using System.Collections.Generic;
using FairyGUI;
using FGUI.LG_live;
using SGModule.Common.Extensions;
using UnityEngine;
using UnityEngine.Video;

namespace BallKingdomCrush
{
    public class LiveUI : BaseUI
    {
        private const int MaxVisibleCount = 6; // 一屏最多6个播放器
        private static readonly Dictionary<item_live, VideoPlayer> dictionary_ = new();
        private LiveUICtrl ctrl;

        private float late_time = 0.1f;
        private List<Live> LiveConfig;
        private LiveModel model;
        private com_live ui;


        private GameObject videoParent;

        public LiveUI(LiveUICtrl ctrl) : base(ctrl)
        {
            uiName = UIConst.LiveUI;
            this.ctrl = ctrl;
        }

        protected override void SetUIInfo(UIInfo uiInfo)
        {
            uiInfo.packageName = "LG_live";
            uiInfo.assetName = "com_live";
            uiInfo.layerType = UILayerType.Popup;
            uiInfo.isNeedOpenAnim = false;
            uiInfo.isNeedCloseAnim = false;
            uiInfo.isNeedUIMask = true;
        }

        private void UpdateEvent()
        {
            late_time = 0.1f;
        }

        // 初始化页面逻辑
        private void InitView()
        {
        }

        #region 生命周期

        protected override void OnInit()
        {
            videoParent = new GameObject("VideoPlayerParent");
            VideoPlayerPool.Instance.Init(videoParent, MaxVisibleCount);
        }

        protected override void OnClose()
        {
            // 归还所有播放器
            foreach (var kvp in dictionary_)
                VideoPlayerPool.Instance.ReturnPlayer(kvp.Value);

            dictionary_.Clear();
            VideoPlayerPool.Instance.DisposeAll();
            Object.Destroy(videoParent);

            foreach (var t in loader_list)
                if (t != null && !t.isDisposed && t.texture != null)
                {
                    t.texture.Dispose();
                    t.texture = null;
                }

            GLoaderPool.Instance.DisposeAll();
            TextureHelper.ClearMaterialPool();

            // 强制卸载未使用的资源
            // Resources.UnloadUnusedAssets();
            // MemoryManager.CleanMemoryMonitor();
        }

        protected override void OnBind()
        {
            ui = baseUI as com_live;
        }

        private readonly List<GLoader> loader_list = new();


        protected override void OnOpenBefore(object args)
        {
            LiveConfig = ConfigSystem.GetLiveConfig();

            ui.list_.itemRenderer = RendererList;
            Debug.Log($"LiveConfig.Count==1=== {LiveConfig.Count}");
            ui.list_.numItems = LiveConfig.Count;

            ui.btn_close.SetClick(() => { CtrlCloseUI(); });

            InitView();

            // 滚动过程中实时刷新可见播放器
            ui.list_.scrollPane.onScrollEnd.Add(OnScrollEnd);

            // 打开页面时初始化一次
            OnScrollEnd();
        }


        private HashSet<item_live> lastVisibleItems = new();

        private void OnScrollEnd()
        {
            Debug.Log($"[OnScrollEnd]==lastVisibleItems=== {lastVisibleItems.Count}");
            // 1️⃣ 回收上一次的可见播放器
            foreach (var oldItem in lastVisibleItems)
                if (dictionary_.TryGetValue(oldItem, out var player))
                {
                    player.Pause();
                    player.targetTexture?.Release();
                    VideoPlayerPool.Instance.ReturnPlayer(player);
                    dictionary_.Remove(oldItem);
                    oldItem.com_loader.visible = false;
                    oldItem.img_cover.visible = true;
                }

            lastVisibleItems.Clear();


            // 2️⃣ 获取当前可见项
            var firstIndex = ui.list_.GetFirstChildInView();
            var lastIndex = Mathf.Min(firstIndex + MaxVisibleCount, ui.list_.numItems);

            HashSet<item_live> newVisibleItems = new();
            for (var i = firstIndex; i < lastIndex; i++)
                if (ui.list_.GetChildAt(i) is item_live item)
                {
                    newVisibleItems.Add(item);

                    // 分配播放器
                    if (!dictionary_.ContainsKey(item))
                    {
                        var player = VideoPlayerPool.Instance.GetPlayer();
                        if (player != null)
                        {
                            dictionary_[item] = player;
                            BindPlayerToItem(item, i);
                        }
                    }
                }

            // 3️⃣ 保存为“上一次可见项”
            lastVisibleItems = newVisibleItems;
        }

        private void BindPlayerToItem(item_live item, int index)
        {
            var data = PreDownloadManager.GetLiveDataByIndex(LiveConfig[index], index);

            Debug.Log($"[绑定播放器 进度] progress==1=== {data.progress}");
            if (data.progress <= 0) return;

            var player = dictionary_[item];
            var loader = item.com_loader.GetChild("loader") as GLoader;
            item.com_loader.visible = true;

            if (!loader_list.Contains(loader)) loader_list.Add(loader);

            TextureHelper.SetVideoLoader(player, loader, LiveConfig[index].Name, vp =>
            {
                if (vp != null && !item.isDisposed)
                {
                    if (data.progress >= 100)
                    {
                        item.img_cover.visible = false;
                        GameDispatcher.Instance.Dispatch(GameMsg.liveVideoLoaded);
                    }
                }
            });
        }


        private void RendererList(int index, GObject obj)
        {
            var livedata_ = PreDownloadManager.GetLiveDataByIndex(LiveConfig[index], index);

            var item = (item_live)obj;

            // UI状态显示
            item.state.selectedIndex = livedata_.progress <= 0 ? 1 : 0;

            if (LiveConfig[index].SubscribeUnlock == 1)
            {
                if (livedata_.progress < 100) item.vip.selectedIndex = 1;
                else item.vip.selectedIndex = 2;
            }
            else item.vip.selectedIndex = 0;

            item.mask.img_mask.fillAmount = (float)(100 - livedata_.progress) / 100;
            var coverLoader = item.img_cover.GetChild("loader") as GLoader;
            LiveVideoManager.Instance.GetVideoCover(coverLoader, LiveConfig[index].Name + "_cover", (tex) => {
                if (tex != null) {

                    if (coverLoader != null) {
                        coverLoader.texture = new NTexture(tex);
                        coverLoader.visible = true;
                    }
                }
            });

            // 点击事件
            item.SetClick(() =>
            {
                if (GameHelper.GetLevel() < GameHelper.GetCommonModel().UnlockLive[1])
                {
                    if (DataMgr.IsUnlockLive.Value < 0 && DataMgr.VipLevel.Value < 0) UICtrlDispatcher.Instance.Dispatch(UICtrlMsg.SecretUnlockUI_Open, 2);
                    else if (DataMgr.IsUnlockLive.Value == 0) UICtrlDispatcher.Instance.Dispatch(UICtrlMsg.UnlockTipsUI_Open, 2);
                    else HandleDetailOpen(item, index);
                }
                else
                {
                    HandleDetailOpen(item, index);
                }
            });
        }

        private void HandleDetailOpen(item_live item, int index)
        {
            if (dictionary_.TryGetValue(item, out var player))
                uiCtrlDispatcher.Dispatch(UICtrlMsg.LiveDetailUI_Open, (index, player));
        }

        protected override void OnOpen(object args)
        {
        }

        protected override void OnHide()
        {
        }

        protected override void OnDisplay(object args)
        {
        }

        #endregion

        #region 消息

        protected override void AddListener()
        {
            GameDispatcher.Instance.AddListener(GameMsg.LiveChange, Refresh);
            HallManager.Instance.UpdateEvent += UpdateEvent;
        }

        protected override void RemoveListener()
        {
            GameDispatcher.Instance.RemoveListener(GameMsg.LiveChange, Refresh);
            HallManager.Instance.UpdateEvent -= UpdateEvent;
        }


        private void Refresh(object param = null)
        {
            var index = param.As<int>();
            // ui.list_.itemRenderer = RendererList;
            // Debug.Log($"LiveConfig.Count==2=== {LiveConfig.Count}");
            // ui.list_.numItems = LiveConfig.Count;


            if (ui.list_.GetChildAt(index) is item_live item)
            {
                item.state.selectedIndex = 0;
                var livedata_ = PreDownloadManager.GetLiveDataByIndex(LiveConfig[index], index);
                item.mask.img_mask.fillAmount = (float)(100 - livedata_.progress) / 100;
                BindPlayerToItem(item, index);
                if (LiveConfig[index].SubscribeUnlock == 1)
                {
                    if (livedata_.progress < 100) item.vip.selectedIndex = 1;
                    else item.vip.selectedIndex = 2;
                }
                else item.vip.selectedIndex = 0;
            }
        }

        #endregion
    }

    public class LiveData
    {
        public int AD_num;
        public int progress;
        public int Singleprogress;
        public long LiveADTime;
    }
}