nutshell-summarizer-extension/background.js at main · underd0se/nutshell-summarizer-extension · GitHub

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// background message router
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
  if (!message || !message.type) return;

  if (message.type === 'summarize') {
    sendResponse({ ok: false, error: 'summarizer-unavailable-in-bg' });
    return;
  }

  if (message.type === 'fetchPage') {
    (async () => {
      try {
        const resp = await fetch(message.url, { credentials: 'omit' });
        if (!resp.ok) {
          sendResponse({ ok: false, error: `fetch-failed:${resp.status}` });
          return;
        }
        const html = await resp.text();
        sendResponse({ ok: true, html });
      } catch (err) {
        sendResponse({ ok: false, error: err && err.message ? err.message : String(err) });
      }
    })();
    return true; // async
  }

  if (message.type === 'injectBridge') {
    try {
      const tabId = sender.tab && sender.tab.id;
      if (!tabId) {
        sendResponse({ ok: false, error: 'no-tab-id' });
        return;
      }
      chrome.scripting.executeScript(
        { target: { tabId }, files: ['summarizer-bridge.js'], world: 'MAIN' },
        (results) => {
          if (chrome.runtime.lastError) {
            sendResponse({ ok: false, error: chrome.runtime.lastError.message || 'inject-failed' });
            return;
          }
          sendResponse({ ok: true });
        }
      );
    } catch (err) {
      sendResponse({ ok: false, error: err && err.message ? err.message : String(err) });
    }
    return true;
  }

  if (message.type === 'setIconTheme') {
    try {
      const theme = message.theme === 'dark' ? 'dark' : 'light';
      const getIconPath = (prefix, size) => `icons/${prefix}-${size}.png`;
      const iconPaths = {
        16: getIconPath(theme === 'dark' ? 'nutshell-dark' : 'nutshell', 16),
        32: getIconPath(theme === 'dark' ? 'nutshell-dark' : 'nutshell', 32),
        48: getIconPath(theme === 'dark' ? 'nutshell-dark' : 'nutshell', 48),
        128: getIconPath(theme === 'dark' ? 'nutshell-dark' : 'nutshell', 128),
      };
      chrome.action.setIcon({ path: iconPaths }, () => {
        if (chrome.runtime.lastError) {
          sendResponse({ ok: false, error: chrome.runtime.lastError.message || 'set-icon-failed' });
          return;
        }
        sendResponse({ ok: true, theme });
      });
    } catch (err) {
      sendResponse({ ok: false, error: err && err.message ? err.message : String(err) });
    }
    return true;
  }
});