gsmaverick

// Simple unit testing in wren.

class Spec {
  new(description, body) {
    _description = description

    if (_body.type == Fiber){
      _body = body
    } else {
      _body = new Fiber(body)

gsmaverick

case class S3File(id: String, path: String)

object S3File {
  implicit def s3FileFormat: Format[S3File] = Json.format[S3File]
  
  def generateSignedLink(path: String): String = ???
}

gsmaverick

object S3File {
  // ...
  def linkSigningS3FileWrites: Writes[S3File] = s3FileFormat.writes.transform(
    (JsPath \ "path").json.update(JsPath.read[JsString].map(path => {
      JsString(generateSignedLink(path))
    }))
  )
}

gsmaverick

import S3File

object HelloWorldController extends Controller {
  def index = {
    val file = S3File("id", "path/to/file")
    val json = Json.toJson(file)(S3File.linkSigningS3FileWrites)
    Ok(json)
  }  
}