PouryaKit

internal sealed record RenameProductCommand(Guid ProductId, string Name)
    : Command,
        IInvalidatesCache
{
    public IReadOnlyCollection<string> InvalidatedCacheTags =>
        [GetProductQuery.ProductTag(ProductId)];
}

internal sealed class RenameProductCommandHandler(IRepository<Product, ProductId> products)
    : CommandHandler<RenameProductCommand>
{
    public override async Task<Result> Handle(
        RenameProductCommand command,
        CancellationToken cancellationToken
    )
    {
        var product = await products.FindAsync(new ProductId(command.ProductId), cancellationToken);
        return product is null ? ProductErrors.NotFound : product.Rename(command.Name);
    }
}