feat: Handler for getting all source paths

Fixes #142

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

@@ -40,6 +40,7 @@ class CopilotPluginUtil {
             REDO("redo"),
             REFRESH("refresh"),
             SHOW_IN_IDE("showInIde"),
+            GET_SOURCE_PATHS("getSourcePaths"),
         }
 
         private val pluginVersion = PluginManagerCore.getPlugin(PluginId.getId("com.vaadin.intellij-plugin"))?.version
@@ -63,6 +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)
                 else -> {
                     LOG.warn("Command $command not supported by plugin")
                     return object : Handler {

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

@@ -0,0 +1,23 @@
+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.JavaSourceRootType
+
+class GetSourcePathsHandler(project: Project) : AbstractHandler(project) {
+
+    override fun run(): HandlerResponse {
+        val sourcePaths = ArrayList<String>();
+        val testPaths = ArrayList<String>();
+        ModuleManager.getInstance(project).modules.forEach { module: Module ->
+            val moduleRootManager = ModuleRootManager.getInstance(module);
+            sourcePaths.addAll(moduleRootManager.getSourceRoots(JavaSourceRootType.SOURCE).map { it.path });
+            testPaths.addAll(moduleRootManager.getSourceRoots(JavaSourceRootType.TEST_SOURCE).map { it.path });
+        }
+        val data: Map<String, Any> = mapOf("sourcePaths" to sourcePaths, "testSourcePaths" to testPaths);
+        return HandlerResponse(HttpResponseStatus.OK, data);
+    }
+}

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

@@ -2,4 +2,4 @@ package com.vaadin.plugin.copilot.handler
 
 import io.netty.handler.codec.http.HttpResponseStatus
 
-data class HandlerResponse(val status: HttpResponseStatus, val data: Map<String, String>? = null)
+data class HandlerResponse(val status: HttpResponseStatus, val data: Map<String,Any>? = null)