Wizard: format templates code

idea/idea-new-project-wizard/src/org/jetbrains/kotlin/tools/projectWizard/wizard/service/IdeaFileFormattingService.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.tools.projectWizard.wizard.service
+
+import com.intellij.openapi.project.Project
+import com.intellij.psi.codeStyle.CodeStyleManager
+import org.jetbrains.kotlin.idea.util.application.runReadAction
+import org.jetbrains.kotlin.psi.KtPsiFactory
+import org.jetbrains.kotlin.tools.projectWizard.core.service.FileFormattingService
+import java.io.File
+
+class IdeaFileFormattingService(private val project: Project) : FileFormattingService, IdeaWizardService {
+    override fun formatFile(text: String, filename: String): String = runReadAction {
+        val psiFile = createPsiFile(text, filename) ?: return@runReadAction text
+        CodeStyleManager.getInstance(project).reformat(psiFile).text
+    }
+
+    private fun createPsiFile(text: String, filename: String) = when (File(filename.removeSuffix(".vm")).extension) {
+        "kt" -> KtPsiFactory(project).createFile(text)
+        else -> null
+    }
+}

idea/idea-new-project-wizard/src/org/jetbrains/kotlin/tools/projectWizard/wizard/service/IdeaWizardService.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.tools.projectWizard.wizard.service
 
 import com.intellij.openapi.module.ModifiableModuleModel
 import com.intellij.openapi.project.Project
+import org.jetbrains.kotlin.tools.projectWizard.core.service.FileFormattingService
 import org.jetbrains.kotlin.tools.projectWizard.core.service.WizardService
 
 interface IdeaWizardService : WizardService
@@ -20,7 +21,8 @@ object IdeaServices {
     fun createScopeDependent(project: Project, model: ModifiableModuleModel) = listOf(
         IdeaGradleWizardService(project),
         IdeaMavenWizardService(project),
-        IdeaJpsWizardService(project, model)
+        IdeaJpsWizardService(project, model),
+        IdeaFileFormattingService(project)
     )
 }