TQ - URL Parsing Validator

validator.js

// parsing a URL for a GitHub repository link like so:
// https://github.com/twilioquest/twilioquest-extension-template

module.exports = async function (helper) {
  const { userUrl } = helper.validationFields;

  let parsedUserUrl;

  try {
    parsedUserUrl = new URL(userUrl);
  } catch (err) {
    return helper.fail(`
    "${userUrl}" is not a valid URL.
    `);
  }

  if (!parsedUserUrl.hostname.toLowerCase().includes("github.com")) {
    return helper.fail(`
    "${userUrl}" is not a Github URL.
    `);
  }

  const partsOfPathName = parsedUserUrl.pathname.toLowerCase().split("/");
  // const [, user, repository] = partsOfPathname;
  const user = partsOfPathName[1];
  const repository = partsOfPathName[2]

  if (user !== "twilioquest") {
    return helper.fail(`
    "${userUrl}" is not owned by TwilioQuest!
    `);
  }

  if (!repository) {
    return helper.fail(`
    "${userUrl}" does not contain a repository link!
    `);
  }

  let avatar_url;

  try {
    const response = await fetch(
      `https://api.github.com/users/${user}`
    ).then((response) => response.json());

    avatar_url = response.avatar_url;
  } catch (err) {
    console.log(`Failed to request profile image for "${user}"`);
  }

  return helper.success(`
  We found the repository "${repository}" owned by "${user}"!

  <img src="${avatar_url}" alt="User's profile image" />
  `);
};