background.js

// Background service worker for UX Analyzer extension

console.log('Background script starting...');

// Handle extension icon clicks
chrome.action.onClicked.addListener((tab) => {
  console.log('Extension icon clicked for tab:', tab.id);
  
  // Simple injection without async/await for better compatibility
  chrome.scripting.executeScript({
    target: { tabId: tab.id },
    files: ['content.js']
  }, () => {
    if (chrome.runtime.lastError) {
      console.error('Script injection failed:', chrome.runtime.lastError);
      return;
    }
    
    console.log('Content script injected successfully');
    
    // Send message to toggle overlay
    chrome.tabs.sendMessage(tab.id, { action: 'toggleOverlay' }, (response) => {
      if (chrome.runtime.lastError) {
        console.error('Message sending failed:', chrome.runtime.lastError);
      } else {
        console.log('Message sent successfully');
      }
    });
  });
});

// Handle messages from content scripts
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
  console.log('Received message:', message);
  sendResponse({ success: true });
});

console.log('Background script loaded and listeners attached');