chore: Minor cleanup, plus bring back the module file Git thought was…

… being deleted rather than replaced

config/groovy/BaseCommand.groovy

@@ -14,4 +14,4 @@ import picocli.CommandLine.Command
         commandListHeading   = "%n@|green Commands:|@%n%n")
 class BaseCommand {
 
-}
+}

config/groovy/Get.groovy

@@ -3,7 +3,8 @@
 
 import picocli.CommandLine.ParentCommand
 import picocli.CommandLine.Command
-import picocli.CommandLine.Mixin // Actually in use, annotation below may show syntax error due to Groovy's annotation by the same name. Works fine
+// Actually in use, annotation below may show syntax error due to Groovy's annotation by the same name. Works fine
+import picocli.CommandLine.Mixin
 import picocli.CommandLine.Parameters
 
 /**

config/groovy/GooeyCLI.groovy

@@ -1,3 +1,6 @@
+// Copyright 2020 The Terasology Foundation
+// SPDX-License-Identifier: Apache-2.0
+
 // Grab the Groovy extensions for PicoCLI - in IntelliJ Alt-ENTER on a `@Grab` to register contents for syntax highlighting
 @Grab('info.picocli:picocli-groovy:4.3.2')
 // TODO: Actually exists inside the Gradle Wrapper - gradle-6.4.1\lib\groovy-all-1.3-2.5.10.jar\groovyjarjarpicocli\

config/groovy/Init.groovy

@@ -3,7 +3,8 @@
 
 import picocli.CommandLine.Command
 import picocli.CommandLine.Help.Ansi
-import picocli.CommandLine.Mixin // Is in use, IDE may think the Groovy-supplied is in use below and mark this unused
+// Is in use, IDE may think the Groovy-supplied is in use below and mark this unused
+import picocli.CommandLine.Mixin
 import picocli.CommandLine.Parameters
 
 @Command(name = "init", description = "Initializes a workspace with some useful things")

config/groovy/ItemCommand.groovy

@@ -11,4 +11,4 @@ abstract class ItemCommand extends BaseCommand {
      * @return the instantiated item type manager class
      */
     abstract ManagedItem getManager(String optionGitOrigin)
-}
+}

config/groovy/Module.groovy

@@ -0,0 +1,28 @@
+// Copyright 2020 The Terasology Foundation
+// SPDX-License-Identifier: Apache-2.0
+
+import picocli.CommandLine.Command
+import picocli.CommandLine.HelpCommand
+
+// If using local groovy files the subcommands section may highlight as bad syntax in IntelliJ - that's OK
+@Command(name = "module",
+        synopsisSubcommandLabel = "COMMAND", // Default is [COMMAND] indicating optional, but sub command here is required
+        subcommands = [
+                HelpCommand.class, // Adds standard help options (help as a subcommand, -h, and --help)
+                Recurse.class,
+                Update.class,
+                Get.class], // Note that these Groovy classes *must* start with a capital letter for some reason
+        description = "Sub command for interacting with modules")
+class Module extends ItemCommand {
+    @Override
+    ManagedItem getManager(String optionGitOrigin) {
+        return new ManagedModule(optionGitOrigin)
+    }
+
+    // This is an example of a subcommand via method - used here so we can directly hit ManagedModule for something module-specific
+    // If in an external Refresh.groovy it _could_ specify ManagedModule, but it then could be added later to a non-module and break
+    @Command(name = "refresh", description = "Refreshes all build.gradle files in module directories")
+    void refresh() {
+        new ManagedModule().refreshGradle()
+    }
+}