namespace Sasalka;

public class Inventar
{
	[Flags]
	public enum InventorySlot
	{
		None = 0,
		LeftHand = 1 << 0, // 1
		RightHand = 1 << 1, // 2
		Head = 1 << 2, // 4
		Body = 1 << 3, // 8
		Hands = 1 << 4, // 16
		Bottom = 1 << 5, // 32
		Feet = 1 << 6 // 64
	}

	public List<InventoryItem> Items { get; private set; } = new();
	public static bool IsInventoryOpen = false;
	public Dictionary<InventorySlot, InventoryItem> EquippedItems { get; private set; } = new();

	public event Action OnChanged;
	public event Action<InventoryItem> OnEquipped;
	public event Action<InventoryItem> OnUnEquipped;

	public void AddItem( InventoryItem item )
	{
		Items.Add( item );
		OnChanged?.Invoke();
	}

	public void RemoveItem( InventoryItem item )
	{
		UnEquipItem( item );
		Items.Remove( item );
		OnChanged?.Invoke();
	}

	// public void EquipItem( InventoryItem item )
	// {
	// 	if ( EquippedItems.ContainsValue( item ) )
	// 	{
	// 		UnEquipItem( item );
	// 	}
	// 	else
	// 	{
	// 		EquippedItems.Add( item.Definition.Slot, item );
	// 		OnEquipped?.Invoke( item );
	// 	}
	// }

	public void EquipItem( InventoryItem item )
	{
		if ( item.Definition is not IEquipable equipable ) return;

		if ( EquippedItems.ContainsValue( item ) )
		{
			UnEquipItem( item );
		}
		else
		{
			EquippedItems[equipable.Slot] = item;
			OnEquipped?.Invoke( item );
		}
	}

	public void UnEquipItem( InventoryItem item )
	{
		foreach ( var kvp in EquippedItems.Where( kvp => kvp.Value == item ).ToList() )
		{
			EquippedItems.Remove( kvp.Key );
		}

		OnUnEquipped?.Invoke( item );
	}
}