const IFRAME_SELECTOR = 'iframe[title="Hoofdinhoud"]';
const CELL_SELECTOR =
  'a[title="Sectie uitvouwen Algemene opleidingsonderdelen"]';

/**
 * Extracted function to get the text content of a node.
 * @param {ElementHandle} node - The node to get the text content from.
 * @returns {Promise<string>} The text content of the node.
 */
async function getNodeTextContent(node) {
  return await node.evaluate((node) => node.textContent);
}

/**
 * Extracted function to retrieve the content frame.
 * @param {Page} page - The Puppeteer page object.
 * @returns {Promise<Frame>} The content frame.
 */
async function getContentFrame(page) {
  await page.waitForSelector(IFRAME_SELECTOR);
  const iframe = await page.$(IFRAME_SELECTOR);
  if (!iframe) {
    throw new Error("Could not find iframe on the AA-page");
  }
  console.log("iframe found on AA-page");
  return await iframe.contentFrame();
}

/**
 * Checks if the 'Startpakket' is available by verifying text content in a cell
 * and the `aria-expanded` attribute.
 *
 * @param {Page} page - The Puppeteer page object.
 * @returns {Promise<boolean>} True if the 'Startpakket' is available, false otherwise.
 */
async function isStartPakketAvailable(page) {
  const contentFrame = await getContentFrame(page);
  await contentFrame.waitForSelector(CELL_SELECTOR);
  const cell = await contentFrame.$(CELL_SELECTOR);

  if (!cell) {
    throw new Error(
      "Cell inside function isStartPakketAvailable is not defined"
    );
  }

  const isCollapsed = await isAriaExpandedFalse(cell);

  console.log(`Aria-expanded: ${isCollapsed}`);

  return {
    isCollapsed: isCollapsed,
    // Add more properties here in the future as needed
  };
}

/**
 * Checks if the given cell node has an `aria-expanded` attribute with a value of 'false'.
 *
 * @param {ElementHandle} node - The node to check the `aria-expanded` attribute.
 * @returns {Promise<boolean>} True if the `aria-expanded` attribute is 'false', false otherwise.
 */
async function isAriaExpandedFalse(node) {
  if (!node) {
    throw new Error("Node is not defined");
  }
  return await node.evaluate(
    (element) => element.getAttribute("aria-expanded") === "false"
  );
}

module.exports = isStartPakketAvailable;