server/protocols/jmap-rfc-8621/src/main/scala/org/apache/james/jmap/model/Query.scala

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package org.apache.james.jmap.model

import com.google.common.hash.Hashing
import eu.timepit.refined.auto._
import eu.timepit.refined.api.Refined
import eu.timepit.refined.numeric.Positive
import eu.timepit.refined.refineV
import org.apache.james.mailbox.model.{MailboxId, MessageId}
import reactor.core.scala.publisher.SMono

case class Position(value: Int) extends AnyVal
object Position{
  val zero: Position = Position(0)
}

case class LimitUnparsed(value: Long) extends AnyVal

object Limit {
  type Limit = Long Refined Positive
  val default: Limit = 256L

  def validateRequestLimit(requestLimit: Option[LimitUnparsed]): SMono[Limit] = {
    val refinedLimit : Option[Either[String, Limit]] =  requestLimit.map(limit => refineV[Positive](limit.value))

    refinedLimit match {
      case Some(Left(_))  =>  SMono.raiseError(new IllegalArgumentException(s"The limit can not be negative. ${requestLimit.map(_.value).getOrElse("")} was provided."))
      case Some(Right(limit)) if limit.value < default.value => SMono.just(limit)
      case _ => SMono.just(default)
    }
  }
}

case class QueryState(value: String) extends AnyVal
object QueryState {
  def forIds(ids: Seq[MessageId]): QueryState =
    forStrings(ids.map(_.serialize()))

  def forMailboxIds(ids: Seq[MailboxId]): QueryState =
    forStrings(ids.map(_.serialize()))

  def forStrings(strings: Seq[String]): QueryState = QueryState(
    Hashing.murmur3_32()
      .hashUnencodedChars(strings.mkString(" "))
      .toString)
}

case class CanCalculateChanges(value: Boolean) extends AnyVal

object CanCalculateChanges {
  val CANNOT: CanCalculateChanges = CanCalculateChanges(false)
}