package controllers

import scala.language.higherKinds

import eu.timepit.refined.api.{RefType, Validate}
import play.api.mvc.PathBindable


object RefinedPathBindable {

  implicit def refinedPathBindable[R[_, _], T, P](implicit
                                                  baseTypeBinder: PathBindable[T],
                                                  refType: RefType[R],
                                                  validate: Validate[T, P]
                                                 ): PathBindable[R[T, P]] = new PathBindable[R[T, P]] {

    override def bind(key: String, value: String): Either[String, R[T, P]] = {
      baseTypeBinder.bind(key, value).right.flatMap { baseValue =>
        refType.refine[P](baseValue)
      }
    }

    override def unbind(key: String, value: R[T, P]): String = {
      baseTypeBinder.unbind(key, refType.unwrap(value))
    }
  }
}