Emergency Stop

public/app.js

@@ -21,11 +21,13 @@ const loginBtn = document.getElementById("login-btn");
 const loginSubmit = document.getElementById("login-submit");
 const loginMsg = document.getElementById("login-msg");
 const nav = document.getElementById("services");
+const estopBtn = document.getElementById("emergency-stop");
 
 const usernameInput = document.getElementById("username");
 const passwordInput = document.getElementById("password");
 
 let loggedIn = false;
+let armedPollInterval = null;
 
 // ===========================
 // Login anzeigen
@@ -57,6 +59,8 @@ function switchToLogout() {
 // ===========================
 function performLocalLogout() {
     loggedIn = false;
+    stopArmedPolling();
+    estopBtn.style.display = "none";
     iframe.src = "";
     iframe.style.display = "none";
     nav.innerHTML = "";
@@ -64,6 +68,46 @@ function performLocalLogout() {
     switchToLogin();
 }
 
+// ===========================
+// Armed-Status prüfen
+// ===========================
+async function updateArmedStatus() {
+    try {
+        const r = await fetch('https://robotDriver.server.schooltech.ch/api/power-status');
+        if (r.ok) {
+            const data = await r.json();
+            estopBtn.style.display = data.armed ? "block" : "none";
+        } else {
+            estopBtn.style.display = "none";
+        }
+    } catch (e) {
+        estopBtn.style.display = "none";
+    }
+}
+
+function startArmedPolling() {
+    updateArmedStatus();
+    armedPollInterval = setInterval(updateArmedStatus, 5000);
+}
+
+function stopArmedPolling() {
+    if (armedPollInterval) {
+        clearInterval(armedPollInterval);
+        armedPollInterval = null;
+    }
+}
+
+// ===========================
+// Emergency Stop
+// ===========================
+estopBtn.addEventListener("click", async () => {
+    try {
+        await fetch('https://robotDriver.server.schooltech.ch/api/emergency-stop', { method: 'POST' });
+    } catch (e) {
+        console.error('E-Stop request failed:', e);
+    }
+});
+
 // ===========================
 // Login-Logik
 // ===========================
@@ -84,6 +128,7 @@ async function doLogin() {
             loginMsg.textContent = "";
             setupServiceButtons();
             switchToLogout();
+            startArmedPolling();
         } else {
             loginMsg.textContent = "Login fehlgeschlagen";
         }
@@ -156,6 +201,7 @@ function openService(svc) {
             loggedIn = true;
             setupServiceButtons();
             switchToLogout();
+            startArmedPolling();
         } else {
             switchToLogin();
         }