Getting Message Threads, modfied after [date] - php

Question

The Why?
I'm playing around with the GMAIL api, for a minor project at work
The Wanted Result
What I'm trying to get from the Gmail API, is all message threads modfied after a certain timestamp/date.
What do i have so far
So far i manage to get all threads created after a certain date - by using the standart gmail search queries see - https://support.google.com/mail/answer/7190.
The Problem
It's great i can get all the Message Threads after a certain date, but the problem is when i have my queried set as:
after:[todays date - 7 days)
This will show me all Message Threads, up to 7 days ago - but what when i have a Message Thread, created 8 days ago and still getting updated?. What is my best option to get all message threads, modified from now to 7 days ago?
Checking all message threads, all the time is not an option :)
The code
$client = getClient();
$oService = new Google_Service_Gmail($client);
$sUser = 'me';
$tsMailsAfter = '1554280000';
$sIn = 'INBOX';
//before;, after:, in:(inbox, sent)
$aThreads = getlistThread($oService, $sUser, 'after:'.$tsMailsAfter.' in:'.$sIn);
function getlistThread($service, $userId, $aQuery = '')
{
$threads = array();
$pageToken = NULL;
do
{
try
{
$opt_param = array();
if ($pageToken)
{
$opt_param['pageToken'] = $pageToken;
}
$opt_param['q'] = $aQuery;
$threadsResponse = $service->users_threads->listUsersThreads($userId, $opt_param);
if($threadsResponse->getThreads())
{
$threads = array_merge($threads, $threadsResponse->getThreads());
$pageToken = $threadsResponse->getNextPageToken();
}
}
catch (Exception $e)
{
print 'An error occurred: ' . $e->getMessage();
$pageToken = NULL;
}
}
while ($pageToken);
return $threads;
}

Answer 1

i solved my issue by just using a search query (with :after) on ->listUsersMessages() and then collecting the ID's in an array(). Its not the most optimal solution, having a search query :modified_after would be the best solution - this solution defiantly works for my purpose:)
function listThreadsToUpdate($service, $userId, $sQuery = '')
{
$pageToken = NULL;
$messages = array();
$opt_param = array();
do
{
try
{
if ($pageToken)
{
$opt_param['pageToken'] = $pageToken;
}
$opt_param['q'] = $sQuery;
$messagesResponse = $service->users_messages->listUsersMessages($userId, $opt_param);
if ($messagesResponse->getMessages())
{
$aMessages = array_merge($messages, $messagesResponse->getMessages());
$pageToken = $messagesResponse->getNextPageToken();
}
}
catch (Exception $e)
{
print 'An error occurred: ' . $e->getMessage();
}
} while ($pageToken);
$aThreadsToUpdate = array();
if(isset($aMessages) && !empty($aMessages))
{
foreach ($aMessages as $oMessage)
{
$aThreadsToUpdate[] = $oMessage->getThreadId();
}
}
return array_unique($aThreadsToUpdate);
}