MISC: enhance code step 4 (flatten packages & merge kotlin files)

app/src/main/java/io/neoterm/component/data.kt

@@ -0,0 +1,64 @@
+package io.neoterm.component
+
+import io.neolang.visitor.ConfigVisitor
+import io.neoterm.component.config.ConfigureComponent
+import io.neoterm.utils.NLog
+import java.io.File
+import java.io.FileFilter
+
+interface ConfigFileBasedObject {
+  @Throws(RuntimeException::class)
+  fun onConfigLoaded(configVisitor: ConfigVisitor)
+}
+
+abstract class ConfigFileBasedComponent<out T : ConfigFileBasedObject>(protected val baseDir: String) : NeoComponent {
+  companion object {
+    private val TAG = ConfigFileBasedComponent::class.java.simpleName
+
+    val NEOLANG_FILTER = FileFilter {
+      it.extension == "nl"
+    }
+  }
+
+  open val checkComponentFileWhenObtained = false
+
+  override fun onServiceInit() {
+    val baseDirFile = File(this.baseDir)
+    if (!baseDirFile.exists()) {
+      if (!baseDirFile.mkdirs()) {
+        throw RuntimeException("Cannot create component config directory: ${baseDirFile.absolutePath}")
+      }
+    }
+    onCheckComponentFiles()
+  }
+
+  override fun onServiceDestroy() {
+  }
+
+  override fun onServiceObtained() {
+    if (checkComponentFileWhenObtained) {
+      onCheckComponentFiles()
+    }
+  }
+
+  fun loadConfigure(file: File): T? {
+    return try {
+      val loaderService = ComponentManager.getComponent<ConfigureComponent>()
+      val configure = loaderService.newLoader(file).loadConfigure()
+        ?: throw RuntimeException("Parse configuration failed.")
+
+      val configVisitor = configure.getVisitor()
+      val componentObject = onCreateComponentObject(configVisitor)
+      componentObject.onConfigLoaded(configVisitor)
+      componentObject
+    } catch (e: RuntimeException) {
+      NLog.e(TAG, "Failed to load config: ${file.absolutePath}: ${e.localizedMessage}")
+      null
+    }
+  }
+
+  abstract fun onCheckComponentFiles()
+
+  abstract fun onCreateComponentObject(configVisitor: ConfigVisitor): T
+}
+