/**
 * Generated by API Builder - https://www.apibuilder.io
 * Service version: 0.0.1
 * User agent: apibuilder app.apibuilder.io/nccloud/common/0.0.1/http4s_0_20
 */
package de.nccloud.common.v0 {
import cats.effect._
import cats.implicits._
import io.circe.syntax._

  object Constants {

    val Namespace = "de.nccloud.common.v0"
    val UserAgent = "apibuilder app.apibuilder.io/nccloud/common/0.0.1/http4s_0_20"
    val Version = "0.0.1"
    val VersionMajor = 0

  }

  class Client[F[_]: Sync](
    val baseUrl: org.http4s.Uri,
    auth: scala.Option[de.nccloud.common.v0.Authorization] = None,
    defaultHeaders: Seq[(String, String)] = Nil,
    httpClient: org.http4s.client.Client[F]
  ) extends interfaces.Client[F] {
    import org.http4s.Response
    import de.nccloud.common.v0.models.json._


    def healthChecks: HealthChecks[F] = HealthChecks

    def serviceInfos: ServiceInfos[F] = ServiceInfos

    object HealthChecks extends HealthChecks[F] {
      override def getHealthcheck(
        requestHeaders: Seq[(String, String)] = Nil
      ): F[de.nccloud.common.v0.models.HealthCheck] = {
        val urlPath = Seq("_internal_", "healthcheck")

        _executeRequest[Unit, de.nccloud.common.v0.models.HealthCheck]("GET", path = urlPath, requestHeaders = requestHeaders) {
          case r if r.status.code == 200 => _root_.de.nccloud.common.v0.Client.parseJson[F, de.nccloud.common.v0.models.HealthCheck]("de.nccloud.common.v0.models.HealthCheck", r)
          case r => Sync[F].raiseError(new de.nccloud.common.v0.errors.FailedRequest(r.status.code, s"Unsupported response code[${r.status.code}]. Expected: 200"))
        }
      }

      override def getProbeAndReady(
        requestHeaders: Seq[(String, String)] = Nil
      ): F[Unit] = {
        val urlPath = Seq("_internal_", "probe", "ready")

        _executeRequest[Unit, Unit]("GET", path = urlPath, requestHeaders = requestHeaders) {
          case r if r.status.code == 200 => Sync[F].pure(())
          case r if r.status.code == 400 => Sync[F].raiseError(new de.nccloud.common.v0.errors.UnitResponse(r.status.code))
          case r => Sync[F].raiseError(new de.nccloud.common.v0.errors.FailedRequest(r.status.code, s"Unsupported response code[${r.status.code}]. Expected: 200, 400"))
        }
      }

      override def getProbeAndLive(
        requestHeaders: Seq[(String, String)] = Nil
      ): F[Unit] = {
        val urlPath = Seq("_internal_", "probe", "live")

        _executeRequest[Unit, Unit]("GET", path = urlPath, requestHeaders = requestHeaders) {
          case r if r.status.code == 200 => Sync[F].pure(())
          case r => Sync[F].raiseError(new de.nccloud.common.v0.errors.FailedRequest(r.status.code, s"Unsupported response code[${r.status.code}]. Expected: 200"))
        }
      }
    }

    object ServiceInfos extends ServiceInfos[F] {
      override def getService(
        requestHeaders: Seq[(String, String)] = Nil
      ): F[de.nccloud.common.v0.models.ServiceInfo] = {
        val urlPath = Seq("_internal_", "service")

        _executeRequest[Unit, de.nccloud.common.v0.models.ServiceInfo]("GET", path = urlPath, requestHeaders = requestHeaders) {
          case r if r.status.code == 200 => _root_.de.nccloud.common.v0.Client.parseJson[F, de.nccloud.common.v0.models.ServiceInfo]("de.nccloud.common.v0.models.ServiceInfo", r)
          case r => Sync[F].raiseError(new de.nccloud.common.v0.errors.FailedRequest(r.status.code, s"Unsupported response code[${r.status.code}]. Expected: 200"))
        }
      }
    }

    private lazy val defaultApiHeaders = Seq(
      ("User-Agent", Constants.UserAgent),
      ("X-Apidoc-Version", Constants.Version),
      ("X-Apidoc-Version-Major", Constants.VersionMajor.toString)
    )

    def apiHeaders: Seq[(String, String)] = defaultApiHeaders

    def modifyRequest(request: org.http4s.Request[F]): org.http4s.Request[F] = request

    implicit def circeJsonEncoder[F[_]: Sync, A](implicit encoder: io.circe.Encoder[A]) = org.http4s.circe.jsonEncoderOf[F, A]

    def _executeRequest[T, U](
      method: String,
      path: Seq[String],
      queryParameters: Seq[(String, String)] = Nil,
      requestHeaders: Seq[(String, String)] = Nil,
      body: Option[T] = None,
      formBody : Option[org.http4s.UrlForm] = None
    )(handler: org.http4s.Response[F] => F[U]
    )(implicit encoder: io.circe.Encoder[T]): F[U] = {
      import org.http4s.QueryParamEncoder._

      val m = org.http4s.Method.fromString(method) match {
        case Right(m) => m
        case Left(e) => sys.error(e.toString)
      }

      val headers = org.http4s.Headers((
        apiHeaders ++
        defaultHeaders ++
        requestHeaders
      ).groupBy(_._1).map { case (k, l) => org.http4s.Header(k, l.last._2) }.toList)

      val queryMap = queryParameters.groupBy(_._1).map { case (k, v) => k -> v.map(_._2) }
      val uri = path.foldLeft(baseUrl){ case (uri, segment) => uri / segment }.setQueryParams(queryMap)

      val request = org.http4s.Request[F](method = m,
                                       uri = uri,
                                       headers = headers)

      val reqAndMaybeAuth = auth.fold(request) {
        case Authorization.Basic(username, passwordOpt) => {
          val userpass = s"$username:${passwordOpt.getOrElse("")}"
          val token = java.util.Base64.getEncoder.encodeToString(userpass.getBytes(java.nio.charset.StandardCharsets.ISO_8859_1))
          request.putHeaders(org.http4s.Header("Authorization", s"Basic $token"))
        }
        case a => sys.error("Invalid authorization scheme[" + a.getClass + "]")
      }

      val reqAndMaybeAuthAndBody =
        if (formBody.nonEmpty) formBody.fold(reqAndMaybeAuth)(reqAndMaybeAuth.withEntity)
        else body.fold(reqAndMaybeAuth)(reqAndMaybeAuth.withEntity)

      httpClient.fetch(modifyRequest(reqAndMaybeAuthAndBody))(handler)
    }
  }

  object Client {
    import cats.effect._

    implicit def circeJsonDecoder[F[_]: Sync, A](implicit decoder: io.circe.Decoder[A]) = org.http4s.circe.jsonOf[F, A]

    def parseJson[F[_]: Sync, T](
      className: String,
      r: org.http4s.Response[F]
    )(implicit decoder: io.circe.Decoder[T]): F[T] = r.attemptAs[T].value.flatMap {
      case Right(value) => Sync[F].pure(value)
      case Left(error) => Sync[F].raiseError(new de.nccloud.common.v0.errors.FailedRequest(r.status.code, s"Invalid json for class[" + className + "]", None, error))
    }
  }

  sealed trait Authorization extends _root_.scala.Product with _root_.scala.Serializable
  object Authorization {
    final case class Basic(username: String, password: Option[String] = None) extends Authorization
  }

  package interfaces {

    trait Client[F[_]] {
      def baseUrl: org.http4s.Uri
      def healthChecks: de.nccloud.common.v0.HealthChecks[F]
      def serviceInfos: de.nccloud.common.v0.ServiceInfos[F]
    }

  }

  trait HealthChecks[F[_]] {
    /**
     * Get the current health of the service.
     */
    def getHealthcheck(
      requestHeaders: Seq[(String, String)] = Nil
    ): F[de.nccloud.common.v0.models.HealthCheck]

    /**
     * Endpoint for readiness probe.
     */
    def getProbeAndReady(
      requestHeaders: Seq[(String, String)] = Nil
    ): F[Unit]

    /**
     * Endpoint for liveliness probe.
     */
    def getProbeAndLive(
      requestHeaders: Seq[(String, String)] = Nil
    ): F[Unit]
  }

  trait ServiceInfos[F[_]] {
    /**
     * Get information about the deployed service.
     */
    def getService(
      requestHeaders: Seq[(String, String)] = Nil
    ): F[de.nccloud.common.v0.models.ServiceInfo]
  }

  package errors {

    final case class UnitResponse(status: Int) extends Exception(s"HTTP $status")

    final case class FailedRequest(responseCode: Int, message: String, requestUri: Option[_root_.java.net.URI] = None, parent: Exception = null) extends _root_.java.lang.Exception(s"HTTP $responseCode: $message", parent)

  }
}