createGroup method

@override Future<AtGroup?> createGroup(AtGroup? atGroup)

takes AtGroup as an input and creates the group on success return AtGroup otherwise null

Implementation

@override
Future<AtGroup?> createGroup(AtGroup? atGroup) async {
  if (atGroup == null || atGroup.groupName == null) {
    throw Exception('Group name is null or empty String');
  }
  var id = atGroup.groupId;
  if (id != null) {
    var group = await getGroup(id);
    if (group != null) {
      throw AlreadyExistsException('Group is already exisits with id $id');
    }
  }
  //create groupID
  var groupId = Uuid().v1();
  atGroup.groupId = groupId;
  var groupName = atGroup.groupName;
  var atKey = _formKey(KeyType.group, key: groupId);

  //update atGroup
  atGroup.createdBy = AtUtils.fixAtSign(atSign);
  atGroup.updatedBy = AtUtils.fixAtSign(atSign);
  atGroup.createdOn = DateTime.now();
  atGroup.updatedOn = DateTime.now();

  var json = atGroup.toJson();
  var value = jsonEncode(json);
  var result = await atClient!.put(atKey, value);
  if (result) {
    print('Group creation successful. Adding to group list');
    var atGroupBasicInfo = AtGroupBasicInfo(groupId, groupName);
    // add AtGroupBasicInfo object to list of groupNames
    var success = await _addToGroupList(atGroupBasicInfo);
    print('Add to group list result : $success');
    return atGroup;
  }
  return null;
}