I have a Scala Play endpoint that returns complex JSON configuration that has a structure like this:

Configuration    
|__ DBConfig
    |__ SecretDef
|__ SecondDBConfig
    |__ SecretDef
|__ AuthConfig
    |__ SecretDef

There’s more than 20 implicit formatters used to serialize this configuration and one for SecretDef looks like:

  implicit val fSecretFormat: Format[SecretDef] = new Format[SecretDef] {
    override def writes(o: SecretDef): JsValue = 
      Json.toJson(o.value)

    override def reads(json: JsValue): JsResult[SecretDef] = ???
  }

I need to implement another version of the same endpoint that returns whole configuration but with defrent version of writes for SecretDef:

  implicit val fSecretFormatDec: Format[SecretDef] = new Format[SecretDef] {
    override def writes(o: SecretDef): JsValue = 
      Json.toJson(decryptWithAES(o.value))

    override def reads(json: JsValue): JsResult[SecretDef] = ???
  }

Within controllers I’m importing all implicits, but I have a problem to swap implicit formatter for SecretDef in particular action for V2 endpoint.

Something like this would be ideal, but it doesn’t work:

      Action.async { implicit request =>
        implicit val fSecret: Format[SecretDef] = utils.SecretFormatters.fSecretFormatEnc
        for {
          config <- configRepo.getConfig()
        } yield Ok(Json.toJson(tenant))
      }