[Editor] Enable creating and filling class with predefined FTL templates on project and class creation

editor/build.gradle

@@ -47,6 +47,7 @@ dependencies {
 
     // Spring
     implementation 'org.springframework.boot:spring-boot-starter'
+    implementation 'org.springframework.boot:spring-boot-starter-freemarker'
 }
 
 task provideGameEngine(type: Copy) {

editor/src/main/kotlin/com/bartlomiejpluta/base/editor/code/service/JavaClassService.kt

@@ -0,0 +1,49 @@
+package com.bartlomiejpluta.base.editor.code.service
+
+import com.bartlomiejpluta.base.editor.file.model.FileSystemNode
+import com.bartlomiejpluta.base.editor.project.context.ProjectContext
+import freemarker.template.Configuration
+import freemarker.template.TemplateExceptionHandler
+import freemarker.template.Version
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.stereotype.Component
+import java.io.File
+import java.nio.file.Path
+import java.util.*
+
+@Component
+class JavaClassService {
+
+   @Autowired
+   private lateinit var projectContext: ProjectContext
+
+   private val config = Configuration(Version(2, 3, 20)).apply {
+      defaultEncoding = "UTF-8"
+      locale = Locale.US
+      templateExceptionHandler = TemplateExceptionHandler.RETHROW_HANDLER
+      setClassForTemplateLoading(this.javaClass, "/java_templates/")
+   }
+
+   fun toPathString(className: String) = toPath(className).toString() + ".java"
+   fun toPath(className: String) = Path.of("", *className.split(".").toTypedArray())
+
+   fun ofPath(path: String): String = ofPath(Path.of(path))
+   fun ofPath(path: Path): String = path.joinToString(".")
+
+   fun createClassFile(name: String, directory: FileSystemNode, classTemplate: String) {
+      projectContext.project?.let { project ->
+         val template = config.getTemplate(classTemplate)
+
+         val className = name.substringAfterLast(".")
+         val classFile = File(directory.file, toPath(name).toString() + ".java")
+         val classPackage = ofPath(
+            File(directory.file, toPath(name).toString()).parentFile.relativeTo(project.codeFSNode.file).toPath()
+         )
+
+         project.codeFSNode.createNode(classFile.toRelativeString(project.codeFSNode.file))
+
+         val model = mapOf("className" to className, "package" to classPackage)
+         template.process(model, classFile.writer())
+      }
+   }
+}

editor/src/main/kotlin/com/bartlomiejpluta/base/editor/code/view/list/ScriptFilesView.kt

@@ -2,7 +2,9 @@ package com.bartlomiejpluta.base.editor.code.view.list
 
 import com.bartlomiejpluta.base.editor.code.api.APIProvider
 import com.bartlomiejpluta.base.editor.code.component.ScriptFileTreeCell
+import com.bartlomiejpluta.base.editor.code.service.JavaClassService
 import com.bartlomiejpluta.base.editor.file.model.FileNode
+import com.bartlomiejpluta.base.editor.file.model.FileSystemNode
 import com.bartlomiejpluta.base.editor.file.model.FileType
 import com.bartlomiejpluta.base.editor.file.model.PseudoFileNode
 import com.bartlomiejpluta.base.editor.main.controller.MainController
@@ -15,11 +17,11 @@ import tornadofx.View
 import tornadofx.expandAll
 import tornadofx.populate
 import tornadofx.treeview
-import java.io.File
 
 class ScriptFilesView : View() {
    private val projectContext: ProjectContext by di()
    private val mainController: MainController by di()
+   private val javaClassService: JavaClassService by di()
    private val apiProvider: APIProvider by di()
 
    init {
@@ -64,7 +66,11 @@ class ScriptFilesView : View() {
          title = "New class"
       }
          .showAndWait()
-         .map { it.replace(".", File.separator) + ".java" }
+         .map {
+            javaClassService.createClassFile(it, fsNode as FileSystemNode, "empty_class.ftl")
+            it
+         }
+         .map(javaClassService::toPathString)
          .map { fsNode.createNode(it) }
          .ifPresent { mainController.openScript(it) }
    }

editor/src/main/kotlin/com/bartlomiejpluta/base/editor/main/controller/MainController.kt

@@ -38,8 +38,7 @@ class MainController : Controller() {
       find<ProjectSettingsFragment>().apply {
          onComplete {
             openItems.clear()
-            projectContext.project = it
-            projectContext.save()
+            projectContext.createNewProject(it)
          }
 
          openModal(block = true, resizable = false)

editor/src/main/kotlin/com/bartlomiejpluta/base/editor/map/model/brush/Brush.kt

@@ -64,7 +64,7 @@ class Brush {
       }
    }
 
-   private fun getTileByMode(tile: Tile) = when (mode) {
+   private fun getTileByMode(tile: Tile) = when (mode!!) {
       BrushMode.PAINTING_MODE -> tile
       BrushMode.ERASING_MODE -> null
    }

editor/src/main/kotlin/com/bartlomiejpluta/base/editor/project/context/DefaultProjectContext.kt

@@ -3,6 +3,7 @@ package com.bartlomiejpluta.base.editor.project.context
 import com.bartlomiejpluta.base.editor.asset.model.Asset
 import com.bartlomiejpluta.base.editor.code.model.Code
 import com.bartlomiejpluta.base.editor.code.model.CodeType
+import com.bartlomiejpluta.base.editor.code.service.JavaClassService
 import com.bartlomiejpluta.base.editor.file.model.FileNode
 import com.bartlomiejpluta.base.editor.image.asset.ImageAsset
 import com.bartlomiejpluta.base.editor.image.asset.ImageAssetData
@@ -45,6 +46,9 @@ class DefaultProjectContext : ProjectContext {
    @Autowired
    private lateinit var mapDeserializer: MapDeserializer
 
+   @Autowired
+   private lateinit var javaClassService: JavaClassService
+
    override val projectProperty = SimpleObjectProperty<Project?>() as ObjectProperty<Project?>
    override var project by projectProperty
 
@@ -72,6 +76,13 @@ class DefaultProjectContext : ProjectContext {
          .let { project = it }
    }
 
+   override fun createNewProject(project: Project) {
+      this.project = project
+      save()
+
+      javaClassService.createClassFile(project.runner, project.codeFSNode, "game_runner.ftl")
+   }
+
    override fun importMap(name: String, map: GameMap) {
       project?.let {
          UID.next(it.maps.map(Asset::uid)).let { uid ->

editor/src/main/kotlin/com/bartlomiejpluta/base/editor/project/context/ProjectContext.kt

@@ -19,6 +19,7 @@ interface ProjectContext {
 
    fun save()
    fun open(file: File)
+   fun createNewProject(project: Project)
 
    fun importMap(name: String, map: GameMap)
    fun loadMap(uid: String): GameMap

editor/src/main/resources/application.yml

@@ -1,3 +1,7 @@
 logging:
   level:
     com.bartlomiejpluta.base.editor: DEBUG
+
+spring:
+  freemarker:
+    checkTemplateLocation: false

editor/src/main/resources/java_templates/empty_class.ftl

@@ -0,0 +1,5 @@
+package ${package};
+
+public class ${className} {
+
+}

editor/src/main/resources/java_templates/game_runner.ftl

@@ -0,0 +1,5 @@
+package ${package};
+
+public class ${className} {
+
+}