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package com.evolutiongaming.kafka.journal

import cats.syntax.all._
import cats.{Monad, ~>}
import com.evolutiongaming.kafka.journal.conversions.ActionToProducerRecord

trait ProduceAction[F[_]] {

  def apply(action: Action): F[PartitionOffset]
}

object ProduceAction {

  def apply[F[_] : Monad](
    producer: Journals.Producer[F])(implicit
    actionToProducerRecord: ActionToProducerRecord[F]
  ): ProduceAction[F] = {
    action: Action => {
      for {
        producerRecord  <- actionToProducerRecord(action)
        partitionOffset <- producer.send(producerRecord)
      } yield partitionOffset
    }
  }


  implicit class ProduceActionOps[F[_]](val self: ProduceAction[F]) extends AnyVal {

    def mapK[G[_]](f: F ~> G): ProduceAction[G] = (action: Action) => f(self(action))
  }
}