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package olon
package json

/** Serializer which serializes all fields of a class too.
  *
  * Serialization can be intercepted by giving two optional PartialFunctions as
  * constructor parameters:  
 FieldSerializer[WildDog]( renameTo("name",
  * "animalname") orElse ignore("owner"), renameFrom("animalname", "name") )
  * 
  */
case class FieldSerializer[A](
    serializer: PartialFunction[(String, Any), Option[(String, Any)]] = Map(),
    deserializer: PartialFunction[JField, JField] = Map()
)

object FieldSerializer {
  def renameFrom(
      name: String,
      newName: String
  ): PartialFunction[JField, JField] = { case JField(`name`, x) =>
    JField(newName, x)
  }

  def ignore(
      name: String
  ): PartialFunction[(String, Any), Option[(String, Any)]] = {
    case (`name`, _) => None
  }

  def renameTo(
      name: String,
      newName: String
  ): PartialFunction[(String, Any), Option[(String, Any)]] = {
    case (`name`, x) => Some(newName, x)
  }
}