package com.twitter.frigate.pushservice.model

import com.twitter.finagle.stats.StatsReceiver
import com.twitter.frigate.common.base.TopTweetImpressionsCandidate
import com.twitter.frigate.pushservice.model.PushTypes.PushCandidate
import com.twitter.frigate.pushservice.model.PushTypes.RawCandidate
import com.twitter.frigate.pushservice.config.Config
import com.twitter.frigate.pushservice.ml.PushMLModelScorer
import com.twitter.frigate.pushservice.model.candidate.CopyIds
import com.twitter.frigate.pushservice.model.ibis.TopTweetImpressionsCandidateIbis2Hydrator
import com.twitter.frigate.pushservice.model.ntab.TopTweetImpressionsNTabRequestHydrator
import com.twitter.frigate.pushservice.predicate.TopTweetImpressionsPredicates
import com.twitter.frigate.pushservice.take.predicates.BasicTweetPredicatesForRFPH
import com.twitter.frigate.thriftscala.CommonRecommendationType
import com.twitter.hermit.predicate.NamedPredicate
import com.twitter.notificationservice.thriftscala.StoryContext
import com.twitter.notificationservice.thriftscala.StoryContextValue
import com.twitter.stitch.tweetypie.TweetyPie

/**
 * This class defines a hydrated [[TopTweetImpressionsCandidate]]
 *
 * @param candidate: [[TopTweetImpressionsCandidate]] for the candidate representing the user's Tweet with the most impressions
 * @param copyIds: push and ntab notification copy
 * @param stats: finagle scoped states receiver
 * @param pushModelScorer: ML model score object for fetching prediction scores
 */
class TopTweetImpressionsPushCandidate(
  candidate: RawCandidate with TopTweetImpressionsCandidate,
  copyIds: CopyIds
)(
  implicit stats: StatsReceiver,
  pushModelScorer: PushMLModelScorer)
    extends PushCandidate
    with TopTweetImpressionsCandidate
    with TopTweetImpressionsNTabRequestHydrator
    with TopTweetImpressionsCandidateIbis2Hydrator {
  override val target: PushTypes.Target = candidate.target
  override val commonRecType: CommonRecommendationType = candidate.commonRecType
  override val tweetId: Long = candidate.tweetId
  override lazy val tweetyPieResult: Option[TweetyPie.TweetyPieResult] =
    candidate.tweetyPieResult
  override val impressionsCount: Long = candidate.impressionsCount

  override val statsReceiver: StatsReceiver = stats.scope(getClass.getSimpleName)
  override val pushCopyId: Option[Int] = copyIds.pushCopyId
  override val ntabCopyId: Option[Int] = copyIds.ntabCopyId
  override val copyAggregationId: Option[String] = copyIds.aggregationId
  override val weightedOpenOrNtabClickModelScorer: PushMLModelScorer = pushModelScorer
  override val storyContext: Option[StoryContext] =
    Some(StoryContext(altText = "", value = Some(StoryContextValue.Tweets(Seq(tweetId)))))
}

case class TopTweetImpressionsPushCandidatePredicates(config: Config)
    extends BasicTweetPredicatesForRFPH[TopTweetImpressionsPushCandidate] {

  implicit val statsReceiver: StatsReceiver = config.statsReceiver.scope(getClass.getSimpleName)

  override val preCandidateSpecificPredicates: List[
    NamedPredicate[TopTweetImpressionsPushCandidate]
  ] = List(
    TopTweetImpressionsPredicates.topTweetImpressionsFatiguePredicate
  )

  override val postCandidateSpecificPredicates: List[
    NamedPredicate[TopTweetImpressionsPushCandidate]
  ] = List(
    TopTweetImpressionsPredicates.topTweetImpressionsThreshold()
  )
}