using UnityEngine;

/// <summary>
/// 拆家版出兵管理：从城堡前方出兵点生成单位，消耗能量。
/// 替代旧的召唤师身边召唤逻辑。
/// </summary>
public class CastleSpawnManager : MonoBehaviour
{
    public static CastleSpawnManager Instance { get; private set; }

    [Header("出兵点（城堡前方）")]
    public Transform blueSpawnPoint;
    public Transform redSpawnPoint;

    private void Awake()
    {
        if (Instance != null && Instance != this) { Destroy(gameObject); return; }
        Instance = this;
    }

    /// <summary>从指定阵营城堡出兵，消耗能量。teamId: 0=蓝, 1=红。</summary>
    public bool TrySpawn(CharacterData data, int teamId)
    {
        if (data == null || data.unitPrefab == null) return false;
        Transform spawnPoint = teamId == 0 ? blueSpawnPoint : redSpawnPoint;
        if (spawnPoint == null)
        {
            Debug.LogError($"找不到 teamId={teamId} 的出兵点");
            return false;
        }

        Vector3 direction = spawnPoint.forward;
        direction.y = 0f;
        if (direction.sqrMagnitude < 0.001f) direction = Vector3.forward;
        direction.Normalize();

        GameObject unit = Instantiate(
            data.unitPrefab,
            spawnPoint.position,
            Quaternion.LookRotation(direction, Vector3.up));

        // 设置阵营
        UnitTeam unitTeam = unit.GetComponent<UnitTeam>();
        if (unitTeam != null)
        {
            unitTeam.teamId = teamId;
            unit.tag = teamId == 0 ? "Friend" : "Enemy";
        }

        // 初始化属性（默认 1 级）
        UnitBase unitBase = unit.GetComponent<UnitBase>();
        if (unitBase != null)
        {
            PlayerCharacterData playerData = new PlayerCharacterData("castle_spawn", 1, 0);
            float hp = playerData.GetMaxHealth(data);
            float atk = playerData.GetAttackPower(data);
            float spd = playerData.GetMoveSpeed(data);
            unitBase.InitializeFromPlayerData(hp, atk, spd);
        }

        Debug.Log($"城堡出兵: {data.characterName} teamId={teamId} pos={spawnPoint.position}");
        return true;
    }

    public bool CanAfford(CharacterData data)
    {
        return data != null && data.unitPrefab != null;
    }
}