fix: return source path information per module

src/main/kotlin/com/vaadin/plugin/copilot/CopilotPluginUtil.kt

@@ -40,7 +40,7 @@ class CopilotPluginUtil {
             REDO("redo"),
             REFRESH("refresh"),
             SHOW_IN_IDE("showInIde"),
-            GET_SOURCE_PATHS("getSourcePaths"),
+            GET_MODULE_PATHS("getModulePaths"),
         }
 
         private val pluginVersion = PluginManagerCore.getPlugin(PluginId.getId("com.vaadin.intellij-plugin"))?.version
@@ -64,7 +64,7 @@ class CopilotPluginUtil {
                 HANDLERS.REDO.command -> return RedoHandler(project, data)
                 HANDLERS.SHOW_IN_IDE.command -> return ShowInIdeHandler(project, data)
                 HANDLERS.REFRESH.command -> return RefreshHandler(project)
-                HANDLERS.GET_SOURCE_PATHS.command -> return GetSourcePathsHandler(project)
+                HANDLERS.GET_MODULE_PATHS.command -> return GetModulePathsHandler(project)
                 else -> {
                     LOG.warn("Command $command not supported by plugin")
                     return object : Handler {

src/main/kotlin/com/vaadin/plugin/copilot/handler/GetModulePathsHandler.kt

@@ -0,0 +1,45 @@
+package com.vaadin.plugin.copilot.handler
+
+import com.intellij.openapi.module.Module
+import com.intellij.openapi.module.ModuleManager
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.roots.ModuleRootManager
+import io.netty.handler.codec.http.HttpResponseStatus
+import org.jetbrains.jps.model.java.JavaResourceRootType
+import org.jetbrains.jps.model.java.JavaSourceRootType
+
+class GetModulePathsHandler(project: Project) : AbstractHandler(project) {
+
+    @JvmRecord
+    data class ModuleInfo(
+        val name: String,
+        val contentRoots: Array<String>,
+        val javaSourcePaths: Array<String>,
+        val javaTestSourcePaths: Array<String>,
+        val resourcePaths: Array<String>,
+        val testResourcePaths: Array<String>
+    )
+
+    override fun run(): HandlerResponse {
+        val modules = ArrayList<ModuleInfo>()
+        ModuleManager.getInstance(project).modules.forEach { module: Module ->
+            val moduleRootManager = ModuleRootManager.getInstance(module)
+            val contentRoots = moduleRootManager.contentRoots.map { it.path }
+            // Note that the JavaSourceRootType.SOURCE also includes Kotlin source folders
+            val javaSourcePaths = moduleRootManager.getSourceRoots(JavaSourceRootType.SOURCE).map { it.path }
+            val javaTestSourcePaths = moduleRootManager.getSourceRoots(JavaSourceRootType.TEST_SOURCE).map { it.path }
+            val resourcePaths = moduleRootManager.getSourceRoots(JavaResourceRootType.RESOURCE).map { it.path }
+            val testResourcePaths = moduleRootManager.getSourceRoots(JavaResourceRootType.TEST_RESOURCE).map { it.path }
+            modules.add(
+                ModuleInfo(
+                    module.name,
+                    contentRoots.toTypedArray(),
+                    javaSourcePaths.toTypedArray(),
+                    javaTestSourcePaths.toTypedArray(),
+                    resourcePaths.toTypedArray(),
+                    testResourcePaths.toTypedArray()))
+        }
+        val data = mapOf("modules" to modules)
+        return HandlerResponse(HttpResponseStatus.OK, data)
+    }
+}