zio2-skunk-cats-interop.scala

// val skunkCore              = "0.3.2"
// val zioCats                = "3.3.0"
// val zioStreams             = "2.0.0"
// val skunkCore               = "org.tpolecat"                  %% "skunk-core"                    % V.skunkCore
// val zioCats                 = "dev.zio"                       %% "zio-interop-cats"              % V.zioCats
// val zioStreams              = "dev.zio"                       %% "zio-streams"                   % V.zioStreams
object Cats {
  import skunk._
  import skunk.implicits._
  import skunk.codec.all._
  import natchez.Trace.Implicits.noop
  import cats.effect._
  import natchez.Trace
  import fs2.io.net.Network
  import cats.effect.std.Console
  def catsProgram[F[_]: cats.effect.Async: Network: Console] = {
    val session =
      Session.single( // (2)
        host = "localhost",
        port = 5432,
        user = "jimmy",
        database = "world",
        password = Some("banana")
      )
    session.use { s =>                               // (3)
      s.unique(sql"select current_date".query(date)) // (4)
    }

  }
}

object ZioCatsEffectInteropWithCatsApp extends zio.interop.catz.CatsApp {
  import fs2.io.net.Network
  import cats.effect._
  def catsEffectApp[F[_]: cats.effect.Async: Network: std.Console] =
    Cats.catsProgram

  import zio.interop.catz._
  import zio.interop.console._
  import zio.interop.catz.implicits._
  import zio.Console._
  override def run = {
    implicit val consoleInst: std.Console[zio.Task] = std.Console.make
    val zioApp                                      = catsEffectApp[zio.Task]
    (for {
      d <- zioApp
      _ <- printLine(s"The current date is $d.")

    } yield d).exitCode

  }
}