function for alarm clock

Author: mshayriyesaricicek

Sprint-3/alarmclock/alarmclock.js

@@ -1,4 +1,48 @@
 function setAlarm() {}
+// Only define Audio if it doesn't exist (Node environment)
+if (typeof Audio === "undefined") {
+  global.Audio = class {
+    constructor(src) {
+      this.src = src;
+    }
+    play() {}
+    pause() {}
+  };
+}
+
+let intervalId;
+
+const formatTime = (s) => {
+  const mins = Math.floor(s / 60);
+  const secs = s % 60;
+  return `${String(mins).padStart(2, "0")}:${String(secs).padStart(2, "0")}`;
+};
+
+function setAlarm() {
+  const input = document.getElementById("alarmSet");
+  const timer = document.getElementById("timeRemaining");
+
+  const seconds = parseInt(input.value);
+  if (isNaN(seconds) || seconds < 0) return;
+
+  let remaining = seconds;
+
+  // DO NOT EDIT BELOW HERE
+  timer.textContent = `Time Remaining: ${formatTime(remaining)}`;
+
+  if (intervalId) clearInterval(intervalId);
+
+  intervalId = setInterval(() => {
+    remaining--;
+
+    timer.textContent = `Time Remaining: ${formatTime(remaining)}`;
+
+    if (remaining <= 0) {
+      clearInterval(intervalId);
+      playAlarm();
+    }
+  }, 1000);
+}
 
 // DO NOT EDIT BELOW HERE