public function actionIndex()
{
$params = $this->getQuery();
if (empty($params['memberId'])) {
throw new BadRequestHttpException(Yii::t('common', 'parameters_missing'));
}
//get members openIds
$member = Member::findByPk(new MongoId($params['memberId']));
$openIds = empty($member->socials) ? [] : ArrayHelper::getColumn($member->socials, 'openId');
$openIds[] = $member->openId;
//get lastChatDate
$lastConversation = ChatConversation::getLastByOpenIds($openIds);
$lastChatDate = empty($lastConversation) ? '' : $lastConversation->date;
//get conversations
$params['openIds'] = $openIds;
$accountId = $this->getAccountId();
$conversations = ChatConversation::search($params, $accountId);
$result = $this->serializeData($conversations);
$result['lastChatDate'] = $lastChatDate;
return $result;
}