using System;
using System.Collections.Generic;
using System.Linq;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

public class SitPosData : MonoBehaviour
{
    /// <summary>本地玩家的座位引用（由游戏面板初始化时设置）</summary>
    public static SitPosData localPlayerSit;
    /// <summary>当前房间房主座位（人机请求由房主发送，房主退出后自动继承）</summary>
    public static SitPosData roomOwnerSit;

    // -------------------------
    // 玩家基础信息
    // -------------------------
    [Header("玩家信息")]
    public string user;
    [Tooltip("座位编号 0~3。0,1=下方  2,3=上方")]
    public int posID;
    [Tooltip("是否为人机")]
    public bool isBot = false;

    /// <summary>posID>=2 = 上方，需要翻转（0,1=下方；2,3=上方）</summary>
    public bool IsFlipped => posID >= 2;

    [Header("金币")]
    public long goldNum;
    public long consumeGoldNum;
    public TextMeshProUGUI tMP_GoldNum;
    public TextMeshProUGUI tMP_TurretConsumeNum;

    // -------------------------
    // 炮台管理（动态克隆）
    // -------------------------
    [Header("炮台")]
    [Tooltip("炮台实例化的父节点")]
    public Transform turretParent;

    [Tooltip("炮台锚点位置（相对 turretParent）")]
    public Vector2 turretAnchoredPos = Vector2.zero;

    [Tooltip("当前装备的炮台编号")]
    public int currentTurretNumber;

    /// <summary>当前运行中的炮台实例</summary>
    public TurretData currentTurret;

    // 状态机入口（GameMainPanel 调用）
    public Action<TurretState> OnStateChange;

    // -------------------------
    // 炮台旋转
    // -------------------------
    [Header("炮台旋转")]
    public Transform tra_CurrTurret;
    public float currentAngle;

    // -------------------------
    // 锁定系统
    // -------------------------
    [Header("锁定系统")]
    public MonsterContral monCotl_Lock;
    public Transform monCotl_Lock_Position;
    public bool isLock = false;
    public GameObject lockFX;

    // -------------------------
    // UI
    // -------------------------
    [Header("UI")]
    public Button btn_TurretAdd;
    public Button btn_TurretMinus;

    private void Awake()
    {
        btn_TurretAdd.onClick.AddListener(() => ChangeTurretAddConsumeNum());
        btn_TurretMinus.onClick.AddListener(() => ChangeTurretMinusConsumeNum());
    }

    private void OnEnable()
    {
        // 如果是本地玩家的座位，自动注册为 localPlayerSit
        if (user == GameManager.Instance?.user?.id)
        {
            localPlayerSit = this;

            // 加载玩家当前装备的炮台
            var cannonUsing = GameManager.Instance.user.cannonUsing;
            if (cannonUsing != null && int.TryParse(cannonUsing.number, out int num))
                LoadTurret(num);
        }
    }

    private void OnDisable()
    {
        if (localPlayerSit == this)
            localPlayerSit = null;
        // 房主退出 → 自动继承给第一个非人机玩家
        if (roomOwnerSit == this)
        {
            roomOwnerSit = null;
            TransferRoomOwner();
        }
    }

    /// <summary>房主退出后，将房主身份转移给第一个活跃的非人机玩家</summary>
    public static void TransferRoomOwner()
    {
        var list = FindObjectsOfType<SitPosData>();
        foreach (var sit in list)
        {
            if (!sit.isBot && sit.gameObject.activeInHierarchy && sit != roomOwnerSit)
            {
                roomOwnerSit = sit;
                break;
            }
        }
    }

    /// <summary>分配房主（首个非人机玩家）</summary>
    public static void AssignRoomOwner(SitPosData sit)
    {
        if (roomOwnerSit == null && !sit.isBot)
            roomOwnerSit = sit;
    }

    // ==================== 炮台加载（动态克隆） ====================

    /// <summary>
    /// 根据炮台编号，从 Addressables 加载预制体并克隆到 turretParent。
    /// 位置/旋转/缩放保持预制体原始值，不动。
    /// </summary>
    public void LoadTurret(int turretNumber)
    {
        if (currentTurret != null)
        {
            Destroy(currentTurret.gameObject);
            currentTurret = null;
        }

        currentTurretNumber = turretNumber;

        // 从 TurretResourcesData 拿预制体
        GameObject prefab = TurretResourcesData.GetTurretPrefab(turretNumber);
        if (prefab == null)
        {
            Debug.LogWarning($"[SitPosData] 炮台预制体未加载: #{turretNumber}");
            return;
        }

        // 克隆到父节点
        GameObject instance = Instantiate(prefab, turretParent, false);
        instance.SetActive(true);

        // 固定位置归零，由外部父节点定位
        var rt = instance.GetComponent<RectTransform>();
        if (rt != null)
            rt.anchoredPosition = turretAnchoredPos;

        currentTurret = instance.GetComponent<TurretData>();
        if (currentTurret == null)
        {
            Debug.LogError($"[SitPosData] 预制体上未找到 TurretData 组件: #{turretNumber}");
            Destroy(instance);
            return;
        }

        currentTurret.turretNumber = turretNumber;

        // 缓存旋转节点
        tra_CurrTurret = currentTurret.transform.GetChild(0);

        // 绑定状态机入口
        OnStateChange = currentTurret.ChangeState;

        Debug.Log($"[SitPosData] 炮台已加载: #{turretNumber}");
    }

    /// <summary>根据炮台编号字符串加载。</summary>
    public void LoadTurret(string turretNumberStr)
    {
        if (int.TryParse(turretNumberStr, out int num))
            LoadTurret(num);
    }

    // -------------------------
    // 切换状态（GameMainPanel 调用）
    // -------------------------
    public void ChangeState(TurretState state)
    {
        OnStateChange?.Invoke(state);
    }

    // -------------------------
    // 炮台旋转（GameMainPanel 调用）
    // -------------------------
    public void SetRotation(float angle)
    {
        currentAngle = angle;
        if (tra_CurrTurret != null)
            tra_CurrTurret.rotation = Quaternion.Euler(0, 0, angle);
    }

    // -------------------------
    // 获取发射点（给 GameMainPanel）
    // -------------------------
    public Vector2 GetBulletStartPos()
    {
        return currentTurret != null
            ? currentTurret.GetBulletStartWorldPos()
            : Vector2.zero;
    }

    // ==================== 金币消耗 ====================

    public bool ConsumeGold(int mul = 1)
    {
        long temp = goldNum - consumeGoldNum * mul;
        if (temp < 0) return false;
        goldNum = temp;
        tMP_GoldNum.text = goldNum.ToString();
        return true;
    }

    int indexConsume = 0;

    public void ChangeTurretAddConsumeNum()
    {
        if (CreateFishManager.Instance.currGameType.paoBeiList.Count - 1 > indexConsume)
            indexConsume++;
        else
            indexConsume = 0;
        AudioManager.Instance.PlayerFX(62011);

        consumeGoldNum = CreateFishManager.Instance.currGameType.paoBeiList[indexConsume];
        tMP_TurretConsumeNum.text = consumeGoldNum.ToString();
    }

    public void ChangeTurretMinusConsumeNum()
    {
        if (indexConsume > 0)
            indexConsume--;
        else
            indexConsume = CreateFishManager.Instance.currGameType.paoBeiList.Count - 1;
        AudioManager.Instance.PlayerFX(62010);

        consumeGoldNum = CreateFishManager.Instance.currGameType.paoBeiList[indexConsume];
        tMP_TurretConsumeNum.text = consumeGoldNum.ToString();
    }

    // ==================== 锁定系统 ====================

    public void SetLockTarget(MonsterContral monster, Transform hitPos)
    {
        monCotl_Lock = monster;
        monCotl_Lock_Position = hitPos;
        isLock = monster != null;
        lockFX.SetActive(isLock);
    }

    public void ClearLock()
    {
        monCotl_Lock = null;
        monCotl_Lock_Position = null;
        isLock = false;
        lockFX.SetActive(false);
        ChangeState(TurretState.Idle);
    }
}