added a jest.config.js file

Author: Fithi-Teklom

Sprint-3/alarmclock/alarmclock.js

@@ -1,4 +1,81 @@
-function setAlarm() {}
+
+
+// function setAlarm() {}
+
+let timeLeft = 0;
+let timer = null;
+let flashing = null;
+
+// DOM references
+const display = document.getElementById("timeRemaining");
+const setButton = document.getElementById("set");
+const stopButton = document.getElementById("stop");
+
+// Event listeners
+setButton.addEventListener("click", setAlarm);
+stopButton.addEventListener("click", stopAlarm);
+
+// Show 00:00 on load
+updateDisplay(0);
+
+// -------------------------------
+// FUNCTIONS
+// -------------------------------
+
+function setAlarm() {
+  const input = document.getElementById("alarmSet").value;
+  const parsed = parseInt(input, 10);
+
+  if (isNaN(parsed) || parsed < 0) return;
+
+  timeLeft = parsed;
+
+  // Update display immediately
+  updateDisplay(timeLeft);
+
+  // Clear previous countdown
+  clearInterval(timer);
+
+  // Start countdown every 1000ms
+  timer = setInterval(() => {
+    if (timeLeft > 0) {
+      timeLeft--;
+      updateDisplay(timeLeft);
+    }
+
+    if (timeLeft === 0) {
+      clearInterval(timer);
+      startAlarm();
+    }
+  }, 1000);
+}
+
+function updateDisplay(seconds) {
+  const mins = String(Math.floor(seconds / 60)).padStart(2, "0");
+  const secs = String(seconds % 60).padStart(2, "0");
+  display.innerText = `Time Remaining: ${mins}:${secs}`;
+}
+
+function startAlarm() {
+  if (typeof playAlarm === "function") playAlarm();
+
+  // Flashing background
+  flashing = setInterval(() => {
+    document.body.style.backgroundColor =
+      document.body.style.backgroundColor === "red" ? "orange" : "red";
+  }, 300);
+}
+
+function stopAlarm() {
+  if (typeof pauseAlarm === "function") pauseAlarm();
+
+  clearInterval(flashing);
+  flashing = null;
+  document.body.style.backgroundColor = "";
+}
+
+module.exports= setAlarm;
+
 
 // DO NOT EDIT BELOW HERE
 

Sprint-3/alarmclock/alarmclock.test.js

@@ -35,6 +35,8 @@ afterEach(() => {
   page = null;
 });
 
+
+
 test("should set heading when button is clicked", () => {
   const heading = page.window.document.querySelector("#timeRemaining");
   const input = page.window.document.querySelector("#alarmSet");

Sprint-3/alarmclock/jest.config.js

@@ -0,0 +1,6 @@
+/** @type {import('jest').Config} */
+module.exports = {
+  testEnvironment: "jsdom",
+  verbose: true,
+  testMatch: ["**/*.test.js"],
+};