using System.Collections.Generic;
using System.Linq;
using GTANetworkAPI;
using ReallifeGamemode.Database.Entities;
using ReallifeGamemode.Database.Models;
using ReallifeGamemode.Server.Extensions;
using ReallifeGamemode.Server.Inventory.Interfaces;
using ReallifeGamemode.Server.Managers;

namespace ReallifeGamemode.Server.Inventory
{
  public class GroundItem : Script
  {
    public int ItemId { get; set; }
    public int Amount { get; set; }
    public Vector3 Position { get; set; }

    public static List<GroundItem> GroundItems = new List<GroundItem>();
    public static List<GTANetworkAPI.Object> GroundObjects = new List<GTANetworkAPI.Object>();
    public static List<TextLabel> GroundTextLabels = new List<TextLabel>();

    public static void AddGroundItem(GroundItem grndItem, GTANetworkAPI.Object grndObject, TextLabel grndTextLabel)
    {
      GroundItems.Add(grndItem);
      GroundObjects.Add(grndObject);
      GroundTextLabels.Add(grndTextLabel);
    }

    public static void PickUpGroundItem(Player player)
    {
      GroundItem nearest = GroundItems.FirstOrDefault(d => d.Position.DistanceTo(player.Position) <= 1.2);
      if (nearest != null)
      {
        var invWeight = InventoryManager.GetUserInventoryWeight(player);
        var itemsToAdd = 0;
        GTANetworkAPI.Object nearestObject = GroundObjects.FirstOrDefault(d => d.Position == nearest.Position);
        TextLabel nearestTextLabel = GroundTextLabels.FirstOrDefault(d => d.Position == new Vector3(nearest.Position.X, nearest.Position.Y, nearest.Position.Z + 1.05) || d.Position == new Vector3(nearest.Position.X, nearest.Position.Y, nearest.Position.Z + 0.8));
        IItem nearestItem = InventoryManager.GetItemById(nearest.ItemId);
        UserItem existingItem = InventoryManager.UserHasThisItem(player, nearest.ItemId);
        var user = player.GetUser();
        if (player.HasAttachment("ammobox"))
        { player.SendNotification("~r~Du kannst momentan nichts tragen!", false); return; }
        if (nearestItem.Gewicht * nearest.Amount + invWeight > 40000)
        {
          for (var i = 1; i <= nearest.Amount; i++)
          {
            if (invWeight + (i * nearestItem.Gewicht) > 40000)
            {
              break;
            }
            else
            {
              itemsToAdd = i;
            }
          }
          if (itemsToAdd < 1)
          {
            player.SendNotification("~r~Du hast keinen Platz im Inventar!", false);
          }
          else
          {
            if (existingItem != null)
            {
              using (var context = new DatabaseContext())
              {
                UserItem existingUserItem = context.UserItems.FirstOrDefault(i => i.Id == existingItem.Id);
                existingUserItem.Amount += itemsToAdd;
                context.SaveChanges();
              }
            }
            else
            {
              UserItem newItem = new UserItem { ItemId = nearest.ItemId, UserId = user.Id, Amount = nearest.Amount };
              InventoryManager.AddItemToInventory(player, newItem.ItemId, newItem.Amount);
            }
            nearest.Amount -= itemsToAdd;
            nearestTextLabel.Text = nearestItem.Name + " ~s~(~y~" + nearest.Amount + "~s~)";
            player.SendNotification("Du hast nur ~g~" + itemsToAdd + " ~y~" + nearestItem.Name + "~s~ aufgehoben.");
          }
        }
        else
        {
          if (existingItem != null)
          {
            using (var context = new DatabaseContext())
            {
              UserItem existingUserItem = context.UserItems.FirstOrDefault(i => i.Id == existingItem.Id && i.UserId == user.Id);
              existingUserItem.Amount += nearest.Amount;
              context.SaveChanges();
            }
          }
          else
          {
            UserItem item = new UserItem() { ItemId = nearest.ItemId, UserId = user.Id, Amount = nearest.Amount };
            InventoryManager.AddItemToInventory(player, item.ItemId, item.Amount);
          }
          RemoveGroundItem(nearest, nearestObject, nearestTextLabel);
          player.SendNotification("Du hast ~g~" + nearest.Amount + " ~y~" + nearestItem.Name + " ~s~aufgehoben.");
        }
        if (nearestItem is IWeaponDealItem obj)
        {
          if (!player.HasAttachment("ammobox"))
          {
            player.PlayAnimation("anim@heists@box_carry@", "idle", 49);
            player.AddAttachment("ammobox", false);
            NAPI.Player.SetPlayerCurrentWeapon(player, WeaponHash.Unarmed);
          }
        }
      }
    }

    public static void RemoveGroundItem(GroundItem grndItem, GTANetworkAPI.Object grndObject, TextLabel grndTextLabel)
    {
      GroundItems.Remove(grndItem);
      NAPI.Entity.DeleteEntity(grndObject);
      NAPI.Entity.DeleteEntity(grndTextLabel);
      GroundObjects.Remove(grndObject);
      GroundTextLabels.Remove(grndTextLabel);
    }
  }
}