From be8fbab1f213b81a45f05dd68c202e28a2064129 Mon Sep 17 00:00:00 2001
From: Sandani Kannangara <sandz.kannangara@gmail.com>
Date: Tue, 21 Jul 2026 20:48:41 +0100
Subject: [PATCH 1/2] Implement alarm clock countdown functionality

---
 Sprint-3/alarmclock/alarmclock.js | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..88d810bca 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,4 +1,31 @@
-function setAlarm() {}
+const alarmTime = document.querySelector("#alarmSet");
+const timeRemaining = document.querySelector("#timeRemaining");
+let remainingSeconds;
+
+function setAlarm() {
+  remainingSeconds = Number(alarmTime.value);
+  displayTimeRemaining();
+
+  let timer = setInterval(() => {
+    remainingSeconds--;
+    displayTimeRemaining();
+    if (remainingSeconds === 0) {
+      clearInterval(timer);
+      window.playAlarm();
+    }
+  }, 1000);
+}
+
+function displayTimeRemaining() {
+  let minutes = Math.floor(remainingSeconds / 60);
+  let seconds = remainingSeconds % 60;
+  const formatTime =
+    minutes.toString().padStart(2, "0") +
+    ":" +
+    seconds.toString().padStart(2, "0");
+
+  timeRemaining.textContent = `Time Remaining: ${formatTime}`;
+}
 
 // DO NOT EDIT BELOW HERE
 

From 3d71ce8c576c94bd5a82b9693298c9ee32a72596 Mon Sep 17 00:00:00 2001
From: Sandani Kannangara <sandz.kannangara@gmail.com>
Date: Mon, 27 Jul 2026 19:41:16 +0100
Subject: [PATCH 2/2] Fix alarm timer handling and input validation

---
 Sprint-3/alarmclock/alarmclock.js | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 88d810bca..3dab42d65 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,18 +1,32 @@
-const alarmTime = document.querySelector("#alarmSet");
-const timeRemaining = document.querySelector("#timeRemaining");
+const alarmTime = document.getElementById("alarmSet");
+const timeRemaining = document.getElementById("timeRemaining");
 let remainingSeconds;
+let timer;
 
 function setAlarm() {
+  pauseAlarm();
+
   remainingSeconds = Number(alarmTime.value);
+
+  if (!Number.isFinite(remainingSeconds) || remainingSeconds <= 0) {
+    alert("Please enter a valid number.");
+    return;
+  }
+
   displayTimeRemaining();
 
-  let timer = setInterval(() => {
+  timer = setInterval(() => {
     remainingSeconds--;
-    displayTimeRemaining();
-    if (remainingSeconds === 0) {
+
+    if (remainingSeconds <= 0) {
+      remainingSeconds = 0;
+      displayTimeRemaining();
       clearInterval(timer);
       window.playAlarm();
+      return;
     }
+
+    displayTimeRemaining();
   }, 1000);
 }
 
@@ -46,6 +60,7 @@ function playAlarm() {
 }
 
 function pauseAlarm() {
+  clearInterval(timer);
   audio.pause();
 }