Update background.js

background.js

@@ -1,19 +1,53 @@
-chrome.runtime.onInstalled.addListener(() => {
-  chrome.storage.sync.set({frequency: '440'});
-});
+let audioContext;
+let oscillatorLeft;
+let oscillatorRight;
+let gainNode;
+let isPlaying = false;
 
-chrome.tabs.onUpdated.addListener((tabId, changeInfo, tab) => {
-  if (changeInfo.status === 'complete' && /^http/.test(tab.url)) {
-    chrome.scripting.executeScript({
-      target: {tabId: tabId},
-      files: ['binauralGenerator.js']
-    });
-  }
-});
+function startBinauralBeats(frequency, delta, volume) {
+    if (audioContext) {
+        audioContext.close();
+    }
 
-chrome.action.onClicked.addListener((tab) => {
-  chrome.scripting.executeScript({
-    target: {tabId: tab.id},
-    files: ['binauralGenerator.js']
-  });
-});
+    audioContext = new AudioContext();
+
+    oscillatorLeft = audioContext.createOscillator();
+    oscillatorRight = audioContext.createOscillator();
+    gainNode = audioContext.createGain();
+
+    oscillatorLeft.frequency.setValueAtTime(frequency, audioContext.currentTime);
+    oscillatorRight.frequency.setValueAtTime(frequency + delta, audioContext.currentTime);
+
+    gainNode.gain.setValueAtTime(volume, audioContext.currentTime);
+
+    oscillatorLeft.connect(gainNode);
+    oscillatorRight.connect(gainNode);
+    gainNode.connect(audioContext.destination);
+
+    oscillatorLeft.start();
+    oscillatorRight.start();
+
+    isPlaying = true;
+}
+
+function stopBinauralBeats() {
+    if (oscillatorLeft) {
+        oscillatorLeft.stop();
+    }
+    if (oscillatorRight) {
+        oscillatorRight.stop();
+    }
+    isPlaying = false;
+}
+
+chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
+    if (message.action === 'togglePlayPause') {
+        if (isPlaying) {
+            stopBinauralBeats();
+            sendResponse({ status: 'paused' });
+        } else {
+            startBinauralBeats(message.frequency, message.delta, message.volume);
+            sendResponse({ status: 'playing' });
+        }
+    }
+});