package scalevalapokalypsi.Client

/** `Turn`s represent information the client has got about a turn.
  *  This class exists essentially so that the client has somewhere
  *  to store data about turns and something to format that data with.
  */
class RoomState:

	/** Description of the area the player controlled by the client is in
	  * at the end of the turn. */
	var areaDescription: String = ""

	/** Directions the player controlled by the client can go to. */
	var possibleDirections: Array[String] = Array.empty

	/** Items the player controlled by the client can see. */
	var visibleItems: Array[String] = Array.empty

	/** Entities the player controlled by the client can see. */
	var visibleEntities: Array[String] = Array.empty

	override def toString: String =
		val directionDesc = iterableToString(this.possibleDirections)
			.map(s => s"Täältä pääsee $s.\n")
			.getOrElse("")
		val itemDesc = iterableToString(this.visibleItems)
			.map(s => s"Täällä on $s.\n")
			.getOrElse("")
		val entityDesc = iterableToString(this.visibleEntities)
			.map(s => s"Seuraavat olennot ovat täällä: $s.\n")
			.getOrElse("")
		s"$areaDescription\n$directionDesc$itemDesc$entityDesc".dropRight(1)

	private def iterableToString(iterable: Iterable[String]): Option[String] =
		Some("")
			.map(_ + iterable.dropRight(1).mkString(", "))
			.map(_ + (if iterable.size >= 2 then " ja " else ""))
			.map(_ + iterable.takeRight(1).headOption.getOrElse(""))
			.filter(_ != "")

end RoomState