package fr.natan.akkastreamfileprocessingapi.service

import akka.actor.ActorSystem
import akka.stream.scaladsl.{Flow, Sink, Source}
import akka.{Done, NotUsed}
import com.typesafe.scalalogging.slf4j.Logger
import fr.natan.akkastreamfileprocessingapi.datasource.Datasource.{nameBasics, titleBasics}
import fr.natan.akkastreamfileprocessingapi.models.Models.{Person, TvSeries}
import fr.natan.akkastreamfileprocessingapi.service.AkkaStreamComponents.{buildAndValidateSource, buildPersonFlow, buildPersonSink, buildSource, buildTvSerieFlow, buildTvSeriesSink, filterByMoviePrimaryTitleFlow, filterByPersonIdFlow, filterByPersonNameFlow}
import org.slf4j.LoggerFactory
import org.springframework.stereotype.Component

import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.Future
import scala.util.{Failure, Success}

@Component
class AkkaStreamFileProcessingImpl extends AkkaStreamFileProcessing {

  implicit val actorSystem: ActorSystem = ActorSystem("AkkaStreamActor")
  implicit val logger: Logger = Logger(LoggerFactory.getLogger(this.getClass))

  override def getAllMovies(): Unit = {

    val source: Source[Map[String, String], NotUsed] = buildAndValidateSource(inputFile = titleBasics)
    val sink: Sink[TvSeries, Future[Done]] = buildTvSeriesSink(logger = logger)

    val startingTime: Long = System.currentTimeMillis()

    //graph sink->flow->sink
    source
      .via(flow = buildTvSerieFlow())
      .runWith(sink = sink)
      .andThen {
        case Success(value) =>
          val elapsedTime: Long = (System.currentTimeMillis() - startingTime) / 1000
          logger.info(s"$value: successfully processing file, elapsed time $titleBasics: $elapsedTime sec")
        case Failure(error: Error) => logger.error(s"$error")
      }

  }

  override def getMoviesByTitle(moviePrimaryTitle: String): Unit = {

    val tvSeriesSource: Source[Map[String, String], NotUsed] = buildAndValidateSource(inputFile = titleBasics)
    val tvSeriesSink: Sink[TvSeries, Future[Done]] = buildTvSeriesSink(logger = logger)

    val filterByMovieTitleFlow: Flow[Map[String, String], TvSeries, NotUsed] =
      filterByMoviePrimaryTitleFlow(moviePrimaryTitle = moviePrimaryTitle)

    val startTime: Long = System.currentTimeMillis()
    val listTvSeries: Future[Done] = tvSeriesSource
      .via(flow = filterByMovieTitleFlow)
      .runWith(sink = tvSeriesSink)
      .andThen {
        case Success(value) =>
          val elapsedTime: Long = (System.currentTimeMillis() - startTime) / 1000
          logger.info(s"$value: successfully processing file, elapsed time: $elapsedTime sec")
        case Failure(error: Error) => logger.error(s"$error")
      }
  }

  override def getAllPersons(): Unit = {
    val personSource: Source[Map[String, String], NotUsed] = buildSource(inputFile = nameBasics)
    val personSink: Sink[Person, Future[Done]] = buildPersonSink(logger = logger)

    //graph
    val startTime: Long = System.currentTimeMillis()
    personSource
      .via(flow = buildPersonFlow())
      .runWith(sink = personSink)
      .andThen {
        case Success(value) =>
          val elapsedTime: Long = (System.currentTimeMillis() - startTime) / 1000
          logger.info(s"$value: successfully processing, elapsed time: $elapsedTime sec")
        case Failure(error: Error) => logger.error(s"$error")
      }
  }

  override def getPersonById(nconst: String): Unit = {
    val source: Source[Map[String, String], NotUsed] = buildSource(inputFile = nameBasics)

    val startTime: Long = System.currentTimeMillis()
    source
      .via(flow = filterByPersonIdFlow(nconst = nconst))
      .runWith(sink = buildPersonSink(logger = logger))
      .andThen {
        case Success(value) =>
          val elapsedTime: Long = (System.currentTimeMillis()-startTime)/1000
          logger.info(s"$value: Successfully processed, elapsed time: $elapsedTime")
        case Failure(exception) => logger.error(s"$exception: Fail")
      }
  }

  override def getPersonByName(primaryName: String): Unit = {
    val source: Source[Map[String, String], NotUsed] = buildSource(inputFile = nameBasics)
    source
      .via(
        flow = filterByPersonNameFlow(personName = primaryName)
      )
      .runWith(sink = buildPersonSink(logger = logger))
      .andThen {
        case Failure(exception) => logger.info(s"$exception")
        case Success(value) => logger.info(s"$value: Successufully processing")
      }
  }
}