http4s/rho

package com.kiwipowered.stakzcore.apidocs.rho

import cats.effect.{Async, IO, IOApp}
import org.http4s.circe.CirceEntityEncoder
import org.http4s.rho.RhoRoutes
import org.http4s.rho.swagger.models.{Info, Tag}
import org.http4s.rho.swagger.{SwaggerMetadata, SwaggerSupport, SwaggerSyntax}
import org.log4s.getLogger
import org.http4s.blaze.server.BlazeServerBuilder
import org.http4s.rho.swagger.syntax.{io => ioSwagger}

class MinimalExample [F[+_]: Async](swaggerSyntax: SwaggerSyntax[F])
  extends RhoRoutes[F]
    with CirceEntityEncoder {

  import swaggerSyntax._

  "Simple hello world route works with a path" **
    GET / "a" |>> Ok("Hello world!") // curl localhost:8080/a - gives Hello World!

  "Not happy when root" **
    GET / root |>> Ok("Hello world!") // curl localhost:8080 - gives not found
}

object Main extends IOApp.Simple {
  private val logger = getLogger

  private val port: Int = Option(System.getenv("HTTP_PORT"))
    .map(_.toInt)
    .getOrElse(8080)

  logger.info(s"Starting Swagger example on '$port'")

  def run: IO[Unit] = {
    val metadata = SwaggerMetadata(
      apiInfo = Info(title = "Rho demo", version = "1.2.3"),
      tags = List(Tag(name = "hello", description = Some("These are the hello routes.")))
    )

    val swaggerUiRhoMiddleware =
      SwaggerSupport[IO].createRhoMiddleware(swaggerMetadata = metadata)

    val myRoutes = new MinimalExample[IO](ioSwagger).toRoutes(swaggerUiRhoMiddleware)

    BlazeServerBuilder[IO]
      .withHttpApp(myRoutes.orNotFound)
      .bindLocal(port)
      .serve
      .compile
      .drain
  }
}