using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Timers;
using GTANetworkAPI;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using ReallifeGamemode.Database.Entities;
using ReallifeGamemode.Database.Models;
using ReallifeGamemode.Server.Extensions;
using ReallifeGamemode.Server.Inventory.Interfaces;
using ReallifeGamemode.Server.Inventory.Items;
using ReallifeGamemode.Server.Services;
using ReallifeGamemode.Server.Types;
using ReallifeGamemode.Server.Util;

namespace ReallifeGamemode.Server.Managers
{
  public class HanfManager : BaseScript
  {
    /// <summary>
    /// Punkte zum Samen kaufen
    /// </summary>
    private readonly static List<Vector3> _seedsBuyPoints = new List<Vector3>();

    private readonly static List<Vector3> _cannabisSellPoints = new List<Vector3>();

    /// <summary>
    /// Aktueller Samen-Preis
    /// </summary>
    public static int SEED_PRICE = 0;

    private const int SEED_PRICE_MIN = 40;
    private const int SEED_PRICE_MAX = 75;

    /// <summary>
    /// Aktueller Hanf-Verkaufspreis
    /// </summary>
    public static int CANNABIS_PRICE = 0;

    private const int CANNABIS_PRICE_MIN = 50;
    private const int CANNABIS_PRICE_MAX = 125;

    /// <summary>
    /// Wie viele Samen ein Spieler pro Tag maximal kaufen darf
    /// </summary>
    private const int MAX_SEEDS_PER_DAY = 50;

    /// <summary>
    /// Wie viel Cannabis man für einen Joint braucht
    /// </summary>
    private const int CANNABIS_NEEDED_FOR_JOINT = 10;

    /// <summary>
    /// Flag, ob der Verarbeiter aktuell benutzt wird
    /// </summary>
    private static bool _manufacturerCurrentlyUsed = false;

    /// <summary>
    /// Marihuana -> Joint
    /// </summary>
    private readonly static Vector3 _jointManufacturerPoint = new Vector3(-127.726105, 1921.5142, 197.31104);

    /// <summary>
    /// Animations-ID des Verarbeitens
    /// </summary>
    private const string _manufacturerAnim = "manufacturJoint";

    /// <summary>
    /// Data-Key, ob der Spieler grade eine Pflanze anpflanzt
    /// </summary>
    private const string PLAYER_CURRENTLY_PLANTING_DATA_KEY = "isPlantingCannabis";

    /// <summary>
    /// Ab welcher Zeit Pflanzen verwelken
    /// </summary>
    private static readonly TimeSpan MAX_PLANT_TIME = TimeSpan.FromHours(6);

    private static readonly TimeSpan MIN_PLANT_TIME_TO_HARVEST = TimeSpan.FromHours(4);

    /// <summary>
    /// Timer der den Status des Verarbeiters zurücksetzt
    /// </summary>
    private static Timer _manufacturerDoneTimer = new Timer(TimeSpan.FromSeconds(10).TotalMilliseconds);

    /// <summary>
    /// Zufallsgenerator für weibliche Pflanze und erhaltenes Cannabis
    /// </summary>
    private static Random _random = new Random();

    private static List<CannabisData> _currentCannabisData = new List<CannabisData>();
    public static readonly Vector3 ASSERVATENKAMMER_POSITION = new Vector3(-5.45, -670.03, 32.33);

    static HanfManager()
    {
      _manufacturerDoneTimer.Elapsed += ManufacturerDoneTimerCallback;
    }

    /// <summary>
    /// Ladefunktion zum 
    /// </summary>
    public static void Load()
    {
      var priceRandom = new Random();

      SEED_PRICE = priceRandom.Next(SEED_PRICE_MIN, SEED_PRICE_MAX + 1);
      CANNABIS_PRICE = priceRandom.Next(CANNABIS_PRICE_MIN, CANNABIS_PRICE_MAX + 1);
      logger.LogInformation("Generated hanf prices: seed = {0}, cannabis = {1}", SEED_PRICE, CANNABIS_PRICE);

      _seedsBuyPoints.Add(new Vector3(-30.21876, -585.3222, 17.917326));
      _seedsBuyPoints.Add(new Vector3(-680.89386, -634.6783, 25.29923));
      _seedsBuyPoints.Add(new Vector3(-1310.743, -608.9064, 29.382874));
      _seedsBuyPoints.Add(new Vector3(-758.6156, -1595.2686, 6.302392));
      _seedsBuyPoints.Add(new Vector3(-441.0504, 1595.4435, 358.4195));

      ColShape colShape = null;

      foreach (Vector3 buyPoint in _seedsBuyPoints)
      {
        colShape = NAPI.ColShape.CreateSphereColShape(buyPoint, 10.0f);
        colShape.OnEntityEnterColShape += OnSeedBuyRangeColShapeEnter;
      }

      _cannabisSellPoints.Add(new Vector3(2220.04, 5614.24, 54.72));
      _cannabisSellPoints.Add(new Vector3(201.77, 2442.06, 60.45));
      _cannabisSellPoints.Add(new Vector3(155.87, -3103.26, 7.03));

      foreach (Vector3 sellPoint in _cannabisSellPoints)
      {
        colShape = NAPI.ColShape.CreateSphereColShape(sellPoint, 10.0f);
        colShape.OnEntityEnterColShape += OnCannabisSellRangeColShapeEnter;
      }

      NAPI.Marker.CreateMarker(GTANetworkAPI.MarkerType.VerticalCylinder, ASSERVATENKAMMER_POSITION.Subtract(new Vector3(0, 0, 3.0)), new Vector3(), new Vector3(), 3.0f, Colors.White);
      NAPI.TextLabel.CreateTextLabel("Asservatenkammer~n~Drücke ~y~E~s~, um den ~y~Riot~s~ zu entladen", ASSERVATENKAMMER_POSITION, 10.0f, 10.0f, 0, Colors.White);

      using var dbContext = new DatabaseContext();
      HarvestRottenPlants(dbContext);
      UpdateHanfWorldData(dbContext);

      Timer updateHanfDataTimer = new Timer(TimeSpan.FromMinutes(1).TotalMilliseconds);
      updateHanfDataTimer.Elapsed += UpdateHanfDataTimer_Elapsed;
      updateHanfDataTimer.Start();
    }

    private static void OnCannabisSellRangeColShapeEnter(ColShape colShape, Player player)
    {
      if (!player.IsLoggedIn())
      {
        return;
      }

      var user = player.GetUser();
      if (user?.Faction?.StateOwned == true || user.Faction?.GangOwned == false)
      {
        return;
      }

      ChatService.SendMessage(player, $"Fremder sagt: Pssst.. Hier kannst du dein Brokkoli loswerden.");
    }

    private static void HarvestRottenPlants(DatabaseContext dbContext)
    {
      var rottenPlants = dbContext.CannabisPlants.Where(p => EF.Functions.DateDiffHour(p.PlantDate, DateTime.Now) > MAX_PLANT_TIME.TotalHours);
      foreach (var plant in rottenPlants)
      {
        plant.Harvested = true;
      }
      dbContext.SaveChanges();
    }

    private static void UpdateHanfDataTimer_Elapsed(object sender, ElapsedEventArgs e)
    {
      NAPI.Task.Run(() =>
      {
        using var dbContext = new DatabaseContext();
        UpdateHanfWorldData(dbContext);
      });
    }

    private static void OnSeedBuyRangeColShapeEnter(ColShape colShape, Player player)
    {
      if (!player.IsLoggedIn())
      {
        return;
      }

      var user = player.GetUser();
      if (user?.Faction?.StateOwned == true || user.Faction?.GangOwned == false)
      {
        return;
      }

      ChatService.SendMessage(player, $"Fremder sagt: Pssst.. Willst du Samen kaufen?");
    }

    internal static bool IsPlayerNearSeedBuyPoint(Player player)
    {
      return _seedsBuyPoints.Any(p => player.Position.DistanceTo(p) <= 2.5f);
    }

    internal static bool IsPlayerNearJointManufacturer(Player player)
    {
      return _jointManufacturerPoint.DistanceTo(player.Position) <= 2.5f;
    }

    internal static void StartCannabisPlanting(Player player)
    {
      player.ToggleInventory(InventoryToggleOption.HIDE);

      if (!player.IsAlive())
      {
        return;
      }

      var dbContext = new DatabaseContext();
      var user = player.GetUser(dbContext);
      if (user.Faction?.StateOwned ?? false || user.Faction?.GangOwned == false)
      {
        player.SendNotification("~r~Du darfst keine Hanfsamen einpflanzen");
        return;
      }

      if (player.HasData(PLAYER_CURRENTLY_PLANTING_DATA_KEY) && player.GetData<bool>(PLAYER_CURRENTLY_PLANTING_DATA_KEY))
      {
        player.SendNotification("~r~Du pflanzt aktuell schon einen Hanfsamen ein");
        return;
      }

      player.SetData(PLAYER_CURRENTLY_PLANTING_DATA_KEY, true);

      player.TriggerEvent("SERVER:Hanf_StartPlanting");
    }

    [RemoteEvent("CLIENT:Hanf_PlantHanf")]
    public void HanfManagerPlantHanf(Player player, float x, float y, float z)
    {
      player.ResetData(PLAYER_CURRENTLY_PLANTING_DATA_KEY);

      IItem cannabisSeedItem = InventoryManager.GetItem<CannabisSeeds>();
      UserItem userCannabisSeedsItem = InventoryManager.UserHasThisItem(player, cannabisSeedItem.Id);
      if (userCannabisSeedsItem == null)
      {
        player.SendNotification("~r~Du hast keine Samen mehr");
        return;
      }

      logger.LogInformation("Player {0} planted a cannabis plant at x: {1}, y: {2}, z: {3}", player.Name, x, y, z);

      using var dbContext = new DatabaseContext();
      var user = player.GetUser(dbContext);

      InventoryManager.RemoveUserItem(user, userCannabisSeedsItem, 1);

      CannabisPlant newPlant = new CannabisPlant()
      {
        X = x,
        Y = y,
        Z = z,
        PlantedBy = user,
        PlantDate = DateTime.Now,
      };

      dbContext.CannabisPlants.Add(newPlant);
      dbContext.SaveChanges();

      UpdateHanfWorldData(dbContext);
    }

    public static void UpdateHanfWorldData(DatabaseContext dbContext)
    {
      var activePlants = dbContext.CannabisPlants.Where(p => !p.Harvested).Select(p => new CannabisData()
      {
        Id = p.Id,
        Time = p.PlantDate,
        X = p.X,
        Y = p.Y,
        Z = p.Z
      }).ToList();

      _currentCannabisData = activePlants;

      NAPI.Pools.GetAllPlayers().ForEach(p =>
      {
        UpdateHanfForPlayer(p, activePlants);
      });
    }

    public static void UpdateHanfForPlayer(Player player, List<CannabisData> cannabisData = null)
    {
      cannabisData ??= _currentCannabisData;

      string jsonStr = JsonConvert.SerializeObject(cannabisData);
      List<string> parts = GetChunks(jsonStr, 500);

      player.TriggerEvent("SERVER:Hanf_UpdateHanf", parts);
    }

    public static List<string> GetChunks(string value, int chunkSize)
    {
      List<string> triplets = new List<string>();
      while (value.Length > chunkSize)
      {
        triplets.Add(value.Substring(0, chunkSize));
        value = value.Substring(chunkSize);
      }

      if (value != "")
      {
        triplets.Add(value);
      }

      return triplets;
    }

    [RemoteEvent("CLIENT:Hanf_BuySeeds")]
    public void HanfManagerBuySeeds(Player player, int amount)
    {
      if (!player.IsLoggedIn())
      {
        return;
      }

      using var dbContext = new DatabaseContext();
      var user = player.GetUser(dbContext);

      if (amount > GetAmountOfCannabisSeedsPlayerCanBuyToday(user))
      {
        player.SendNotification("~r~Du kannst heute nicht mehr so viele Samen kaufen");
        return;
      }

      IItem seedItem = InventoryManager.GetItem<CannabisSeeds>();
      var newAmount = seedItem.Gewicht * amount;

      if (!InventoryManager.CanPlayerHoldMoreWeight(player, newAmount))
      {
        player.TriggerEvent("~r~So viele Samen passen nicht mehr in deine Hosentasche");
        return;
      }

      var price = amount * SEED_PRICE;

      if (user.Handmoney < price)
      {
        player.SendNotification("~r~Du hast nicht genug Geld dafür");
        return;
      }

      logger.LogInformation("Player {0} bought {1} cannabis seeds for {2} dollars (price per seed: {3})", player.Name, amount, price, SEED_PRICE); // <-- WICHTIG LOGS

      if (user.LastTimeBoughtCannabisSeeds == null || user.LastTimeBoughtCannabisSeeds.Value.Date != DateTime.Now.Date)
      {
        user.CannabisSeedsBoughtToday = amount;
      }
      else
      {
        user.CannabisSeedsBoughtToday += amount;
      }
      user.LastTimeBoughtCannabisSeeds = DateTime.Now;

      user.Handmoney -= price;
      dbContext.SaveChanges();

      InventoryManager.AddItemToInventory(player, seedItem.Id, amount);

      player.SendNotification($"Du hast {amount} Hanfsamen gekauft");
    }

    [RemoteEvent("CLIENT:Hanf_HarvestHanf")]
    public void HanfManagerHarvestHanf(Player player, long hanfId)
    {
      if (!player.IsLoggedIn())
      {
        return;
      }

      using var dbContext = new DatabaseContext();

      User user = player.GetUser(dbContext);
      CannabisPlant plant = dbContext.CannabisPlants.Include(p => p.PlantedBy).Where(p => p.Id == hanfId).FirstOrDefault();
      if (plant == null)
      {
        logger.LogError("Player {0} tried to harvest cannabis plant {1} but it was not found in database", player.Name, hanfId);
        return;
      }

      if (plant.Harvested)
      {
        return;
      }

      if (player.IsAdminDuty() && player.IsTSupport() && user.IsAdmin(AdminLevel.ADMIN))
      {
        player.SendNotification($"Du hast die Hanf-Pflanze von ~y~{plant.PlantedBy.Name}~s~ entfernt");
        plant.Harvested = true;
        dbContext.SaveChanges();
        UpdateHanfWorldData(dbContext);
        return;
      }

      if (user.Faction?.StateOwned == true)
      {
        if (!((user.FactionId == 1 || user.FactionId == 3) && player.IsDuty()))
        {
          player.SendNotification("~r~Du kannst kein Hanf ernten");
          return;
        }
      }

      //player.SyncAnimation(new[] { "harvestPlantEnter", "harvestPlant", "harvestPlantExit" }.ToList());
      //player.SyncAnimation("harvestPlant");
      //player.AddAttachment("shovel", false);

      if (user.FactionId != 3 && user.FactionId != 1) // Zivi / Gangmember erntet ab
      {
        player.SyncAnimation("harvestPlant");
        plant.Harvested = true;
        bool isPlantRotten = DateTime.Now - plant.PlantDate > MAX_PLANT_TIME;
        if (isPlantRotten)
        {
          player.SendNotification("~r~Die Pflanze ist leider verrottet");
        }
        else
        {
          bool isPlantReadyToHarvest = DateTime.Now - plant.PlantDate > MIN_PLANT_TIME_TO_HARVEST;
          if (!isPlantReadyToHarvest) // Wenn die Pflanze noch nicht ausgewachsen ist
          {
            bool getSeedBack = _random.Next(0, 2) == 1; // 50% Chance
            if (getSeedBack)
            {
              IItem cannabisSeedItem = InventoryManager.GetItem<CannabisSeeds>();
              InventoryManager.AddItemToInventory(player, cannabisSeedItem.Id, 1);
              player.SendNotification("~g~Du konntest den Samen wieder ausgraben");
            }
            else
            {
              player.SendNotification("~r~Du konntest den Samen leider nicht wieder ausgraben");
            }
          }
          else
          {
            bool isFemalePlant = _random.Next(0, 10) + 1 <= 8; // 80% Chance dass es eine weibliche Pflanze ist
            if (isFemalePlant)
            {
              int cannabisAmount = _random.Next(4, 10) + 1; // zwischen 5 und 10g Cannabis
              IItem cannabisItem = InventoryManager.GetItem<Cannabis>();
              var newWeight = cannabisAmount * cannabisItem.Gewicht;
              if (!InventoryManager.CanPlayerHoldMoreWeight(player, newWeight))
              {
                int restWeightPlayerCanHold = InventoryManager.MAX_USER_INVENTORY - InventoryManager.GetUserInventoryWeight(player);
                cannabisAmount = restWeightPlayerCanHold / cannabisItem.Gewicht;
                player.SendNotification("~o~Warnung:~s~ Du hast nicht das komplette Cannabis der Pflanze erhalten, da dein Inventar voll ist");
              }
              player.SendNotification("~g~" + cannabisAmount + "g Cannabis geerntet");
              InventoryManager.AddItemToInventory(player, cannabisItem.Id, cannabisAmount);
            }
            else
            {
              player.SendNotification("~r~Du hast die falschen Samen eingesät und keinen Ertrag aus dieser Pflanze erhalten");
            }
          }
        }
      }
      else // FIB / LSPD erntet ab
      {
        if (!(player.HasData("IsCarryingPlant") || player.GetData<bool>("IsCarryingPlant")))
        {
          player.SetData("IsCarryingPlant", true);

          player.SendNotification($"Du hast eine Pflanze von ~y~{plant.PlantedBy.Name}~s~ ausgegraben");

          player.SyncAnimation("harvestPlant");
          plant.Harvested = true;

          var modelToGet = GetModelFromPlant(plant);
          player.SetData("HoldingCannabisPlant", modelToGet);
          player.AddAttachment("CannabisPlantInHand" + modelToGet, false);
        }
      }

      dbContext.SaveChanges();
      UpdateHanfWorldData(dbContext);
    }

    private int GetModelFromPlant(CannabisPlant data)
    {
      var cannabisTime = (DateTime.Now - data.PlantDate).TotalMinutes;
      if (cannabisTime <= 30)
      {
        return 1;
      }
      else if (cannabisTime <= 60 * 4)
      {
        return 2;
      }
      else
      {
        return 3;
      }
    }

    internal static bool IsPlayerNearCannabisSellPoint(Player player)
    {
      return _cannabisSellPoints.Any(p => p.DistanceTo(player.Position) <= 3);
    }

    internal static void BuildJointsFromCannabis(Player player)
    {
      if (player.HasAnimation(_manufacturerAnim) || _manufacturerCurrentlyUsed)
      {
        return;
      }

      using var dbContext = new DatabaseContext();
      var user = player.GetUser(dbContext);
      var userItems = InventoryManager.GetUserItems(player, dbContext);

      IItem cannabisItem = InventoryManager.GetItem<Cannabis>();
      IItem jointItem = InventoryManager.GetItem<Joint>();

      UserItem userCannabisItem = userItems.Where(i => i.ItemId == cannabisItem.Id).FirstOrDefault();
      if (userCannabisItem == null || userCannabisItem.Amount < CANNABIS_NEEDED_FOR_JOINT)
      {
        player.SendNotification($"~r~Du hast nicht genug Cannabis dabei~n~Zur Herstellung eines Joints werden {CANNABIS_NEEDED_FOR_JOINT} Hanfblüten benötigt");
        return;
      }

      _manufacturerCurrentlyUsed = true;
      _manufacturerDoneTimer.Start();

      player.SyncAnimation(_manufacturerAnim);

      InventoryManager.RemoveUserItem(user, userCannabisItem, CANNABIS_NEEDED_FOR_JOINT);
      InventoryManager.AddItemToInventory(player, jointItem.Id, 1);

      player.SendNotification($"Du hast {CANNABIS_NEEDED_FOR_JOINT} Hanfblüten in einen Joint verarbeitet");

      NAPI.ClientEvent.TriggerClientEventInRange(player.Position, 100.0f, "SERVER:Hanf_PlayManufacturerAnim", _manufacturerAnim);
    }

    private static void ManufacturerDoneTimerCallback(object sender, EventArgs args)
    {
      _manufacturerDoneTimer.Stop();
      _manufacturerCurrentlyUsed = false;
    }

    [RemoteEvent("CLIENT:Hanf_FinishDiggingAnimation")]
    public void HanfManagerFinishDiggingAnimation(Player player)
    {
      player.AddAttachment("shovel", true);
    }

    private static int GetAmountOfCannabisSeedsPlayerCanBuyToday(User user)
    {
      if (user.LastTimeBoughtCannabisSeeds == null)
      {
        return MAX_SEEDS_PER_DAY;
      }

      if (user.LastTimeBoughtCannabisSeeds.Value.Date != DateTime.Now.Date)
      {
        return MAX_SEEDS_PER_DAY;
      }

      return MAX_SEEDS_PER_DAY - user.CannabisSeedsBoughtToday;
    }

    internal static void ShowPlayerBuySeedMenu(Player player)
    {
      var user = player.GetUser();

      if (user.Faction?.StateOwned == true)
      {
        return;
      }

      var seedsUserCanBuy = GetAmountOfCannabisSeedsPlayerCanBuyToday(user);

      if (seedsUserCanBuy == 0)
      {
        player.SendNotification("~r~Du kannst heute keine Samen mehr kaufen");
        return;
      }

      player.TriggerEvent("SERVER:Hanf_BuySeed", seedsUserCanBuy, SEED_PRICE);
    }

    internal static void PlayerSellCannabis(Player player)
    {
      if (!player.IsLoggedIn())
      {
        return;
      }
      using var dbContext = new DatabaseContext();
      var user = player.GetUser(dbContext);

      if (user.Faction?.StateOwned == true)
      {
        return;
      }

      List<UserItem> items = InventoryManager.GetUserItems(player, dbContext);

      IItem cannabisItem = InventoryManager.GetItem<Cannabis>();
      var cannabisAmount = items.Where(i => i.ItemId == cannabisItem.Id).FirstOrDefault()?.Amount ?? 0;

      if (cannabisAmount == 0)
      {
        player.SendNotification("~r~Du hast kein Cannabis dabei");
        return;
      }

      player.TriggerEvent("SERVER:Hanf_SellCannabisMenu", cannabisAmount, CANNABIS_PRICE);
    }

    [RemoteEvent("CLIENT:Hanf_SellCannabis")]
    public void HanfManagerSellCannabis(Player player, int amount)
    {
      if (!player.IsLoggedIn())
      {
        return;
      }

      using var dbContext = new DatabaseContext();
      var user = player.GetUser(dbContext);
      List<UserItem> items = InventoryManager.GetUserItems(player, dbContext);

      IItem cannabisItem = InventoryManager.GetItem<Cannabis>();
      var cannabisUserItem = items.Where(i => i.ItemId == cannabisItem.Id).FirstOrDefault();
      var cannabisAmount = cannabisUserItem?.Amount ?? 0;

      if (cannabisAmount < amount)
      {
        player.SendNotification("~r~Du hast nicht so viel Cannabis dabei");
        return;
      }

      var price = amount * CANNABIS_PRICE;
      user.Handmoney += price;
      InventoryManager.RemoveUserItem(user, cannabisUserItem, amount);

      logger.LogInformation("Player {0} sold {1} cannabis to the server for {2} dollars", player.Name, amount, price);

      player.SendNotification($"Du hast ~g~{amount} Hanfblüten~s~ für ~g~{price.ToMoneyString()}~s~ verkauft");
    }
  }
}