Sample command

gistfile1.scala

package com.typesafe.sbt.rr

import sbt._
import Keys._
import complete.DefaultParsers._
import com.typesafe.sbt.SbtNativePackager._
import NativePackagerKeys._
import sbt.complete.Parser

object Import {

  object ReactiveRuntimeKeys {
    val watchdog = SettingKey[URI]("rr-watchdog", "The location of the watchdog. Defaults to 'http://127.0.0.1:9005'.")
  }

}

object SbtReactiveRuntime extends AutoPlugin {
  val autoImport = Import

  import autoImport._
  import ReactiveRuntimeKeys._

  override def projectSettings: Seq[Setting[_]] = Seq(
    commands += load,
    watchdog := new URI("http://127.0.0.1:9005")
  )

  private def getLatestBundles(state: State): Set[URI] = {
    val maybeResult: Option[(State, Result[sbt.File])] = Project.runTask(dist in ReactiveRuntime, state)
    maybeResult match {
      case None => Set.empty
      case Some((s, Inc(inc))) =>
        Incomplete.show(inc.tpe)
        Set.empty
      case Some((s, Value(f: File))) => Set(f.toURI)
    }
  }

  private def bundle(state: State): Parser[URI] = Space ~> Uri(getLatestBundles(state))

  // FIXME: How does the help command work?
  private def load = Command("load", Help(("load", "<bundle>"), Map("bundle" -> "A URI pointing to the bundle to load")))(bundle) {
    (state, bundle) =>
      println("Hi " + bundle)
      state
  }

}