// content.js
// This script runs on the web app page (e.g. localhost:5173)

console.log('Tools App Extension: Content script injected');

// Listen for messages from the Web App (Vue)
window.addEventListener('message', (event) => {
  // We should verify the origin, but since we are running on the page itself, we trust window messages
  // from our own app.
  if (event.source !== window) return;

  if (event.data.type && event.data.type === 'TOOLS_APP_INIT') {
    // console.log('Tools App Extension: Received init from Web App');
    window.postMessage({ type: 'TOOLS_APP_EXTENSION_READY', version: '1.0' }, '*');
  }

  // Heartbeat check
  if (event.data.type === 'TOOLS_APP_PING') {
    try {
      // Only respond if the extension context is still valid
      if (chrome.runtime && chrome.runtime.id) {
        window.postMessage({ type: 'TOOLS_APP_PONG' }, '*');
      }
    } catch (e) {
      // Extension context invalidated
      // console.warn('Extension context invalidated during ping');
    }
  }

  // Example: Receive request to sniff clipboard
  if (event.data.type === 'TOOLS_APP_START_SNIFFING') {
    // console.log('Tools App Extension: Start sniffing request');
    // Relay to background script
    try {
      chrome.runtime.sendMessage({ action: 'startSniffing' });
    } catch (e) {
      console.warn('Tools App Extension: Connection lost, please reload the page', e);
    }
  }

  if (event.data.type === 'TOOLS_APP_STOP_SNIFFING') {
    // console.log('Tools App Extension: Stop sniffing request');
    try {
      chrome.runtime.sendMessage({ action: 'stopSniffing' });
    } catch (e) {
      // ignore
    }
  }

  if (event.data.type === 'TOOLS_APP_CLIPBOARD_WRITE') {
    try {
      chrome.runtime.sendMessage({ 
        action: 'writeClipboard',
        content: event.data.content
      });
    } catch (e) {
      console.warn('Tools App Extension: Write clipboard failed', e);
    }
  }
});

// Listen for messages from the Extension Background
try {
  chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
    if (request.action === 'clipboardUpdate') {
      // Send to Web App
      window.postMessage({ type: 'TOOLS_APP_CLIPBOARD_UPDATE', content: request.content }, '*');
    }

    // Respond to background ping to confirm we are alive
    if (request.action === 'ping') {
      sendResponse('pong');
    }
  });
} catch (e) {
  console.warn('Tools App Extension: Could not add listener', e);
}