Configuration Loader

import java.util.Map.Entry
import com.typesafe.config.{ConfigFactory, ConfigObject, ConfigValue}
import scala.collection.JavaConverters._
import scala.util.Properties

class Configuration(fileNameOption: Option[String] = None) {

  val config = fileNameOption.fold(ifEmpty = ConfigFactory.load())(file => ConfigFactory.load(file) )

  def envOrElseConfig(name: String): String = {
    Properties.envOrElse(
      name.toUpperCase.replaceAll("""\.""", "_"), config.getString(name)
    )
  }

  def getMap(name: String): Map[String, String] ={
      val list : Iterable[ConfigObject] = config.getObjectList(name).asScala
    (for {
        item : ConfigObject <- list
        entry : Entry[String, ConfigValue] <- item.entrySet().asScala
        key = entry.getKey
        value = entry.getValue.unwrapped().toString
      } yield (key, value)).toMap
  }

}