const combineUrls = (piece1: string, piece2: string): string => {
  let baseElement = piece1;
  if (baseElement.endsWith("/")) baseElement = baseElement.substring(0, baseElement.length - 1);
  return baseElement + piece2;
};

const isValidURL = (str: string): boolean => {
  const pattern = new RegExp(
    "^(https?:\\/\\/)?" + // protocol
      "((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|" + // domain name
      "((\\d{1,3}\\.){3}\\d{1,3}))" + // OR ip (v4) address
      "(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*" + // port and path
      "(\\?[;&a-z\\d%_.~+=-]*)?" + // query string
      "(\\#[-a-z\\d_]*)?$",
    "i"
  ); // fragment locater
  return !!pattern.test(str);
};

export { combineUrls, isValidURL };