public bool AddItem(string roomName, InventoryItem item, out InventoryItem droppedItem, ITextProcessor textProcessor)
{
Guard.NullParameter(roomName, () => roomName);
Guard.NullParameter(item, () => item);
using (var session = _documentStore.OpenSession())
{
var inventory = session.Query<Inventory>().Customize(x => x.WaitForNonStaleResults()).SingleOrDefault(x => x.Room == roomName);
if (inventory == null)
{
inventory = new Inventory
{
Room = roomName,
Items = new List<InventoryItem>()
};
session.Store(inventory);
}
droppedItem = null;
if (inventory.Items.Any(x => textProcessor.SimplifiedEquals(x.Value, item.Value)))
{
session.SaveChanges();
return true;
}
if (inventory.Items.Count >= _inventoryCapacity)
{
var itemIndex = _randomNumberProvider.Next(_inventoryCapacity);
droppedItem = inventory.Items[itemIndex];
inventory.Items.RemoveAt(itemIndex);
}
inventory.Items.Add(item);
session.SaveChanges();
return false;
}
}
public IEnumerable<InventoryItem> GetInventory(string roomName)
{
Guard.NullParameter(roomName, () => roomName);
using (var session = _documentStore.OpenSession())
{
var inventory = session.Query<Inventory>().SingleOrDefault(x => x.Room == roomName);
if (inventory == null)
{
inventory = new Inventory
{
Room = roomName,
Items = new List<InventoryItem>()
};
session.Store(inventory);
session.SaveChanges();
}
return inventory.Items;
}
}
public InventoryItem RemoveRandomItem(string roomName)
{
Guard.NullParameter(roomName, () => roomName);
using (var session = _documentStore.OpenSession())
{
var inventory = session.Query<Inventory>().SingleOrDefault(x => x.Room == roomName);
if (inventory == null)
{
inventory = new Inventory
{
Room = roomName,
Items = new List<InventoryItem>()
};
session.Store(inventory);
session.SaveChanges();
return null;
}
if (inventory.Items.Count == 0)
{
return null;
}
var itemIndex = _randomNumberProvider.Next(inventory.Items.Count);
var item = inventory.Items[itemIndex];
inventory.Items.RemoveAt(itemIndex);
session.SaveChanges();
return item;
}
}
