getChat method
Получение данных чата.
См: urls.apiChatsGet, SjChatDto.
Implementation
Future<SjChatDto> getChat() async {
final result = await $httpPost(urls.apiChatsGet, {});
if (!result.containsKey('chats')) {
throw const FormatException('invalid response');
}
final res = result['chats'] as List;
return res.cast<Map>().map(SjChatDto.fromJson).first;
}