import ru.tinkoff.phobos.decoding._
import ru.tinkoff.phobos.encoding._
import ru.tinkoff.phobos.syntax._
import ru.tinkoff.phobos.derivation.semiauto._

case class TravelPoint(country: String, city: String)
object TravelPoint {
  implicit val travelPointElementEncoder: ElementEncoder[TravelPoint] = deriveElementEncoder
  implicit val travelPointElementDecoder: ElementDecoder[TravelPoint] = deriveElementDecoder
}

case class Price(@attr currency: String, @text value: Double)
object Price {
  implicit val priceElementEncoder: ElementEncoder[Price] = deriveElementEncoder
  implicit val priceElementDecoder: ElementDecoder[Price] = deriveElementDecoder
}

case class Journey(price: Price, departure: TravelPoint, arrival: TravelPoint)
object Journey {
  implicit val journeyXmlEncoder: XmlEncoder[Journey] = deriveXmlEncoder("journey")
  implicit val journeyXmlDecoder: XmlDecoder[Journey] = deriveXmlDecoder("journey")
}


val journey =
  Journey(
    price = Price("EUR", 1000.0),
    departure = TravelPoint("France", "Marcelle"),
    arrival = TravelPoint("Germany", "Munich")
  )

val xml = XmlEncoder[Journey].encode(journey)
println(xml)

val decodedJourney = xml.flatMap(XmlDecoder[Journey].decode(_))
println(decodedJourney)

assert(Right(journey) == decodedJourney)