namespace LiteCharms.Features.ShoppingCarts.Commands;

public class UpdateShoppingCartItemCommand : IRequest<Result>
{
    public Guid ShoppingCartId { get; set; }

    public Guid ShoppingCartItemId { get; set; }

    public int Quantity { get; set; }

    private UpdateShoppingCartItemCommand(Guid shoppingCartId, Guid shoppingCartItemId, int quantity = 1)
    {
        ShoppingCartId = shoppingCartId;
        ShoppingCartItemId = shoppingCartItemId;
        Quantity = quantity;
    }

    public static UpdateShoppingCartItemCommand Create(Guid shoppingCartId, Guid shoppingCartItemId, int quantity = 1)
    {
        if (shoppingCartId == Guid.Empty)
            throw new ArgumentException($"Shopping cart ID is required", nameof(shoppingCartId));

        if (shoppingCartItemId == Guid.Empty)
            throw new ArgumentException($"Shopping cart item is required", nameof(shoppingCartItemId));

        if (quantity <= 0) throw new ArgumentException($"Quantity must be at least 1", nameof(quantity));

        return new(shoppingCartId, shoppingCartItemId, quantity);
    }
}