feat: implement AFK retry mechanism with teleport detection and logging

afk.js

@@ -31,6 +31,12 @@ const LOG_FILE = path.join(
   `afk-${toSafeFilePart(runtimeUsername)}.log`,
 );
 const TELEPORT_DETECT_REGEX = /you teleported to\b/i;
+const AFK_RETRY_DELAY_MS = 5000;
+const AFK_MIN_NUMBER = 1;
+const AFK_MAX_NUMBER = 50;
+
+let hasDetectedTeleport = false;
+let afkRetryTimer = null;
 
 // Logging
 function log(message) {
@@ -40,6 +46,35 @@ function log(message) {
   fs.appendFileSync(LOG_FILE, logMessage + "\n");
 }
 
+function getRandomIntInclusive(min, max) {
+  return Math.floor(Math.random() * (max - min + 1)) + min;
+}
+
+function clearAfkRetryTimer() {
+  if (afkRetryTimer) {
+    clearTimeout(afkRetryTimer);
+    afkRetryTimer = null;
+  }
+}
+
+function scheduleAfkRetryCheck() {
+  clearAfkRetryTimer();
+
+  afkRetryTimer = setTimeout(() => {
+    if (hasDetectedTeleport) return;
+
+    const randomNumber = getRandomIntInclusive(AFK_MIN_NUMBER, AFK_MAX_NUMBER);
+    const command = `/afk ${randomNumber}`;
+    log(
+      `No teleport detected after ${AFK_RETRY_DELAY_MS}ms; sending: ${command}`,
+    );
+    bot.chat(command);
+
+    // Keep checking every delay window until teleport is detected.
+    scheduleAfkRetryCheck();
+  }, AFK_RETRY_DELAY_MS);
+}
+
 function toPlainText(value) {
   if (value == null) return "";
   if (typeof value === "string") return value;
@@ -73,6 +108,12 @@ function logIfTeleport(source, text) {
   if (!normalized) return;
   if (!TELEPORT_DETECT_REGEX.test(normalized)) return;
   log(`Teleport detected from ${source}: ${normalized}`);
+
+  if (!hasDetectedTeleport) {
+    hasDetectedTeleport = true;
+    clearAfkRetryTimer();
+    log("Teleport confirmed; stopped AFK retry loop");
+  }
 }
 
 // Create bot
@@ -91,6 +132,8 @@ bot.on("login", () => {
 
 bot.on("spawn", () => {
   log("Bot spawned");
+  hasDetectedTeleport = false;
+  scheduleAfkRetryCheck();
 });
 
 bot.on("error", (err) => {
@@ -102,6 +145,7 @@ bot.on("kicked", (reason) => {
 });
 
 bot.on("end", () => {
+  clearAfkRetryTimer();
   log("Bot disconnected");
   process.exit(0);
 });
@@ -159,6 +203,7 @@ bot._client.on("set_subtitle_text", (packet) => {
 // Graceful shutdown
 process.on("SIGINT", () => {
   log("Shutdown signal received");
+  clearAfkRetryTimer();
   bot.quit();
 });