using SPTarkov.DI.Annotations;
using SPTarkov.Server.Core.Extensions;
using SPTarkov.Server.Core.Helpers;
using SPTarkov.Server.Core.Models.Common;
using SPTarkov.Server.Core.Models.Eft.Common;
using SPTarkov.Server.Core.Models.Eft.Common.Tables;
using SPTarkov.Server.Core.Models.Eft.Profile;
using SPTarkov.Server.Core.Models.Enums;
using SPTarkov.Server.Core.Models.Spt.Config;
using SPTarkov.Server.Core.Models.Spt.Services;
using SPTarkov.Server.Core.Models.Utils;
using SPTarkov.Server.Core.Servers;
using SPTarkov.Server.Core.Utils;
using Insurance = SPTarkov.Server.Core.Models.Eft.Profile.Insurance;
using LogLevel = SPTarkov.Server.Core.Models.Spt.Logging.LogLevel;

namespace SPTarkov.Server.Core.Services;

[Injectable(InjectionType.Singleton)]
public class InsuranceService(
    ISptLogger<InsuranceService> logger,
    DatabaseService databaseService,
    RandomUtil randomUtil,
    ItemHelper itemHelper,
    TimeUtil timeUtil,
    SaveServer saveServer,
    TraderHelper traderHelper,
    ServerLocalisationService serverLocalisationService,
    MailSendService mailSendService,
    ConfigServer configServer
)
{
    protected readonly InsuranceConfig InsuranceConfig = configServer.GetConfig<InsuranceConfig>();
    protected readonly Dictionary<MongoId, Dictionary<MongoId, List<Item>>?> Insured = new();

    /// <summary>
    ///     Does player have insurance dictionary exists
    /// </summary>
    /// <param name="sessionId">Player id</param>
    /// <returns>True if exists</returns>
    public bool InsuranceDictionaryExists(MongoId sessionId)
    {
        return Insured.TryGetValue(sessionId, out _);
    }

    /// <summary>
    ///     Get all insured items by all traders for a profile
    /// </summary>
    /// <param name="sessionId">Profile id (session id)</param>
    /// <returns>Item list</returns>
    public Dictionary<MongoId, List<Item>>? GetInsurance(MongoId sessionId)
    {
        return Insured[sessionId];
    }

    public void ResetInsurance(MongoId sessionId)
    {
        if (!Insured.TryAdd(sessionId, new Dictionary<MongoId, List<Item>>()))
        {
            Insured[sessionId] = new Dictionary<MongoId, List<Item>>();
        }
    }

    /// <summary>
    ///     Sends 'I will go look for your stuff' trader message +
    ///     Store lost insurance items inside profile for later retrieval
    /// </summary>
    /// <param name="pmcData">Profile to send insured items to</param>
    /// <param name="sessionID">SessionId of current player</param>
    /// <param name="mapId">Id of the location player died/exited that caused the insurance to be issued on</param>
    public void StartPostRaidInsuranceLostProcess(PmcData pmcData, MongoId sessionID, string mapId)
    {
        // Get insurance items for each trader
        var globals = databaseService.GetGlobals();
        foreach (var traderKvP in GetInsurance(sessionID))
        {
            var traderBase = traderHelper.GetTrader(traderKvP.Key, sessionID);
            if (traderBase is null)
            {
                logger.Error(serverLocalisationService.GetText("insurance-unable_to_find_trader_by_id", traderKvP.Key));

                continue;
            }

            var dialogueTemplates = databaseService.GetTrader(traderKvP.Key).Dialogue;
            if (dialogueTemplates is null)
            {
                logger.Error(serverLocalisationService.GetText("insurance-trader_lacks_dialogue_property", traderKvP.Key));

                continue;
            }

            var systemData = new SystemData
            {
                Date = timeUtil.GetBsgDateMailFormat(),
                Time = timeUtil.GetBsgTimeMailFormat(),
                Location = mapId,
            };

            // Send "i will go look for your stuff" message from trader to player
            mailSendService.SendLocalisedNpcMessageToPlayer(
                sessionID,
                traderKvP.Key,
                MessageType.NpcTraderMessage,
                randomUtil.GetArrayValue(dialogueTemplates["insuranceStart"] ?? ["INSURANCE START MESSAGE MISSING"]),
                null,
                timeUtil.GetHoursAsSeconds((int)globals.Configuration?.Insurance?.MaxStorageTimeInHour),
                systemData
            );

            // Store insurance to send to player later in profile
            // Store insurance return details in profile + "hey i found your stuff, here you go!" message details to send to player at a later date
            saveServer
                .GetProfile(sessionID)
                .InsuranceList.Add(
                    new Insurance
                    {
                        ScheduledTime = (int)GetInsuranceReturnTimestamp(pmcData, traderBase),
                        TraderId = traderKvP.Key,
                        MaxStorageTime = (int)GetMaxInsuranceStorageTime(traderBase),
                        SystemData = systemData,
                        MessageType = MessageType.InsuranceReturn,
                        MessageTemplateId = randomUtil.GetArrayValue(dialogueTemplates["insuranceFound"]),
                        Items = GetInsurance(sessionID)[traderKvP.Key],
                    }
                );
        }

        ResetInsurance(sessionID);
    }

    /// <summary>
    ///     Get a timestamp of when insurance items should be sent to player based on trader used to insure
    ///     Apply insurance return bonus if found in profile
    /// </summary>
    /// <param name="pmcData">Player profile</param>
    /// <param name="trader">Trader base used to insure items</param>
    /// <returns>Timestamp to return items to player in seconds</returns>
    protected double GetInsuranceReturnTimestamp(PmcData pmcData, TraderBase trader)
    {
        // If override in config is non-zero, use that instead of trader values
        if (InsuranceConfig.ReturnTimeOverrideSeconds > 0)
        {
            if (logger.IsLogEnabled(LogLevel.Debug))
            {
                logger.Debug($"Insurance override used: returning in {InsuranceConfig.ReturnTimeOverrideSeconds} seconds");
            }

            return timeUtil.GetTimeStamp() + InsuranceConfig.ReturnTimeOverrideSeconds;
        }

        var insuranceReturnTimeBonusSum = pmcData.GetBonusValueFromProfile(BonusType.InsuranceReturnTime);

        // A negative bonus implies a faster return, since we subtract later, invert the value here
        var insuranceReturnTimeBonusPercent = -(insuranceReturnTimeBonusSum / 100);

        var traderMinReturnAsSeconds = trader.Insurance.MinReturnHour * TimeUtil.OneHourAsSeconds;
        var traderMaxReturnAsSeconds = trader.Insurance.MaxReturnHour * TimeUtil.OneHourAsSeconds;
        var randomisedReturnTimeSeconds = randomUtil.GetDouble(traderMinReturnAsSeconds.Value, traderMaxReturnAsSeconds.Value);

        // Check for Mark of The Unheard in players special slots (only slot item can fit)
        var globals = databaseService.GetGlobals();
        var hasMarkOfUnheard = itemHelper.HasItemWithTpl(pmcData.Inventory.Items, ItemTpl.MARKOFUNKNOWN_MARK_OF_THE_UNHEARD, "SpecialSlot");
        if (hasMarkOfUnheard)
        // Reduce return time by globals multiplier value
        {
            randomisedReturnTimeSeconds *= globals.Configuration.Insurance.CoefOfHavingMarkOfUnknown;
        }

        // EoD has 30% faster returns
        if (globals.Configuration.Insurance.EditionSendingMessageTime.TryGetValue(pmcData.Info.GameVersion, out var editionModifier))
        {
            randomisedReturnTimeSeconds *= editionModifier.Multiplier;
        }

        // Calculate the final return time based on our bonus percent
        var finalReturnTimeSeconds = randomisedReturnTimeSeconds * (1d - insuranceReturnTimeBonusPercent);
        return timeUtil.GetTimeStamp() + finalReturnTimeSeconds;
    }

    protected double GetMaxInsuranceStorageTime(TraderBase traderBase)
    {
        if (InsuranceConfig.StorageTimeOverrideSeconds > 0)
        // Override exists, use instead of traders value
        {
            return InsuranceConfig.StorageTimeOverrideSeconds;
        }

        return timeUtil.GetHoursAsSeconds((int)traderBase.Insurance.MaxStorageTime);
    }

    /// <summary>
    ///     Store lost gear post-raid inside profile, ready for later code to pick it up and mail it
    /// </summary>
    /// <param name="sessionId">Player/session id</param>
    /// <param name="equipmentPkg">Gear to store - generated by GetGearLostInRaid()</param>
    public void StoreGearLostInRaidToSendLater(MongoId sessionId, List<InsuranceEquipmentPkg> equipmentPkg)
    {
        // Process all insured items lost in-raid
        foreach (var gear in equipmentPkg)
        {
            AddGearToSend(gear);
        }
    }

    /// <summary>
    ///     For the passed in items, find the trader it was insured against
    /// </summary>
    /// <param name="sessionId">Session id</param>
    /// <param name="lostInsuredItems">Insured items lost in a raid</param>
    /// <param name="pmcProfile">Player profile</param>
    /// <returns>InsuranceEquipmentPkg list</returns>
    public List<InsuranceEquipmentPkg> MapInsuredItemsToTrader(MongoId sessionId, IEnumerable<Item> lostInsuredItems, PmcData pmcProfile)
    {
        List<InsuranceEquipmentPkg> result = [];

        foreach (var lostItem in lostInsuredItems)
        {
            var insuranceDetails = pmcProfile.InsuredItems.FirstOrDefault(insuredItem => insuredItem.ItemId == lostItem.Id);
            if (insuranceDetails is null)
            {
                logger.Error($"unable to find insurance details for item id: {lostItem.Id} with tpl: {lostItem.Template}");

                continue;
            }

            if (ItemCannotBeLostOnDeath(lostItem, pmcProfile.Inventory.Items))
            {
                continue;
            }

            // Add insured item + details to return array
            result.Add(
                new InsuranceEquipmentPkg
                {
                    SessionId = sessionId,
                    ItemToReturnToPlayer = lostItem,
                    PmcData = pmcProfile,
                    TraderId = insuranceDetails.TId,
                }
            );
        }

        return result;
    }

    /// <summary>
    ///     Some items should never be returned in insurance but BSG send them in the request
    /// </summary>
    /// <param name="lostItem">Item being returned in insurance</param>
    /// <param name="inventoryItems">Player inventory</param>
    /// <returns>True if item</returns>
    protected bool ItemCannotBeLostOnDeath(Item lostItem, IEnumerable<Item> inventoryItems)
    {
        if (lostItem.SlotId?.StartsWith("specialslot", StringComparison.OrdinalIgnoreCase) ?? false)
        {
            return true;
        }

        // We check secure container items even tho they are omitted from lostInsuredItems, just in case
        if (lostItem.ItemIsInsideContainer("SecuredContainer", inventoryItems))
        {
            return true;
        }

        return false;
    }

    /// <summary>
    ///     Add gear item to InsuredItems list in player profile
    /// </summary>
    /// <param name="gear">Gear to send</param>
    protected void AddGearToSend(InsuranceEquipmentPkg gear)
    {
        var sessionId = gear.SessionId;
        var pmcData = gear.PmcData;
        var itemToReturnToPlayer = gear.ItemToReturnToPlayer;
        var traderId = gear.TraderId;

        // Ensure insurance array is init
        if (!InsuranceDictionaryExists(sessionId))
        {
            ResetInsurance(sessionId);
        }

        // init trader insurance array
        if (!InsuranceTraderArrayExists(sessionId, traderId))
        {
            ResetInsuranceTraderArray(sessionId, traderId);
        }

        AddInsuranceItemToArray(sessionId, traderId, itemToReturnToPlayer);

        // Remove item from insured items array as it has been processed
        pmcData.InsuredItems = pmcData.InsuredItems.Where(item => item.ItemId != itemToReturnToPlayer.Id).ToList();
    }

    /// <summary>
    ///     Does insurance exist for a player and by trader
    /// </summary>
    /// <param name="sessionId">Player id (session id)</param>
    /// <param name="traderId">Trader items insured with</param>
    /// <returns>True if exists</returns>
    protected bool InsuranceTraderArrayExists(MongoId sessionId, MongoId traderId)
    {
        if (!Insured.TryGetValue(sessionId, out var value))
        {
            return false;
        }

        return value?.GetValueOrDefault(traderId) is not null;
    }

    /// <summary>
    ///     Empty out list holding insured items by sessionId + traderId
    /// </summary>
    /// <param name="sessionId">Player id (session id)</param>
    /// <param name="traderId">Trader items insured with</param>
    public void ResetInsuranceTraderArray(MongoId sessionId, MongoId traderId)
    {
        Insured[sessionId][traderId] = [];
    }

    /// <summary>
    ///     Store insured item
    /// </summary>
    /// <param name="sessionId">Player id (session id)</param>
    /// <param name="traderId">Trader item insured with</param>
    /// <param name="itemToAdd">Insured item (with children)</param>
    public void AddInsuranceItemToArray(MongoId sessionId, MongoId traderId, Item itemToAdd)
    {
        Insured[sessionId][traderId].Add(itemToAdd);
    }

    /// <summary>
    ///     Get price of insurance * multiplier from config
    /// </summary>
    /// <param name="pmcData">Player profile</param>
    /// <param name="inventoryItem">Item to be insured</param>
    /// <param name="traderId">Trader item is insured with</param>
    /// <returns>price in roubles</returns>
    public double GetRoublePriceToInsureItemWithTrader(PmcData? pmcData, Item inventoryItem, MongoId traderId)
    {
        var price =
            itemHelper.GetStaticItemPrice(inventoryItem.Template)
            * (traderHelper.GetLoyaltyLevel(traderId, pmcData).InsurancePriceCoefficient / 100);

        return Math.Ceiling(price ?? 1);
    }
}