using Core.Annotations;
using Core.Helpers;
using Core.Models.Eft.Common;
using Core.Models.Eft.Common.Tables;
using Core.Models.Enums;
using Core.Models.Spt.Config;
using Core.Servers;
using Core.Services;
using Core.Utils;
using Core.Utils.Cloners;
using ILogger = Core.Models.Utils.ILogger;

namespace Core.Generators;

[Injectable]
public class PlayerScavGenerator
{
    private readonly ILogger _logger;
    private readonly RandomUtil _randomUtil;
    private readonly DatabaseService _databaseService;
    private readonly HashUtil _hashUtil;
    private readonly ItemHelper _itemHelper;
    private readonly BotGeneratorHelper _botGeneratorHelper;
    private readonly SaveServer _saveServer;
    private readonly ProfileHelper _profileHelper;
    private readonly BotHelper _botHelper;
    private readonly FenceService _fenceService;
    private readonly BotLootCacheService _botLootCacheService;
    private readonly LocalisationService _localisationService;
    private readonly BotGenerator _botGenerator;
    private readonly ConfigServer _configServer;
    private readonly ICloner _cloner;
    private readonly TimeUtil _timeUtil;

    private PlayerScavConfig _playerScavConfig;

    public PlayerScavGenerator
    (
        ILogger logger,
        RandomUtil randomUtil,
        DatabaseService databaseService,
        HashUtil hashUtil,
        ItemHelper itemHelper,
        BotGeneratorHelper botGeneratorHelper,
        SaveServer saveServer,
        ProfileHelper profileHelper,
        BotHelper botHelper,
        FenceService fenceService,
        BotLootCacheService botLootCacheService,
        LocalisationService localisationService,
        BotGenerator botGenerator,
        ConfigServer configServer,
        ICloner cloner,
        TimeUtil timeUtil
    )
    {
        _logger = logger;
        _randomUtil = randomUtil;
        _databaseService = databaseService;
        _hashUtil = hashUtil;
        _itemHelper = itemHelper;
        _botGeneratorHelper = botGeneratorHelper;
        _saveServer = saveServer;
        _profileHelper = profileHelper;
        _botHelper = botHelper;
        _fenceService = fenceService;
        _botLootCacheService = botLootCacheService;
        _localisationService = localisationService;
        _botGenerator = botGenerator;
        _configServer = configServer;
        _cloner = cloner;
        _timeUtil = timeUtil;

        _playerScavConfig = configServer.GetConfig<PlayerScavConfig>(ConfigTypes.PLAYERSCAV);
    }

    /// <summary>
    /// Update a player profile to include a new player scav profile
    /// </summary>
    /// <param name="sessionID">session id to specify what profile is updated</param>
    /// <returns>profile object</returns>
    public PmcData Generate(string sessionID)
    {
        // get karma level from profile
        var profile = _saveServer.GetProfile(sessionID);
        var profileCharactersClone = _cloner.Clone(profile.CharacterData);
        var pmcDataClone = _cloner.Clone(profileCharactersClone.PmcData);
        var existingScavDataClone = _cloner.Clone(profileCharactersClone.ScavData);

        var scavKarmaLevel = GetScavKarmaLevel(pmcDataClone);

        // use karma level to get correct karmaSettings
        var playerScavKarmaSettings = _playerScavConfig.KarmaLevel[scavKarmaLevel.ToString()];
        if (playerScavKarmaSettings == null)
            _logger.Error(_localisationService.GetText("scav-missing_karma_settings", scavKarmaLevel));

        _logger.Debug($"generated player scav loadout with karma level {scavKarmaLevel}");

        // Edit baseBotNode values
        var baseBotNode = ConstructBotBaseTemplate(playerScavKarmaSettings.BotTypeForLoot);
        AdjustBotTemplateWithKarmaSpecificSettings(playerScavKarmaSettings, baseBotNode);

        var scavData = (PmcData)_botGenerator.GeneratePlayerScav(
            sessionID,
            playerScavKarmaSettings.BotTypeForLoot.ToLower(),
            "easy",
            baseBotNode,
            pmcDataClone);

        // Remove cached bot data after scav was generated
        _botLootCacheService.ClearCache();

        // Add scav metadata
        scavData.Savage = null;
        scavData.Aid = pmcDataClone.Aid;
        scavData.TradersInfo = pmcDataClone.TradersInfo;
        scavData.Info.Settings = new();
        scavData.Info.Bans = [];
        scavData.Info.RegistrationDate = pmcDataClone.Info.RegistrationDate;
        scavData.Info.GameVersion = pmcDataClone.Info.GameVersion;
        scavData.Info.MemberCategory = MemberCategory.UNIQUE_ID;
        scavData.Info.LockedMoveCommands = true;
        scavData.RagfairInfo = pmcDataClone.RagfairInfo;
        scavData.UnlockedInfo = pmcDataClone.UnlockedInfo;

        // Persist previous scav data into new scav
        scavData.Id = existingScavDataClone.Id ?? pmcDataClone.Savage;
        scavData.SessionId = existingScavDataClone.SessionId ?? pmcDataClone.SessionId;
        scavData.Skills = GetScavSkills(existingScavDataClone);
        scavData.Stats = GetScavStats(existingScavDataClone);
        scavData.Info.Level = GetScavLevel(existingScavDataClone);
        scavData.Info.Experience = GetScavExperience(existingScavDataClone);
        scavData.Quests = existingScavDataClone.Quests ?? [];
        scavData.TaskConditionCounters = existingScavDataClone.TaskConditionCounters ?? new();
        scavData.Notes = existingScavDataClone.Notes ?? new() { DataNotes = new() };
        scavData.WishList = existingScavDataClone.WishList ?? new();
        scavData.Encyclopedia = pmcDataClone.Encyclopedia ?? new();

        // Add additional items to player scav as loot
        AddAdditionalLootToPlayerScavContainers(playerScavKarmaSettings.LootItemsToAddChancePercent, scavData, [
            "TacticalVest",
            "Pockets",
            "Backpack"
        ]);

        // Remove secure container
        scavData = _profileHelper.RemoveSecureContainer(scavData);

        // set cooldown timer
        scavData = SetScavCooldownTimer(scavData, pmcDataClone);

        // add scav to profile
        _saveServer.GetProfile(sessionID).CharacterData.ScavData = scavData;

        return scavData;
    }

    /// <summary>
    /// Add items picked from `playerscav.lootItemsToAddChancePercent`
    /// </summary>
    /// <param name="possibleItemsToAdd">dict of tpl + % chance to be added</param>
    /// <param name="scavData"></param>
    /// <param name="containersToAddTo">Possible slotIds to add loot to</param>
    protected void AddAdditionalLootToPlayerScavContainers(Dictionary<string, double> possibleItemsToAdd, BotBase scavData, List<string> containersToAddTo)
    {
        foreach (var tpl in possibleItemsToAdd)
        {
            var shouldAdd = _randomUtil.GetChance100(tpl.Value);
            if (!shouldAdd)
                continue;

            var itemResult = _itemHelper.GetItem(tpl.Key);
            if (!itemResult.Key)
            {
                _logger.Warning(_localisationService.GetText("scav-unable_to_add_item_to_player_scav", tpl));
                continue;
            }

            var itemTemplate = itemResult.Value;
            var itemsToAdd = new List<Item>()
            {
                new Item()
                {
                    Id = _hashUtil.Generate(),
                    Template = itemTemplate.Id,
                    Upd = _botGeneratorHelper.GenerateExtraPropertiesForItem(itemTemplate)
                }
            };

            var result = _botGeneratorHelper.AddItemWithChildrenToEquipmentSlot(
                containersToAddTo,
                itemsToAdd[0].Id,
                itemTemplate.Id,
                itemsToAdd,
                scavData.Inventory);

            if (result != ItemAddedResult.SUCCESS)
                _logger.Debug($"Unable to add keycard to bot. Reason: {result.ToString()}");
        }
    }

    /// <summary>
    /// Get the scav karama level for a profile
    /// Is also the fence trader rep level
    /// </summary>
    /// <param name="pmcData">pmc profile</param>
    /// <returns>karma level</returns>
    protected double GetScavKarmaLevel(PmcData pmcData)
    {
        // can be empty during profile creation
        if (!pmcData.TradersInfo.TryGetValue(Traders.FENCE, out var fenceInfo))
        {
            _logger.Warning(_localisationService.GetText("scav-missing_karma_level_getting_default"));
            return 0;
        }

        if (fenceInfo.Standing > 6)
            return 6;

        return Math.Floor(fenceInfo.Standing ?? 0);
    }

    /// <summary>
    /// Get a baseBot template
    /// If the parameter doesnt match "assault", take parts from the loot type and apply to the return bot template
    /// </summary>
    /// <param name="botTypeForLoot">bot type to use for inventory/chances</param>
    /// <returns>IBotType object</returns>
    protected BotType ConstructBotBaseTemplate(string botTypeForLoot)
    {
        var baseScavType = "assault";
        var asssaultBase = _cloner.Clone(_botHelper.GetBotTemplate(baseScavType));

        // Loot bot is same as base bot, return base with no modification
        if (botTypeForLoot == baseScavType)
            return asssaultBase;

        var lootBase = _cloner.Clone(_botHelper.GetBotTemplate(botTypeForLoot));
        asssaultBase.BotInventory = lootBase.BotInventory;
        asssaultBase.BotChances = lootBase.BotChances;
        asssaultBase.BotGeneration = lootBase.BotGeneration;

        return asssaultBase;
    }

    /// <summary>
    /// Adjust equipment/mod/item generation values based on scav karma levels
    /// </summary>
    /// <param name="karmaSettings">Values to modify the bot template with</param>
    /// <param name="baseBotNode">bot template to modify according to karama level settings</param>
    protected void AdjustBotTemplateWithKarmaSpecificSettings(KarmaLevel karmaSettings, BotType baseBotNode)
    {
        // Adjust equipment chance values
        foreach (var equipmentKvP in karmaSettings.Modifiers.Equipment) {

            // Adjustment value zero, nothing to do
            if (equipmentKvP.Value == 0)
            {
                continue;
            }

            // Try add new key with value
            if (!baseBotNode.BotChances.EquipmentChances.TryAdd(equipmentKvP.Key, equipmentKvP.Value))
            {
                // Unable to add new, update existing
                baseBotNode.BotChances.EquipmentChances[equipmentKvP.Key] += equipmentKvP.Value;
            }
        }

        // Adjust mod chance values
        foreach (var modKvP in karmaSettings.Modifiers.Mod)
        {
            // Adjustment value zero, nothing to do
            if (modKvP.Value == 0)
                continue;

            baseBotNode.BotChances.WeaponModsChances[modKvP.Key] += karmaSettings.Modifiers.Mod[modKvP.Key];
        }

        // Adjust item spawn quantity values
        foreach (var itemLimitKvP in karmaSettings.ItemLimits)
        {
            baseBotNode.BotGeneration.Items[itemLimitKvP.Key] = itemLimitKvP.Value;
        }

        // Blacklist equipment, keyed by equipment slot
        foreach (var equipmentBlacklistKvP in karmaSettings.EquipmentBlacklist) {
            baseBotNode.BotInventory.Equipment.TryGetValue(equipmentBlacklistKvP.Key, out var equipmentDict);
            foreach (var itemToRemove in equipmentBlacklistKvP.Value)
            {
                equipmentDict.Remove(itemToRemove);
            }
        }
    }

    protected Skills GetScavSkills(PmcData scavProfile)
    {
        if (scavProfile?.Skills != null)
            return scavProfile.Skills;

        return GetDefaultScavSkills();
    }

    protected Skills GetDefaultScavSkills()
    {
        return new()
        {
            Common = new(new(), new()),
            Mastering = new(),
            Points = 0
        };
    }

    protected Stats GetScavStats(PmcData scavProfile)
    {
        if (scavProfile?.Stats != null)
            return scavProfile.Stats;

        return _profileHelper.GetDefaultCounters();
    }

    protected int GetScavLevel(PmcData scavProfile)
    {
        // Info can be null on initial account creation
        if (scavProfile?.Info?.Level == null)
            return 1;

        return scavProfile?.Info?.Level ?? 1;
    }

    protected double GetScavExperience(PmcData scavProfile)
    {
        // Info can be null on initial account creation
        if (scavProfile?.Info?.Experience == null)
            return 0;

        return scavProfile?.Info?.Experience ?? 0;
    }

    /// <summary>
    /// Set cooldown till scav is playable
    /// take into account scav cooldown bonus
    /// </summary>
    /// <param name="scavData">scav profile</param>
    /// <param name="pmcData">pmc profile</param>
    /// <returns></returns>
    protected PmcData SetScavCooldownTimer(PmcData scavData, PmcData pmcData)
    {
        // Set cooldown time.
        // Make sure to apply ScavCooldownTimer bonus from Hideout if the player has it.
        var scavLockDuration = _databaseService.GetGlobals().Configuration.SavagePlayCooldown;
        var modifier = 1D;

        foreach (var bonus in pmcData.Bonuses)
        {
            if (bonus.Type == BonusType.ScavCooldownTimer)
            {
                // Value is negative, so add.
                // Also note that for scav cooldown, multiple bonuses stack additively.
                modifier += (bonus?.Value ?? 1) / 100;
            }
        }

        var fenceInfo = _fenceService.GetFenceInfo(pmcData);
        modifier *= fenceInfo.SavageCooldownModifier ?? 1;
        scavLockDuration *= modifier;

        var fullProfile = _profileHelper.GetFullProfile(pmcData?.SessionId);
        if (fullProfile?.ProfileInfo?.Edition.ToLower().StartsWith(AccountTypes.SPT_DEVELOPER) ?? false)
            scavLockDuration = 10;

        if (scavData?.Info != null)
            scavData.Info.SavageLockTime = _timeUtil.GetTimeStamp() / 1000 + (long)scavLockDuration;

        return scavData;
    }
}