groupRequests method

Future<Iterable<MapEntry<Request, Iterable<PhoneNumber>>>> groupRequests(Iterable<PhoneNumber> to, Message message)

Groups requests.

Group Chinese Mainland and international mobile phone numbers.

Implementation

Future<Iterable<MapEntry<http.Request, Iterable<PhoneNumber>>>> groupRequests(
    Iterable<PhoneNumber> to, Message message) async {
  final groups = <bool, Set<PhoneNumber>>{
    true: to.where((phone) => isChineseMainland(phone)).toSet(),
    false: to.where((phone) => !isChineseMainland(phone)).toSet(),
  };

  final resutls = groups.entries.map((e) async {
    final url = await generateRequestUrl(e.value, message, e.key);
    final request = http.Request('GET', url);

    return MapEntry(request, e.value);
  });

  return Future.wait(resutls);
}