using Core.Annotations;
using Core.Models.Eft.Common;
using Core.Models.Eft.Common.Tables;
using Core.Models.Eft.ItemEvent;
using Core.Models.Eft.Quests;
using Core.Models.Spt.Config;
using Core.Models.Spt.Repeatable;
using Core.Generators;
using Core.Helpers;
using Core.Models.Enums;
using Core.Models.Utils;
using Core.Routers;
using Core.Servers;
using Core.Services;
using Core.Utils;
using Core.Utils.Cloners;
using Core.Utils.Extensions;

namespace Core.Controllers;

[Injectable]
public class RepeatableQuestController(
    ISptLogger<RepeatableQuestChangeRequest> _logger,
    TimeUtil _timeUtil,
    HashUtil _hashUtil,
    RandomUtil _randomUtil,
    HttpResponseUtil _responseUtil,
    ProfileHelper _profileHelper,
    ProfileFixerService _profileFixerService,
    LocalisationService _localisationService,
    EventOutputHolder _eventOutputHolder,
    PaymentService _paymentService,
    RepeatableQuestGenerator _repeatableQuestGenerator,
    RepeatableQuestHelper _repeatableQuestHelper,
    QuestHelper _questHelper,
    DatabaseService _databaseService,
    ConfigServer _configServer,
    ICloner _cloner
)
{
    protected QuestConfig _questConfig = _configServer.GetConfig<QuestConfig>();

    public ItemEventRouterResponse ChangeRepeatableQuest(PmcData pmcData, RepeatableQuestChangeRequest info, string sessionId)
    {
        throw new NotImplementedException();
    }

    public List<PmcDataRepeatableQuest> GetClientRepeatableQuests(string sessionID)
    {
        var returnData = new List<PmcDataRepeatableQuest>();
        var fullProfile = _profileHelper.GetFullProfile(sessionID);
        var pmcData = fullProfile.CharacterData.PmcData;
        var currentTime = _timeUtil.GetTimeStamp();

        // Daily / weekly / Daily_Savage
        foreach (var repeatableConfig in _questConfig.RepeatableQuests)
        {
            // Get daily/weekly data from profile, add empty object if missing
            var generatedRepeatables = GetRepeatableQuestSubTypeFromProfile(repeatableConfig, pmcData);
            var repeatableTypeLower = repeatableConfig.Name.ToLower();

            var canAccessRepeatables = CanProfileAccessRepeatableQuests(repeatableConfig, pmcData);
            if (!canAccessRepeatables)
            {
                // Don't send any repeatables, even existing ones
                continue;
            }

            // Existing repeatables are still valid, add to return data and move to next sub-type
            if (currentTime < generatedRepeatables.EndTime - 1)
            {
                returnData.Add(generatedRepeatables);

                _logger.Debug($"[Quest Check] {repeatableTypeLower} quests are still valid.");

                continue;
            }

            // Current time is past expiry time

            // Set endtime to be now + new duration
            generatedRepeatables.EndTime = currentTime + repeatableConfig.ResetTime;
            generatedRepeatables.InactiveQuests = [];
            _logger.Debug($"Generating new {repeatableTypeLower}");

            // Put old quests to inactive (this is required since only then the client makes them fail due to non-completion)
            // Also need to push them to the "inactiveQuests" list since we need to remove them from offraidData.profile.Quests
            // after a raid (the client seems to keep quests internally and we want to get rid of old repeatable quests)
            // and remove them from the PMC's Quests and RepeatableQuests[i].activeQuests
            ProcessExpiredQuests(generatedRepeatables, pmcData);

            // Create dynamic quest pool to avoid generating duplicates
            var questTypePool = GenerateQuestPool(repeatableConfig, pmcData.Info.Level);

            // Add repeatable quests of this loops sub-type (daily/weekly)
            for (var i = 0; i < GetQuestCount(repeatableConfig, pmcData); i++)
            {
                var quest = new RepeatableQuest();
                var lifeline = 0;
                while (quest.Id is null && questTypePool.Types.Count > 0)
                {
                    quest = _repeatableQuestGenerator.GenerateRepeatableQuest(
                        sessionID,
                        pmcData.Info.Level ?? 0,
                        pmcData.TradersInfo,
                        questTypePool,
                        repeatableConfig
                    );
                    lifeline++;
                    if (lifeline > 10)
                    {
                        _logger.Debug("We were stuck in repeatable quest generation. This should never happen. Please report");

                        break;
                    }
                }

                // check if there are no more quest types available
                if (questTypePool.Types.Count == 0)
                {
                    break;
                }

                quest.Side = repeatableConfig.Side;
                generatedRepeatables.ActiveQuests.Add(quest);
            }

            // Nullguard
            fullProfile.SptData.FreeRepeatableRefreshUsedCount ??= new Dictionary<string, int>();


            // Reset players free quest count for this repeatable sub-type as we're generating new repeatables for this group (daily/weekly)
            fullProfile.SptData.FreeRepeatableRefreshUsedCount[repeatableTypeLower] = 0;

            // Create stupid redundant change requirements from quest data
            foreach (var quest in generatedRepeatables.ActiveQuests)
            {
                generatedRepeatables.ChangeRequirement[quest.Id] = new ChangeRequirement
                {
                    ChangeCost = quest.ChangeCost,
                    ChangeStandingCost = _randomUtil.GetArrayValue([0, 0.01]), // Randomise standing cost to replace
                };
            }

            // Reset free repeatable values in player profile to defaults
            generatedRepeatables.FreeChanges = repeatableConfig.FreeChanges;
            generatedRepeatables.FreeChangesAvailable = repeatableConfig.FreeChanges;

            returnData.Add(
                new PmcDataRepeatableQuest
                {
                    Id = repeatableConfig.Id,
                    Name = generatedRepeatables.Name,
                    EndTime = generatedRepeatables.EndTime,
                    ActiveQuests = generatedRepeatables.ActiveQuests,
                    InactiveQuests = generatedRepeatables.InactiveQuests,
                    ChangeRequirement = generatedRepeatables.ChangeRequirement,
                    FreeChanges = generatedRepeatables.FreeChanges,
                    FreeChangesAvailable = generatedRepeatables.FreeChanges,
                }
            );
        }

        return returnData;
    }

    private PmcDataRepeatableQuest GetRepeatableQuestSubTypeFromProfile(RepeatableQuestConfig repeatableConfig, PmcData pmcData)
    {
        // Get from profile, add if missing
        var repeatableQuestDetails = pmcData.RepeatableQuests.FirstOrDefault(
            (repeatable) => repeatable.Name == repeatableConfig.Name
        );
        if (repeatableQuestDetails is not null)
        {
            // Not in profile, generate
            var hasAccess = _profileHelper.HasAccessToRepeatableFreeRefreshSystem(pmcData);
            repeatableQuestDetails = new PmcDataRepeatableQuest()
            {
                Id = repeatableConfig.Id,
                Name = repeatableConfig.Name,
                ActiveQuests = [],
                InactiveQuests = [],
                EndTime = 0,
                ChangeRequirement = { },
                FreeChanges = hasAccess ? repeatableConfig.FreeChanges : 0,
                FreeChangesAvailable = hasAccess ? repeatableConfig.FreeChangesAvailable : 0,
            };

            // Add base object that holds repeatable data to profile
            pmcData.RepeatableQuests.Add(repeatableQuestDetails);
        }

        return repeatableQuestDetails;
    }

    private bool CanProfileAccessRepeatableQuests(RepeatableQuestConfig repeatableConfig, PmcData pmcData)
    {
        // PMC and daily quests not unlocked yet
        if (repeatableConfig.Side == "Pmc" && !PlayerHasDailyPmcQuestsUnlocked(pmcData, repeatableConfig))
        {
            return false;
        }

        // Scav and daily quests not unlocked yet
        if (repeatableConfig.Side == "Scav" && !PlayerHasDailyScavQuestsUnlocked(pmcData))
        {
            _logger.Debug("Daily scav quests still locked, Intel center not built");

            return false;
        }

        return true;
    }

    /**
     * Does player have daily pmc quests unlocked
     * @param pmcData Player profile to check
     * @param repeatableConfig Config of daily type to check
     * @returns True if unlocked
     */
    private bool PlayerHasDailyPmcQuestsUnlocked(PmcData pmcData, RepeatableQuestConfig repeatableConfig)
    {
        return pmcData.Info.Level >= repeatableConfig.MinPlayerLevel;
    }

    /**
     * Does player have daily scav quests unlocked
     * @param pmcData Player profile to check
     * @returns True if unlocked
     */
    private bool PlayerHasDailyScavQuestsUnlocked(PmcData pmcData)
    {
        return (
            pmcData?.Hideout?.Areas?.FirstOrDefault((hideoutArea) => hideoutArea.Type == HideoutAreas.INTEL_CENTER)?.Level >= 1
        );
    }

    private void ProcessExpiredQuests(PmcDataRepeatableQuest generatedRepeatables, PmcData pmcData)
    {
        var questsToKeep = new List<RepeatableQuest>();
        foreach (var activeQuest in generatedRepeatables.ActiveQuests)
        {
            var questStatusInProfile = pmcData.Quests.FirstOrDefault((quest) => quest.QId == activeQuest.Id);
            if (questStatusInProfile is null)
            {
                continue;
            }

            // Keep finished quests in list so player can hand in
            if (questStatusInProfile.Status == QuestStatusEnum.AvailableForFinish)
            {
                questsToKeep.Add(activeQuest);
                _logger.Debug($"Keeping repeatable quest: ${activeQuest.Id} in activeQuests since it is available to hand in");

                continue;
            }

            // Clean up quest-related counters being left in profile
            _profileFixerService.RemoveDanglingConditionCounters(pmcData);

            // Remove expired quest from pmc.quest array
            pmcData.Quests = pmcData.Quests.Where((quest) => quest.QId != activeQuest.Id).ToList();

            // Store in inactive array
            generatedRepeatables.InactiveQuests.Add(activeQuest);
        }

        generatedRepeatables.ActiveQuests = questsToKeep;
    }

    private QuestTypePool GenerateQuestPool(RepeatableQuestConfig repeatableConfig, int? pmcLevel)
    {
        var questPool = CreateBaseQuestPool(repeatableConfig);

        // Get the allowed locations based on the PMC's level
        var locations = GetAllowedLocationsForPmcLevel(repeatableConfig.Locations, pmcLevel.Value);

        // Populate Exploration and Pickup quest locations
        foreach (var (location, value) in locations)
        {
            if (location != ELocationName.any)
            {
                questPool.Pool.Exploration.Locations[location] = value;
                questPool.Pool.Pickup.Locations[location] = value;
            }
        }

        // Add "any" to pickup quest pool
        questPool.Pool.Pickup.Locations[ELocationName.any] = ["any"];

        var eliminationConfig = _repeatableQuestHelper.GetEliminationConfigByPmcLevel(pmcLevel.Value, repeatableConfig);
        var targetsConfig = _repeatableQuestHelper.ProbabilityObjectArray<Target, string, BossInfo>(eliminationConfig.Targets);

        // Populate Elimination quest targets and their locations
        foreach (var targetKvP in targetsConfig)
        {
            // Target is boss
            if (targetKvP.Data.IsBoss.GetValueOrDefault(false))
            {
                questPool.Pool.Elimination.Targets.TryGetValue(targetKvP.Key, out var targets);
                targets.Locations.Clear();
                targets.Locations.Add("any");
            }
            else
            {
                // Non-boss targets
                var possibleLocations = locations;

                questPool.Pool.Elimination.Targets.TryGetValue(targetKvP.Key, out var targets);
                var targetsClone = _cloner.Clone(targets);
                var allowedLocations = targetKvP.Key == "Savage"
                    ? targetsClone.Locations.Where((location) => location != "laboratory") // Exclude labs for Savage targets.
                    : targetsClone.Locations;


                targets.Locations.Clear();
                targets.Locations.AddRange(allowedLocations);
            }
        }

        return questPool;
    }

    private QuestTypePool CreateBaseQuestPool(RepeatableQuestConfig repeatableConfig)
    {
        return new QuestTypePool
        {
            Types = _cloner.Clone(repeatableConfig.Types),
            Pool = new QuestPool
            {
                Exploration = new ExplorationPool
                {
                    Locations = new Dictionary<ELocationName, List<string>>()
                },
                Elimination = new EliminationPool
                {
                    Targets = new Dictionary<string, TargetLocation>()
                },
                Pickup = new ExplorationPool
                {
                    Locations = new Dictionary<ELocationName, List<string>>()
                }
            },
        };
    }

    private Dictionary<ELocationName, List<string>> GetAllowedLocationsForPmcLevel(Dictionary<ELocationName, List<string>> locations, int pmcLevel)
    {
        var allowedLocation = new Dictionary<ELocationName, List<string>>();

        foreach (var (location, value) in locations)
        {
            var locationNames = new List<string>();
            foreach (var locationName in value)
            {
                if (IsPmcLevelAllowedOnLocation(locationName, pmcLevel))
                {
                    locationNames.Add(locationName);
                }
            }

            if (locationNames.Count > 0)
            {
                allowedLocation[location] = locationNames;
            }
        }

        return allowedLocation;
    }

    /**
 * Return true if the given pmcLevel is allowed on the given location
 * @param location The location name to check
 * @param pmcLevel The level of the pmc
 * @returns True if the given pmc level is allowed to access the given location
 */
    protected bool IsPmcLevelAllowedOnLocation(string location, int pmcLevel)
    {
        // All PMC levels are allowed for 'any' location requirement
        if (location == ELocationName.any.ToString())
        {
            return true;
        }

        var locationBase = _databaseService.GetLocation(location.ToLower())?.Base;
        if (locationBase is not null)
        {
            return true;
        }

        return pmcLevel <= locationBase.RequiredPlayerLevelMax && pmcLevel >= locationBase.RequiredPlayerLevelMin;
    }

    /// <summary>
    /// Get count of repeatable quests profile should have access to
    /// </summary>
    /// <param name="repeatableConfig"></param>
    /// <param name="pmcData">Player profile</param>
    /// <returns>Quest count</returns>
    private int GetQuestCount(RepeatableQuestConfig repeatableConfig, PmcData pmcData)
    {
        var questCount = repeatableConfig.NumQuests.GetValueOrDefault(0);
        if (questCount == 0)
        {
            _logger.Warning($"Repeatable {repeatableConfig.Name} quests have a count of 0");
        }

        // Add elite bonus to daily quests
        if (repeatableConfig.Name.ToLower() == "daily" && _profileHelper.HasEliteSkillLevel(SkillTypes.Charisma, pmcData)
           )
        {
            // Elite charisma skill gives extra daily quest(s)
            questCount += _databaseService
                .GetGlobals()
                .Configuration
                .SkillsSettings
                .Charisma
                .BonusSettings
                .EliteBonusSettings
                .RepeatableQuestExtraCount
                .GetValueOrDefault(0);
        }

        return questCount;
    }
}