use annotations for DI rather than explicit module

package controllers.auth

import com.google.inject.Inject

import com.google.inject.{ImplementedBy, Inject, Singleton}

import controllers.auth.basic.BasicAuthService

import controllers.auth.ldap.LDAPAuthService

import play.api.Configuration

@ImplementedBy(classOf[AuthenticationModuleImpl])

trait AuthenticationModule {

  def authentication(username: String, password: String): Option[String]

}

@Singleton

class AuthenticationModuleImpl @Inject()(config: Configuration) extends AuthenticationModule {

  val service = config.getString("auth.type") match {

package controllers.auth

import com.google.inject.AbstractModule

class Module extends AbstractModule {

  def configure() = {

    bind(classOf[AuthenticationModule]).to(classOf[AuthenticationModuleImpl]).asEagerSingleton()

  }

}

 No newline at end of file

package elastic

import com.google.inject.ImplementedBy

import controllers.auth.AuthenticationModuleImpl

import models.ElasticServer

import play.api.libs.json._

import scala.concurrent.Future

@ImplementedBy(classOf[HTTPElasticClient])

trait ElasticClient {

  def main(target: ElasticServer): Future[ElasticResponse]

package elastic

import com.google.inject.AbstractModule

class ElasticModule extends AbstractModule {

  def configure() = {

    bind(classOf[ElasticClient]).to(classOf[HTTPElasticClient]).asEagerSingleton()

  }

}

# ~~~~~

play.i18n.langs=["en"]

play.modules.enabled += "controllers.auth.Module"

play.modules.enabled += "elastic.ElasticModule"

# The application base path

# ~~~~~

#play.http.context="/cerebro/"