diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..01f409b70 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,10 +1,118 @@
-function setAlarm() {}
+let countdownInterval = null;
+let flashInterval = null;
+let timeRemainingElement = null;
+
+let timeRemaining = 0;
+let isPaused = false;
+
+function formatTime(totalSeconds) {
+ const minutes = Math.floor(totalSeconds / 60);
+ const seconds = totalSeconds % 60;
+
+ const padMinutes = String(minutes).padStart(2, "0");
+ const padSeconds = String(seconds).padStart(2, "0");
+
+ return `${padMinutes}:${padSeconds}`;
+}
+
+function updateDisplay(ptimeRemaining) {
+ if (timeRemainingElement) {
+ timeRemainingElement.innerText = `Time Remaining: ${formatTime(ptimeRemaining)}`;
+ }
+}
+
+function startFlashingBackground() {
+ let isRed = false;
+ flashInterval = setInterval(() => {
+ document.body.style.backgroundColor = isRed ? "#ffffff" : "#ff4d4d";
+ isRed = !isRed;
+ }, 500);
+}
+
+function stopFlashingBackground() {
+ if (flashInterval) {
+ clearInterval(flashInterval);
+ flashInterval = null;
+ }
+ document.body.style.backgroundColor = "";
+}
+
+function setAlarm() {
+ const alarmInput = document.getElementById("alarmSet");
+
+ // If currently paused, resume countdown
+ if (isPaused) {
+ isPaused = false;
+ startCountdown();
+ return;
+ }
+
+ // If an active alarm is already running, toggle pause state
+ if (countdownInterval !== null) {
+ isPaused = true;
+ clearInterval(countdownInterval);
+ countdownInterval = null;
+ return;
+ }
+
+ // Read time from input field
+ const inputSeconds = parseInt(alarmInput.value, 10);
+ if (isNaN(inputSeconds) || inputSeconds <= 0) {
+ alert("Please enter a valid number of seconds.");
+ return;
+ }
+
+ timeRemaining = inputSeconds;
+ stopFlashingBackground();
+ updateDisplay(timeRemaining);
+ startCountdown();
+}
+
+function startCountdown() {
+ // Clear any existing timer before starting a new one
+ if (countdownInterval) {
+ clearInterval(countdownInterval);
+ }
+
+ countdownInterval = setInterval(() => {
+ timeRemaining -= 1;
+ updateDisplay(timeRemaining);
+
+ if (timeRemaining <= 0) {
+ clearInterval(countdownInterval);
+ countdownInterval = null;
+ playAlarm();
+ startFlashingBackground();
+ }
+ }, 1000);
+}
+
+// Override pauseAlarm to also clear screen effects and reset timers
+const originalPauseAlarm = pauseAlarm;
+pauseAlarm = function () {
+ if (typeof originalPauseAlarm === "function") {
+ originalPauseAlarm();
+ } else {
+ audio.pause();
+ }
+
+ // Reset state
+ if (countdownInterval) {
+ clearInterval(countdownInterval);
+ countdownInterval = null;
+ }
+ isPaused = false;
+ stopFlashingBackground();
+};
// DO NOT EDIT BELOW HERE
var audio = new Audio("alarmsound.mp3");
function setup() {
+
+ timeRemainingElement = document.getElementById("timeRemaining");
+
document.getElementById("set").addEventListener("click", () => {
setAlarm();
});
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..5a3801414 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -4,7 +4,7 @@
- Title here
+ Alarm Clock App