export const getLocation = (href: string) => {
  const match = href.match(
    // eslint-disable-next-line no-useless-escape
    /^([a-z][\w-]+\:)\/\/(([^:\/?#]*)(?:\:([0-9]+))?)([\/]{0,1}[^?#]*)(\?[^#]*|)(#.*|)$/,
  );
  if (!match) {
    throw new Error('Invalid URL');
  }

  let search = match[6];
  let hash = match[7];

  if (hash) {
    const splits = hash.split('?');
    if (splits.length === 2) {
      hash = splits[0];
      search = splits[1];
    }
  }

  if (search.startsWith('?')) {
    search = search.slice(1);
  }

  return (
    match && {
      href,
      protocol: match[1],
      host: match[2],
      hostname: match[3],
      port: match[4],
      path: match[5],
      search,
      hash,
    }
  );
};

export const getPath = (href: string) => {
  const location = getLocation(href);
  let { path } = location;

  if (path.endsWith('/')) {
    path = path.slice(0, -1);
  }
  let { hash } = location;

  if (hash === '#_=_') {
    hash = '';
  }

  if (hash) {
    path += hash;
  }

  return path;
};

export const getParseQueryStringFromLocation = (href: string) => {
  const location = getLocation(href);
  const { search } = location;

  return parseQueryString(search);
};

const parseQueryString = (queryString: string) => {
  const params: any = {};
  let temp;
  let i;
  let l;

  // Split into key/value pairs
  const queries = queryString.split('&');

  // Convert the array of strings into an object
  for (i = 0, l = queries.length; i < l; i++) {
    temp = queries[i].split('=');
    params[decodeURIComponent(temp[0])] = decodeURIComponent(temp[1]);
  }

  return params;
};