trait Player extends Temp {

  val gameId: BSONObjectID

  val personalDetails: abc.PersonalDetails // <- comes from shared library

}

case class FootballPlayer(var _id: Option[BSONObjectID] = None,
                         gameId: BSONObjectID,
                         personalDetails: abc.PersonalDetails,
                         var created: Option[DateTime] = None,
                         var updated: Option[DateTime] = None
                        ) extends Player

case class VideogamePlayer(var _id: Option[BSONObjectID] = None,
                         gameId: BSONObjectID,
                         personalDetails: abc.PersonalDetails,
                         var created: Option[DateTime] = None,
                         var updated: Option[DateTime] = None
                        ) extends Player

trait PlayerDAO[T <: Player] {

  def findById(_id: BSONObjectID)(implicit reads: Reads[T]): Future[Option[T]]

  def insert(t: T)(implicit writes: OWrites[T]): Future[T]

}

class MongoPlayerDAO[T <: Player] @Inject()(
                                           playerRepository: PlayerRepository[T]
                                         ) extends PlayerDAO[T] {

  def findById(_id: BSONObjectID)(implicit reads: Reads[T]): Future[Option[T]] = playerRepository.findById(_id)

  def insert(t: T)(implicit writes: OWrites[T]): Future[T] = playerRepository.insert(t).map(_ => t)

}

class PlayerService[T <: Player] @Inject()(playerDAO: PlayerDAO[T])(implicit reads: Reads[T], writes: OWrites[T]) {

  def findById(_id: BSONObjectID): Future[Option[T]] = playerDAO.findById(_id)


  def save(t: T): Future[T] = playerDAO.save(t)

}

class PlayerModule extends AbstractModule with ScalaModule {

  def configure() {
    bind[PlayerDAO[FootballPlayer]].to[MongoPlayerDAO[FootballPlayer]]
    bind[PlayerDAO[VideogamePlayer]].to[MongoPlayerDAO[VideogamePlayer]]
    // ...
    ()
  }
}

import models.FootballPlayer._
import models.VideogamePlayer._

class PlayerController @Inject()(
                                 val messagesApi: MessagesApi,
                                 footballPlayerService: PlayerService[FootballPlayer],
                                 videogamePlayerService: PlayerService[VideogamePlayer]
                               ) extends Controller with I18nSupport