using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using EFSDK;
using GoogleMobileAds.Api;
using UnityEngine;

namespace WZ
{
    class ShowNativePosition
    {
        public NativeOverlayAd NativeOverlayAd;
        public NativeAdPosition Position;

        public ShowNativePosition(NativeOverlayAd nativeOverlayAd, NativeAdPosition position)
        {
            NativeOverlayAd = nativeOverlayAd;
            Position = position;
        }
    }

    public class AdmobNativeAdManager
    {
        private Dictionary<string, NativeOverlayAd> _nativeAds = new Dictionary<string, NativeOverlayAd>();
        private Dictionary<string, double> _adRevenueCache = new Dictionary<string, double>();
        private Dictionary<string, int> _retryCounters = new Dictionary<string, int>();
        private Dictionary<string, float> _adStartLoadTimes = new Dictionary<string, float>();
        private Dictionary<string, ShowNativePosition> showingNativeAds = new();

        public void InitializeAdUnits(List<string> adUnitIds)
        {
            foreach (var adUnitId in adUnitIds)
            {
                CreateNativeAd(adUnitId);
            }
        }

        private void CreateNativeAd(string adUnitId)
        {
            if (string.IsNullOrEmpty(adUnitId)) return;
            if (_nativeAds.ContainsKey(adUnitId))
            {
                LoggerUtils.Debug($"[Admob] Native Ad unit {adUnitId} already exists");
                return;
            }

            LoadAd(adUnitId);
            _adRevenueCache[adUnitId] = 0;
        }

        public void LoadAd(string adUnitId, bool timingRefresh = false)
        {
            LoggerUtils.Debug($"[Admob] Native Ad unit {adUnitId} load start , timingRefresh {timingRefresh}");
            //判断在线参数是否包含这个id
            if (!AdmobAdsManager.Instance.FindAdsID(AdsType.Native, adUnitId))
            {
                return;
            }

            NativeOverlayAd.Load(adUnitId, new AdRequest(), new NativeAdOptions(), (NativeOverlayAd ad, LoadAdError error) =>
            {
                _adStartLoadTimes[adUnitId] = Time.realtimeSinceStartup;
                LoggerUtils.Debug($"[Admob] Native Ad unit {adUnitId} load end, timingRefresh {timingRefresh}. {ad} error {error}");
                if (error != null || ad == null)
                {
                    if (!timingRefresh)
                    {
                        if (!_retryCounters.TryAdd(adUnitId, 0))
                        {
                            _retryCounters[adUnitId]++;
                        }
                    }


                    var adSource = "";
                    if (ad != null)
                    {
                        adSource = ad.GetResponseInfo().GetLoadedAdapterResponseInfo().AdSourceName;
                    }

                    var reason = "";

                    if (error != null)
                    {
                        reason = error.GetMessage();
                    }

                    AdsActionEvents.TrackAdFailToLoad(PlatformType.Admob,
                        adSource,
                        adUnitId,
                        AdsType.Native,
                        Time.realtimeSinceStartup - _adStartLoadTimes[adUnitId],
                        reason);

                    // 定时任务的刷新，由定时任务自己去刷新
                    if (timingRefresh)
                    {
                        if (!showingNativeAds.ContainsKey(adUnitId))
                        {
                            LoggerUtils.Debug($"[Admob] Native Ad unit {adUnitId}, 已经隐藏了，失败了也不需要在重新load了");
                            return;
                        }

                        TimingRefresh(adUnitId);
                        return;
                    }

                    var retryDelay = Math.Pow(2, Math.Min(6, _retryCounters[adUnitId]));
                    TimerUtils.Instance.DelayExecute((float)retryDelay, () => { LoadAd(adUnitId); });
                    LoggerUtils.Error($"[Admob] Native Ad unit {adUnitId}, timingRefresh {timingRefresh} ad failed to load an ad with error : " + error + " \n retryDelay :" + retryDelay);
                    return;
                }

                if (!AdmobAdsManager.Instance.FindAdsID(AdsType.Native, adUnitId))
                {
                    return;
                }

                AdsActionEvents.TrackAdLoaded(PlatformType.Admob,
                    ad.GetResponseInfo().GetLoadedAdapterResponseInfo().AdSourceName,
                    adUnitId,
                    AdsType.Native,
                    Time.realtimeSinceStartup - _adStartLoadTimes[adUnitId]);
                _retryCounters[adUnitId] = 0;


                // 临时缓存上一次的native ad，以便于刷新的时候，显示了新的，隐藏老的。
                var tempAd = _nativeAds.GetValueOrDefault(adUnitId, null);
                var nativeEcpm = AdmobUtils.GetNativeEcpm(ad);
                _nativeAds[adUnitId] = ad;
                _adRevenueCache[adUnitId] = nativeEcpm;
                LoggerUtils.Debug($"Admob Native ad loaded with, timingRefresh {timingRefresh} nativeEcpm = {nativeEcpm} response : " + ad.GetResponseInfo().ToString());
                AdsKeyEvents.Instance.LogAdFPUEvents(AdsType.Native);

                ad.OnAdPaid += (AdValue adValue) =>
                {
                    LoggerUtils.Debug($"[Admob] Native ad paid {adValue.Value} {adValue.CurrencyCode}.");
                    AdmobAdsManager.Instance.TrackAdImpression(ad.GetResponseInfo().GetLoadedAdapterResponseInfo(),
                        adValue,
                        AdsType.Native,
                        adUnitId);
                };

                ad.OnAdImpressionRecorded += () => { LoggerUtils.Debug("[Admob] Native ad recorded an impression."); };

                ad.OnAdClicked += () =>
                {
                    AdsActionEvents.TrackAdClicked(PlatformType.Admob,
                        ad.GetResponseInfo().GetLoadedAdapterResponseInfo().AdSourceName,
                        adUnitId,
                        AdsType.Native,
                        "",
                        AdmobUtils.GetNativeEcpm(ad));
                    LoggerUtils.Debug("[Admob] Native ad was clicked.");
                };

                ad.OnAdFullScreenContentOpened += () => { LoggerUtils.Debug("[Admob] Native ad full screen content opened."); };

                ad.OnAdFullScreenContentClosed += () =>
                {
                    AdsActionEvents.TrackAdClicked(PlatformType.Admob,
                        ad.GetResponseInfo().GetLoadedAdapterResponseInfo().AdSourceName,
                        adUnitId,
                        AdsType.Native,
                        "",
                        AdmobUtils.GetNativeEcpm(ad));
                    LoggerUtils.Debug("[Admob] Native ad full screen content closed.");
                };

                if (timingRefresh && tempAd != null)
                {
                    if (showingNativeAds.TryGetValue(adUnitId, out var showing))
                    {
                        var showingNativeOverlayAd = showing.NativeOverlayAd;
                        if (showingNativeOverlayAd != tempAd)
                        {
                            LoggerUtils.Error("[Admob] Native ad Error!!!! showing.NativeOverlayAd != tempAd");
                        }

                        LoggerUtils.Warning("[Admob] Native ad timing refresh , show ad");
                        ShowAd(showing.Position, adUnitId, tempAd, showingNativeOverlayAd);
                    }
                    else
                    {
                        LoggerUtils.Warning($"[Admob] Native ad timing refresh , show fail , showing native ads not ad unit id , {adUnitId} , 广告已经隐藏了，刷新成功，不需要再去显示出来");
                    }
                }
            });
        }

        // 显示价格最高的广告
        public void ShowHighestPayingAd(NativeAdPosition position)
        {
            LoggerUtils.Debug($"[Admob] Native ad ShowHighestPayingAd {position}");
            var highestPayingAdUnit = GetHighestPayingAdUnit();

            LoggerUtils.Debug($"[Admob] Native ad ShowHighestPayingAd {position} , highestPayingAdUnit = {highestPayingAdUnit}");
            if (!string.IsNullOrEmpty(highestPayingAdUnit))
            {
                ShowAd(position, highestPayingAdUnit);
            }
        }

        // 显示特定广告位的广告
        public void ShowAd(NativeAdPosition position, string adUnitId, NativeOverlayAd lastAd = null, NativeOverlayAd lastShowAd = null)
        {
            if (!AdmobAdsManager.Instance.FindAdsID(AdsType.Native, adUnitId))
            {
                return;
            }

            LoggerUtils.Debug($"[Admob] Native ad ShowAd start {adUnitId} , {position}");

            if (_nativeAds.TryGetValue(adUnitId, out var ad))
            {
                LoggerUtils.Debug($"[Admob] Native ad ShowAd end {adUnitId} , {position}");

                // Define a native template style with a custom style.
                var style = position.NativeTemplateStyle ?? new NativeTemplateStyle()
                {
                    TemplateId = NativeTemplateId.Medium,
                    // TemplateId = "big"
                    //  MainBackgroundColor = Color.green,
                    CallToActionText = new NativeTemplateTextStyle()
                    {
                        FontSize = 9,
                        Style = NativeTemplateFontStyle.Bold
                    }
                };

                // Renders a native overlay ad at the default size
                // and anchored to the bottom of the screne.
                ad.RenderTemplate(style, new AdSize(position.Width, position.Height), position.X, position.Y);

                showingNativeAds[adUnitId] = new ShowNativePosition(ad, position);
                ad.Show();
                lastAd?.Hide();
                lastShowAd?.Hide();
                TimingRefresh(adUnitId);
            }
        }

        private void TimingRefresh(string adUnitId)
        {
            var nativeReflashGap = int.Parse(FireBaseRemoteConfigManager.Instance.GetRemoteConfigString("Native_Reflash_Gap", "0"));

            if (nativeReflashGap <= 0)
            {
                LoggerUtils.Debug($"[Admob] Native ad ({adUnitId}) timing refresh failed. nativeReflashGap = 0");
                return;
            }

            if (adUnitId == StaticValue.AdmobFullNativeId)
            {
                LoggerUtils.Debug($"[Admob] Native ad ({adUnitId}) timing refresh finished. ad unit id is full native id.");
                return;
            }

            if (!showingNativeAds.ContainsKey(adUnitId))
            {
                LoggerUtils.Debug($"[Admob] Native ad ({adUnitId}) timing refresh finished.  ad unit is not show.");
                return;
            }

            WLoom.QueueOnMainThread(o =>
            {
                var refreshAdUnitId = (string)o;
                LoggerUtils.Debug($"[Admob] Native ad ({adUnitId}) timing refresh load start refreshAdUnitId : {refreshAdUnitId}.");
                if (showingNativeAds.ContainsKey(refreshAdUnitId))
                {
                    LoadAd(refreshAdUnitId, true);
                }
                else
                {
                    LoggerUtils.Warning($"[Admob] Native ad ({adUnitId}) timing refresh finished.  ad unit is not show. refreshAdUnitId : {refreshAdUnitId}.");
                }
            }, adUnitId, nativeReflashGap);
        }


        private float GetLoadedTime(string adUnitId)
        {
            return _adStartLoadTimes.TryGetValue(adUnitId, out var time) ? time : 0;
        }

        // 检查特定广告位是否可用
        public bool IsAdAvailable(string adUnitId)
        {
            return _nativeAds.TryGetValue(adUnitId, out _);
        }

        // 获取所有可用的广告位
        public List<string> GetAvailableAdUnits()
        {
            return _nativeAds.Select(kvp => kvp.Key).ToList();
        }

        // 获取价格最高的广告位ID
        public string GetHighestPayingAdUnit()
        {
            string highestPayingAdUnit = null;
            double highestRevenue = -1;
            LoggerUtils.Debug($"[Admob] Native ad GetHighestPayingAdUnit {_adRevenueCache.Count}");

            foreach (var kvp in _adRevenueCache)
            {
                var adUnitId = kvp.Key;
                var revenue = kvp.Value;

                // 确保广告确实已加载并且价格更高
                if (IsAdAvailable(adUnitId) && revenue > highestRevenue)
                {
                    highestRevenue = revenue;
                    highestPayingAdUnit = adUnitId;
                }
            }

            return highestPayingAdUnit;
        }

        // 获取价格最高的广告收益信息
        public double GetHighestPayingAdRevenue()
        {
            var highestPayingAdUnit = GetHighestPayingAdUnit();
            if (!string.IsNullOrEmpty(highestPayingAdUnit) &&
                _adRevenueCache.TryGetValue(highestPayingAdUnit, out var revenue))
            {
                return revenue;
            }

            return 0;
        }

        // 获取广告收益信息
        public double GetAdRevenue(string adUnit)
        {
            if (!string.IsNullOrEmpty(adUnit) &&
                _adRevenueCache.TryGetValue(adUnit, out var revenue))
            {
                return revenue;
            }

            return -1;
        }


        // 清理资源
        public void Destroy()
        {
            foreach (var ad in _nativeAds.Values)
            {
                ad.Destroy();
            }

            _nativeAds.Clear();
            _adRevenueCache.Clear();
        }

        public IEnumerator RemoveNative(string adUnitId)
        {
            // 不需要等待了
            // yield return new WaitForSeconds(0.2f);
            if (adUnitId == null || string.IsNullOrEmpty(adUnitId))
            {
                foreach (var key in showingNativeAds.Keys.ToList())
                {
                    LoggerUtils.Debug($"[Admob] Native ad removing NativeAd {adUnitId}");
                    showingNativeAds[key].NativeOverlayAd.Hide();
                    // 从字典中删除元素
                    showingNativeAds.Remove(key);
                    LoadAd(key);
                }

                yield break;
            }

            if (showingNativeAds.TryGetValue(adUnitId, out var tempAd))
            {
                LoggerUtils.Debug($"[Admob] Native ad removing NativeAd {adUnitId}");
                tempAd.NativeOverlayAd.Hide();
                showingNativeAds.Remove(adUnitId);
                LoadAd(adUnitId);
            }
            else
            {
                LoggerUtils.Debug($"[Admob] Native ad removing NativeAd {adUnitId} , failed to remove NativeAd");
            }
        }

        public void ClearAds(string[] adUnitIds)
        {
            // 将数组转换为HashSet以提高查找性能
            HashSet<string> validKeys = new HashSet<string>(adUnitIds);
            // 收集需要移除的key
            List<string> keysToRemove = new List<string>();

            foreach (var key in _nativeAds.Keys)
            {
                if (!validKeys.Contains(key))
                {
                    keysToRemove.Add(key);
                }
            }

            // 移除不在数组中的key
            foreach (string key in keysToRemove)
            {
                _nativeAds.Remove(key);
                _retryCounters.Remove(key);
                _adStartLoadTimes.Remove(key);
                _adRevenueCache.Remove(key);
            }
        }
    }
}