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2026-08-14 22:46:02 +05:30
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+/**
+ * Copyright (c) 2026 Niolla
+ * All rights reserved.
+ *
+ * This source code is proprietary and confidential.
+ * Unauthorized copying, modification, distribution, or use
+ * of this file, via any medium, is strictly prohibited.
+ */
+
+// app/utils/otp.util.js
+
+const otpCache = new Map();
+
+function generateOTP(key){
+    const otp = Math.floor(100000 + Math.random() * 900000).toString();
+    saveOTP(key, otp);
+    return otp;
+}
+
+function saveOTP(key, otp, ttl = 5 * 60 * 1000) { // default TTL: 5 mins
+  const expiresAt = Date.now() + ttl;
+  otpCache.set(key, { otp, expiresAt });
+}
+
+// Validate OTP
+function validateOTP(key, otp) {
+  const record = otpCache.get(key);
+  if (!record) return false;
+  if (Date.now() > record.expiresAt) {
+    otpCache.delete(key);
+    return false;
+  }
+  const isValid = record.otp === otp;
+  if (isValid) otpCache.delete(key); // OTP can be used only once
+  return isValid;
+}
+
+module.exports = { generateOTP, validateOTP };