using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BattleManager : MonoBehaviour
{
  // 死亡时角色使用的材质
  public Material DeathMaterial;
  // 角色贴图数组（用于不同状态或类型）
  public Texture[] CharacterTextures;
  // 玩家战士预制体
  public GameObject PlayerWarriorPrefab;
  // 玩家弓箭手预制体
  public GameObject PlayerArcherPrefab;
  // 敌人战士预制体
  public GameObject EnemyWarriorPrefab;
  // 敌人弓箭手预制体
  public GameObject EnemyArcherPrefab;
  // 死亡掉落金币的预制体
  public GameObject GoldForDeadPrefab;
  // 战士升级等级数组
  public UpgradeLevels[] WarriorUpgradeLevel;
  // 当前关卡的敌方战士列表
  [HideInInspector] public List<Warrior> EnemyStageWarriors = new List<Warrior>();
  // 当前关卡的玩家战士列表
  [HideInInspector] public List<Warrior> PlayerStageWarriors = new List<Warrior>();
  // 用于记录玩家移动到下一个点的计数器
  private int _counter;
  // 标记当前关卡是否已经结束
  private bool _isStageEnd;

  /// <summary>
  /// 开始战斗，初始化敌我双方单位，重置状态并开始寻敌
  /// </summary>
  public void StartBattle()
  {
    // EnemyStageWarriors.Clear(); // 预留清空敌人列表
    _isStageEnd = false;
    // 获取当前关卡的敌人和玩家单位
    EnemyStageWarriors = ComponentsManager.StagesManager.GetCurrentStageItem.Enemys;
    PlayerStageWarriors = ComponentsManager.PlayerArmyManager.PlayerWarriors;

    // 初始化敌方单位，解除停止状态并开始寻敌
    for (int i = 0; i < EnemyStageWarriors.Count; i++)
    {
      EnemyStageWarriors[i].IsStop = false;
      EnemyStageWarriors[i].SearchTarget();
    }

    // 初始化玩家单位，解除停止状态并开始寻敌
    for (int i = 0; i < PlayerStageWarriors.Count; i++)
    {
      PlayerStageWarriors[i].IsStop = false;
      PlayerStageWarriors[i].SearchTarget();
    }
  }

  /// <summary>
  /// 检查当前战斗状态，判断胜负并处理关卡切换或结算
  /// </summary>
  public void CheckStatus()
  {
    // 实时获取最新的敌我双方单位列表
    EnemyStageWarriors = ComponentsManager.StagesManager.GetCurrentStageItem.Enemys;
    PlayerStageWarriors = ComponentsManager.PlayerArmyManager.PlayerWarriors;

    // 玩家胜利判定：敌人全部消灭
    if (EnemyStageWarriors.Count <= 0)
    {
      if (!_isStageEnd)
      {
        _isStageEnd = true;

        // 还有下一关，进入下一关
        if (ComponentsManager.StagesManager.NextStage())
        {
          _counter = 0;

          // 玩家单位移动到下一关的起点
          for (int i = 0; i < PlayerStageWarriors.Count; i++)
          {
            PlayerStageWarriors[i].IsStop = true;
            PlayerStageWarriors[i]
              .GoToNextPoint(ComponentsManager.StagesManager.GetCurrentStageItem.GetPlayerPoint(_counter).position);
            _counter++;
          }

          // 协程处理关卡胜利后的过渡
          StartCoroutine(StageWin());
        }
        else
        {
          // 没有下一关，玩家全体胜利
          for (int i = 0; i < PlayerStageWarriors.Count; i++)
            PlayerStageWarriors[i].PlayerWinner();

          ComponentsManager.GameUI.PlayerWinner();
        }
      }
    }

    // 玩家失败判定：玩家单位全部消灭
    if (PlayerStageWarriors.Count <= 0)
    {
      if (!_isStageEnd)
      {
        _isStageEnd = true;

        // 敌人单位播放胜利动画
        for (int i = 0; i < EnemyStageWarriors.Count; i++)
        {
          EnemyStageWarriors[i].IsStop = true;
          EnemyStageWarriors[i].PlayerWinner();
        }

        ComponentsManager.GameUI.PlayerLose();
      }
    }
  }

  /// <summary>
  /// 关卡胜利后的过渡协程，切换镜头、重置玩家单位、返回菜单
  /// </summary>
  IEnumerator StageWin()
  {
    yield return new WaitForSeconds(1.5f); // 等待1.5秒
    ComponentsManager.CameraScript.SetCameraPosition(new Vector3(-3.75f, 13f,
      -16f + (ComponentsManager.StagesManager.StageLevel * 23)));
    yield return new WaitForSeconds(4f); // 再等待4秒
    ComponentsManager.PlayerArmyManager.ResetPlayerWarriors(); // 重置玩家单位
    ComponentsManager.MenuUI.ActivateMenu(true); // 返回菜单界面
  }
}