Restructure using EIP-ZIO channels (#183)

* [sbt] Rename storage-api as storage

* [storage] remove dependency upon console

* [storage] remove dependency upon config

* [console] remove dependency upon config

* [sbt] Add app module

Make cli module actually cli, by moving CliArgs parser into it and
Main and Program into app.

* add app that depends on cli and thorp-lib
* move non-cli specific to app
* make cli depend on config
* make cli not depend on thorp-lib

* [sbt] make module dependencies more explicit

* make app depend on storage-aws
* make cli depend on filesystem's tests
* make thorp-lib depend on core
* make thorp-lib not depend on storage-aws
* make storage-aws not depend on core's tests
* make storage-aws depend on storage
* make storage-aws depend on filesystem and its tests
* make storage-aws depend on console
* make storage-aws depend on core
* make core depend on filesystem and its tests
* make filesystem depend on domain and its tests

* [sbt] merge thorp-lib with core as lib

* [sbt] add zio streams

* [lib] Add EIPTest

* [sbt] Allow NonUnitStatements

* [lib] EIPTest Message Channel rewritten using ZIO Stream

* [sbt] Add eip-zip 0.2.0 as dependency in lib

* Remove file counter and total upload size progress

Simplifying UnversionedMirrorArchive so we can create it before we
know what actions are needed.

* Fetch Remote Data before preparing any plans

* [domain] RemoteObjects only holds a single RemoteKey per Hash

Having multiple keys for a hash is redundant. They are only used to
create copy commands, and only one source remote key is needed for
that.

* [lib] Add a State trait

* [lib] Add FileScanner

* Add FileSystem.length(File)

* Add Clock to the Environment

* [domain] Sources update format

* [domain] Asking for a path that isn't in any Sources is fatal

There should never be any situation where are path not within a Source
is supplied. If there is, then something is badly wrong.

* [lib] Add test on use of zio.Ref

* [uishell] Add stub module

* [sbt] Upgrade eip-zio from 0.2.0 to 0.3.0

* [uishell] Add UIEvent stub

* [uishell] Add UIShell stub

* [sbt] Add eip-zio dependencies to app module

* [app] Wrap existing execution in simple point to point channel

* [uishell] Add UIEvent.ShowValidConfig

* [app] Remember to end the channel to allow prog to exit

* [app] purify environment for showValidConfig

* [app] Create type alias for pure effect free channel ref

* [app] Program refactoring

* [uishell] Add UIEvent.RemoteDataFetched

* [domain] Move Counters from lib

* [uishell] Add UIEvent.ShowSummary

* [lib] Add stub for PushLocalChanges

* [lib] Clean up FileScanner Environment types

* [lib] End channel after scanning files

* [lib] PushLocalChanges uses FileScanner

Scans files and sends them to a dummy receiver.

* [uishell] Add UIEvent.FileFound

* [lib] rename PushLocalChanges.apply as LocalFielSystem.scanCopyUpload

* [lib] FileScanner return LocalFile

* [domain] add length to LocalFile

* [domain] Add interogation queries to RemoteObjects

* [domain] Remove RemoteObject.keyForHashes

* [domain] RemoteObjects.remoteHasHash return the key and the hash

* [lib] LocalFileSystem.scanCopyUpload create Actions

* [domain] Move Action from lib

* [uishell] Log actions

* [lib] FileScanner respects Filters

* [lib] Create remoteKey for files correctly

* [lib] LocalFileSystem refactoring

* [lib] ThorpArchive.update doesn't need Console

* [uishell] Don't log choosen Action

* [uishell] Add UIEvent.ActionFinished

* [lib] LocalFileSystem refactoring

* [lib] Switch to using LocalFileSystem to do Copy/Upload

Todo or Broken:

- [ ] Delete actions don't happen
- [ ] Counters in summary are all zeros

* [lib] LocalFileStream display summary counters correctly

* [app] Restore ability to delete remote files

* [lib] LocalFileSystem deletes remote when local does NOT exist

* [filesystem] move hasLocalFile to FileSystem

* [filesystem] fix detection of local files from a RemoteKey

The configured Prefix wasn't being taken into account, meaning that
the expected local file for a RemoteKey was wrong.

* [filesystem] fix broken FileSystem test

* [domain] fix RemoteKey test

* [sbt] Upgrade eip-zio to 0.3.1 for zio-stream 1.0.0-RC12-1 compatibility

* [app] Program refactorting

* [lib] Remove unused class

* [lib] Remove test

* [uishell] Refactor large method

app/src/main/scala/net/kemitix/thorp/Main.scala

@@ -1,10 +1,12 @@
-package net.kemitix.thorp.cli
+package net.kemitix.thorp
 
 import net.kemitix.thorp.config.Config
 import net.kemitix.thorp.console.Console
 import net.kemitix.thorp.filesystem.FileSystem
+import net.kemitix.thorp.lib.FileScanner
 import net.kemitix.thorp.storage.aws.S3Storage
 import net.kemitix.thorp.storage.aws.hasher.S3Hasher
+import zio.clock.Clock
 import zio.{App, ZIO}
 
 object Main extends App {
@@ -12,9 +14,11 @@ object Main extends App {
   object LiveThorpApp
       extends S3Storage.Live
       with Console.Live
+      with Clock.Live
       with Config.Live
       with FileSystem.Live
       with S3Hasher.Live
+      with FileScanner.Live
 
   override def run(args: List[String]): ZIO[Environment, Nothing, Int] =
     Program

app/src/main/scala/net/kemitix/thorp/Program.scala

@@ -0,0 +1,111 @@
+package net.kemitix.thorp
+
+import net.kemitix.eip.zio.MessageChannel.UChannel
+import net.kemitix.eip.zio.{Message, MessageChannel}
+import net.kemitix.thorp.cli.CliArgs
+import net.kemitix.thorp.config._
+import net.kemitix.thorp.console._
+import net.kemitix.thorp.domain.{Counters, StorageQueueEvent}
+import net.kemitix.thorp.domain.StorageQueueEvent.{
+  CopyQueueEvent,
+  DeleteQueueEvent,
+  ErrorQueueEvent,
+  UploadQueueEvent
+}
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher}
+import net.kemitix.thorp.lib.CoreTypes.CoreProgram
+import net.kemitix.thorp.lib._
+import net.kemitix.thorp.storage.Storage
+import net.kemitix.throp.uishell.{UIEvent, UIShell}
+import zio.clock.Clock
+import zio.{RIO, UIO, ZIO}
+
+trait Program {
+
+  lazy val version = s"Thorp v${thorp.BuildInfo.version}"
+
+  def run(args: List[String]): CoreProgram[Unit] = {
+    for {
+      cli    <- CliArgs.parse(args)
+      config <- ConfigurationBuilder.buildConfig(cli)
+      _      <- Config.set(config)
+      _      <- ZIO.when(showVersion(cli))(Console.putStrLn(version))
+      _      <- ZIO.when(!showVersion(cli))(executeWithUI.catchAll(handleErrors))
+    } yield ()
+  }
+
+  private def showVersion: ConfigOptions => Boolean =
+    cli => ConfigQuery.showVersion(cli)
+
+  private def executeWithUI =
+    for {
+      uiEventSender   <- execute
+      uiEventReceiver <- UIShell.receiver
+      _               <- MessageChannel.pointToPoint(uiEventSender)(uiEventReceiver).runDrain
+    } yield ()
+
+  type UIChannel = UChannel[Any, UIEvent]
+
+  private def execute
+    : ZIO[Any,
+          Nothing,
+          MessageChannel.ESender[
+            Storage with Config with FileSystem with Hasher with Clock with FileScanner,
+            Throwable,
+            UIEvent]] = UIO { uiChannel =>
+    (for {
+      _          <- showValidConfig(uiChannel)
+      remoteData <- fetchRemoteData(uiChannel)
+      archive    <- UIO(UnversionedMirrorArchive)
+      copyUploadEvents <- LocalFileSystem.scanCopyUpload(uiChannel,
+                                                         remoteData,
+                                                         archive)
+      deleteEvents <- LocalFileSystem.scanDelete(uiChannel, remoteData, archive)
+      _            <- showSummary(uiChannel)(copyUploadEvents ++ deleteEvents)
+    } yield ()) <* MessageChannel.endChannel(uiChannel)
+  }
+
+  private def showValidConfig(uiChannel: UIChannel) =
+    Message.create(UIEvent.ShowValidConfig) >>= MessageChannel.send(uiChannel)
+
+  private def fetchRemoteData(uiChannel: UIChannel) =
+    for {
+      bucket  <- Config.bucket
+      prefix  <- Config.prefix
+      objects <- Storage.list(bucket, prefix)
+      _ <- Message.create(UIEvent.RemoteDataFetched(objects.byKey.size)) >>= MessageChannel
+        .send(uiChannel)
+    } yield objects
+
+  private def handleErrors(throwable: Throwable) =
+    Console.putStrLn("There were errors:") *> logValidationErrors(throwable)
+
+  private def logValidationErrors(throwable: Throwable) =
+    throwable match {
+      case ConfigValidationException(errors) =>
+        ZIO.foreach_(errors)(error => Console.putStrLn(s"- $error"))
+    }
+
+  private def showSummary(uiChannel: UIChannel)(
+      events: Seq[StorageQueueEvent]): RIO[Clock, Unit] = {
+    val counters = events.foldLeft(Counters.empty)(countActivities)
+    Message.create(UIEvent.ShowSummary(counters)) >>=
+      MessageChannel.send(uiChannel)
+  }
+
+  private def countActivities: (Counters, StorageQueueEvent) => Counters =
+    (counters: Counters, s3Action: StorageQueueEvent) => {
+      val increment: Int => Int = _ + 1
+      s3Action match {
+        case _: UploadQueueEvent =>
+          Counters.uploaded.modify(increment)(counters)
+        case _: CopyQueueEvent   => Counters.copied.modify(increment)(counters)
+        case _: DeleteQueueEvent => Counters.deleted.modify(increment)(counters)
+        case _: ErrorQueueEvent  => Counters.errors.modify(increment)(counters)
+        case _                   => counters
+      }
+    }
+
+}
+
+object Program extends Program

build.sbt

@@ -24,7 +24,6 @@ val commonSettings = Seq(
     "-deprecation",
     "-unchecked",
     "-language:postfixOps",
-    "-language:higherKinds",
     "-language:higherKinds"),
   wartremoverErrors ++= Warts.unsafe.filterNot(wart => List(
     Wart.Any,
@@ -61,27 +60,26 @@ val awsSdkDependencies = Seq(
 )
 val zioDependencies = Seq(
   libraryDependencies ++= Seq (
-    "dev.zio" %% "zio" % "1.0.0-RC12-1"
+    "dev.zio" %% "zio" % "1.0.0-RC12-1",
+    "dev.zio" %% "zio-streams" % "1.0.0-RC12-1"
   )
 )
 
-// cli -> thorp-lib -> storage-aws -> core -> storage-api -> console -> config -> domain
-//                                            storage-api ->            config -> filesystem
+val eipDependencies = Seq(
+  libraryDependencies ++= Seq(
+    "net.kemitix" %% "eip-zio" % "0.3.1"
+  )
+)
 
 lazy val thorp = (project in file("."))
   .settings(commonSettings)
-  .aggregate(cli, `thorp-lib`, `storage-aws`, core, `storage-api`, domain)
+  .aggregate(app, cli, `storage-aws`, lib, `storage`, domain)
 
-lazy val cli = (project in file("cli"))
+lazy val app = (project in file("app"))
   .settings(commonSettings)
-  .settings(mainClass in assembly := Some("net.kemitix.thorp.cli.Main"))
+  .settings(mainClass in assembly := Some("net.kemitix.thorp.Main"))
   .settings(applicationSettings)
-  .settings(testDependencies)
-  .enablePlugins(BuildInfoPlugin)
-  .settings(
-    buildInfoKeys := Seq[BuildInfoKey](name, version),
-    buildInfoPackage := "thorp"
-  )
+  .settings(eipDependencies)
   .settings(Seq(
     assemblyOption in assembly := (
       assemblyOption in assembly).value
@@ -89,39 +87,62 @@ lazy val cli = (project in file("cli"))
         Some(defaultShellScript)),
     assemblyJarName in assembly := "thorp"
   ))
-  .dependsOn(`thorp-lib`)
-
-lazy val `thorp-lib` = (project in file("thorp-lib"))
-  .settings(commonSettings)
-  .settings(assemblyJarName in assembly := "thorp-lib.jar")
+  .dependsOn(cli)
+  .dependsOn(lib)
   .dependsOn(`storage-aws`)
 
+lazy val cli = (project in file("cli"))
+  .settings(commonSettings)
+  .settings(testDependencies)
+  .dependsOn(config)
+  .dependsOn(filesystem % "test->test")
+
 lazy val `storage-aws` = (project in file("storage-aws"))
   .settings(commonSettings)
   .settings(assemblyJarName in assembly := "storage-aws.jar")
   .settings(awsSdkDependencies)
   .settings(testDependencies)
-  .dependsOn(core % "compile->compile;test->test")
+  .dependsOn(storage)
+  .dependsOn(filesystem % "compile->compile;test->test")
+  .dependsOn(console)
+  .dependsOn(lib)
 
-lazy val core = (project in file("core"))
+lazy val lib = (project in file("lib"))
   .settings(commonSettings)
-  .settings(assemblyJarName in assembly := "core.jar")
+  .settings(assemblyJarName in assembly := "lib.jar")
   .settings(testDependencies)
-  .dependsOn(`storage-api`)
-  .dependsOn(domain % "compile->compile;test->test")
-
-lazy val `storage-api` = (project in file("storage-api"))
-  .settings(commonSettings)
-  .settings(zioDependencies)
-  .settings(assemblyJarName in assembly := "storage-api.jar")
+  .enablePlugins(BuildInfoPlugin)
+  .settings(
+    buildInfoKeys := Seq[BuildInfoKey](name, version),
+    buildInfoPackage := "thorp"
+  )
+  .dependsOn(storage)
   .dependsOn(console)
   .dependsOn(config)
+  .dependsOn(domain % "compile->compile;test->test")
+  .dependsOn(filesystem % "compile->compile;test->test")
+
+lazy val storage = (project in file("storage"))
+  .settings(commonSettings)
+  .settings(zioDependencies)
+  .settings(assemblyJarName in assembly := "storage.jar")
+  .dependsOn(uishell)
+  .dependsOn(domain)
+
+lazy val uishell = (project in file("uishell"))
+  .settings(commonSettings)
+  .settings(zioDependencies)
+  .settings(eipDependencies)
+  .settings(assemblyJarName in assembly := "uishell.jar")
+  .dependsOn(config)
+  .dependsOn(console)
+  .dependsOn(filesystem)
 
 lazy val console = (project in file("console"))
   .settings(commonSettings)
   .settings(zioDependencies)
   .settings(assemblyJarName in assembly := "console.jar")
-  .dependsOn(config)
+  .dependsOn(domain)
 
 lazy val config = (project in file("config"))
   .settings(commonSettings)
@@ -137,6 +158,7 @@ lazy val filesystem = (project in file("filesystem"))
   .settings(zioDependencies)
   .settings(testDependencies)
   .settings(assemblyJarName in assembly := "filesystem.jar")
+  .dependsOn(domain % "compile->compile;test->test")
 
 lazy val domain = (project in file("domain"))
   .settings(commonSettings)

cli/src/main/scala/net/kemitix/thorp/cli/CliArgs.scala

@@ -1,7 +1,8 @@
-package net.kemitix.thorp.config
+package net.kemitix.thorp.cli
 
 import java.nio.file.Paths
 
+import net.kemitix.thorp.config.{ConfigOption, ConfigOptions}
 import scopt.OParser
 import zio.Task
 

cli/src/main/scala/net/kemitix/thorp/cli/Program.scala

@@ -1,46 +0,0 @@
-package net.kemitix.thorp.cli
-
-import net.kemitix.thorp.config._
-import net.kemitix.thorp.console._
-import net.kemitix.thorp.core.CoreTypes.CoreProgram
-import net.kemitix.thorp.core._
-import zio.ZIO
-
-trait Program {
-
-  lazy val version = s"Thorp v${thorp.BuildInfo.version}"
-
-  def run(args: List[String]): CoreProgram[Unit] = {
-    for {
-      cli    <- CliArgs.parse(args)
-      config <- ConfigurationBuilder.buildConfig(cli)
-      _      <- Config.set(config)
-      _      <- ZIO.when(showVersion(cli))(Console.putStrLn(version))
-      _      <- ZIO.when(!showVersion(cli))(execute.catchAll(handleErrors))
-    } yield ()
-  }
-
-  private def showVersion: ConfigOptions => Boolean =
-    cli => ConfigQuery.showVersion(cli)
-
-  private def execute =
-    for {
-      _        <- SyncLogging.logRunStart
-      syncPlan <- PlanBuilder.createPlan
-      archive  <- UnversionedMirrorArchive.default(syncPlan.syncTotals)
-      events   <- PlanExecutor.executePlan(archive, syncPlan)
-      _        <- SyncLogging.logRunFinished(events)
-    } yield ()
-
-  private def handleErrors(throwable: Throwable) =
-    Console.putStrLn("There were errors:") *> logValidationErrors(throwable)
-
-  private def logValidationErrors(throwable: Throwable) =
-    throwable match {
-      case ConfigValidationException(errors) =>
-        ZIO.foreach_(errors)(error => Console.putStrLn(s"- $error"))
-    }
-
-}
-
-object Program extends Program

cli/src/test/scala/net/kemitix/thorp/cli/CliArgsTest.scala

@@ -1,8 +1,10 @@
-package net.kemitix.thorp.config
+package net.kemitix.thorp.cli
 
 import java.nio.file.Paths
 
 import net.kemitix.thorp.config.ConfigOption.Debug
+import net.kemitix.thorp.config.{ConfigOptions, ConfigQuery}
+import net.kemitix.thorp.filesystem.Resource
 import org.scalatest.FunSpec
 import zio.DefaultRuntime
 

console/src/main/scala/net/kemitix/thorp/console/Console.scala

@@ -3,7 +3,6 @@ package net.kemitix.thorp.console
 import java.io.PrintStream
 import java.util.concurrent.atomic.AtomicReference
 
-import net.kemitix.thorp.config.Config
 import zio.{UIO, ZIO}
 
 import scala.{Console => SConsole}
@@ -61,8 +60,8 @@ object Console {
   final def putMessageLn(line: ConsoleOut): ZIO[Console, Nothing, Unit] =
     ZIO.accessM(_.console putMessageLn line)
 
-  final def putMessageLnB(
-      line: ConsoleOut.WithBatchMode): ZIO[Console with Config, Nothing, Unit] =
-    ZIO.accessM(line() >>= _.console.putStrLn)
+  final def putMessageLnB(line: ConsoleOut.WithBatchMode,
+                          batchMode: Boolean): ZIO[Console, Nothing, Unit] =
+    ZIO.accessM(line(batchMode) >>= _.console.putStrLn)
 
 }

console/src/main/scala/net/kemitix/thorp/console/ConsoleOut.scala

@@ -1,10 +1,9 @@
 package net.kemitix.thorp.console
 
-import net.kemitix.thorp.config.Config
 import net.kemitix.thorp.domain.StorageQueueEvent.Action
 import net.kemitix.thorp.domain.Terminal._
 import net.kemitix.thorp.domain.{Bucket, RemoteKey, Sources}
-import zio.{UIO, ZIO}
+import zio.UIO
 
 import scala.io.AnsiColor._
 
@@ -17,8 +16,8 @@ object ConsoleOut {
   sealed trait WithBatchMode {
     def en: String
     def enBatch: String
-    def apply(): ZIO[Config, Nothing, String] =
-      Config.batchMode >>= selectLine
+    def apply(batchMode: Boolean): UIO[String] =
+      selectLine(batchMode)
     private def selectLine(batchMode: Boolean) =
       if (batchMode) UIO(enBatch) else UIO(en)
   }

core/src/main/scala/net/kemitix/thorp/core/CoreTypes.scala

@@ -1,15 +0,0 @@
-package net.kemitix.thorp.core
-
-import net.kemitix.thorp.config.Config
-import net.kemitix.thorp.console.Console
-import net.kemitix.thorp.core.hasher.Hasher
-import net.kemitix.thorp.filesystem.FileSystem
-import net.kemitix.thorp.storage.api.Storage
-import zio.ZIO
-
-object CoreTypes {
-
-  type CoreEnv        = Storage with Console with Config with FileSystem with Hasher
-  type CoreProgram[A] = ZIO[CoreEnv, Throwable, A]
-
-}

core/src/main/scala/net/kemitix/thorp/core/S3MetaDataEnricher.scala

@@ -1,40 +0,0 @@
-package net.kemitix.thorp.core
-
-import net.kemitix.thorp.domain._
-
-object S3MetaDataEnricher {
-
-  def getMetadata(
-      localFile: LocalFile,
-      remoteObjects: RemoteObjects
-  ): MatchedMetadata = {
-    val (keyMatches, hashMatches) = getS3Status(localFile, remoteObjects)
-    MatchedMetadata(
-      localFile,
-      matchByKey = keyMatches.map { hash =>
-        RemoteMetaData(localFile.remoteKey, hash)
-      },
-      matchByHash = hashMatches.map {
-        case (key, hash) => RemoteMetaData(key, hash)
-      }
-    )
-  }
-
-  def getS3Status(
-      localFile: LocalFile,
-      remoteObjects: RemoteObjects
-  ): (Option[MD5Hash], Set[(RemoteKey, MD5Hash)]) = {
-    val matchingByKey = remoteObjects.byKey.get(localFile.remoteKey)
-    val matchingByHash = localFile.hashes
-      .map {
-        case (_, md5Hash) =>
-          remoteObjects.byHash
-            .getOrElse(md5Hash, Set())
-            .map(key => (key, md5Hash))
-      }
-      .flatten
-      .toSet
-    (matchingByKey, matchingByHash)
-  }
-
-}

core/src/main/scala/net/kemitix/thorp/core/SyncLogging.scala

@@ -1,58 +0,0 @@
-package net.kemitix.thorp.core
-
-import net.kemitix.thorp.config.Config
-import net.kemitix.thorp.console._
-import net.kemitix.thorp.domain.StorageQueueEvent.{
-  CopyQueueEvent,
-  DeleteQueueEvent,
-  ErrorQueueEvent,
-  UploadQueueEvent
-}
-import net.kemitix.thorp.domain._
-import net.kemitix.thorp.domain.Terminal.eraseToEndOfScreen
-import zio.ZIO
-
-trait SyncLogging {
-
-  def logRunStart: ZIO[Console with Config, Nothing, Unit] =
-    for {
-      bucket  <- Config.bucket
-      prefix  <- Config.prefix
-      sources <- Config.sources
-      _       <- Console.putMessageLn(ConsoleOut.ValidConfig(bucket, prefix, sources))
-    } yield ()
-
-  def logFileScan: ZIO[Config with Console, Nothing, Unit] =
-    for {
-      sources <- Config.sources
-      _ <- Console.putStrLn(
-        s"Scanning local files: ${sources.paths.mkString(", ")}...")
-    } yield ()
-
-  def logRunFinished(
-      actions: Seq[StorageQueueEvent]
-  ): ZIO[Console, Nothing, Unit] = {
-    val counters = actions.foldLeft(Counters.empty)(countActivities)
-    Console.putStrLn(eraseToEndOfScreen) *>
-      Console.putStrLn(s"Uploaded ${counters.uploaded} files") *>
-      Console.putStrLn(s"Copied   ${counters.copied} files") *>
-      Console.putStrLn(s"Deleted  ${counters.deleted} files") *>
-      Console.putStrLn(s"Errors   ${counters.errors}")
-  }
-
-  private def countActivities: (Counters, StorageQueueEvent) => Counters =
-    (counters: Counters, s3Action: StorageQueueEvent) => {
-      import Counters._
-      val increment: Int => Int = _ + 1
-      s3Action match {
-        case _: UploadQueueEvent => uploaded.modify(increment)(counters)
-        case _: CopyQueueEvent   => copied.modify(increment)(counters)
-        case _: DeleteQueueEvent => deleted.modify(increment)(counters)
-        case _: ErrorQueueEvent  => errors.modify(increment)(counters)
-        case _                   => counters
-      }
-    }
-
-}
-
-object SyncLogging extends SyncLogging

core/src/main/scala/net/kemitix/thorp/core/ThorpArchive.scala

@@ -1,38 +0,0 @@
-package net.kemitix.thorp.core
-
-import net.kemitix.thorp.config.Config
-import net.kemitix.thorp.console.ConsoleOut.{
-  CopyComplete,
-  DeleteComplete,
-  ErrorQueueEventOccurred,
-  UploadComplete
-}
-import net.kemitix.thorp.console._
-import net.kemitix.thorp.domain.StorageQueueEvent
-import net.kemitix.thorp.domain.StorageQueueEvent._
-import net.kemitix.thorp.storage.api.Storage
-import zio.{RIO, ZIO}
-
-trait ThorpArchive {
-
-  def update(
-      sequencedAction: SequencedAction,
-      totalBytesSoFar: Long
-  ): RIO[Storage with Console with Config, StorageQueueEvent]
-
-  def logEvent(
-      event: StorageQueueEvent): RIO[Console with Config, StorageQueueEvent] =
-    event match {
-      case UploadQueueEvent(remoteKey, _) =>
-        ZIO(event) <* Console.putMessageLnB(UploadComplete(remoteKey))
-      case CopyQueueEvent(sourceKey, targetKey) =>
-        ZIO(event) <* Console.putMessageLnB(CopyComplete(sourceKey, targetKey))
-      case DeleteQueueEvent(remoteKey) =>
-        ZIO(event) <* Console.putMessageLnB(DeleteComplete(remoteKey))
-      case ErrorQueueEvent(action, _, e) =>
-        ZIO(event) <* Console.putMessageLnB(ErrorQueueEventOccurred(action, e))
-      case DoNothingQueueEvent(_) => ZIO(event)
-      case ShutdownQueueEvent()   => ZIO(event)
-    }
-
-}

core/src/main/scala/net/kemitix/thorp/core/UnversionedMirrorArchive.scala

@@ -1,52 +0,0 @@
-package net.kemitix.thorp.core
-
-import net.kemitix.thorp.config.Config
-import net.kemitix.thorp.console._
-import net.kemitix.thorp.core.Action.{DoNothing, ToCopy, ToDelete, ToUpload}
-import net.kemitix.thorp.domain.StorageQueueEvent.DoNothingQueueEvent
-import net.kemitix.thorp.domain._
-import net.kemitix.thorp.storage.api.Storage
-import zio.{Task, RIO}
-
-final case class UnversionedMirrorArchive(syncTotals: SyncTotals)
-    extends ThorpArchive {
-
-  override def update(
-      sequencedAction: SequencedAction,
-      totalBytesSoFar: Long
-  ): RIO[Storage with Console with Config, StorageQueueEvent] =
-    sequencedAction match {
-      case SequencedAction(ToUpload(bucket, localFile, _), index) =>
-        doUpload(index, totalBytesSoFar, bucket, localFile) >>= logEvent
-      case SequencedAction(ToCopy(bucket, sourceKey, hash, targetKey, _), _) =>
-        Storage.copy(bucket, sourceKey, hash, targetKey) >>= logEvent
-      case SequencedAction(ToDelete(bucket, remoteKey, _), _) =>
-        Storage.delete(bucket, remoteKey) >>= logEvent
-      case SequencedAction(DoNothing(_, remoteKey, _), _) =>
-        Task(DoNothingQueueEvent(remoteKey))
-    }
-
-  private def doUpload(
-      index: Int,
-      totalBytesSoFar: Long,
-      bucket: Bucket,
-      localFile: LocalFile
-  ) =
-    Storage.upload(
-      localFile,
-      bucket,
-      UploadEventListener.Settings(
-        localFile,
-        index,
-        syncTotals,
-        totalBytesSoFar
-      )
-    )
-}
-
-object UnversionedMirrorArchive {
-  def default(syncTotals: SyncTotals): Task[ThorpArchive] =
-    Task {
-      new UnversionedMirrorArchive(syncTotals)
-    }
-}

domain/src/main/scala/net/kemitix/thorp/domain/Action.scala

@@ -1,6 +1,4 @@
-package net.kemitix.thorp.core
-
-import net.kemitix.thorp.domain.{Bucket, LocalFile, MD5Hash, RemoteKey}
+package net.kemitix.thorp.domain
 
 sealed trait Action {
   def bucket: Bucket

domain/src/main/scala/net/kemitix/thorp/domain/Counters.scala

@@ -1,6 +1,4 @@
-package net.kemitix.thorp.core
-
-import net.kemitix.thorp.domain.SimpleLens
+package net.kemitix.thorp.domain
 
 final case class Counters(
     uploaded: Int,

domain/src/main/scala/net/kemitix/thorp/domain/LocalFile.scala

@@ -10,7 +10,8 @@ final case class LocalFile private (
     file: File,
     source: File,
     hashes: Map[HashType, MD5Hash],
-    remoteKey: RemoteKey
+    remoteKey: RemoteKey,
+    length: Long
 )
 
 object LocalFile {

domain/src/main/scala/net/kemitix/thorp/domain/MatchedMetadata.scala

@@ -3,6 +3,6 @@ package net.kemitix.thorp.domain
 // For the LocalFile, the set of matching S3 objects with the same MD5Hash, and any S3 object with the same remote key
 final case class MatchedMetadata(
     localFile: LocalFile,
-    matchByHash: Set[RemoteMetaData], //TODO Can this be an Option?
+    matchByHash: Option[RemoteMetaData],
     matchByKey: Option[RemoteMetaData]
 )

domain/src/main/scala/net/kemitix/thorp/domain/RemoteKey.scala

@@ -2,23 +2,34 @@ package net.kemitix.thorp.domain
 
 import java.io.File
 import java.nio.file.{Path, Paths}
+
 import Implicits._
+import zio.UIO
 
 final case class RemoteKey(key: String)
 
 object RemoteKey {
+
   val key: SimpleLens[RemoteKey, String] =
     SimpleLens[RemoteKey, String](_.key, b => a => b.copy(key = a))
+
   def asFile(source: Path, prefix: RemoteKey)(
       remoteKey: RemoteKey): Option[File] =
-    if (remoteKey.key.length === 0) None
+    if (remoteKey.key.length === 0 || !remoteKey.key.startsWith(prefix.key))
+      None
     else Some(source.resolve(RemoteKey.relativeTo(prefix)(remoteKey)).toFile)
-  def relativeTo(prefix: RemoteKey)(remoteKey: RemoteKey): Path = {
-    prefix match {
+
+  def relativeTo(prefix: RemoteKey)(remoteKey: RemoteKey): Path = prefix match {
     case RemoteKey("") => Paths.get(remoteKey.key)
     case _             => Paths.get(prefix.key).relativize(Paths.get(remoteKey.key))
   }
-  }
+
   def resolve(path: String)(remoteKey: RemoteKey): RemoteKey =
     RemoteKey(List(remoteKey.key, path).filterNot(_.isEmpty).mkString("/"))
+
+  def fromSourcePath(source: Path, path: Path): RemoteKey =
+    RemoteKey(source.relativize(path).toString)
+
+  def from(source: Path, prefix: RemoteKey, file: File): UIO[RemoteKey] =
+    UIO(RemoteKey.resolve(source.relativize(file.toPath).toString)(prefix))
 }

domain/src/main/scala/net/kemitix/thorp/domain/RemoteObjects.scala

@@ -1,18 +1,45 @@
 package net.kemitix.thorp.domain
 
+import zio.UIO
+
 import scala.collection.MapView
 
 /**
   * A list of objects and their MD5 hash values.
   */
 final case class RemoteObjects private (
-    byHash: MapView[MD5Hash, Set[RemoteKey]],
+    byHash: MapView[MD5Hash, RemoteKey],
     byKey: MapView[RemoteKey, MD5Hash]
 )
 
 object RemoteObjects {
+
   val empty: RemoteObjects = RemoteObjects(MapView.empty, MapView.empty)
-  def create(byHash: MapView[MD5Hash, Set[RemoteKey]],
+
+  def create(byHash: MapView[MD5Hash, RemoteKey],
              byKey: MapView[RemoteKey, MD5Hash]): RemoteObjects =
     RemoteObjects(byHash, byKey)
+
+  def remoteKeyExists(
+      remoteObjects: RemoteObjects,
+      remoteKey: RemoteKey
+  ): UIO[Boolean] = UIO(remoteObjects.byKey.contains(remoteKey))
+
+  def remoteMatchesLocalFile(
+      remoteObjects: RemoteObjects,
+      localFile: LocalFile
+  ): UIO[Boolean] =
+    UIO(
+      remoteObjects.byKey
+        .get(localFile.remoteKey)
+        .exists(LocalFile.matchesHash(localFile)))
+
+  def remoteHasHash(
+      remoteObjects: RemoteObjects,
+      hashes: Map[HashType, MD5Hash]
+  ): UIO[Option[(RemoteKey, MD5Hash)]] =
+    UIO(remoteObjects.byHash.collectFirst {
+      case (hash, key) if (hashes.values.exists(h => h == hash)) => (key, hash)
+    })
+
 }

domain/src/main/scala/net/kemitix/thorp/domain/Sources.scala

@@ -2,7 +2,7 @@ package net.kemitix.thorp.domain
 
 import java.nio.file.Path
 
-import zio.{Task, ZIO}
+import zio.{UIO, ZIO}
 
 /**
   * The paths to synchronise with target.
@@ -14,13 +14,16 @@ import zio.{Task, ZIO}
   *
   * A path should only occur once in paths.
   */
-final case class Sources(
-    paths: List[Path]
-) {
+final case class Sources(paths: List[Path]) {
   def +(path: Path): Sources = this ++ List(path)
   def ++(otherPaths: List[Path]): Sources =
-    Sources(otherPaths.foldLeft(paths)((acc, path) =>
-      if (acc contains path) acc else acc ++ List(path)))
+    Sources(
+      otherPaths.foldLeft(paths)(
+        (acc, path) =>
+          if (acc contains path) acc
+          else acc ++ List(path)
+      )
+    )
 }
 
 object Sources {
@@ -29,8 +32,10 @@ object Sources {
   /**
     * Returns the source path for the given path.
     */
-  def forPath(path: Path)(sources: Sources): Task[Path] =
+  def forPath(path: Path)(sources: Sources): UIO[Path] =
     ZIO
       .fromOption(sources.paths.find(s => path.startsWith(s)))
-      .mapError(_ => new Exception("Path is not within any known source"))
+      .orDieWith { _ =>
+        new RuntimeException("Path is not within any known source")
+      }
 }

domain/src/main/scala/net/kemitix/thorp/domain/UploadEventListener.scala

@@ -10,8 +10,8 @@ object UploadEventListener {
   final case class Settings(
       localFile: LocalFile,
       index: Int,
-      syncTotals: SyncTotals,
-      totalBytesSoFar: Long
+      totalBytesSoFar: Long,
+      batchMode: Boolean
   )
 
   def listener(settings: Settings): UploadEvent => Unit = {
@@ -24,7 +24,6 @@ object UploadEventListener {
               RequestCycle(settings.localFile,
                            bytesTransferred.addAndGet(e.transferred),
                            settings.index,
-                           settings.syncTotals,
                            settings.totalBytesSoFar))
           case _ => ()
         }

domain/src/main/scala/net/kemitix/thorp/domain/UploadEventLogger.scala

@@ -10,14 +10,13 @@ object UploadEventLogger {
       localFile: LocalFile,
       bytesTransferred: Long,
       index: Int,
-      syncTotals: SyncTotals,
       totalBytesSoFar: Long
   )
 
   def apply(requestCycle: RequestCycle): Unit = {
     val remoteKey    = requestCycle.localFile.remoteKey.key
     val fileLength   = requestCycle.localFile.file.length
-    val statusHeight = 7
+    val statusHeight = 3
     if (requestCycle.bytesTransferred < fileLength)
       println(
         s"${GREEN}Uploading:$RESET $remoteKey$eraseToEndOfScreen\n" +
@@ -25,15 +24,6 @@ object UploadEventLogger {
                         SizeTranslation.sizeInEnglish,
                         requestCycle.bytesTransferred,
                         fileLength) +
-          statusWithBar("Files",
-                        l => l.toString,
-                        requestCycle.index,
-                        requestCycle.syncTotals.count) +
-          statusWithBar(
-            " Size",
-            SizeTranslation.sizeInEnglish,
-            requestCycle.bytesTransferred + requestCycle.totalBytesSoFar,
-            requestCycle.syncTotals.totalSizeBytes) +
           s"${Terminal.cursorPrevLine(statusHeight)}")
   }
 

domain/src/test/scala/net/kemitix/thorp/domain/RemoteKeyTest.scala

@@ -4,6 +4,7 @@ import java.io.File
 import java.nio.file.Paths
 
 import org.scalatest.FreeSpec
+import zio.DefaultRuntime
 
 class RemoteKeyTest extends FreeSpec {
 
@@ -67,6 +68,63 @@ class RemoteKeyTest extends FreeSpec {
         assertResult(expected)(result)
       }
     }
+    "fromSourcePath" - {
+      "when path in source" in {
+        val source   = Paths.get("/source")
+        val path     = source.resolve("/source/child")
+        val expected = RemoteKey("child")
+        val result   = RemoteKey.fromSourcePath(source, path)
+        assertResult(expected)(result)
+      }
+    }
+    "from source, prefix, file" - {
+      "when file in source" in {
+        val source   = Paths.get("/source")
+        val prefix   = RemoteKey("prefix")
+        val file     = new File("/source/dir/filename")
+        val expected = RemoteKey("prefix/dir/filename")
+        val program  = RemoteKey.from(source, prefix, file)
+        val result   = new DefaultRuntime {}.unsafeRunSync(program).toEither
+        assertResult(Right(expected))(result)
+      }
+    }
+  }
+  "asFile" - {
+    "remoteKey is empty" in {
+      val source    = Paths.get("/source")
+      val prefix    = RemoteKey("prefix")
+      val remoteKey = RemoteKey("")
+
+      val expected = None
+
+      val result = RemoteKey.asFile(source, prefix)(remoteKey)
+
+      assertResult(expected)(result)
+    }
+    "remoteKey is not empty" - {
+      "remoteKey is within prefix" in {
+        val source    = Paths.get("/source")
+        val prefix    = RemoteKey("prefix")
+        val remoteKey = RemoteKey("prefix/key")
+
+        val expected = Some(Paths.get("/source/key").toFile)
+
+        val result = RemoteKey.asFile(source, prefix)(remoteKey)
+
+        assertResult(expected)(result)
+      }
+      "remoteKey is outwith prefix" in {
+        val source    = Paths.get("/source")
+        val prefix    = RemoteKey("prefix")
+        val remoteKey = RemoteKey("elsewhere/key")
+
+        val expected = None
+
+        val result = RemoteKey.asFile(source, prefix)(remoteKey)
+
+        assertResult(expected)(result)
+      }
+    }
   }
 
 }

filesystem/src/main/scala/net/kemitix/thorp/filesystem/FileSystem.scala

@@ -4,7 +4,8 @@ import java.io.{File, FileInputStream}
 import java.nio.file.{Files, Path}
 import java.util.stream
 
-import zio.{Task, RIO, UIO, ZIO, ZManaged}
+import net.kemitix.thorp.domain.{RemoteKey, Sources}
+import zio._
 
 import scala.jdk.CollectionConverters._
 
@@ -13,18 +14,23 @@ trait FileSystem {
 }
 
 object FileSystem {
-
   trait Service {
-    def fileExists(file: File): ZIO[FileSystem, Throwable, Boolean]
+    def fileExists(file: File): ZIO[FileSystem, Nothing, Boolean]
     def openManagedFileInputStream(file: File, offset: Long)
       : RIO[FileSystem, ZManaged[Any, Throwable, FileInputStream]]
     def fileLines(file: File): RIO[FileSystem, Seq[String]]
+    def isDirectory(file: File): RIO[FileSystem, Boolean]
+    def listFiles(path: Path): RIO[FileSystem, Iterable[File]]
+    def length(file: File): ZIO[FileSystem, Nothing, Long]
+    def hasLocalFile(sources: Sources,
+                     prefix: RemoteKey,
+                     remoteKey: RemoteKey): ZIO[FileSystem, Nothing, Boolean]
   }
   trait Live extends FileSystem {
     override val filesystem: Service = new Service {
       override def fileExists(
           file: File
-      ): RIO[FileSystem, Boolean] = ZIO(file.exists)
+      ): ZIO[FileSystem, Nothing, Boolean] = UIO(file.exists)
 
       override def openManagedFileInputStream(file: File, offset: Long)
         : RIO[FileSystem, ZManaged[Any, Throwable, FileInputStream]] = {
@@ -48,18 +54,44 @@ object FileSystem {
           ZIO.effectTotal(lines.iterator.asScala.toList)
         acquire.bracketAuto(use)
       }
+
+      override def isDirectory(file: File): RIO[FileSystem, Boolean] =
+        Task(file.isDirectory)
+
+      override def listFiles(path: Path): RIO[FileSystem, Iterable[File]] =
+        Task(path.toFile.listFiles())
+
+      override def length(file: File): ZIO[FileSystem, Nothing, Long] =
+        UIO(file.length)
+
+      override def hasLocalFile(
+          sources: Sources,
+          prefix: RemoteKey,
+          remoteKey: RemoteKey): ZIO[FileSystem, Nothing, Boolean] = {
+        ZIO.foldLeft(sources.paths)(false) { (accExists, source) =>
+          RemoteKey
+            .asFile(source, prefix)(remoteKey)
+            .map(FileSystem.exists)
+            .getOrElse(UIO(false))
+            .map(_ || accExists)
+        }
+      }
     }
   }
   object Live extends Live
   trait Test extends FileSystem {
 
-    val fileExistsResultMap: Task[Map[Path, File]]
+    val fileExistsResultMap: UIO[Map[Path, File]]
     val fileLinesResult: Task[List[String]]
+    val isDirResult: Task[Boolean]
+    val listFilesResult: RIO[FileSystem, Iterable[File]]
+    val lengthResult: UIO[Long]
     val managedFileInputStream: Task[ZManaged[Any, Throwable, FileInputStream]]
+    val hasLocalFileResult: UIO[Boolean]
 
     override val filesystem: Service = new Service {
 
-      override def fileExists(file: File): RIO[FileSystem, Boolean] =
+      override def fileExists(file: File): ZIO[FileSystem, Nothing, Boolean] =
         fileExistsResultMap.map(m => m.keys.exists(_ equals file.toPath))
 
       override def openManagedFileInputStream(file: File, offset: Long)
@@ -68,10 +100,25 @@ object FileSystem {
 
       override def fileLines(file: File): RIO[FileSystem, List[String]] =
         fileLinesResult
+
+      override def isDirectory(file: File): RIO[FileSystem, Boolean] =
+        isDirResult
+
+      override def listFiles(path: Path): RIO[FileSystem, Iterable[File]] =
+        listFilesResult
+
+      override def length(file: File): UIO[Long] =
+        lengthResult
+
+      override def hasLocalFile(
+          sources: Sources,
+          prefix: RemoteKey,
+          remoteKey: RemoteKey): ZIO[FileSystem, Nothing, Boolean] =
+        hasLocalFileResult
     }
   }
 
-  final def exists(file: File): RIO[FileSystem, Boolean] =
+  final def exists(file: File): ZIO[FileSystem, Nothing, Boolean] =
     ZIO.accessM(_.filesystem fileExists file)
 
   final def openAtOffset(file: File, offset: Long)
@@ -84,4 +131,19 @@ object FileSystem {
 
   final def lines(file: File): RIO[FileSystem, Seq[String]] =
     ZIO.accessM(_.filesystem fileLines (file))
+
+  final def isDirectory(file: File): RIO[FileSystem, Boolean] =
+    ZIO.accessM(_.filesystem.isDirectory(file))
+
+  final def listFiles(path: Path): RIO[FileSystem, Iterable[File]] =
+    ZIO.accessM(_.filesystem.listFiles(path))
+
+  final def length(file: File): ZIO[FileSystem, Nothing, Long] =
+    ZIO.accessM(_.filesystem.length(file))
+
+  final def hasLocalFile(
+      sources: Sources,
+      prefix: RemoteKey,
+      remoteKey: RemoteKey): ZIO[FileSystem, Nothing, Boolean] =
+    ZIO.accessM(_.filesystem.hasLocalFile(sources, prefix, remoteKey))
 }

filesystem/src/main/scala/net/kemitix/thorp/filesystem/Hasher.scala

@@ -1,11 +1,10 @@
-package net.kemitix.thorp.core.hasher
+package net.kemitix.thorp.filesystem
 
 import java.nio.file.Path
 import java.util.concurrent.atomic.AtomicReference
 
 import net.kemitix.thorp.domain.HashType.MD5
 import net.kemitix.thorp.domain.{HashType, MD5Hash}
-import net.kemitix.thorp.filesystem.FileSystem
 import zio.{RIO, ZIO}
 
 /**

filesystem/src/main/scala/net/kemitix/thorp/filesystem/MD5HashGenerator.scala

@@ -1,12 +1,11 @@
-package net.kemitix.thorp.core.hasher
+package net.kemitix.thorp.filesystem
 
 import java.io.{File, FileInputStream}
 import java.nio.file.Path
 import java.security.MessageDigest
 
 import net.kemitix.thorp.domain.MD5Hash
-import net.kemitix.thorp.filesystem.FileSystem
-import zio.{Task, RIO}
+import zio.{RIO, Task}
 
 import scala.collection.immutable.NumericRange
 

filesystem/src/test/scala/net/kemitix/thorp/filesystem/FileSystemTest.scala

@@ -0,0 +1,42 @@
+package net.kemitix.thorp.filesystem
+
+import net.kemitix.thorp.domain.{RemoteKey, Sources, TemporaryFolder}
+import org.scalatest.FreeSpec
+import zio.DefaultRuntime
+
+class FileSystemTest extends FreeSpec with TemporaryFolder {
+
+  "Live" - {
+    "hasLocalFile" - {
+      "file exists" in {
+        withDirectory(dir => {
+          val filename = "filename"
+          createFile(dir, filename, contents = "")
+          val remoteKey = RemoteKey(filename)
+          val sources   = Sources(List(dir))
+          val prefix    = RemoteKey("")
+          val program   = FileSystem.hasLocalFile(sources, prefix, remoteKey)
+          val result = new DefaultRuntime {}
+            .unsafeRunSync(program.provide(FileSystem.Live))
+            .toEither
+          val expected = true
+          assertResult(Right(expected))(result)
+        })
+      }
+      "file does not exist" in {
+        withDirectory(dir => {
+          val filename  = "filename"
+          val remoteKey = RemoteKey(filename)
+          val sources   = Sources(List(dir))
+          val prefix    = RemoteKey("")
+          val program   = FileSystem.hasLocalFile(sources, prefix, remoteKey)
+          val result = new DefaultRuntime {}
+            .unsafeRunSync(program.provide(FileSystem.Live))
+            .toEither
+          val expected = false
+          assertResult(Right(expected))(result)
+        })
+      }
+    }
+  }
+}

filesystem/src/test/scala/net/kemitix/thorp/filesystem/MD5HashGeneratorTest.scala

@@ -1,11 +1,9 @@
-package net.kemitix.thorp.core.hasher
+package net.kemitix.thorp.filesystem
 
 import java.nio.file.Path
 
-import net.kemitix.thorp.config.Resource
 import net.kemitix.thorp.domain.MD5Hash
 import net.kemitix.thorp.domain.MD5HashData.{BigFile, Root}
-import net.kemitix.thorp.filesystem.FileSystem
 import org.scalatest.FunSpec
 import zio.DefaultRuntime
 

filesystem/src/test/scala/net/kemitix/thorp/filesystem/Resource.scala

@@ -1,4 +1,4 @@
-package net.kemitix.thorp.config
+package net.kemitix.thorp.filesystem
 
 import java.io.File
 

lib/src/main/scala/net/kemitix/thorp/lib/ActionGenerator.scala

@@ -1,7 +1,7 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import net.kemitix.thorp.config.Config
-import net.kemitix.thorp.core.Action.{DoNothing, ToCopy, ToUpload}
+import net.kemitix.thorp.domain.Action.{DoNothing, ToCopy, ToUpload}
 import net.kemitix.thorp.domain.Implicits._
 import net.kemitix.thorp.domain._
 import zio.RIO
@@ -79,7 +79,7 @@ object ActionGenerator {
   private def copyFile(
       bucket: Bucket,
       localFile: LocalFile,
-      remoteMetaData: Set[RemoteMetaData]
+      remoteMetaData: Option[RemoteMetaData]
   ) =
     LazyList
       .from(remoteMetaData)

lib/src/main/scala/net/kemitix/thorp/lib/CoreTypes.scala

@@ -0,0 +1,21 @@
+package net.kemitix.thorp.lib
+
+import net.kemitix.thorp.config.Config
+import net.kemitix.thorp.console.Console
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher}
+import net.kemitix.thorp.storage.Storage
+import zio.ZIO
+import zio.clock.Clock
+
+object CoreTypes {
+
+  type CoreEnv = Storage
+    with Console
+    with Config
+    with Clock
+    with FileSystem
+    with Hasher
+    with FileScanner
+  type CoreProgram[A] = ZIO[CoreEnv, Throwable, A]
+
+}

lib/src/main/scala/net/kemitix/thorp/lib/EventQueue.scala

@@ -1,4 +1,4 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import net.kemitix.thorp.domain.StorageQueueEvent
 

lib/src/main/scala/net/kemitix/thorp/lib/FileScanner.scala

@@ -0,0 +1,88 @@
+package net.kemitix.thorp.lib
+
+import java.io.File
+import java.nio.file.Path
+
+import net.kemitix.eip.zio.MessageChannel.{EChannel, ESender}
+import net.kemitix.eip.zio.{Message, MessageChannel}
+import net.kemitix.thorp.config.Config
+import net.kemitix.thorp.domain.{
+  Filter,
+  HashType,
+  LocalFile,
+  MD5Hash,
+  RemoteKey,
+  Sources
+}
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher}
+import zio.clock.Clock
+import zio.{RIO, UIO, ZIO}
+
+trait FileScanner {
+  val fileScanner: FileScanner.Service
+}
+
+object FileScanner {
+
+  type RemoteHashes = Map[MD5Hash, RemoteKey]
+  type Hashes       = Map[HashType, MD5Hash]
+  type ScannedFile  = LocalFile
+  type FileSender = ESender[Clock with Hasher with FileSystem with Config,
+                            Throwable,
+                            ScannedFile]
+  type ScannerChannel = EChannel[Any, Throwable, ScannedFile]
+
+  trait Service {
+    def scanSources: RIO[FileScanner, FileSender]
+  }
+
+  trait Live extends FileScanner {
+    val fileScanner: Service = new Service {
+
+      override def scanSources: RIO[FileScanner, FileSender] =
+        RIO { channel =>
+          (for {
+            sources <- Config.sources
+            _       <- ZIO.foreach(sources.paths)(scanPath(channel)(_))
+          } yield ()) <* MessageChannel.endChannel(channel)
+        }
+
+      private def scanPath(channel: ScannerChannel)(path: Path)
+        : ZIO[Clock with Config with Hasher with FileSystem, Throwable, Unit] =
+        for {
+          filters <- Config.filters
+          files   <- FileSystem.listFiles(path)
+          _       <- ZIO.foreach(files)(handleFile(channel, filters))
+        } yield ()
+
+      private def handleFile(
+          channel: ScannerChannel,
+          filters: List[Filter]
+      )(file: File) =
+        for {
+          isDir      <- FileSystem.isDirectory(file)
+          isIncluded <- UIO(Filters.isIncluded(file.toPath)(filters))
+          _          <- ZIO.when(isIncluded && isDir)(scanPath(channel)(file.toPath))
+          _          <- ZIO.when(isIncluded && !isDir)(sendHashedFile(channel)(file))
+        } yield ()
+
+      private def sendHashedFile(channel: ScannerChannel)(file: File) =
+        for {
+          sources   <- Config.sources
+          source    <- Sources.forPath(file.toPath)(sources)
+          prefix    <- Config.prefix
+          hashes    <- Hasher.hashObject(file.toPath)
+          remoteKey <- RemoteKey.from(source, prefix, file)
+          size      <- FileSystem.length(file)
+          localFile <- ZIO(
+            LocalFile(file, source.toFile, hashes, remoteKey, size))
+          hashedFile <- Message.create(localFile)
+          _          <- MessageChannel.send(channel)(hashedFile)
+        } yield ()
+    }
+
+  }
+  object Live extends Live
+  final def scanSources: RIO[FileScanner, FileSender] =
+    ZIO.accessM(_.fileScanner.scanSources)
+}

lib/src/main/scala/net/kemitix/thorp/lib/Filters.scala

@@ -1,4 +1,4 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.nio.file.Path
 

lib/src/main/scala/net/kemitix/thorp/lib/KeyGenerator.scala

@@ -1,4 +1,4 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.nio.file.Path
 

lib/src/main/scala/net/kemitix/thorp/lib/LocalFileStream.scala

@@ -1,13 +1,12 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.io.File
 import java.nio.file.Path
 
 import net.kemitix.thorp.config.Config
-import net.kemitix.thorp.core.hasher.Hasher
 import net.kemitix.thorp.domain.Sources
-import net.kemitix.thorp.filesystem.FileSystem
-import zio.{Task, RIO, ZIO}
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher}
+import zio.{RIO, Task, ZIO}
 
 object LocalFileStream {
 

lib/src/main/scala/net/kemitix/thorp/lib/LocalFileSystem.scala

@@ -0,0 +1,256 @@
+package net.kemitix.thorp.lib
+
+import net.kemitix.eip.zio.MessageChannel.UChannel
+import net.kemitix.eip.zio.{Message, MessageChannel}
+import net.kemitix.thorp.config.Config
+import net.kemitix.thorp.domain.Action.{DoNothing, ToCopy, ToDelete, ToUpload}
+import net.kemitix.thorp.domain.RemoteObjects.{
+  remoteHasHash,
+  remoteKeyExists,
+  remoteMatchesLocalFile
+}
+import net.kemitix.thorp.domain._
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher}
+import net.kemitix.thorp.lib.FileScanner.Hashes
+import net.kemitix.thorp.storage.Storage
+import net.kemitix.throp.uishell.UIEvent
+import zio._
+import zio.clock.Clock
+
+trait LocalFileSystem {
+
+  def scanCopyUpload(
+      uiChannel: UChannel[Any, UIEvent],
+      remoteObjects: RemoteObjects,
+      archive: ThorpArchive
+  ): RIO[
+    Clock with Config with Hasher with FileSystem with FileScanner with Storage,
+    Seq[StorageQueueEvent]]
+
+  def scanDelete(
+      uiChannel: UChannel[Any, UIEvent],
+      remoteData: RemoteObjects,
+      archive: UnversionedMirrorArchive.type
+  ): RIO[Clock with Config with FileSystem with Storage, Seq[StorageQueueEvent]]
+
+}
+object LocalFileSystem extends LocalFileSystem {
+
+  override def scanCopyUpload(
+      uiChannel: UChannel[Any, UIEvent],
+      remoteObjects: RemoteObjects,
+      archive: ThorpArchive
+  ): RIO[
+    Clock with Hasher with FileSystem with Config with FileScanner with Storage,
+    Seq[StorageQueueEvent]] =
+    for {
+      actionCounter <- Ref.make(0)
+      bytesCounter  <- Ref.make(0L)
+      uploads       <- Ref.make(Map.empty[MD5Hash, Promise[Throwable, RemoteKey]])
+      eventsRef     <- Ref.make(List.empty[StorageQueueEvent])
+      fileSender    <- FileScanner.scanSources
+      fileReceiver <- fileReceiver(uiChannel,
+                                   remoteObjects,
+                                   archive,
+                                   uploads,
+                                   actionCounter,
+                                   bytesCounter,
+                                   eventsRef)
+      _      <- MessageChannel.pointToPoint(fileSender)(fileReceiver).runDrain
+      events <- eventsRef.get
+    } yield events
+
+  override def scanDelete(
+      uiChannel: UChannel[Any, UIEvent],
+      remoteData: RemoteObjects,
+      archive: UnversionedMirrorArchive.type
+  ): RIO[Clock with Config with FileSystem with Storage,
+         Seq[StorageQueueEvent]] =
+    for {
+      actionCounter <- Ref.make(0)
+      bytesCounter  <- Ref.make(0L)
+      eventsRef     <- Ref.make(List.empty[StorageQueueEvent])
+      keySender     <- keySender(remoteData.byKey.keys)
+      keyReceiver <- keyReceiver(uiChannel,
+                                 archive,
+                                 actionCounter,
+                                 bytesCounter,
+                                 eventsRef)
+      _      <- MessageChannel.pointToPoint(keySender)(keyReceiver).runDrain
+      events <- eventsRef.get
+    } yield events
+
+  private def fileReceiver(
+      uiChannel: UChannel[Any, UIEvent],
+      remoteObjects: RemoteObjects,
+      archive: ThorpArchive,
+      uploads: Ref[Map[MD5Hash, Promise[Throwable, RemoteKey]]],
+      actionCounterRef: Ref[Int],
+      bytesCounterRef: Ref[Long],
+      eventsRef: Ref[List[StorageQueueEvent]]
+  ): UIO[MessageChannel.UReceiver[Clock with Config with Storage,
+                                  FileScanner.ScannedFile]] =
+    UIO { message =>
+      val localFile = message.body
+      for {
+        _                   <- uiFileFound(uiChannel)(localFile)
+        action              <- chooseAction(remoteObjects, uploads, uiChannel)(localFile)
+        actionCounter       <- actionCounterRef.update(_ + 1)
+        bytesCounter        <- bytesCounterRef.update(_ + action.size)
+        actionChosenMessage <- Message.create(UIEvent.ActionChosen(action))
+        _                   <- MessageChannel.send(uiChannel)(actionChosenMessage)
+        sequencedAction = SequencedAction(action, actionCounter)
+        event <- archive.update(sequencedAction, bytesCounter)
+        _     <- eventsRef.update(list => event :: list)
+        _     <- uiActionFinished(uiChannel)(action, actionCounter, bytesCounter)
+      } yield ()
+    }
+  private def uiActionFinished(uiChannel: UChannel[Any, UIEvent])(
+      action: Action,
+      actionCounter: Int,
+      bytesCounter: Long
+  ) =
+    Message.create(UIEvent.ActionFinished(action, actionCounter, bytesCounter)) >>=
+      MessageChannel.send(uiChannel)
+
+  private def uiFileFound(uiChannel: UChannel[Any, UIEvent])(
+      localFile: LocalFile) =
+    Message.create(UIEvent.FileFound(localFile)) >>=
+      MessageChannel.send(uiChannel)
+
+  private def chooseAction(
+      remoteObjects: RemoteObjects,
+      uploads: Ref[Map[MD5Hash, Promise[Throwable, RemoteKey]]],
+      uiChannel: UChannel[Any, UIEvent],
+  )(localFile: LocalFile): ZIO[Config with Clock, Nothing, Action] = {
+    for {
+      remoteExists  <- remoteKeyExists(remoteObjects, localFile.remoteKey)
+      remoteMatches <- remoteMatchesLocalFile(remoteObjects, localFile)
+      remoteForHash <- remoteHasHash(remoteObjects, localFile.hashes)
+      previous      <- uploads.get
+      bucket        <- Config.bucket
+      action <- if (remoteExists && remoteMatches)
+        doNothing(localFile, bucket)
+      else {
+        remoteForHash match {
+          case Some((sourceKey, hash)) =>
+            doCopy(localFile, bucket, sourceKey, hash)
+          case _ if (matchesPreviousUpload(previous, localFile.hashes)) =>
+            doCopyWithPreviousUpload(localFile, bucket, previous, uiChannel)
+          case _ =>
+            doUpload(localFile, bucket)
+        }
+      }
+    } yield action
+  }
+
+  private def matchesPreviousUpload(
+      previous: Map[MD5Hash, Promise[Throwable, RemoteKey]],
+      hashes: Hashes
+  ): Boolean =
+    hashes.exists({
+      case (_, hash) => previous.contains(hash)
+    })
+
+  private def doNothing(
+      localFile: LocalFile,
+      bucket: Bucket
+  ): UIO[Action] = UIO {
+    DoNothing(bucket, localFile.remoteKey, localFile.length)
+  }
+
+  private def doCopy(
+      localFile: LocalFile,
+      bucket: Bucket,
+      sourceKey: RemoteKey,
+      hash: MD5Hash
+  ): UIO[Action] = UIO {
+    ToCopy(bucket, sourceKey, hash, localFile.remoteKey, localFile.length)
+  }
+
+  private def doCopyWithPreviousUpload(
+      localFile: LocalFile,
+      bucket: Bucket,
+      previous: Map[MD5Hash, Promise[Throwable, RemoteKey]],
+      uiChannel: UChannel[Any, UIEvent],
+  ): ZIO[Clock, Nothing, Action] = {
+    localFile.hashes
+      .find({ case (_, hash) => previous.contains(hash) })
+      .map({
+        case (_, hash) =>
+          for {
+            awaitingMessage <- Message.create(
+              UIEvent.AwaitingAnotherUpload(localFile.remoteKey, hash))
+            _ <- MessageChannel.send(uiChannel)(awaitingMessage)
+            action <- previous(hash).await.map(
+              remoteKey =>
+                ToCopy(bucket,
+                       remoteKey,
+                       hash,
+                       localFile.remoteKey,
+                       localFile.length))
+            waitFinishedMessage <- Message.create(
+              UIEvent.AnotherUploadWaitComplete(action))
+            _ <- MessageChannel.send(uiChannel)(waitFinishedMessage)
+          } yield action
+      })
+      .getOrElse(doUpload(localFile, bucket))
+      .refineToOrDie[Nothing]
+  }
+
+  private def doUpload(
+      localFile: LocalFile,
+      bucket: Bucket
+  ): UIO[Action] = {
+    UIO(ToUpload(bucket, localFile, localFile.length))
+  }
+
+  def keySender(
+      keys: Iterable[RemoteKey]): UIO[MessageChannel.Sender[Clock, RemoteKey]] =
+    UIO { channel =>
+      ZIO.foreach(keys) { key =>
+        Message.create(key) >>= MessageChannel.send(channel)
+      } *> MessageChannel.endChannel(channel)
+    }
+
+  def keyReceiver(
+      uiChannel: UChannel[Any, UIEvent],
+      archive: ThorpArchive,
+      actionCounterRef: Ref[Int],
+      bytesCounterRef: Ref[Long],
+      eventsRef: Ref[List[StorageQueueEvent]]
+  ): UIO[
+    MessageChannel.UReceiver[Clock with Config with FileSystem with Storage,
+                             RemoteKey]] =
+    UIO { message =>
+      {
+        val remoteKey = message.body
+        for {
+          _       <- uiKeyFound(uiChannel)(remoteKey)
+          sources <- Config.sources
+          prefix  <- Config.prefix
+          exists  <- FileSystem.hasLocalFile(sources, prefix, remoteKey)
+          _ <- ZIO.when(!exists) {
+            for {
+              actionCounter <- actionCounterRef.update(_ + 1)
+              bucket        <- Config.bucket
+              action = ToDelete(bucket, remoteKey, 0L)
+              bytesCounter <- bytesCounterRef.update(_ + action.size)
+              sequencedAction = SequencedAction(action, actionCounter)
+              event <- archive.update(sequencedAction, 0L)
+              _     <- eventsRef.update(list => event :: list)
+              _ <- uiActionFinished(uiChannel)(action,
+                                               actionCounter,
+                                               bytesCounter)
+            } yield ()
+          }
+        } yield ()
+      }
+    }
+
+  private def uiKeyFound(uiChannel: UChannel[Any, UIEvent])(
+      remoteKey: RemoteKey) =
+    Message.create(UIEvent.KeyFound(remoteKey)) >>=
+      MessageChannel.send(uiChannel)
+
+}

lib/src/main/scala/net/kemitix/thorp/lib/LocalFileValidator.scala

@@ -1,4 +1,4 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.io.File
 import java.nio.file.Path
@@ -24,7 +24,7 @@ object LocalFileValidator {
     for {
       file      <- validateFile(path.toFile)
       remoteKey <- validateRemoteKey(sources, prefix, path)
-    } yield LocalFile(file, source, hash, remoteKey)
+    } yield LocalFile(file, source, hash, remoteKey, file.length)
 
   private def validateFile(file: File): IO[Violation, File] =
     if (file.isDirectory)

lib/src/main/scala/net/kemitix/thorp/lib/LocalFiles.scala

@@ -1,4 +1,4 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import net.kemitix.thorp.domain.LocalFile
 

lib/src/main/scala/net/kemitix/thorp/lib/PlanBuilder.scala

@@ -1,35 +1,24 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import net.kemitix.thorp.config.Config
 import net.kemitix.thorp.console._
-import net.kemitix.thorp.core.Action._
-import net.kemitix.thorp.core.hasher.Hasher
+import net.kemitix.thorp.domain.Action._
 import net.kemitix.thorp.domain._
-import net.kemitix.thorp.filesystem.FileSystem
-import net.kemitix.thorp.storage.api.Storage
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher}
+import net.kemitix.thorp.storage.Storage
 import zio.{RIO, ZIO}
 
 object PlanBuilder {
 
-  def createPlan
+  def createPlan(remoteObjects: RemoteObjects)
     : RIO[Storage with Console with Config with FileSystem with Hasher,
-          SyncPlan] = (fetchRemoteData <&> findLocalFiles) >>= assemblePlan
+          SyncPlan] = findLocalFiles >>= assemblePlan(remoteObjects)
 
-  private def fetchRemoteData =
-    for {
-      bucket  <- Config.bucket
-      prefix  <- Config.prefix
-      objects <- Storage.list(bucket, prefix)
-      _       <- Console.putStrLn(s"Found ${objects.byKey.size} remote objects")
-    } yield objects
-
-  private def assemblePlan(metadata: (RemoteObjects, LocalFiles)) =
-    metadata match {
-      case (remoteObjects, localData) =>
+  private def assemblePlan(remoteObjects: RemoteObjects)(
+      localData: LocalFiles) =
     createActions(remoteObjects, localData.localFiles)
       .map(_.filter(doesSomething).sortBy(SequencePlan.order))
       .map(syncPlan(localData))
-    }
 
   private def syncPlan(localData: LocalFiles): LazyList[Action] => SyncPlan =
     SyncPlan.create(_, syncTotal(localData))

lib/src/main/scala/net/kemitix/thorp/lib/PlanExecutor.scala

@@ -1,9 +1,9 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import net.kemitix.thorp.config.Config
 import net.kemitix.thorp.console.Console
-import net.kemitix.thorp.domain.StorageQueueEvent
-import net.kemitix.thorp.storage.api.Storage
+import net.kemitix.thorp.domain.{Action, StorageQueueEvent}
+import net.kemitix.thorp.storage.Storage
 import zio.{Ref, ZIO}
 
 trait PlanExecutor {

lib/src/main/scala/net/kemitix/thorp/lib/Remote.scala

@@ -1,4 +1,4 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.nio.file.Path
 

lib/src/main/scala/net/kemitix/thorp/lib/S3MetaDataEnricher.scala

@@ -0,0 +1,50 @@
+package net.kemitix.thorp.lib
+
+import net.kemitix.thorp.domain._
+
+object S3MetaDataEnricher {
+
+  def getMetadata(
+      localFile: LocalFile,
+      remoteObjects: RemoteObjects
+  ): MatchedMetadata = {
+    val (keyMatches, hashMatches) = getS3Status(localFile, remoteObjects)
+
+    val maybeByKey: Option[RemoteMetaData] = keyMatches.map { hash =>
+      RemoteMetaData(localFile.remoteKey, hash)
+    }
+
+    val maybeByHash: Option[RemoteMetaData] = hashMatches.map {
+      case (md5Hash, remoteKey) =>
+        RemoteMetaData(remoteKey, md5Hash)
+    }.headOption
+
+    MatchedMetadata(
+      localFile,
+      matchByKey = maybeByKey,
+      matchByHash = maybeByHash
+    )
+  }
+
+  def getS3Status(
+      localFile: LocalFile,
+      remoteObjects: RemoteObjects
+  ): (Option[MD5Hash], Map[MD5Hash, RemoteKey]) = {
+    val byKey: Option[MD5Hash] =
+      remoteObjects.byKey.get(localFile.remoteKey)
+    val hashes: Map[HashType, MD5Hash] = localFile.hashes
+    val byHash: Map[MD5Hash, RemoteKey] =
+      hashes
+        .map {
+          case (hashType, md5Hash) =>
+            (md5Hash, remoteObjects.byHash.get(md5Hash))
+        }
+        .flatMap {
+          case (md5Hash, Some(maybeyKey)) => Some((md5Hash, maybeyKey))
+          case (_, None)                  => None
+        }
+
+    (byKey, byHash)
+  }
+
+}

lib/src/main/scala/net/kemitix/thorp/lib/SequencePlan.scala

@@ -1,6 +1,7 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
-import net.kemitix.thorp.core.Action.{DoNothing, ToCopy, ToDelete, ToUpload}
+import net.kemitix.thorp.domain.Action
+import net.kemitix.thorp.domain.Action.{DoNothing, ToCopy, ToDelete, ToUpload}
 
 trait SequencePlan {
 

lib/src/main/scala/net/kemitix/thorp/lib/SequencedAction.scala

@@ -1,4 +1,6 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
+
+import net.kemitix.thorp.domain.Action
 
 final case class SequencedAction(
     action: Action,

lib/src/main/scala/net/kemitix/thorp/lib/SyncLogging.scala

@@ -0,0 +1,18 @@
+package net.kemitix.thorp.lib
+
+import net.kemitix.thorp.config.Config
+import net.kemitix.thorp.console._
+import zio.ZIO
+
+trait SyncLogging {
+
+  def logFileScan: ZIO[Config with Console, Nothing, Unit] =
+    for {
+      sources <- Config.sources
+      _ <- Console.putStrLn(
+        s"Scanning local files: ${sources.paths.mkString(", ")}...")
+    } yield ()
+
+}
+
+object SyncLogging extends SyncLogging

lib/src/main/scala/net/kemitix/thorp/lib/SyncPlan.scala

@@ -1,6 +1,6 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
-import net.kemitix.thorp.domain.SyncTotals
+import net.kemitix.thorp.domain.{Action, SyncTotals}
 
 final case class SyncPlan private (
     actions: LazyList[Action],

lib/src/main/scala/net/kemitix/thorp/lib/ThorpArchive.scala

@@ -0,0 +1,47 @@
+package net.kemitix.thorp.lib
+
+import net.kemitix.thorp.config.Config
+import net.kemitix.thorp.console.ConsoleOut.{
+  CopyComplete,
+  DeleteComplete,
+  ErrorQueueEventOccurred,
+  UploadComplete
+}
+import net.kemitix.thorp.console._
+import net.kemitix.thorp.domain.StorageQueueEvent
+import net.kemitix.thorp.domain.StorageQueueEvent._
+import net.kemitix.thorp.storage.Storage
+import zio.{RIO, ZIO}
+
+trait ThorpArchive {
+
+  def update(
+      sequencedAction: SequencedAction,
+      totalBytesSoFar: Long
+  ): ZIO[Storage with Config, Nothing, StorageQueueEvent]
+
+  def logEvent(
+      event: StorageQueueEvent): RIO[Console with Config, StorageQueueEvent] =
+    for {
+      batchMode <- Config.batchMode
+      sqe <- event match {
+        case UploadQueueEvent(remoteKey, _) =>
+          ZIO(event) <* Console.putMessageLnB(UploadComplete(remoteKey),
+                                              batchMode)
+        case CopyQueueEvent(sourceKey, targetKey) =>
+          ZIO(event) <* Console.putMessageLnB(
+            CopyComplete(sourceKey, targetKey),
+            batchMode)
+        case DeleteQueueEvent(remoteKey) =>
+          ZIO(event) <* Console.putMessageLnB(DeleteComplete(remoteKey),
+                                              batchMode)
+        case ErrorQueueEvent(action, _, e) =>
+          ZIO(event) <* Console.putMessageLnB(
+            ErrorQueueEventOccurred(action, e),
+            batchMode)
+        case DoNothingQueueEvent(_) => ZIO(event)
+        case ShutdownQueueEvent()   => ZIO(event)
+      }
+    } yield sqe
+
+}

lib/src/main/scala/net/kemitix/thorp/lib/UnversionedMirrorArchive.scala

@@ -0,0 +1,48 @@
+package net.kemitix.thorp.lib
+
+import net.kemitix.thorp.config.Config
+import net.kemitix.thorp.domain.Action.{DoNothing, ToCopy, ToDelete, ToUpload}
+import net.kemitix.thorp.domain.StorageQueueEvent.DoNothingQueueEvent
+import net.kemitix.thorp.domain._
+import net.kemitix.thorp.storage.Storage
+import zio.{UIO, ZIO}
+
+trait UnversionedMirrorArchive extends ThorpArchive {
+
+  override def update(
+      sequencedAction: SequencedAction,
+      totalBytesSoFar: Long
+  ): ZIO[Storage with Config, Nothing, StorageQueueEvent] =
+    sequencedAction match {
+      case SequencedAction(ToUpload(bucket, localFile, _), index) =>
+        doUpload(index, totalBytesSoFar, bucket, localFile)
+      case SequencedAction(ToCopy(bucket, sourceKey, hash, targetKey, _), _) =>
+        Storage.copy(bucket, sourceKey, hash, targetKey)
+      case SequencedAction(ToDelete(bucket, remoteKey, _), _) =>
+        Storage.delete(bucket, remoteKey)
+      case SequencedAction(DoNothing(_, remoteKey, _), _) =>
+        UIO(DoNothingQueueEvent(remoteKey))
+    }
+
+  private def doUpload(
+      index: Int,
+      totalBytesSoFar: Long,
+      bucket: Bucket,
+      localFile: LocalFile
+  ) =
+    for {
+      batchMode <- Config.batchMode
+      upload <- Storage.upload(
+        localFile,
+        bucket,
+        UploadEventListener.Settings(
+          localFile,
+          index,
+          totalBytesSoFar,
+          batchMode
+        )
+      )
+    } yield upload
+}
+
+object UnversionedMirrorArchive extends UnversionedMirrorArchive

lib/src/test/resources/net/kemitix/thorp/lib/upload/root-file

@@ -0,0 +1 @@
+This file is in the root directory of the upload tree.

lib/src/test/scala/net/kemitix/thorp/lib/ActionGeneratorSuite.scala

@@ -1,10 +1,10 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import net.kemitix.thorp.config._
-import net.kemitix.thorp.core.Action.{DoNothing, ToCopy, ToUpload}
+import net.kemitix.thorp.domain.Action.{DoNothing, ToCopy, ToUpload}
 import net.kemitix.thorp.domain.HashType.MD5
 import net.kemitix.thorp.domain._
-import net.kemitix.thorp.filesystem.FileSystem
+import net.kemitix.thorp.filesystem.{FileSystem, Resource}
 import org.scalatest.FunSpec
 import zio.DefaultRuntime
 
@@ -38,7 +38,7 @@ class ActionGeneratorSuite extends FunSpec {
         theRemoteMetadata = RemoteMetaData(theFile.remoteKey, theHash)
         input = MatchedMetadata(
           theFile, // local exists
-          matchByHash = Set(theRemoteMetadata), // remote matches
+          matchByHash = Some(theRemoteMetadata), // remote matches
           matchByKey = Some(theRemoteMetadata) // remote exists
         )
       } yield (theFile, input)
@@ -67,7 +67,7 @@ class ActionGeneratorSuite extends FunSpec {
         otherRemoteMetadata = RemoteMetaData(otherRemoteKey, theHash)
         input = MatchedMetadata(
           theFile, // local exists
-          matchByHash = Set(otherRemoteMetadata), // other matches
+          matchByHash = Some(otherRemoteMetadata), // other matches
           matchByKey = None) // remote is missing
       } yield (theFile, theRemoteKey, input, otherRemoteKey)
       it("copy from other key") {
@@ -94,7 +94,7 @@ class ActionGeneratorSuite extends FunSpec {
                                                 sources,
                                                 prefix)
           input = MatchedMetadata(theFile, // local exists
-                                  matchByHash = Set.empty, // other no matches
+                                  matchByHash = None, // other no matches
                                   matchByKey = None) // remote is missing
         } yield (theFile, input)
         it("upload") {
@@ -127,7 +127,7 @@ class ActionGeneratorSuite extends FunSpec {
         )
         input = MatchedMetadata(
           theFile, // local exists
-          matchByHash = Set(otherRemoteMetadata), // other matches
+          matchByHash = Some(otherRemoteMetadata), // other matches
           matchByKey = Some(oldRemoteMetadata)) // remote exists
       } yield (theFile, theRemoteKey, input, otherRemoteKey)
       it("copy from other key") {
@@ -160,7 +160,7 @@ class ActionGeneratorSuite extends FunSpec {
         theRemoteMetadata = RemoteMetaData(theRemoteKey, oldHash)
         input = MatchedMetadata(
           theFile, // local exists
-          matchByHash = Set.empty, // remote no match, other no match
+          matchByHash = None, // remote no match, other no match
           matchByKey = Some(theRemoteMetadata) // remote exists
         )
       } yield (theFile, input)

lib/src/test/scala/net/kemitix/thorp/lib/DummyStorageService.scala

@@ -1,10 +1,9 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.io.File
 
-import net.kemitix.thorp.console._
 import net.kemitix.thorp.domain._
-import net.kemitix.thorp.storage.api.Storage
+import net.kemitix.thorp.storage.Storage
 import zio.{RIO, UIO}
 
 final case class DummyStorageService(
@@ -18,7 +17,7 @@ final case class DummyStorageService(
   override def listObjects(
       bucket: Bucket,
       prefix: RemoteKey
-  ): RIO[Console, RemoteObjects] =
+  ): RIO[Storage, RemoteObjects] =
     RIO(remoteObjects)
 
   override def upload(

lib/src/test/scala/net/kemitix/thorp/lib/EIPTest.scala

@@ -0,0 +1,50 @@
+package net.kemitix.thorp.lib
+
+import org.scalatest.FreeSpec
+import zio.stream._
+import zio.{DefaultRuntime, IO, UIO, ZIO}
+
+// Experiment on how to trigger events asynchronously
+// i.e. Have one thread add to a queue and another take from the queue, neither waiting for the other thread to finish
+class EIPTest extends FreeSpec {
+
+  "queue" in {
+    type Callback[A] = IO[Option[Throwable], A] => Unit
+    def offerInt(cb: Callback[Int], i: Int) = ZIO(cb(IO.succeed(i)))
+    def closeStream(cb: Callback[Int])      = ZIO(cb(IO.fail(None)))
+    def publish: Callback[Int] => IO[Throwable, _] =
+      cb =>
+        ZIO.foreach(1 to 3) { i =>
+          ZIO {
+            println(s"put $i")
+            Thread.sleep(100)
+          } *> offerInt(cb, i)
+        } *> closeStream(cb)
+    val program = Stream
+      .effectAsyncM(publish)
+      .mapM(i => ZIO(println(s"get $i")))
+
+    new DefaultRuntime {}.unsafeRunSync(program.runDrain)
+  }
+
+  "EIP: Message Channel" in {
+    type Message  = Int
+    type Callback = IO[Option[Throwable], Message] => Unit
+    def producer: Callback => UIO[Unit] =
+      cb =>
+        ZIO.foreach(1 to 3)(message =>
+          UIO {
+            println(s"put $message")
+            cb(ZIO.succeed(message))
+            Thread.sleep(100)
+        }) *> UIO(cb(ZIO.fail(None)))
+    def consumer: Message => ZIO[Any, Throwable, Unit] =
+      message => ZIO(println(s"got $message"))
+    val program = zio.stream.Stream
+      .effectAsyncM(producer)
+      .buffer(1)
+      .mapM(consumer)
+    new DefaultRuntime {}.unsafeRunSync(program.runDrain)
+  }
+
+}

lib/src/test/scala/net/kemitix/thorp/lib/FiltersSuite.scala

@@ -1,4 +1,4 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.nio.file.Paths
 

lib/src/test/scala/net/kemitix/thorp/lib/KeyGeneratorSuite.scala

@@ -1,10 +1,10 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.io.File
 import java.nio.file.Path
 
-import net.kemitix.thorp.config.Resource
 import net.kemitix.thorp.domain.{RemoteKey, Sources}
+import net.kemitix.thorp.filesystem.Resource
 import org.scalatest.FunSpec
 import zio.DefaultRuntime
 

lib/src/test/scala/net/kemitix/thorp/lib/LocalFileStreamSuite.scala

@@ -1,4 +1,4 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.nio.file.Paths
 
@@ -6,15 +6,13 @@ import net.kemitix.thorp.config.{
   Config,
   ConfigOption,
   ConfigOptions,
-  ConfigurationBuilder,
-  Resource
+  ConfigurationBuilder
 }
 import net.kemitix.thorp.console._
-import net.kemitix.thorp.core.hasher.Hasher
 import net.kemitix.thorp.domain.HashType.MD5
 import net.kemitix.thorp.domain._
-import net.kemitix.thorp.filesystem.FileSystem
-import net.kemitix.thorp.storage.api.Storage
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher, Resource}
+import net.kemitix.thorp.storage.Storage
 import org.scalatest.FunSpec
 import zio.{DefaultRuntime, Task, UIO}
 

lib/src/test/scala/net/kemitix/thorp/lib/MatchedMetadataEnricherSuite.scala

@@ -1,9 +1,9 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
-import net.kemitix.thorp.config.Resource
-import net.kemitix.thorp.core.S3MetaDataEnricher.{getMetadata, getS3Status}
+import net.kemitix.thorp.lib.S3MetaDataEnricher.{getMetadata, getS3Status}
 import net.kemitix.thorp.domain.HashType.MD5
 import net.kemitix.thorp.domain._
+import net.kemitix.thorp.filesystem.Resource
 import org.scalatest.FunSpec
 
 import scala.collection.MapView
@@ -15,17 +15,11 @@ class MatchedMetadataEnricherSuite extends FunSpec {
   private val prefix     = RemoteKey("prefix")
 
   def getMatchesByKey(
-      status: (Option[MD5Hash], Set[(RemoteKey, MD5Hash)])): Option[MD5Hash] = {
+      status: (Option[MD5Hash], Map[MD5Hash, RemoteKey])): Option[MD5Hash] = {
     val (byKey, _) = status
     byKey
   }
 
-  def getMatchesByHash(status: (Option[MD5Hash], Set[(RemoteKey, MD5Hash)]))
-    : Set[(RemoteKey, MD5Hash)] = {
-    val (_, byHash) = status
-    byHash
-  }
-
   describe("enrich with metadata") {
 
     describe(
@@ -39,7 +33,7 @@ class MatchedMetadataEnricherSuite extends FunSpec {
                                               prefix)
         theRemoteKey = theFile.remoteKey
         remoteObjects = RemoteObjects(
-          byHash = MapView(theHash     -> Set(theRemoteKey)),
+          byHash = MapView(theHash     -> theRemoteKey),
           byKey = MapView(theRemoteKey -> theHash)
         )
         theRemoteMetadata = RemoteMetaData(theRemoteKey, theHash)
@@ -47,8 +41,9 @@ class MatchedMetadataEnricherSuite extends FunSpec {
       it("generates valid metadata") {
         env.map({
           case (theFile, theRemoteMetadata, remoteObjects) => {
-            val expected = MatchedMetadata(theFile,
-                                           matchByHash = Set(theRemoteMetadata),
+            val expected =
+              MatchedMetadata(theFile,
+                              matchByHash = Some(theRemoteMetadata),
                               matchByKey = Some(theRemoteMetadata))
             val result = getMetadata(theFile, remoteObjects)
             assertResult(expected)(result)
@@ -67,7 +62,7 @@ class MatchedMetadataEnricherSuite extends FunSpec {
                                               prefix)
         theRemoteKey: RemoteKey = RemoteKey.resolve("the-file")(prefix)
         remoteObjects = RemoteObjects(
-          byHash = MapView(theHash     -> Set(theRemoteKey)),
+          byHash = MapView(theHash     -> theRemoteKey),
           byKey = MapView(theRemoteKey -> theHash)
         )
         theRemoteMetadata = RemoteMetaData(theRemoteKey, theHash)
@@ -75,8 +70,9 @@ class MatchedMetadataEnricherSuite extends FunSpec {
       it("generates valid metadata") {
         env.map({
           case (theFile, theRemoteMetadata, remoteObjects) => {
-            val expected = MatchedMetadata(theFile,
-                                           matchByHash = Set(theRemoteMetadata),
+            val expected =
+              MatchedMetadata(theFile,
+                              matchByHash = Some(theRemoteMetadata),
                               matchByKey = Some(theRemoteMetadata))
             val result = getMetadata(theFile, remoteObjects)
             assertResult(expected)(result)
@@ -95,7 +91,7 @@ class MatchedMetadataEnricherSuite extends FunSpec {
                                               prefix)
         otherRemoteKey = RemoteKey("other-key")
         remoteObjects = RemoteObjects(
-          byHash = MapView(theHash       -> Set(otherRemoteKey)),
+          byHash = MapView(theHash       -> otherRemoteKey),
           byKey = MapView(otherRemoteKey -> theHash)
         )
         otherRemoteMetadata = RemoteMetaData(otherRemoteKey, theHash)
@@ -105,7 +101,7 @@ class MatchedMetadataEnricherSuite extends FunSpec {
           case (theFile, otherRemoteMetadata, remoteObjects) => {
             val expected = MatchedMetadata(theFile,
                                            matchByHash =
-                                             Set(otherRemoteMetadata),
+                                             Some(otherRemoteMetadata),
                                            matchByKey = None)
             val result = getMetadata(theFile, remoteObjects)
             assertResult(expected)(result)
@@ -128,9 +124,7 @@ class MatchedMetadataEnricherSuite extends FunSpec {
         env.map({
           case (theFile, remoteObjects) => {
             val expected =
-              MatchedMetadata(theFile,
-                              matchByHash = Set.empty,
-                              matchByKey = None)
+              MatchedMetadata(theFile, matchByHash = None, matchByKey = None)
             val result = getMetadata(theFile, remoteObjects)
             assertResult(expected)(result)
           }
@@ -150,8 +144,7 @@ class MatchedMetadataEnricherSuite extends FunSpec {
         oldHash        = MD5Hash("old-hash")
         otherRemoteKey = RemoteKey.resolve("other-key")(prefix)
         remoteObjects = RemoteObjects(
-          byHash = MapView(oldHash -> Set(theRemoteKey),
-                           theHash -> Set(otherRemoteKey)),
+          byHash = MapView(oldHash -> theRemoteKey, theHash -> otherRemoteKey),
           byKey = MapView(
             theRemoteKey   -> oldHash,
             otherRemoteKey -> theHash
@@ -168,7 +161,7 @@ class MatchedMetadataEnricherSuite extends FunSpec {
                 remoteObjects) => {
             val expected = MatchedMetadata(theFile,
                                            matchByHash =
-                                             Set(otherRemoteMetadata),
+                                             Some(otherRemoteMetadata),
                                            matchByKey = Some(theRemoteMetadata))
             val result = getMetadata(theFile, remoteObjects)
             assertResult(expected)(result)
@@ -188,7 +181,7 @@ class MatchedMetadataEnricherSuite extends FunSpec {
         theRemoteKey = theFile.remoteKey
         oldHash      = MD5Hash("old-hash")
         remoteObjects = RemoteObjects(
-          byHash = MapView(oldHash     -> Set(theRemoteKey), theHash -> Set.empty),
+          byHash = MapView(oldHash     -> theRemoteKey),
           byKey = MapView(theRemoteKey -> oldHash)
         )
         theRemoteMetadata = RemoteMetaData(theRemoteKey, oldHash)
@@ -197,7 +190,7 @@ class MatchedMetadataEnricherSuite extends FunSpec {
         env.map({
           case (theFile, theRemoteMetadata, remoteObjects) => {
             val expected = MatchedMetadata(theFile,
-                                           matchByHash = Set.empty,
+                                           matchByHash = None,
                                            matchByKey = Some(theRemoteMetadata))
             val result = getMetadata(theFile, remoteObjects)
             assertResult(expected)(result)
@@ -233,8 +226,8 @@ class MatchedMetadataEnricherSuite extends FunSpec {
                                                 prefix)
       remoteObjects = RemoteObjects(
         byHash = MapView(
-          hash     -> Set(key, keyOtherKey.remoteKey),
-          diffHash -> Set(keyDiffHash.remoteKey)
+          hash     -> key,
+          diffHash -> keyDiffHash.remoteKey
         ),
         byKey = MapView(
           key                   -> hash,
@@ -283,7 +276,10 @@ class MatchedMetadataEnricherSuite extends FunSpec {
           case (remoteObjects, _, _, _) => {
             env2.map({
               case (localFile) => {
-                val result = getMatchesByHash(invoke(localFile, remoteObjects))
+                val result = {
+                  val (_, byHash) = invoke(localFile, remoteObjects)
+                  byHash
+                }
                 assert(result.isEmpty)
               }
             })
@@ -300,7 +296,10 @@ class MatchedMetadataEnricherSuite extends FunSpec {
             assert(result.contains(diffHash))
           }
           it("should return only itself in match by hash") {
-            val result = getMatchesByHash(invoke(keyDiffHash, remoteObjects))
+            val result = {
+              val (_, byHash) = invoke(keyDiffHash, remoteObjects)
+              byHash
+            }
             assert(result === Set((keyDiffHash.remoteKey, diffHash)))
           }
         }

lib/src/test/scala/net/kemitix/thorp/lib/PlanBuilderTest.scala

@@ -1,4 +1,4 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.io.File
 import java.nio.file.Path
@@ -10,12 +10,11 @@ import net.kemitix.thorp.config.{
   ConfigurationBuilder
 }
 import net.kemitix.thorp.console._
-import net.kemitix.thorp.core.Action.{DoNothing, ToCopy, ToDelete, ToUpload}
-import net.kemitix.thorp.core.hasher.Hasher
+import net.kemitix.thorp.domain.Action.{DoNothing, ToCopy, ToDelete, ToUpload}
 import net.kemitix.thorp.domain.HashType.MD5
 import net.kemitix.thorp.domain._
-import net.kemitix.thorp.filesystem._
-import net.kemitix.thorp.storage.api.Storage
+import net.kemitix.thorp.filesystem.{Hasher, _}
+import net.kemitix.thorp.storage.Storage
 import org.scalatest.FreeSpec
 import zio.{DefaultRuntime, Task, UIO}
 
@@ -64,7 +63,7 @@ class PlanBuilderTest extends FreeSpec with TemporaryFolder {
                 val anOtherKey      = RemoteKey("other")
                 val expected        = Right(List(toCopy(anOtherKey, aHash, remoteKey)))
                 val remoteObjects = RemoteObjects(
-                  byHash = MapView(aHash     -> Set(anOtherKey)),
+                  byHash = MapView(aHash     -> anOtherKey),
                   byKey = MapView(anOtherKey -> aHash)
                 )
                 val result =
@@ -86,7 +85,7 @@ class PlanBuilderTest extends FreeSpec with TemporaryFolder {
                 // DoNothing actions should have been filtered out of the plan
                 val expected = Right(List())
                 val remoteObjects = RemoteObjects(
-                  byHash = MapView(hash     -> Set(remoteKey)),
+                  byHash = MapView(hash     -> remoteKey),
                   byKey = MapView(remoteKey -> hash)
                 )
                 val result =
@@ -107,7 +106,7 @@ class PlanBuilderTest extends FreeSpec with TemporaryFolder {
                   val expected =
                     Right(List(toUpload(remoteKey, currentHash, source, file)))
                   val remoteObjects = RemoteObjects(
-                    byHash = MapView(originalHash -> Set(remoteKey)),
+                    byHash = MapView(originalHash -> remoteKey),
                     byKey = MapView(remoteKey     -> originalHash)
                   )
                   val result =
@@ -126,7 +125,7 @@ class PlanBuilderTest extends FreeSpec with TemporaryFolder {
                   val sourceKey = RemoteKey("other-key")
                   val expected  = Right(List(toCopy(sourceKey, hash, remoteKey)))
                   val remoteObjects = RemoteObjects(
-                    byHash = MapView(hash -> Set(sourceKey)),
+                    byHash = MapView(hash -> sourceKey),
                     byKey = MapView.empty
                   )
                   val result =
@@ -151,7 +150,7 @@ class PlanBuilderTest extends FreeSpec with TemporaryFolder {
               // DoNothing actions should have been filtered out of the plan
               val expected = Right(List())
               val remoteObjects = RemoteObjects(
-                byHash = MapView(hash     -> Set(remoteKey)),
+                byHash = MapView(hash     -> remoteKey),
                 byKey = MapView(remoteKey -> hash)
               )
               val result =
@@ -168,7 +167,7 @@ class PlanBuilderTest extends FreeSpec with TemporaryFolder {
               val hash     = MD5Hash("file-content")
               val expected = Right(List(toDelete(remoteKey)))
               val remoteObjects = RemoteObjects(
-                byHash = MapView(hash     -> Set(remoteKey)),
+                byHash = MapView(hash     -> remoteKey),
                 byKey = MapView(remoteKey -> hash)
               )
               val result =
@@ -255,7 +254,7 @@ class PlanBuilderTest extends FreeSpec with TemporaryFolder {
               val hash2    = md5Hash(fileInSecondSource)
               val expected = Right(List())
               val remoteObjects =
-                RemoteObjects(byHash = MapView(hash2     -> Set(remoteKey2)),
+                RemoteObjects(byHash = MapView(hash2     -> remoteKey2),
                               byKey = MapView(remoteKey2 -> hash2))
               val result =
                 invoke(options(firstSource)(secondSource),
@@ -276,7 +275,7 @@ class PlanBuilderTest extends FreeSpec with TemporaryFolder {
             withDirectory(secondSource => {
               val expected = Right(List())
               val remoteObjects =
-                RemoteObjects(byHash = MapView(hash1     -> Set(remoteKey1)),
+                RemoteObjects(byHash = MapView(hash1     -> remoteKey1),
                               byKey = MapView(remoteKey1 -> hash1))
               val result =
                 invoke(options(firstSource)(secondSource),
@@ -369,7 +368,10 @@ class PlanBuilderTest extends FreeSpec with TemporaryFolder {
       for {
         config        <- ConfigurationBuilder.buildConfig(configOptions)
         _             <- Config.set(config)
-        plan   <- PlanBuilder.createPlan
+        bucket        <- Config.bucket
+        prefix        <- Config.prefix
+        remoteObjects <- Storage.list(bucket, prefix)
+        plan          <- PlanBuilder.createPlan(remoteObjects)
       } yield plan
     new DefaultRuntime {}
       .unsafeRunSync(testProgram.provide(testEnv))

lib/src/test/scala/net/kemitix/thorp/lib/PlanExecutorTest.scala

@@ -1,17 +1,17 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import net.kemitix.thorp.config.Config
 import net.kemitix.thorp.console.Console
-import net.kemitix.thorp.core.Action.DoNothing
+import net.kemitix.thorp.domain.Action.DoNothing
 import net.kemitix.thorp.domain.{
   Bucket,
   RemoteKey,
   StorageQueueEvent,
   SyncTotals
 }
-import net.kemitix.thorp.storage.api.Storage
+import net.kemitix.thorp.storage.Storage
 import org.scalatest.FreeSpec
-import zio.{DefaultRuntime, ZIO}
+import zio.{DefaultRuntime, UIO, ZIO}
 
 class PlanExecutorTest extends FreeSpec {
 
@@ -33,7 +33,7 @@ class PlanExecutorTest extends FreeSpec {
       LazyList.from(1 to nActions).map(DoNothing(bucket, remoteKey, _))
 
     val syncTotals  = SyncTotals.empty
-    val archiveTask = UnversionedMirrorArchive.default(syncTotals)
+    val archiveTask = UIO(UnversionedMirrorArchive)
 
     val syncPlan = SyncPlan(input, syncTotals)
     val program: ZIO[Storage with Config with Console,

lib/src/test/scala/net/kemitix/thorp/lib/SequencePlanTest.scala

@@ -1,15 +1,9 @@
-package net.kemitix.thorp.core
+package net.kemitix.thorp.lib
 
 import java.io.File
 
-import net.kemitix.thorp.core.Action._
-import net.kemitix.thorp.domain.{
-  Bucket,
-  HashType,
-  LocalFile,
-  MD5Hash,
-  RemoteKey
-}
+import net.kemitix.thorp.domain.Action._
+import net.kemitix.thorp.domain._
 import org.scalatest.FreeSpec
 
 class SequencePlanTest extends FreeSpec {
@@ -26,9 +20,9 @@ class SequencePlanTest extends FreeSpec {
       val file2      = new File("aFile")
       val source     = new File("source")
       val localFile1 =
-        LocalFile(file1, source, hashes, remoteKey1)
+        LocalFile(file1, source, hashes, remoteKey1, file1.length)
       val _ =
-        LocalFile(file2, source, hashes, remoteKey2)
+        LocalFile(file2, source, hashes, remoteKey2, file2.length)
       val copy1   = ToCopy(bucket, remoteKey1, hash, remoteKey2, size)
       val copy2   = ToCopy(bucket, remoteKey2, hash, remoteKey1, size)
       val upload1 = ToUpload(bucket, localFile1, size)

modules.dot

@@ -0,0 +1,26 @@
+digraph deps {
+
+app -> cli
+app -> lib
+app -> "storage-aws"
+
+cli -> config
+
+lib -> storage
+lib -> console
+lib -> config
+lib -> filesystem
+lib -> domain
+
+"storage-aws" -> storage
+
+config -> filesystem
+config -> domain
+
+storage -> domain
+
+console -> domain
+
+filesystem -> domain
+
+}

storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Lister.scala

@@ -5,11 +5,11 @@ import com.amazonaws.services.s3.model.{
   ListObjectsV2Result,
   S3ObjectSummary
 }
-import net.kemitix.thorp.console._
 import net.kemitix.thorp.domain.{Bucket, RemoteKey, RemoteObjects}
+import net.kemitix.thorp.storage.Storage
 import net.kemitix.thorp.storage.aws.S3ObjectsByHash.byHash
 import net.kemitix.thorp.storage.aws.S3ObjectsByKey.byKey
-import zio.{Task, RIO}
+import zio.{RIO, Task}
 
 import scala.jdk.CollectionConverters._
 
@@ -21,7 +21,7 @@ trait Lister {
   def listObjects(amazonS3: AmazonS3.Client)(
       bucket: Bucket,
       prefix: RemoteKey
-  ): RIO[Console, RemoteObjects] = {
+  ): RIO[Storage, RemoteObjects] = {
 
     def request =
       new ListObjectsV2Request()
@@ -31,15 +31,16 @@ trait Lister {
     def requestMore: Token => ListObjectsV2Request =
       token => request.withContinuationToken(token)
 
-    def fetchBatch: ListObjectsV2Request => RIO[Console, Batch] =
-      request => ListerLogger.logFetchBatch *> tryFetchBatch(amazonS3)(request)
+    def fetchBatch: ListObjectsV2Request => Task[Batch] =
+      request => tryFetchBatch(amazonS3)(request)
 
-    def fetchMore: Option[Token] => RIO[Console, LazyList[S3ObjectSummary]] = {
+    def fetchMore: Option[Token] => Task[LazyList[S3ObjectSummary]] = {
       case None        => RIO.succeed(LazyList.empty)
       case Some(token) => fetch(requestMore(token))
     }
 
-    def fetch: ListObjectsV2Request => RIO[Console, LazyList[S3ObjectSummary]] =
+    def fetch: ListObjectsV2Request => Task[LazyList[S3ObjectSummary]] =
+
       request =>
         for {
           batch <- fetchBatch(request)

storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ObjectsByHash.scala

@@ -9,12 +9,11 @@ object S3ObjectsByHash {
 
   def byHash(
       os: LazyList[S3ObjectSummary]
-  ): MapView[MD5Hash, Set[RemoteKey]] = {
-    val mD5HashToS3Objects: Map[MD5Hash, LazyList[S3ObjectSummary]] =
-      os.groupBy(o => MD5Hash(o.getETag.filter(_ != '"')))
-    mD5HashToS3Objects.view.mapValues { os =>
-      os.map(_.getKey).map(RemoteKey(_)).toSet
-    }
+  ): MapView[MD5Hash, RemoteKey] =
+    os.map { o =>
+        (MD5Hash(o.getETag) -> RemoteKey(o.getKey))
       }
+      .toMap
+      .view
 
 }

storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3Storage.scala

@@ -2,13 +2,11 @@ package net.kemitix.thorp.storage.aws
 
 import com.amazonaws.services.s3.AmazonS3ClientBuilder
 import com.amazonaws.services.s3.transfer.TransferManagerBuilder
-import net.kemitix.thorp.config.Config
-import net.kemitix.thorp.console.Console
 import net.kemitix.thorp.domain.StorageQueueEvent.ShutdownQueueEvent
 import net.kemitix.thorp.domain._
-import net.kemitix.thorp.storage.api.Storage
-import net.kemitix.thorp.storage.api.Storage.Service
-import zio.{RIO, UIO, ZIO}
+import net.kemitix.thorp.storage.Storage
+import net.kemitix.thorp.storage.Storage.Service
+import zio.{RIO, UIO}
 
 object S3Storage {
   trait Live extends Storage {
@@ -21,14 +19,14 @@ object S3Storage {
           TransferManagerBuilder.defaultTransferManager)
 
       override def listObjects(bucket: Bucket,
-                               prefix: RemoteKey): RIO[Console, RemoteObjects] =
+                               prefix: RemoteKey): RIO[Storage, RemoteObjects] =
         Lister.listObjects(client)(bucket, prefix)
 
       override def upload(
           localFile: LocalFile,
           bucket: Bucket,
           listenerSettings: UploadEventListener.Settings,
-      ): ZIO[Config, Nothing, StorageQueueEvent] =
+      ): UIO[StorageQueueEvent] =
         Uploader.upload(transferManager)(
           Uploader.Request(localFile, bucket, listenerSettings))
 

storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Uploader.scala

@@ -5,7 +5,6 @@ import java.util.concurrent.locks.StampedLock
 import com.amazonaws.event.ProgressEventType.RESPONSE_BYTE_TRANSFER_EVENT
 import com.amazonaws.event.{ProgressEvent, ProgressListener}
 import com.amazonaws.services.s3.model.{ObjectMetadata, PutObjectRequest}
-import net.kemitix.thorp.config.Config
 import net.kemitix.thorp.domain.Implicits._
 import net.kemitix.thorp.domain.StorageQueueEvent.{
   Action,
@@ -19,12 +18,12 @@ import net.kemitix.thorp.domain.UploadEvent.{
 }
 import net.kemitix.thorp.domain.{StorageQueueEvent, _}
 import net.kemitix.thorp.storage.aws.Uploader.Request
-import zio.{UIO, ZIO}
+import zio.UIO
 
 trait Uploader {
 
   def upload(transferManager: => AmazonTransferManager)(
-      request: Request): ZIO[Config, Nothing, StorageQueueEvent] =
+      request: Request): UIO[StorageQueueEvent] =
     transfer(transferManager)(request)
       .catchAll(handleError(request.localFile.remoteKey))
 
@@ -35,8 +34,7 @@ trait Uploader {
   private def transfer(transferManager: => AmazonTransferManager)(
       request: Request
   ) =
-    putObjectRequest(request) >>=
-      dispatch(transferManager)
+    dispatch(transferManager)(putObjectRequest(request))
 
   private def dispatch(transferManager: AmazonTransferManager)(
       putObjectRequest: PutObjectRequest
@@ -57,13 +55,10 @@ trait Uploader {
                            request.localFile.remoteKey.key,
                            request.localFile.file)
         .withMetadata(metadata(request.localFile))
-    for {
-      batchMode <- Config.batchMode
-      r = if (batchMode) putRequest
+    if (request.uploadEventListener.batchMode) putRequest
     else
       putRequest.withGeneralProgressListener(
         progressListener(request.uploadEventListener))
-    } yield r
   }
 
   private def metadata: LocalFile => ObjectMetadata = localFile => {

storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/hasher/ETagGenerator.scala

@@ -5,10 +5,9 @@ import java.nio.file.Path
 import com.amazonaws.services.s3.model.PutObjectRequest
 import com.amazonaws.services.s3.transfer.TransferManagerConfiguration
 import com.amazonaws.services.s3.transfer.internal.TransferManagerUtils
-import net.kemitix.thorp.core.hasher.Hasher
 import net.kemitix.thorp.domain.HashType.MD5
 import net.kemitix.thorp.domain.MD5Hash
-import net.kemitix.thorp.filesystem.FileSystem
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher}
 import zio.{RIO, ZIO}
 
 private trait ETagGenerator {

storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/hasher/S3Hasher.scala

@@ -2,11 +2,10 @@ package net.kemitix.thorp.storage.aws.hasher
 
 import java.nio.file.Path
 
-import net.kemitix.thorp.core.hasher.Hasher
-import net.kemitix.thorp.core.hasher.Hasher.Live.{hasher => CoreHasher}
-import net.kemitix.thorp.core.hasher.Hasher.Service
 import net.kemitix.thorp.domain.{HashType, MD5Hash}
-import net.kemitix.thorp.filesystem.FileSystem
+import net.kemitix.thorp.filesystem.Hasher.Live.{hasher => CoreHasher}
+import net.kemitix.thorp.filesystem.Hasher.Service
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher}
 import net.kemitix.thorp.storage.aws.ETag
 import zio.RIO
 

storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/AmazonS3ClientTestFixture.scala

@@ -1,12 +1,10 @@
 package net.kemitix.thorp.storage.aws
 
-import net.kemitix.thorp.config.Config
-import net.kemitix.thorp.console.Console
 import net.kemitix.thorp.domain.StorageQueueEvent.ShutdownQueueEvent
 import net.kemitix.thorp.domain._
-import net.kemitix.thorp.storage.api.Storage
+import net.kemitix.thorp.storage.Storage
 import org.scalamock.scalatest.MockFactory
-import zio.{RIO, UIO, ZIO}
+import zio.{RIO, UIO}
 
 trait AmazonS3ClientTestFixture extends MockFactory {
 
@@ -29,14 +27,14 @@ trait AmazonS3ClientTestFixture extends MockFactory {
         override def listObjects(
             bucket: Bucket,
             prefix: RemoteKey
-        ): RIO[Console, RemoteObjects] =
+        ): RIO[Storage, RemoteObjects] =
           Lister.listObjects(client)(bucket, prefix)
 
         override def upload(
             localFile: LocalFile,
             bucket: Bucket,
             listenerSettings: UploadEventListener.Settings,
-        ): ZIO[Config, Nothing, StorageQueueEvent] =
+        ): UIO[StorageQueueEvent] =
           Uploader.upload(transferManager)(
             Uploader.Request(localFile, bucket, listenerSettings))
 

storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/ListerTest.scala

@@ -8,18 +8,15 @@ import com.amazonaws.services.s3.model.{
   ListObjectsV2Result,
   S3ObjectSummary
 }
-import net.kemitix.thorp.console._
 import net.kemitix.thorp.domain.NonUnit.~*
 import net.kemitix.thorp.domain._
+import net.kemitix.thorp.storage.Storage
 import org.scalatest.FreeSpec
 import org.scalatest.Matchers._
-import zio.internal.PlatformLive
-import zio.{Runtime, Task, UIO}
+import zio.{DefaultRuntime, Task, UIO}
 
 class ListerTest extends FreeSpec {
 
-  private val runtime = Runtime(Console.Live, PlatformLive.Default)
-
   "list" - {
     val bucket = Bucket("aBucket")
     val prefix = RemoteKey("aRemoteKey")
@@ -28,7 +25,7 @@ class ListerTest extends FreeSpec {
         val nowDate         = new Date
         val key             = "key"
         val etag            = "etag"
-        val expectedHashMap = Map(MD5Hash(etag) -> Set(RemoteKey(key)))
+        val expectedHashMap = Map(MD5Hash(etag) -> RemoteKey(key))
         val expectedKeyMap  = Map(RemoteKey(key) -> MD5Hash(etag))
         new AmazonS3ClientTestFixture {
           (fixture.amazonS3Client.listObjectsV2 _)
@@ -51,8 +48,8 @@ class ListerTest extends FreeSpec {
         val key2    = "key2"
         val etag2   = "etag2"
         val expectedHashMap = Map(
-          MD5Hash(etag1) -> Set(RemoteKey(key1)),
-          MD5Hash(etag2) -> Set(RemoteKey(key2))
+          MD5Hash(etag1) -> RemoteKey(key1),
+          MD5Hash(etag2) -> RemoteKey(key2)
         )
         val expectedKeyMap = Map(
           RemoteKey(key1) -> MD5Hash(etag1),
@@ -121,8 +118,10 @@ class ListerTest extends FreeSpec {
     }
     def invoke(amazonS3Client: AmazonS3.Client)(bucket: Bucket,
                                                 prefix: RemoteKey) =
-      runtime.unsafeRunSync {
-        Lister.listObjects(amazonS3Client)(bucket, prefix)
+      new DefaultRuntime {}.unsafeRunSync {
+        Lister
+          .listObjects(amazonS3Client)(bucket, prefix)
+          .provide(Storage.Test)
       }.toEither
 
   }

storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/S3ObjectsByHashSuite.scala

@@ -14,8 +14,8 @@ class S3ObjectsByHashSuite extends FunSpec {
     val o2   = s3object(hash, key2)
     val os   = LazyList(o1, o2)
     it("should group by the hash value") {
-      val expected: Map[MD5Hash, Set[RemoteKey]] = Map(
-        hash -> Set(key1, key2)
+      val expected: Map[MD5Hash, RemoteKey] = Map(
+        hash -> key2
       )
       val result = Map.from(S3ObjectsByHash.byHash(os))
       assertResult(expected)(result)

storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/StorageServiceSuite.scala

@@ -1,9 +1,9 @@
 package net.kemitix.thorp.storage.aws
 
-import net.kemitix.thorp.config.Resource
-import net.kemitix.thorp.core.{LocalFileValidator, S3MetaDataEnricher}
+import net.kemitix.thorp.lib.{LocalFileValidator, S3MetaDataEnricher}
 import net.kemitix.thorp.domain.HashType.MD5
 import net.kemitix.thorp.domain._
+import net.kemitix.thorp.filesystem.Resource
 import org.scalamock.scalatest.MockFactory
 import org.scalatest.FunSpec
 
@@ -39,8 +39,8 @@ class StorageServiceSuite extends FunSpec with MockFactory {
                                                 prefix)
       s3ObjectsData = RemoteObjects(
         byHash = MapView(
-          hash     -> Set(key, keyOtherKey.remoteKey),
-          diffHash -> Set(keyDiffHash.remoteKey)
+          hash     -> key,
+          diffHash -> keyDiffHash.remoteKey
         ),
         byKey = MapView(
           key                   -> hash,
@@ -59,14 +59,14 @@ class StorageServiceSuite extends FunSpec with MockFactory {
     def invoke(localFile: LocalFile, s3ObjectsData: RemoteObjects) =
       S3MetaDataEnricher.getS3Status(localFile, s3ObjectsData)
 
-    def getMatchesByKey(status: (Option[MD5Hash], Set[(RemoteKey, MD5Hash)]))
-      : Option[MD5Hash] = {
+    def getMatchesByKey(
+        status: (Option[MD5Hash], Map[MD5Hash, RemoteKey])): Option[MD5Hash] = {
       val (byKey, _) = status
       byKey
     }
 
-    def getMatchesByHash(status: (Option[MD5Hash], Set[(RemoteKey, MD5Hash)]))
-      : Set[(RemoteKey, MD5Hash)] = {
+    def getMatchesByHash(status: (Option[MD5Hash], Map[MD5Hash, RemoteKey]))
+      : Map[MD5Hash, RemoteKey] = {
       val (_, byHash) = status
       byHash
     }

storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/UploaderTest.scala

@@ -5,7 +5,7 @@ import java.io.File
 import com.amazonaws.SdkClientException
 import com.amazonaws.services.s3.model.AmazonS3Exception
 import com.amazonaws.services.s3.transfer.model.UploadResult
-import net.kemitix.thorp.config.{Config, Resource}
+import net.kemitix.thorp.config.Config
 import net.kemitix.thorp.domain.HashType.MD5
 import net.kemitix.thorp.domain.StorageQueueEvent.{
   Action,
@@ -17,6 +17,7 @@ import org.scalamock.scalatest.MockFactory
 import org.scalatest.FreeSpec
 import zio.{DefaultRuntime, Task}
 import net.kemitix.thorp.domain.NonUnit.~*
+import net.kemitix.thorp.filesystem.Resource
 
 class UploaderTest extends FreeSpec with MockFactory {
 
@@ -26,7 +27,7 @@ class UploaderTest extends FreeSpec with MockFactory {
     val aHash         = MD5Hash("aHash")
     val hashes        = Map[HashType, MD5Hash](MD5 -> aHash)
     val remoteKey     = RemoteKey("aRemoteKey")
-    val localFile     = LocalFile(aFile, aSource, hashes, remoteKey)
+    val localFile     = LocalFile(aFile, aSource, hashes, remoteKey, aFile.length)
     val bucket        = Bucket("aBucket")
     val uploadResult  = new UploadResult
     uploadResult.setKey(remoteKey.key)
@@ -35,7 +36,7 @@ class UploaderTest extends FreeSpec with MockFactory {
       override def waitForUploadResult: UploadResult = uploadResult
     }
     val listenerSettings =
-      UploadEventListener.Settings(localFile, 0, SyncTotals(1, 0, 0), 0)
+      UploadEventListener.Settings(localFile, 0, 0, batchMode = true)
     "when no error" in {
       val expected =
         Right(UploadQueueEvent(remoteKey, aHash))

storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/hasher/ETagGeneratorTest.scala

@@ -3,11 +3,9 @@ package net.kemitix.thorp.storage.aws.hasher
 import java.nio.file.Path
 
 import com.amazonaws.services.s3.transfer.TransferManagerConfiguration
-import net.kemitix.thorp.config.Resource
-import net.kemitix.thorp.core.hasher.Hasher
 import net.kemitix.thorp.domain.HashType.MD5
 import net.kemitix.thorp.domain.MD5Hash
-import net.kemitix.thorp.filesystem.FileSystem
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher, Resource}
 import org.scalatest.FunSpec
 import zio.DefaultRuntime
 

storage/src/main/scala/net/kemitix/thorp/storage/Storage.scala

@@ -1,9 +1,7 @@
-package net.kemitix.thorp.storage.api
+package net.kemitix.thorp.storage
 
-import net.kemitix.thorp.config.Config
-import net.kemitix.thorp.console.Console
 import net.kemitix.thorp.domain._
-import zio.{Task, RIO, UIO, ZIO}
+import zio.{RIO, Task, UIO, ZIO}
 
 trait Storage {
   val storage: Storage.Service
@@ -15,13 +13,13 @@ object Storage {
     def listObjects(
         bucket: Bucket,
         prefix: RemoteKey
-    ): RIO[Storage with Console, RemoteObjects]
+    ): RIO[Storage, RemoteObjects]
 
     def upload(
         localFile: LocalFile,
         bucket: Bucket,
         listenerSettings: UploadEventListener.Settings,
-    ): ZIO[Storage with Config, Nothing, StorageQueueEvent]
+    ): ZIO[Storage, Nothing, StorageQueueEvent]
 
     def copy(
         bucket: Bucket,
@@ -53,9 +51,8 @@ object Storage {
 
     val storage: Service = new Service {
 
-      override def listObjects(
-          bucket: Bucket,
-          prefix: RemoteKey): RIO[Storage with Console, RemoteObjects] =
+      override def listObjects(bucket: Bucket,
+                               prefix: RemoteKey): RIO[Storage, RemoteObjects] =
         listResult
 
       override def upload(
@@ -85,14 +82,14 @@ object Storage {
   object Test extends Test
 
   final def list(bucket: Bucket,
-                 prefix: RemoteKey): RIO[Storage with Console, RemoteObjects] =
+                 prefix: RemoteKey): RIO[Storage, RemoteObjects] =
     ZIO.accessM(_.storage listObjects (bucket, prefix))
 
   final def upload(
       localFile: LocalFile,
       bucket: Bucket,
       listenerSettings: UploadEventListener.Settings
-  ): ZIO[Storage with Config, Nothing, StorageQueueEvent] =
+  ): ZIO[Storage, Nothing, StorageQueueEvent] =
     ZIO.accessM(_.storage upload (localFile, bucket, listenerSettings))
 
   final def copy(

uishell/src/main/scala/net/kemitix/throp/uishell/ProgressEvent.scala

@@ -0,0 +1,22 @@
+package net.kemitix.throp.uishell
+
+import net.kemitix.eip.zio.MessageChannel
+import net.kemitix.thorp.config.Config
+import net.kemitix.thorp.console.Console
+import net.kemitix.thorp.filesystem.{FileSystem, Hasher}
+import zio.clock.Clock
+
+sealed trait ProgressEvent
+
+object ProgressEvent {
+  type Env = Console
+  type ProgressSender =
+    MessageChannel.ESender[Config with Clock with Hasher with FileSystem,
+                           Throwable,
+                           ProgressEvent]
+  type ProgressReceiver =
+    MessageChannel.Receiver[ProgressEvent.Env, ProgressEvent]
+  type ProgressChannel = MessageChannel.Channel[Console, ProgressEvent]
+
+  final case class PingEvent() extends ProgressEvent
+}

uishell/src/main/scala/net/kemitix/throp/uishell/UIEvent.scala

@@ -0,0 +1,37 @@
+package net.kemitix.throp.uishell
+
+import net.kemitix.thorp.domain._
+
+sealed trait UIEvent
+object UIEvent {
+  case object ShowValidConfig extends UIEvent
+
+  case class RemoteDataFetched(size: Int) extends UIEvent
+
+  case class ShowSummary(counters: Counters) extends UIEvent
+
+  case class FileFound(localFile: LocalFile) extends UIEvent
+
+  case class ActionChosen(action: Action) extends UIEvent
+
+  /**
+    * The content of the file ({{hash}}) that will be placed
+    * at {{remoteKey}} is already being uploaded to another
+    * location. Once that upload has completed, its RemoteKey
+    * will become available and a Copy action can be made.
+    * @param remoteKey where this upload will copy the other to
+    * @param hash the hash of the file being uploaded
+    */
+  case class AwaitingAnotherUpload(remoteKey: RemoteKey, hash: MD5Hash)
+      extends UIEvent
+
+  case class AnotherUploadWaitComplete(action: Action) extends UIEvent
+
+  case class ActionFinished(action: Action,
+                            actionCounter: Int,
+                            bytesCounter: Long)
+      extends UIEvent
+
+  case class KeyFound(remoteKey: RemoteKey) extends UIEvent
+
+}

uishell/src/main/scala/net/kemitix/throp/uishell/UIShell.scala

@@ -0,0 +1,96 @@
+package net.kemitix.throp.uishell
+
+import net.kemitix.eip.zio.MessageChannel
+import net.kemitix.thorp.config.Config
+import net.kemitix.thorp.console.ConsoleOut.{
+  CopyComplete,
+  DeleteComplete,
+  UploadComplete
+}
+import net.kemitix.thorp.console.{Console, ConsoleOut}
+import net.kemitix.thorp.domain.{
+  Action,
+  Counters,
+  LocalFile,
+  MD5Hash,
+  RemoteKey
+}
+import net.kemitix.thorp.domain.Action.ToUpload
+import net.kemitix.thorp.domain.Terminal.eraseToEndOfScreen
+import zio.{UIO, ZIO}
+
+object UIShell {
+  def receiver: UIO[MessageChannel.UReceiver[Console with Config, UIEvent]] =
+    UIO { uiEventMessage =>
+      uiEventMessage.body match {
+        case UIEvent.ShowValidConfig         => showValidConfig
+        case UIEvent.RemoteDataFetched(size) => remoteDataFetched(size)
+        case UIEvent.ShowSummary(counters)   => showSummary(counters)
+        case UIEvent.FileFound(localFile)    => fileFound(localFile)
+        case UIEvent.ActionChosen(action)    => UIO(())
+        case UIEvent.AwaitingAnotherUpload(remoteKey, hash) =>
+          awaitingUpload(remoteKey, hash)
+        case UIEvent.AnotherUploadWaitComplete(action) =>
+          uploadWaitComplete(action)
+        case UIEvent.ActionFinished(action, _, _) => actionFinished(action)
+        case UIEvent.KeyFound(_)                  => UIO(())
+      }
+    }
+
+  private def actionFinished(
+      action: Action): ZIO[Console with Config, Nothing, Unit] = {
+    for {
+      batchMode <- Config.batchMode
+      _ <- action match {
+        case _: Action.DoNothing => UIO(())
+        case ToUpload(_, localFile, _) =>
+          Console.putMessageLnB(UploadComplete(localFile.remoteKey), batchMode)
+        case Action.ToCopy(_, sourceKey, _, targetKey, _) =>
+          Console.putMessageLnB(CopyComplete(sourceKey, targetKey), batchMode)
+        case Action.ToDelete(_, remoteKey, _) =>
+          Console.putMessageLnB(DeleteComplete(remoteKey), batchMode)
+      }
+    } yield ()
+  }
+
+  private def uploadWaitComplete(
+      action: Action): ZIO[Console, Nothing, Unit] = {
+    Console.putStrLn(s"Finished waiting to other upload - now $action")
+  }
+
+  private def awaitingUpload(remoteKey: RemoteKey,
+                             hash: MD5Hash): ZIO[Console, Nothing, Unit] = {
+    Console.putStrLn(
+      s"Awaiting another upload of $hash before copying it to $remoteKey")
+  }
+
+  private def fileFound(
+      localFile: LocalFile): ZIO[Console with Config, Nothing, Unit] = {
+    for {
+      batchMode <- Config.batchMode
+      _         <- ZIO.when(batchMode)(Console.putStrLn(s"Found: ${localFile.file}"))
+    } yield ()
+  }
+
+  private def showSummary(
+      counters: Counters): ZIO[Console with Config, Nothing, Unit] = {
+    Console.putStrLn(eraseToEndOfScreen) *>
+      Console.putStrLn(s"Uploaded ${counters.uploaded} files") *>
+      Console.putStrLn(s"Copied   ${counters.copied} files") *>
+      Console.putStrLn(s"Deleted  ${counters.deleted} files") *>
+      Console.putStrLn(s"Errors   ${counters.errors}")
+  }
+
+  private def remoteDataFetched(size: Int): ZIO[Console, Nothing, Unit] = {
+    Console.putStrLn(s"Found $size remote objects")
+  }
+
+  private def showValidConfig: ZIO[Console with Config, Nothing, Unit] = {
+    for {
+      bucket  <- Config.bucket
+      prefix  <- Config.prefix
+      sources <- Config.sources
+      _       <- Console.putMessageLn(ConsoleOut.ValidConfig(bucket, prefix, sources))
+    } yield ()
+  }
+}