fix: dummyFunction properly fails when backend isn't running

backend/pythonMethods/dummyFunction.ts

@@ -1,4 +1,9 @@
 import { server } from "./server";
-export function dummyFunction() {
-  return server!.callPluginMethod<{}, boolean>("dummy_function", {});
+export async function dummyFunction() {
+  try {
+    return await server!.callPluginMethod<{}, boolean>("dummy_function", {});
+  } catch {
+    // If backend is not running, fetch fails
+    return false;
+  }
 }

backend/tauriMethods/startBackend.ts

@@ -1,12 +1,16 @@
 import { Command } from "@tauri-apps/api/shell";
+import { dummyFunction } from "backend/pythonMethods";
 export async function startBackend(onClose: any = () => {}) {
-  const command = new Command("startBackend", [
-    "Start-Process",
-    "-FilePath",
-    "([Environment]::GetFolderPath('Startup')",
-    "+",
-    "'\\CssLoader-Standalone-Headless.exe')",
-  ]);
-  command.on("close", onClose);
-  await command.spawn();
+  const isRunning = await dummyFunction();
+  if (!isRunning) {
+    const command = new Command("startBackend", [
+      "Start-Process",
+      "-FilePath",
+      "([Environment]::GetFolderPath('Startup')",
+      "+",
+      "'\\CssLoader-Standalone-Headless.exe')",
+    ]);
+    command.on("close", onClose);
+    await command.spawn();
+  }
 }

pages/_app.tsx

@@ -68,7 +68,7 @@ export default function App(AppProps: AppProps) {
   async function dummyFuncTest() {
     return dummyFunction()
       .then((data) => {
-        if (data.success) {
+        if (data && data.success) {
           setDummyResult(data.result);
           return true;
         }