Initial commit

server.js

@@ -0,0 +1,40 @@
+import express from "express";
+import fs from "fs";
+import path from "path";
+import { fileURLToPath } from "url";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const app = express();
+app.use(express.json());
+app.use(express.static(path.join(__dirname, "public")));
+
+const stateFile = path.join(__dirname, "state.json");
+
+// Initialzustand laden oder erzeugen
+function getState() {
+  if (!fs.existsSync(stateFile)) {
+    fs.writeFileSync(stateFile, JSON.stringify({ current: "A" }, null, 2));
+  }
+  return JSON.parse(fs.readFileSync(stateFile));
+}
+
+function setState(newState) {
+  fs.writeFileSync(stateFile, JSON.stringify(newState, null, 2));
+}
+
+// GET: aktuellen Zustand
+app.get("/status", (req, res) => {
+  res.json(getState());
+});
+
+// POST: wechseln
+app.post("/toggle", (req, res) => {
+  const state = getState();
+  state.current = state.current === "A" ? "B" : "A";
+  setState(state);
+  res.json(state);
+});
+
+// Start
+const PORT = process.env.PORT || 3000;
+app.listen(PORT, () => console.log(`Zahl-Schalter läuft auf Port ${PORT}`));