using SPTarkov.DI.Annotations;
using SPTarkov.Server.Core.Generators;
using SPTarkov.Server.Core.Helpers;
using SPTarkov.Server.Core.Models.Eft.Common.Tables;
using SPTarkov.Server.Core.Models.Eft.Game;
using SPTarkov.Server.Core.Models.Enums;
using SPTarkov.Server.Core.Models.Spt.Config;
using SPTarkov.Server.Core.Models.Utils;
using SPTarkov.Server.Core.Servers;
using SPTarkov.Server.Core.Services;
using SPTarkov.Server.Core.Utils;
using SPTarkov.Server.Core.Utils.Cloners;

namespace SPTarkov.Server.Core.Controllers;

[Injectable]
public class TraderController(
    ISptLogger<TraderController> _logger,
    TimeUtil _timeUtil,
    DatabaseService _databaseService,
    TraderAssortHelper _traderAssortHelper,
    ProfileHelper _profileHelper,
    TraderHelper _traderHelper,
    PaymentHelper _paymentHelper,
    RagfairPriceService _ragfairPriceService,
    TraderPurchasePersisterService _traderPurchasePersisterService,
    FenceService _fenceService,
    FenceBaseAssortGenerator _fenceBaseAssortGenerator,
    ConfigServer _configServer,
    ICloner _cloner
)
{
    protected TraderConfig _traderConfig = _configServer.GetConfig<TraderConfig>();

    /// <summary>
    ///     Runs when onLoad event is fired
    ///     Iterate over traders, ensure a pristine copy of their assorts is stored in traderAssortService
    ///     Store timestamp of next assort refresh in nextResupply property of traders .base object
    /// </summary>
    public void Load()
    {
        var nextHourTimestamp = _timeUtil.GetTimeStampOfNextHour();
        var traderResetStartsWithServer = _traderConfig.TradersResetFromServerStart;

        var traders = _databaseService.GetTraders();
        foreach (var (traderId, trader) in traders)
        {
            if (traderId is "ragfair" or Traders.LIGHTHOUSEKEEPER)
            {
                continue;
            }

            if (traderId == Traders.FENCE)
            {
                _fenceBaseAssortGenerator.GenerateFenceBaseAssorts();
                _fenceService.GenerateFenceAssorts();

                continue;
            }

            // Adjust price by traderPriceMultiplier config property
            if (_traderConfig.TraderPriceMultiplier != 1)
            {
                AdjustTraderItemPrices(trader, _traderConfig.TraderPriceMultiplier);
            }

            _traderPurchasePersisterService.RemoveStalePurchasesFromProfiles(traderId);

            // Set to next hour on clock or current time + 60 minutes
            trader.Base.NextResupply =
                traderResetStartsWithServer ? (int) _traderHelper.GetNextUpdateTimestamp(trader.Base.Id) : (int) nextHourTimestamp;
        }
    }

    /// <summary>
    ///     Adjust trader item prices based on config value multiplier
    ///     only applies to items sold for currency
    /// </summary>
    /// <param name="trader">Trader to adjust prices of</param>
    /// <param name="multiplier">Coef to apply to traders' items' prices</param>
    protected void AdjustTraderItemPrices(Trader trader, double multiplier)
    {
        foreach (var kvp in trader.Assort?.BarterScheme)
        {
            var barterSchemeItem = kvp.Value?.FirstOrDefault()?.FirstOrDefault();
            if (barterSchemeItem != null && _paymentHelper.IsMoneyTpl(barterSchemeItem.Template))
            {
                barterSchemeItem.Count += Math.Round(
                    barterSchemeItem?.Count * multiplier ?? 0D,
                    2
                );
            }
        }
    }

    /// <summary>
    ///     Runs when onUpdate is fired
    ///     If current time is > nextResupply(expire) time of trader, refresh traders assorts and
    ///     Fence is handled slightly differently
    /// </summary>
    /// <returns>True if ran successfully</returns>
    public bool Update()
    {
        foreach (var (traderId, data) in _databaseService.GetTables().Traders)
        {
            switch (traderId)
            {
                case Traders.LIGHTHOUSEKEEPER:
                    continue;
                case Traders.FENCE:
                    {
                        if (_fenceService.NeedsPartialRefresh())
                        {
                            _fenceService.GenerateFenceAssorts();
                        }

                        continue;
                    }
            }

            // Trader needs to be refreshed
            if (_traderAssortHelper.TraderAssortsHaveExpired(traderId))
            {
                _traderAssortHelper.ResetExpiredTrader(data);

                // Reset purchase data per trader as they have independent reset times
                _traderPurchasePersisterService.ResetTraderPurchasesStoredInProfile(traderId);
            }
        }

        return true;
    }

    /// <summary>
    ///     Handle client/trading/api/traderSettings
    /// </summary>
    /// <param name="sessionId">session id</param>
    /// <returns>Return a list of all traders</returns>
    public List<TraderBase> GetAllTraders(string sessionId)
    {
        var traders = new List<TraderBase>();
        var pmcData = _profileHelper.GetPmcProfile(sessionId);
        foreach (var (traderId, _) in _databaseService.GetTables().Traders)
        {
            traders.Add(_traderHelper.GetTrader(traderId, sessionId));

            if (pmcData?.Info != null)
            {
                _traderHelper.LevelUp(traderId, pmcData);
            }
        }

        traders.Sort(SortByTraderId);
        return traders;
    }

    /// <summary>
    ///     Order traders by their traderId (tid)
    /// </summary>
    /// <param name="traderA">First trader to compare</param>
    /// <param name="traderB">Second trader to compare</param>
    /// <returns>1,-1 or 0</returns>
    protected static int SortByTraderId(TraderBase traderA, TraderBase traderB)
    {
        return string.CompareOrdinal(traderA.Id, traderB.Id);
    }

    /// <summary>
    ///     Handle client/trading/api/getTrader
    /// </summary>
    /// <param name="sessionId">Session/Player id</param>
    /// <param name="traderId"></param>
    /// <returns></returns>
    public TraderBase GetTrader(string sessionId, string traderId)
    {
        return _traderHelper.GetTrader(sessionId, traderId);
    }

    /// <summary>
    ///     Handle client/trading/api/getTraderAssort
    /// </summary>
    /// <param name="sessionId">Session/Player id</param>
    /// <param name="traderId"></param>
    /// <returns></returns>
    public TraderAssort GetAssort(string sessionId, string traderId)
    {
        return _traderAssortHelper.GetAssort(sessionId, traderId);
    }

    /// <summary>
    ///     Handle client/items/prices/TRADERID
    /// </summary>
    /// <returns></returns>
    public GetItemPricesResponse GetItemPrices(string sessionId, string traderId)
    {
        var handbookPrices = _ragfairPriceService.GetAllStaticPrices();

        return new GetItemPricesResponse
        {
            SupplyNextTime = _traderHelper.GetNextUpdateTimestamp(traderId),
            Prices = handbookPrices,
            CurrencyCourses = new Dictionary<string, double>
            {
                { "5449016a4bdc2d6f028b456f", handbookPrices[Money.ROUBLES] },
                { "569668774bdc2da2298b4568", handbookPrices[Money.EUROS] },
                { "5696686a4bdc2da3298b456a", handbookPrices[Money.DOLLARS] }
            }
        };
    }
}