using System.Text;
using GameCore;
using cfg;
using asap.core;
using System.Collections.Generic;
using UnityEngine;
using System.Linq;

namespace OfferStoryChain
{
    public class Manager
    {
        #region  RedPoint
        public bool DoNeedRedPoint
        {
            get
            {
                var packIdList = GetPackIdList();
                if (_roundCount >= packIdList.Count)
                    return false;
                var packList = GetPackList(packIdList[_roundCount]);
                if (_progress < 0 || _progress >= packList.Count)
                    return false;
                return packList[_progress].IAPID == 0;
            }
        }

        public const string RedPointKey = "offerstorychain";
        #endregion


        #region DataStorage
        private int _eventId, _progress, _vipOnTrigger, _roundCount;
        public int EventId => _eventId;
        public int Progress => _progress;
        public int VipLevel => _vipOnTrigger;
        public int RoundCount => _roundCount;
        public bool IsActive
        {
            get
            {
                (var startTime, var endTime) = FtUtils.GetEventTimeLimit(_eventId);
                var isWithinTime = ZZTimeHelper.UtcNow() >= startTime && ZZTimeHelper.UtcNow() <= endTime;
                var isOnGoing = _roundCount < GetMaxRoundCount();
                return isWithinTime && isOnGoing;
            }
        }

        private const string PlayFabKey = "OfferStoryChain";
        private PlayerItemData _playerItemData => GContext.container.Resolve<PlayerItemData>();

        public static void InitEvent(cfg.FishingEvent e)
        {
            var manager = GContext.container.Resolve<Manager>();
            if (manager == null)
            {
                GContext.container.Register<Manager>().AsSingleton();
                manager = GContext.container.Resolve<Manager>();
            }
            var loadRes = manager.Load();
            if (!loadRes || manager.EventId != e.ID)
            {
                manager.Init(e.ID);
                manager.Save();
            }
            UITypes.OfferStoryChainPanel.SetType(manager.GetUiAddressableUrl());
        }

        public void Init(int eventId)
        {
            _eventId = eventId;
            _progress = 0;
            _redirectId = _tables.TbFishingEvent[_eventId].RedirectID;
            _vipOnTrigger = GContext.container.Resolve<PlayerData>().PriceLv;
            _roundCount = 0;
        }

        public void InitTest()
        {
            _eventId = 114514;
            _progress = 0;
            _redirectId = 92101001;
            _vipOnTrigger = GContext.container.Resolve<PlayerData>().PriceLv;
            _roundCount = 0;
        }

        public bool Load()
        {
            var s = PlayFabMgr.Instance.GetLocalData(PlayFabKey);
            if (string.IsNullOrEmpty(s))
            {
                Debug.LogWarning("[OfferStoryChain] No pf data found.");
                return false;
            }

            var parts = s.Split(',');
            if (parts.Length != 4)
            {
                Debug.LogWarning($"[OfferStoryChain] String format error. Expect 4, but got {parts.Length}");
                return false;
            }

            if (!int.TryParse(parts[0], out int eventId)
                || !int.TryParse(parts[1], out int progress)
                || !int.TryParse(parts[2], out int vipLevel)
                || !int.TryParse(parts[3], out int roundCount))
            {
                Debug.LogWarning($"[OfferStoryChain] Parsing error.");
                return false;
            }

            _eventId = eventId;
            _progress = progress;
            _vipOnTrigger = vipLevel;
            _redirectId = _tables.TbFishingEvent[_eventId].RedirectID;
            _roundCount = roundCount;
            return true;
        }

        public void Save()
        {
            var sb = new StringBuilder();
            sb.AppendFormat("{0},{1},{2},{3}", _eventId, _progress, _vipOnTrigger, _roundCount);
            PlayFabMgr.Instance.UpdateUserDataValue(PlayFabKey, sb.ToString());
        }

        public void Reset()
        {
            _progress = 0;
            _roundCount = 0;
            Save();
        }
        #endregion

        #region Table Content
        private readonly Tables _tables = GContext.container.Resolve<Tables>();
        private int _redirectId;
        private EventOfferStoryChain TableMain => _tables.TbEventOfferStoryChain[_redirectId];
        private TbEventPackManager TablePacks => _tables.TbEventPackManager;

        private List<int> GetPackIdList()
        {
            var vip = Mathf.Clamp(_vipOnTrigger, 0, TableMain.VipOfferList.Count - 1);
            return TableMain.VipOfferList[vip];
        }

        private List<Pack> GetPackList(int packId)
        {
            return TablePacks[packId].VIPPackList[0].Select(p => _tables.TbPack[p]).ToList();
        }

        /// <summary>
        /// Max progress in one round.
        /// Progress more than this will either trigger next round or end this game.
        /// -1 because the last pack is the final reward.
        /// </summary>
        /// <returns></returns>
        public int GetMaxProgressInRound()
        {
            return GetPackList(GetPackIdList()[0]).Count - 1;
        }

        private int GetMaxRoundCount()
        {
            var vip = Mathf.Clamp(_vipOnTrigger, 0, TableMain.VipOfferList.Count - 1);
            return TableMain.VipOfferList[vip].Count;
        }

        public int GetFinalRewardDropId(int roundCount)
        {
            roundCount = Mathf.Clamp(roundCount, 0, GetMaxRoundCount() - 1);
            var packIdList = GetPackIdList();
            var packList = GetPackList(packIdList[roundCount]);
            return packList[^1].DropID;
        }

        public ScrollerItemViewData[] GetScrollerSlotDataArray(int roundCount)
        {
            var packIdList = GetPackIdList();
            var packList = GetPackList(packIdList[roundCount]);
            return Enumerable.Range(0, GetMaxProgressInRound())
                .Select(i => new ScrollerItemViewData
                {
                    Index = i,
                    EventId = _eventId,
                    DropId = packList[i].DropID,
                    IapId = packList[i].IAPID,
                    State = GetStateFromIndex(i)
                })
                .ToArray();
        }


        #endregion

        #region System

        private OfferStoryChain.ScrollerItemViewState GetStateFromIndex(int idx)
        {
            if (idx < _progress)
                return OfferStoryChain.ScrollerItemViewState.Bought;
            if (idx == _progress)
                return OfferStoryChain.ScrollerItemViewState.Available;
            return OfferStoryChain.ScrollerItemViewState.Locked;

        }
        public IEventAggregator EventAggregator = new EventAggregator();

        public MainPanelData GetMainPanelData()
        {
            var res = new MainPanelData();
            res.Progress = _progress;
            res.Reward = _playerItemData.GetItemDataByDropIdLureInflation(null, GetFinalRewardDropId(_roundCount))[0];
            res.ScrollerItemViewDataList = GetScrollerSlotDataArray(_roundCount);
            res.SpineBaseName = TableMain.Spine;
            return res;
        }

        public List<ItemData> GrantReward(int dropId)
        {
            var rewards = _playerItemData.AddItemByDropLureInflation(null, dropId, null);
            MoveToNextSlotAndTryGrantFinalReward();
            return rewards;
        }

        public async System.Threading.Tasks.Task<(bool res, List<ItemData> rewards)> GrantReward(int dropId, IAPItemList iapItemList, int eventId)
        {
            var rewards = _playerItemData.GetItemDataByDropIdLureInflation(null, dropId);
            var shopBuyTypeData = new ShopBuyTypeData { type = ShopBuyType.EventPack, ID = eventId };
            bool res = await GContext.container.Resolve<PlayerShopData>()
                .OnBuy(dropId, shopBuyTypeData, iapItemList, rewards);
            return (res, rewards);
        }

        public void MoveToNextSlotAndTryGrantFinalReward()
        {
            Debug.Log($"[OfferStoryChain] Move to next slot. Current Progress: {_progress}");
            _progress++;
            if (_progress >= GetMaxProgressInRound())
            {
                var finalRewardDropId = GetFinalRewardDropId(_roundCount);
                _playerItemData.AddItemByDropLureInflation(null, finalRewardDropId, null, false);
                _progress = 0;
                _roundCount++;
            }
            Save();
        }

        #endregion

        #region UI Data
        public TimerContext GetTimerData()
        {
            var res = new TimerContext();
            (res.StartTime, res.ExpiryTime) = FtUtils.GetEventTimeLimit(_eventId);
            return res;
        }

        public string GetEntrancIconUrl()
        {
            return TableMain.Icon;
        }

        public string GetUiAddressableUrl()
        {
            return TableMain.Addressable;
        }
        #endregion
    }

    public class ScrollerItemViewData
    {
        // public ItemData[] ItemDataList { get; set; }
        // public string TextPrice { get; set; }
        public int Index { get; set; }
        public int EventId { get; set; }
        public int DropId { get; set; }
        public int IapId { get; set; }
        // public string TextDiscount { get; set; }
        public ScrollerItemViewState State { get; set; }
    }

    public enum ScrollerItemViewState
    {
        Bought,
        Locked,
        Available
    }

    public class MainPanelData
    {
        public int Progress { get; set; }
        public ItemData Reward { get; set; }
        public ScrollerItemViewData[] ScrollerItemViewDataList { get; set; }
        public string SpineBaseName { get; set; }
        // public System.DateTime StartTime { get; set; }
        // public System.DateTime EndTime { get; set; }
    }

    public class OfferStoryChainCloseEvent { }
}