/**
 * Injects the content scripts into the active tab to enable Kintone helper functionality
 * @param {Object} tab - The active tab object from Chrome API
 * @returns {Promise<void>} Resolves when all scripts are injected successfully
 */
const injectKintoneHelperScripts = async (tab) => {
  const scriptFiles = ['fields.js', 'dom.js', 'main.js'];

  try {
    // Inject all scripts in parallel for better performance
    await Promise.all(
      scriptFiles.map(file =>
        chrome.scripting.executeScript({
          target: { tabId: tab.id },
          files: [file],
          world: 'MAIN',
        })
      )
    );

    console.log('Kintone helper scripts injected successfully');
  } catch (error) {
    console.error('Failed to inject Kintone helper scripts:', error);
    throw error; // Re-throw to allow caller to handle if needed
  }
};

/**
 * Handles the extension action click event
 * @param {Object} tab - The active tab that triggered the action
 */
const handleActionClick = async (tab) => {
  try {
    await injectKintoneHelperScripts(tab);
  } catch (error) {
    // Error already logged in injectKintoneHelperScripts
    // Could add user notification here if needed
  }
};

// Register the click handler for the browser action
chrome.action.onClicked.addListener(handleActionClick);