URL Extension to Create Query Parameter

URL+Extension.swift

extension URL {
  
  /*
   Get the query parameters from the URL.
   */
  var queryParameters: [String: String]? {
    var params = [String: String]()
    return URLComponents(url: self, resolvingAgainstBaseURL: false)?
      .queryItems?
      .reduce([:], { (_, item) -> [String: String] in
        params[item.name] = item.value
        return params
      })
  }
  
}