public async Task <IActionResult> PostHeros([FromBody] PassedGameData <bool[]> passedData)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }
            DateTime now = DateTime.UtcNow;

            if (passedData.UserToken == null || passedData.ActionToken == null)
            {
                return(BadRequest(new DataError("securityErr", "No authorization controll.")));
            }
            UserToken dbtoken = Security.CheckUserToken(this._context, passedData.UserToken);

            if (dbtoken == null)
            {
                return(BadRequest(new DataError("securityErr", "Your data has probably been stolen or modified manually. We suggest password's change.")));
            }
            else
            {
                if (!dbtoken.IsTimeValid(now))
                {
                    return(BadRequest(new DataError("timeoutErr", "You have been too long inactive. Relogin is required.")));
                }
                else
                {
                    dbtoken.UpdateToken(now);
                }
            }
            Heros       hero      = _context.Heros.FirstOrDefault(e => e.Name == passedData.ActionToken.HeroName);
            ActionToken gametoken = Security.CheckActionToken(_context, passedData.ActionToken, hero.HeroId);

            if (gametoken == null)
            {
                return(BadRequest(new DataError("securityErr", "Your data has probably been stolen or modified manually. We suggest password's change.")));
            }
            else
            {
                if (!gametoken.IsTimeValid(now))
                {
                    return(BadRequest(new DataError("timeoutErr", "You have been too long inactive. Relogin is required.")));
                }
                else
                {
                    gametoken.UpdateToken(now);
                }
            }
            // now do your stuff...
            if (hero.Invitational)
            {
                try
                {
                    if (passedData.Data[0])
                    {
                        hero.VelocityFactor = 10;
                    }
                    if (passedData.Data[1])
                    {
                        hero.Lvl        = 5;
                        hero.Experience = HeroCalculator.ExpToLevel(5);
                    }
                    if (passedData.Data[2])
                    {
                        var list = new List <Backpack>();
                        for (int i = 1; i <= 16; i++)
                        {
                            list.Add(new Backpack()
                            {
                                HeroId = hero.HeroId,
                                ItemId = i,
                                SlotNr = i - 1,
                            });
                        }
                        _context.Backpack.AddRange(list);
                    }
                    hero.Invitational = false;
                    await _context.SaveChangesAsync();

                    return(Ok(new { success = true }));
                }
                catch (DbUpdateException)
                {
                    return(BadRequest(new DataError("databaseErr", "Failed to update hero.")));
                }
            }
            else
            {
                return(BadRequest(new DataError("securityErr", "This option should be impossible to reach.")));
            }
        }
        public async Task <IActionResult> PostEquipment([FromBody] PassedGameData <PassedChangeEqData> passedData)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }
            DateTime now = DateTime.UtcNow;

            if (passedData.UserToken == null || passedData.ActionToken == null)
            {
                return(BadRequest(new DataError("securityErr", "No authorization controll.")));
            }
            UserToken dbtoken = Security.CheckUserToken(this._context, passedData.UserToken);

            if (dbtoken == null)
            {
                return(BadRequest(new DataError("securityErr", "Your data has probably been stolen or modified manually. We suggest password's change.")));
            }
            else
            {
                if (!dbtoken.IsTimeValid(now))
                {
                    return(BadRequest(new DataError("timeoutErr", "You have been too long inactive. Relogin is required.")));
                }
                else
                {
                    dbtoken.UpdateToken(now);
                }
            }
            Heros       hero      = _context.Heros.FirstOrDefault(e => e.Name == passedData.ActionToken.HeroName);
            ActionToken gametoken = Security.CheckActionToken(_context, passedData.ActionToken, hero.HeroId);

            if (gametoken == null)
            {
                return(BadRequest(new DataError("securityErr", "Your data has probably been stolen or modified manually. We suggest password's change.")));
            }
            else
            {
                if (!gametoken.IsTimeValid(now))
                {
                    return(BadRequest(new DataError("timeoutErr", "You have been too long inactive. Relogin is required.")));
                }
                else
                {
                    gametoken.UpdateToken(now);
                }
            }
            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateException)
            {
                return(BadRequest(new DataError("databaseErr", "Failed to update tokens.")));
            }
            // can do stuff

            var Equipment = _context.Equipment.FirstOrDefault(e => e.HeroId == hero.HeroId);

            if (Equipment == null)
            {
                return(BadRequest(new DataError("equipmentErr", "Hero is without equipment.")));
            }
            var Backpack = _context.Backpack.Where(e => e.HeroId == hero.HeroId);

            var Added   = new List <EquipmentModifyResult.EquipmentModification>();
            var Removed = new List <EquipmentModifyResult.EquipmentModification>();

            if (passedData.Data.From == passedData.Data.To)
            {
                return(Ok(new { success = true, changes = new EquipmentModifyResult()
                                {
                                    Added = Added.ToArray(), Removed = Removed.ToArray()
                                } }));
            }
            // BP -> BP
            if (passedData.Data.From.StartsWith("Backpack") && passedData.Data.To.StartsWith("Backpack"))
            {
                int fromSlot = int.Parse(passedData.Data.From.Substring(8));
                int toSlot   = int.Parse(passedData.Data.To.Substring(8));
                var fromItem = _context.Backpack.FirstOrDefault(e => e.HeroId == hero.HeroId && e.SlotNr == fromSlot);
                if (fromItem == null)
                {
                    return(BadRequest(new DataError("changeEqErr", "No initial item.")));
                }
                // remove from current and add to new
                Removed.Add(new EquipmentModifyResult.EquipmentModification()
                {
                    ItemID = null, Target = passedData.Data.From
                });
                Added.Add(new EquipmentModifyResult.EquipmentModification()
                {
                    ItemID = fromItem.ItemId, Target = passedData.Data.To
                });

                var toItem = _context.Backpack.FirstOrDefault(e => e.HeroId == hero.HeroId && e.SlotNr == toSlot);
                if (toItem == null)
                {
                    _context.Backpack.Remove(fromItem);
                    _context.Backpack.Add(new Backpack()
                    {
                        HeroId = hero.HeroId,
                        ItemId = fromItem.ItemId,
                        SlotNr = toSlot,
                    });
                }
                else
                {
                    Removed.Add(new EquipmentModifyResult.EquipmentModification()
                    {
                        ItemID = null, Target = passedData.Data.To
                    });
                    Added.Add(new EquipmentModifyResult.EquipmentModification()
                    {
                        ItemID = toItem.ItemId, Target = passedData.Data.From
                    });
                    int mem = toItem.ItemId;
                    toItem.ItemId   = fromItem.ItemId;
                    fromItem.ItemId = mem;
                }
            }
            // BP -> EQ
            if (passedData.Data.From.StartsWith("Backpack") && passedData.Data.To.StartsWith("Inventory"))
            {
                int fromSlot = int.Parse(passedData.Data.From.Substring(8));
                int toSlot   = int.Parse(passedData.Data.To.Substring(9));
                var fromItem = _context.Backpack.FirstOrDefault(e => e.HeroId == hero.HeroId && e.SlotNr == fromSlot);
                if (fromItem == null)
                {
                    return(BadRequest(new DataError("changeEqErr", "No initial item.")));
                }
                var passeditem = _context.Items.FirstOrDefault(e => e.ItemId == fromItem.ItemId);
                if (passeditem == null)
                {
                    return(BadRequest(new DataError("changeEqErr", "No initial item.")));
                }
                if (!EquipmentControll.CanEquip(passeditem, hero, toSlot))
                {
                    return(BadRequest(new DataError("changeEqErr", "Items requirements are not fullfilled.")));
                }
                Removed.Add(new EquipmentModifyResult.EquipmentModification()
                {
                    ItemID = null, Target = passedData.Data.From
                });
                Added.Add(new EquipmentModifyResult.EquipmentModification()
                {
                    ItemID = fromItem.ItemId, Target = passedData.Data.To
                });

                int?Target = null;
                switch (toSlot)
                {
                case 0:
                    Target = Equipment.Helmet;
                    break;

                case 1:
                    Target = Equipment.Ring1;
                    break;

                case 2:
                    Target = Equipment.Neckles;
                    break;

                case 3:
                    Target = Equipment.Ring2;
                    break;

                case 4:
                    Target = Equipment.Gloves;
                    break;

                case 5:
                    Target = Equipment.Armour;
                    break;

                case 6:
                    Target = Equipment.Bracelet;
                    break;

                case 7:
                    Target = Equipment.FirstHand;
                    break;

                case 8:
                    Target = Equipment.Trousers;
                    break;

                case 9:
                    Target = Equipment.SecondHand;
                    break;

                case 10:
                    Target = Equipment.Shoes;
                    break;
                }

                var toItem = Target;

                // update inventory
                switch (toSlot)
                {
                case 0:
                    Equipment.Helmet = fromItem.ItemId;
                    break;

                case 1:
                    Equipment.Ring1 = fromItem.ItemId;
                    break;

                case 2:
                    Equipment.Neckles = fromItem.ItemId;
                    break;

                case 3:
                    Equipment.Ring2 = fromItem.ItemId;
                    break;

                case 4:
                    Equipment.Gloves = fromItem.ItemId;
                    break;

                case 5:
                    Equipment.Armour = fromItem.ItemId;
                    break;

                case 6:
                    Equipment.Bracelet = fromItem.ItemId;
                    break;

                case 7:
                    Equipment.FirstHand = fromItem.ItemId;
                    break;

                case 8:
                    Equipment.Trousers = fromItem.ItemId;
                    break;

                case 9:
                    Equipment.SecondHand = fromItem.ItemId;
                    break;

                case 10:
                    Equipment.Shoes = fromItem.ItemId;
                    break;
                }

                // update backpack
                if (toItem == null)
                {
                    _context.Backpack.Remove(fromItem);
                }
                else
                {
                    Removed.Add(new EquipmentModifyResult.EquipmentModification()
                    {
                        ItemID = null, Target = passedData.Data.To
                    });
                    Added.Add(new EquipmentModifyResult.EquipmentModification()
                    {
                        ItemID = toItem, Target = passedData.Data.From
                    });
                    fromItem.ItemId = toItem.Value;
                }
            }
            // EQ -> BP
            if (passedData.Data.From.StartsWith("Inventory") && passedData.Data.To.StartsWith("Backpack"))
            {
                int fromSlot = int.Parse(passedData.Data.From.Substring(9));
                int toSlot   = int.Parse(passedData.Data.To.Substring(8));
                int?Target   = null;
                switch (fromSlot)
                {
                case 0:
                    Target = Equipment.Helmet;
                    break;

                case 1:
                    Target = Equipment.Ring1;
                    break;

                case 2:
                    Target = Equipment.Neckles;
                    break;

                case 3:
                    Target = Equipment.Ring2;
                    break;

                case 4:
                    Target = Equipment.Gloves;
                    break;

                case 5:
                    Target = Equipment.Armour;
                    break;

                case 6:
                    Target = Equipment.Bracelet;
                    break;

                case 7:
                    Target = Equipment.FirstHand;
                    break;

                case 8:
                    Target = Equipment.Trousers;
                    break;

                case 9:
                    Target = Equipment.SecondHand;
                    break;

                case 10:
                    Target = Equipment.Shoes;
                    break;
                }
                var fromItem = Target;
                if (fromItem == null)
                {
                    return(BadRequest(new DataError("changeEqErr", "No initial item.")));
                }

                var toItem = _context.Backpack.FirstOrDefault(e => e.HeroId == hero.HeroId && e.SlotNr == toSlot);
                if (toItem != null)
                {
                    // slot is being used
                    var passeditem = _context.Items.FirstOrDefault(e => e.ItemId == toItem.ItemId);
                    if (passeditem == null)
                    {
                        return(BadRequest(new DataError("changeEqErr", "No target item in DB.")));
                    }
                    if (!EquipmentControll.CanEquip(passeditem, hero, fromSlot))
                    {
                        return(BadRequest(new DataError("changeEqErr", "Items requirements are not fullfilled.")));
                    }
                }

                Removed.Add(new EquipmentModifyResult.EquipmentModification()
                {
                    ItemID = null, Target = passedData.Data.From
                });
                Added.Add(new EquipmentModifyResult.EquipmentModification()
                {
                    ItemID = fromItem.Value, Target = passedData.Data.To
                });

                // null if prev was empty lub itemID if existed
                int?invRes = toItem?.ItemId;
                // update inventory
                switch (fromSlot)
                {
                case 0:
                    Equipment.Helmet = invRes;
                    break;

                case 1:
                    Equipment.Ring1 = invRes;
                    break;

                case 2:
                    Equipment.Neckles = invRes;
                    break;

                case 3:
                    Equipment.Ring2 = invRes;
                    break;

                case 4:
                    Equipment.Gloves = invRes;
                    break;

                case 5:
                    Equipment.Armour = invRes;
                    break;

                case 6:
                    Equipment.Bracelet = invRes;
                    break;

                case 7:
                    Equipment.FirstHand = invRes;
                    break;

                case 8:
                    Equipment.Trousers = invRes;
                    break;

                case 9:
                    Equipment.SecondHand = invRes;
                    break;

                case 10:
                    Equipment.Shoes = invRes;
                    break;
                }

                // update backpack
                if (toItem == null)
                {
                    _context.Backpack.Add(new Backpack()
                    {
                        HeroId = hero.HeroId,
                        ItemId = fromItem.Value,
                        SlotNr = toSlot,
                    });
                }
                else
                {
                    Removed.Add(new EquipmentModifyResult.EquipmentModification()
                    {
                        ItemID = null, Target = passedData.Data.To
                    });
                    Added.Add(new EquipmentModifyResult.EquipmentModification()
                    {
                        ItemID = toItem.ItemId, Target = passedData.Data.From
                    });
                    toItem.ItemId = fromItem.Value;
                }
            }
            // EQ -> EQ
            if (passedData.Data.From.StartsWith("Inventory") && passedData.Data.To.StartsWith("Inventory"))
            {
                int fromSlot = int.Parse(passedData.Data.From.Substring(9));
                int toSlot   = int.Parse(passedData.Data.To.Substring(9));
                int?Target   = null;
                switch (fromSlot)
                {
                case 0:
                    Target = Equipment.Helmet;
                    break;

                case 1:
                    Target = Equipment.Ring1;
                    break;

                case 2:
                    Target = Equipment.Neckles;
                    break;

                case 3:
                    Target = Equipment.Ring2;
                    break;

                case 4:
                    Target = Equipment.Gloves;
                    break;

                case 5:
                    Target = Equipment.Armour;
                    break;

                case 6:
                    Target = Equipment.Bracelet;
                    break;

                case 7:
                    Target = Equipment.FirstHand;
                    break;

                case 8:
                    Target = Equipment.Trousers;
                    break;

                case 9:
                    Target = Equipment.SecondHand;
                    break;

                case 10:
                    Target = Equipment.Shoes;
                    break;
                }
                var fromItem = Target;
                if (fromItem == null)
                {
                    return(BadRequest(new DataError("changeEqErr", "No initial item.")));
                }
                Target = null;
                switch (toSlot)
                {
                case 0:
                    Target = Equipment.Helmet;
                    break;

                case 1:
                    Target = Equipment.Ring1;
                    break;

                case 2:
                    Target = Equipment.Neckles;
                    break;

                case 3:
                    Target = Equipment.Ring2;
                    break;

                case 4:
                    Target = Equipment.Gloves;
                    break;

                case 5:
                    Target = Equipment.Armour;
                    break;

                case 6:
                    Target = Equipment.Bracelet;
                    break;

                case 7:
                    Target = Equipment.FirstHand;
                    break;

                case 8:
                    Target = Equipment.Trousers;
                    break;

                case 9:
                    Target = Equipment.SecondHand;
                    break;

                case 10:
                    Target = Equipment.Shoes;
                    break;
                }
                var toItem = Target;

                var passeditem = _context.Items.FirstOrDefault(e => e.ItemId == fromItem.Value);
                if (passeditem == null)
                {
                    return(BadRequest(new DataError("changeEqErr", "No target item in DB.")));
                }
                if (!EquipmentControll.CanEquip(passeditem, hero, toSlot))
                {
                    return(BadRequest(new DataError("changeEqErr", "Items requirements are not fullfilled.")));
                }
                if (toItem != null)
                {
                    var passeditem2 = _context.Items.FirstOrDefault(e => e.ItemId == toItem.Value);
                    if (passeditem2 == null)
                    {
                        return(BadRequest(new DataError("changeEqErr", "No target item in DB.")));
                    }
                    if (!EquipmentControll.CanEquip(passeditem2, hero, fromSlot))
                    {
                        return(BadRequest(new DataError("changeEqErr", "Items requirements are not fullfilled.")));
                    }
                }

                Removed.Add(new EquipmentModifyResult.EquipmentModification()
                {
                    ItemID = null, Target = passedData.Data.From
                });
                Added.Add(new EquipmentModifyResult.EquipmentModification()
                {
                    ItemID = fromItem.Value, Target = passedData.Data.To
                });

                // update inventory
                switch (fromSlot)
                {
                case 0:
                    Equipment.Helmet = toItem;
                    break;

                case 1:
                    Equipment.Ring1 = toItem;
                    break;

                case 2:
                    Equipment.Neckles = toItem;
                    break;

                case 3:
                    Equipment.Ring2 = toItem;
                    break;

                case 4:
                    Equipment.Gloves = toItem;
                    break;

                case 5:
                    Equipment.Armour = toItem;
                    break;

                case 6:
                    Equipment.Bracelet = toItem;
                    break;

                case 7:
                    Equipment.FirstHand = toItem;
                    break;

                case 8:
                    Equipment.Trousers = toItem;
                    break;

                case 9:
                    Equipment.SecondHand = toItem;
                    break;

                case 10:
                    Equipment.Shoes = toItem;
                    break;
                }
                switch (toSlot)
                {
                case 0:
                    Equipment.Helmet = fromItem;
                    break;

                case 1:
                    Equipment.Ring1 = fromItem;
                    break;

                case 2:
                    Equipment.Neckles = fromItem;
                    break;

                case 3:
                    Equipment.Ring2 = fromItem;
                    break;

                case 4:
                    Equipment.Gloves = fromItem;
                    break;

                case 5:
                    Equipment.Armour = fromItem;
                    break;

                case 6:
                    Equipment.Bracelet = fromItem;
                    break;

                case 7:
                    Equipment.FirstHand = fromItem;
                    break;

                case 8:
                    Equipment.Trousers = fromItem;
                    break;

                case 9:
                    Equipment.SecondHand = fromItem;
                    break;

                case 10:
                    Equipment.Shoes = fromItem;
                    break;
                }
                if (toItem != null)
                {
                    Removed.Add(new EquipmentModifyResult.EquipmentModification()
                    {
                        ItemID = null, Target = passedData.Data.To
                    });
                    Added.Add(new EquipmentModifyResult.EquipmentModification()
                    {
                        ItemID = toItem.Value, Target = passedData.Data.From
                    });
                }
            }
            // Remove item
            if (passedData.Data.To == "Trash")
            {
                if (passedData.Data.From.StartsWith("Backpack"))
                {
                    int fromSlot = int.Parse(passedData.Data.From.Substring(8));
                    var fromItem = _context.Backpack.FirstOrDefault(e => e.HeroId == hero.HeroId && e.SlotNr == fromSlot);
                    if (fromItem == null)
                    {
                        return(BadRequest(new DataError("changeEqErr", "No initial item.")));
                    }
                    // remove from current and add to new
                    _context.Backpack.Remove(fromItem);
                    Removed.Add(new EquipmentModifyResult.EquipmentModification()
                    {
                        ItemID = null, Target = passedData.Data.From
                    });
                }
                if (passedData.Data.From.StartsWith("Inventory"))
                {
                    int fromSlot = int.Parse(passedData.Data.From.Substring(9));
                    switch (fromSlot)
                    {
                    case 0:
                        Equipment.Helmet = null;
                        break;

                    case 1:
                        Equipment.Ring1 = null;
                        break;

                    case 2:
                        Equipment.Neckles = null;
                        break;

                    case 3:
                        Equipment.Ring2 = null;
                        break;

                    case 4:
                        Equipment.Gloves = null;
                        break;

                    case 5:
                        Equipment.Armour = null;
                        break;

                    case 6:
                        Equipment.Bracelet = null;
                        break;

                    case 7:
                        Equipment.FirstHand = null;
                        break;

                    case 8:
                        Equipment.Trousers = null;
                        break;

                    case 9:
                        Equipment.SecondHand = null;
                        break;

                    case 10:
                        Equipment.Shoes = null;
                        break;
                    }
                    Removed.Add(new EquipmentModifyResult.EquipmentModification()
                    {
                        ItemID = null, Target = passedData.Data.From
                    });
                }
            }

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateException)
            {
                return(BadRequest(new DataError("databaseErr", "Failed to update equipment.")));
            }
            return(Ok(new { success = true, changes = new EquipmentModifyResult()
                            {
                                Added = Added.ToArray(), Removed = Removed.ToArray()
                            } }));
        }