaseGames.Core.Pool;

namespace BaseGames.Enemies
{
    /// <summary>
    /// 远程敌人。重写 <see cref="EnemyBase.SpawnProjectile"/> 以从对象池生成抛射物。
    /// Behavior Designer 任务通过调用 SpawnProjectile(payload) 触发发射。
    /// </summary>
    public class RangedEnemy : EnemyBase
    {
        [SerializeField] private ProjectileConfigSO _projectileConfig;
        [SerializeField] private Transform          _firePoint;

        protected override void Awake()
        {
            base.Awake();
            Debug.Assert(_projectileConfig != null, $"[RangedEnemy] {name}: 未配置 ProjectileConfigSO。", this);
        }

        /// <summary>
        /// 从对象池生成一枚抖射物并朝玩家发射。
        /// payload 可留空；若传入多重配置键则由子类解析。
        /// </summary>
        public override void SpawnProjectile(string payload)
        {
            var spawnPos = _firePoint != null ? _firePoint.position : transform.position;
            var pool = ServiceLocator.GetOrDefault<IObjectPoolService>();
            if (pool == null)
            {
                Debug.LogWarning($"[RangedEnemy] {name}: IObjectPoolService 未就绪，无法生成抛射物。");
                return;
            }
            var go = pool.Spawn(
                _projectileConfig.PoolKey,
                spawnPos,
                Quaternion.identity);

            if (go == null) return;

            var proj = go.GetComponent<Projectile>();
            if (proj == null) return;

            Vector2 dir = _playerTransform != null
                ? ((Vector2)(_playerTransform.position - spawnPos)).normalized
                : (Vector2)transform.right;

            var damageInfo = DamageInfo.From(_projectileConfig.DamageSource);
            proj.Initialize(_projectileConfig, damageInfo, dir, gameObject.layer);
        }
    }
}