Using atom-package-deps to install plugin dependencies

README.md

@@ -52,10 +52,13 @@ For the full list of implemented and planned features see the [server roadmap](h
 
 ## Installation
 
-* You need to have packages for basic Scala language support and the [IDE UI](https://github.com/facebook-atom/atom-ide-ui) installed. You can install all three at once with this command:
+* You can install it using Atom interface or by running this command:
     ```
-     apm install language-scala atom-ide-ui ide-scala
+    apm install ide-scala
     ```
+    On the first launch it will automatically install its dependencies if needed:
+    + [language-scala](https://github.com/atom-community/language-scala) for basic Scala syntax highlighting
+    + [atom-ide-ui](https://github.com/facebook-atom/atom-ide-ui) for the Atom IDE interface
 
 * If you are using [jEnv](http://www.jenv.be) you may need to export `JAVA_HOME` using jEnv plugin:
     ```

apm.sbt

@@ -100,8 +100,13 @@ packageJson := {
     ),
     "dependencies" -> Json.obj(
       "atom-languageclient" -> "0.7.0",
+      "atom-package-deps" -> "4.6.1",
       "find-java-home" -> "0.2.0"
     ),
+    "package-deps" -> Json.arr(
+      "language-scala",
+      "atom-ide-ui"
+    ),
     "consumedServices" -> Json.obj(
       "linter-indie" -> Json.obj(
         "versions" -> Json.obj("2.0.0" -> "consumeLinterV2")

src/main/scala/Exports.scala

@@ -3,12 +3,23 @@ package laughedelic.atom.ide.scala
 import scala.scalajs.js, js.annotation._
 import laughedelic.atom.ide.ui.busysignal.BusySignalService
 
-// NOTE: This is pure boilerplate. We need it because we can't simply say `module.exports = new ScalaLanguageClient();`
+@js.native @JSImport("atom-package-deps", JSImport.Namespace)
+object packageDeps extends js.Object {
+  def install(
+    packageName: String = js.native,
+    showPrompt: Boolean = js.native
+  ): js.Promise[Unit] = js.native
+}
+
+// NOTE: This is pure boilerplate. We need it because we can"t simply say `module.exports = new ScalaLanguageClient();`
 object Exports {
   private val client = new ScalaLanguageClient()
 
   @JSExportTopLevel("activate")
-  def activate(): Unit = client.activate()
+  def activate(): Unit = {
+    packageDeps.install("ide-scala", showPrompt = false)
+    client.activate()
+  }
   @JSExportTopLevel("deactivate")
   def deactivate(): js.Promise[js.Any] = client.deactivate()