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_DiamondNum;
    public TextMeshProUGUI tMP_TurretConsumeNum;
    [Header("翅膀")]
    [Tooltip("翅膀实例化的父节点")]
    public Transform wingParent;
    // -------------------------
    // 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;

    /// <summary>
    /// 炮台在世界坐标(Z=0平面)的位置缓存。
    /// 因为炮台是 UGUI 元素,tra_CurrTurret.position 是 Canvas 坐标,不能直接和鱼的世界坐标比较距离。
    /// 这里用和子弹起点(GetBulletStartWorldPos)相同的转换方式,把 UI 坐标转成世界坐标。
    /// 由 LoadTurret 加载完炮台后计算并缓存,bot AI/锁定检测距离时用此字段。
    /// </summary>
    [System.NonSerialized]
    public Vector3 turretWorldPos;

    // -------------------------
    // 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;                           // 主锁定图标（单发/双倍用）
    public List<GameObject> lockFX_Triple = new List<GameObject>();  // 三发锁定额外2个图标
    public List<MonsterContral> tripleLockTargets = new List<MonsterContral>();
    public List<Transform> tripleLockPositions = new List<Transform>();

    // -------------------------
    // 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()
    {
        // 默认显示等待界面
        ShowWaiting();
    }

    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>
    /// 玩家加入 → 显示玩家 UI（child0），隐藏等待界面（child1）。
    /// </summary>
    public void ShowPlayer()
    {
        if (transform.childCount > 0)
            transform.GetChild(0).gameObject.SetActive(true);
        if (transform.childCount > 1)
            transform.GetChild(1).gameObject.SetActive(false);

        // 如果是本地玩家的座位，自动注册并加载装备
        if (user == GameManager.Instance?.user?.id)
        {
            localPlayerSit = this;

            var cannonUsing = GameManager.Instance.user.cannonUsing;
            if (cannonUsing != null && int.TryParse(cannonUsing.number, out int num))
                LoadTurret(num);

            var wingUsing = GameManager.Instance.user.wingUsing;
            if (wingUsing != null && int.TryParse(wingUsing.number, out int wingNum))
                LoadWing(wingNum);
        }

        // 非人机玩家加入时，自动分配为首个房主
        if (!isBot)
            AssignRoomOwner(this);
    }

    /// <summary>
    /// 玩家退出/等待 → 显示等待界面（child1），隐藏玩家 UI（child0）。
    /// </summary>
    public void ShowWaiting()
    {
        if (transform.childCount > 0)
            transform.GetChild(0).gameObject.SetActive(false);
        if (transform.childCount > 1)
            transform.GetChild(1).gameObject.SetActive(true);
    }

    /// <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>
    /// <remarks>鱼创建已由服务端 OnFishSpawn 统一下发,此处仅维护 roomOwnerSit 标识(用于 bot 控制/AFK 等场景)。</remarks>
    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>
    /// <remarks>鱼创建已由服务端 OnFishSpawn 统一下发,此处仅维护 roomOwnerSit 标识(用于 bot 控制/AFK 等场景)。</remarks>
    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)
    {
        // ⭐ 换炮台时只清活跃子弹(清屏),保留池缓存(同 prefab 能复用)
        // 用 ClearActive 而非 ClearAll:ClearAll 会清池导致永远不复用
        BulletPool.Instance.ClearActive();

        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);
        tra_CurrTurret = currentTurret.transform.parent;

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

        // ⭐ 缓存炮台在世界坐标(Z=0平面)的位置,bot AI/锁定检测距离时用
        //   和子弹起点(GetBulletStartWorldPos)用相同的 UI→世界 转换方式
        UpdateTurretWorldPos();

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

    /// <summary>
    /// 把炮台 UI 坐标转换成世界坐标(Z=0平面)并缓存到 turretWorldPos。
    /// 转换方式和 TurretData.GetBulletStartWorldPos 一致。
    /// </summary>
    public void UpdateTurretWorldPos()
    {
        if (tra_CurrTurret == null)
        {
            turretWorldPos = Vector3.zero;
            return;
        }

        RectTransform rect = tra_CurrTurret.GetComponent<RectTransform>();
        if (rect != null && UIManager.Instance != null && UIManager.Instance.uiRoot != null)
        {
            Canvas canvas = UIManager.Instance.uiRoot.GetComponent<Canvas>();
            Camera cam = Camera.main;

            Vector3 screenPos = RectTransformUtility.WorldToScreenPoint(
                canvas.renderMode == RenderMode.ScreenSpaceOverlay ? null : canvas.worldCamera,
                rect.position
            );
            float distance = Mathf.Abs(cam.transform.position.z - 0f);
            Vector3 worldPos = cam.ScreenToWorldPoint(new Vector3(screenPos.x, screenPos.y, distance));
            worldPos.z = 0f;
            turretWorldPos = worldPos;
        }
        else
        {
            // 非 UI(3D 物体)直接用 position
            turretWorldPos = tra_CurrTurret.position;
        }
    }

    /// <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);
    }
    // ==================== 翅膀加载（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 LoadWing(int turretNumber)
    {
        // 先清理已有翅膀（保留预设的 Camera，它是用来渲染翅膀到 RawImage 的）
        for (int i = wingParent.childCount - 1; i >= 0; i--)
        {
            var child = wingParent.GetChild(i);
            if (child.GetComponent<Camera>() != null)
                continue;   // 保留 Camera
            Destroy(child.gameObject);
        }

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

        // 克隆到 wingParent，保持预制体原始位置/旋转/缩放
        GameObject instance = Instantiate(prefab, wingParent, false);
        instance.SetActive(true);

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

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

    /// <summary>
    /// 根据后端下发的炮倍值同步 indexConsume 到 paoBeiList 对应档位，
    /// 避免加减炮倍时从 0 档开始导致跳变。
    /// </summary>
    public void SyncIndexByConsume(long consumeGold)
    {
        var list = CreateFishManager.Instance?.currGameType?.paoBeiList;
        if (list == null || list.Count == 0) return;
        int idx = list.IndexOf((int)consumeGold);
        indexConsume = idx >= 0 ? idx : 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();
        CreateFishManager.Instance.currGameType?.SyncCannonMultiple((int)consumeGoldNum);
    }

    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();
        CreateFishManager.Instance.currGameType?.SyncCannonMultiple((int)consumeGoldNum);
    }

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

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

        // 非三发锁定 → 隐藏额外图标
        if (!isLock) HideTripleLockIcons();
    }

    /// <summary>
    /// 设置三发锁定目标（3个目标分别追踪）
    /// </summary>
    public void SetTripleLockTargets(List<(MonsterContral monster, Transform hitPos)> targets)
    {
        if (targets == null || targets.Count == 0)
        {
            HideTripleLockIcons();
            return;
        }

        // 确保 lockFX_Triple 有2个克隆的图标（+主图标=3个）
        EnsureTripleLockIcons();

        tripleLockTargets.Clear();
        tripleLockPositions.Clear();

        // 第一个目标用主 lockFX
        var primary = targets[0];
        monCotl_Lock = primary.monster;
        monCotl_Lock_Position = primary.hitPos;
        isLock = true;
        lockFX.SetActive(true);
        tripleLockTargets.Add(primary.monster);
        tripleLockPositions.Add(primary.hitPos);

        // 第二个和第三个目标用 lockFX_Triple
        for (int i = 1; i < targets.Count && i < 3; i++)
        {
            int idx = i - 1;
            if (idx < lockFX_Triple.Count && lockFX_Triple[idx] != null)
            {
                lockFX_Triple[idx].SetActive(true);
                tripleLockTargets.Add(targets[i].monster);
                tripleLockPositions.Add(targets[i].hitPos);
            }
        }

        // 隐藏多余的
        for (int i = targets.Count - 1; i < lockFX_Triple.Count; i++)
        {
            if (lockFX_Triple[i] != null)
                lockFX_Triple[i].SetActive(false);
        }
    }

    private void EnsureTripleLockIcons()
    {
        while (lockFX_Triple.Count < 2 && lockFX != null)
        {
            var clone = GameObject.Instantiate(lockFX, lockFX.transform.parent);
            clone.name = lockFX.name + "_Triple" + (lockFX_Triple.Count + 1);
            clone.transform.localScale = lockFX.transform.localScale * 0.5f;
            lockFX_Triple.Add(clone);
        }
    }

    public void HideTripleLockIcons()
    {
        foreach (var icon in lockFX_Triple)
        {
            if (icon != null)
                icon.SetActive(false);
        }
        tripleLockTargets.Clear();
        tripleLockPositions.Clear();
    }

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