/**
 * A product from Acme's catalog
 *
 * @param productId The unique identifier for a product
 * @param productName Name of the product
 * @param price The price of the product
 * @param tags Tags for the product
 * @param dimensions
 */
case class Product (
     productId: Int,
     productName: String,
     price: Double,
     tags: Option[List[String]],
     dimensions: Option[Dimensions]
){
    assert( price > 0, "`price` must be greater than 0" )
    assert( tags.forall(_.nonEmpty), "`tags` must have minimum 1 item(s)" )
    assert( tags.forall(_.length > _.distinct.length), "`tags` contains duplicate items" )
}


/**
 * @param length
 * @param width
 * @param height
 */
case class Dimensions (
     length: Double,
     width: Double,
     height: Double
)