From 953b1f5fc3ddfdbc77d7b4d5604a7660ffd9bd3c Mon Sep 17 00:00:00 2001
From: KronosDP <darrel.danadyaksa19@gmail.com>
Date: Wed, 26 Feb 2025 13:48:25 +0700
Subject: [PATCH] [GREEN] Add OTPService for generating and verifying one-time
passwords
---
.../authentication/service/OTPService.java | 46 +++++++++++++++++++
1 file changed, 46 insertions(+)
create mode 100644 src/main/java/com/safetypin/authentication/service/OTPService.java
diff --git a/src/main/java/com/safetypin/authentication/service/OTPService.java b/src/main/java/com/safetypin/authentication/service/OTPService.java
new file mode 100644
index 0000000..ac9ee7d
--- /dev/null
+++ b/src/main/java/com/safetypin/authentication/service/OTPService.java
@@ -0,0 +1,46 @@
+package com.safetypin.authentication.service;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+import java.time.LocalDateTime;
+import java.util.Random;
+import java.util.concurrent.ConcurrentHashMap;
+
+@Service
+public class OTPService {
+
+ private static final long OTP_EXPIRATION_SECONDS = 120; // 2 minutes expiration
+ private static final Logger log = LoggerFactory.getLogger(OTPService.class);
+ private final ConcurrentHashMap<String, OTPDetails> otpStorage = new ConcurrentHashMap<>();
+ private final Random random = new Random();
+
+ public String generateOTP(String email) {
+ String otp = String.format("%06d", random.nextInt(1000000));
+ OTPDetails details = new OTPDetails(otp, LocalDateTime.now());
+ otpStorage.put(email, details);
+ // Simulate sending OTP via email (in production, integrate with an email service)
+ log.info("Sending OTP {} to {}", otp, email);
+ return otp;
+ }
+
+ public boolean verifyOTP(String email, String otp) {
+ OTPDetails details = otpStorage.get(email);
+ if (details == null) {
+ return false;
+ }
+ // Check if OTP has expired
+ if (details.generatedAt().plusSeconds(OTP_EXPIRATION_SECONDS).isBefore(LocalDateTime.now())) {
+ otpStorage.remove(email);
+ return false;
+ }
+ if (details.otp().equals(otp)) {
+ otpStorage.remove(email);
+ return true;
+ }
+ return false;
+ }
+
+ private record OTPDetails(String otp, LocalDateTime generatedAt) {
+ }
+}
--
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