/**
* delete messages in cache
*
* - if the latest message on the cache has a different sequence number then on the imap server
* then some messages before the latest message(from the cache) got deleted
* we need to remove them from local cache first
*
* - $folder->cache_totalcount equals to the message sequence of the last message in the cache
*
* @param Felamimail_Model_Folder $_folder
* @param Felamimail_Backend_ImapProxy $_imap
*/
protected function _deleteMessagesInCache(Felamimail_Model_Folder $_folder, Felamimail_Backend_ImapProxy $_imap)
{
if ($this->_messagesDeletedOnIMAP($_folder)) {
$messagesToRemoveFromCache = $this->_cacheMessageSequence - $this->_imapMessageSequence;
if ($this->_initialCacheStatus == Felamimail_Model_Folder::CACHE_STATUS_COMPLETE || $this->_initialCacheStatus == Felamimail_Model_Folder::CACHE_STATUS_EMPTY) {
$_folder->cache_job_actions_est += $messagesToRemoveFromCache;
}
$_folder->cache_status = Felamimail_Model_Folder::CACHE_STATUS_INCOMPLETE;
if ($this->_timeElapsed < $this->_availableUpdateTime) {
$begin = $_folder->cache_job_startuid > 0 ? $_folder->cache_job_startuid : $_folder->cache_totalcount;
$firstMessageSequence = 0;
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . " {$messagesToRemoveFromCache} message to remove from cache. starting at {$begin}");
}
for ($i = $begin; $i > 0; $i -= $this->_importCountPerStep) {
$firstMessageSequence = $i - $this->_importCountPerStep >= 0 ? $i - $this->_importCountPerStep : 0;
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . " fetching from {$firstMessageSequence}");
}
$cachedMessageUids = $this->_getCachedMessageUidsChunked($_folder, $firstMessageSequence);
// $cachedMessageUids can be empty if we fetch the last chunk
if (count($cachedMessageUids) > 0) {
$messageUidsOnImapServer = $_imap->messageUidExists($cachedMessageUids);
$difference = array_diff($cachedMessageUids, $messageUidsOnImapServer);
$removedMessages = $this->_deleteMessagesByIdAndUpdateCounters(array_keys($difference), $_folder);
$messagesToRemoveFromCache -= $removedMessages;
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . " Cache status cache total count: {$_folder->cache_totalcount} imap total count: {$_folder->imap_totalcount} messages to remove: {$messagesToRemoveFromCache}");
}
if ($messagesToRemoveFromCache <= 0) {
$_folder->cache_job_startuid = 0;
$_folder->cache_status = Felamimail_Model_Folder::CACHE_STATUS_UPDATING;
break;
}
}
if (!$this->_timeLeft()) {
$_folder->cache_job_startuid = $i;
break;
}
}
if ($firstMessageSequence === 0) {
$_folder->cache_status = Felamimail_Model_Folder::CACHE_STATUS_UPDATING;
}
}
}
$this->_cacheMessageSequence = $_folder->cache_totalcount;
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . " Cache status cache total count: {$_folder->cache_totalcount} imap total count: {$_folder->imap_totalcount} cache sequence: {$this->_cacheMessageSequence} imap sequence: {$this->_imapMessageSequence}");
}
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . ' Folder cache status: ' . $_folder->cache_status);
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . ' Folder cache actions to be done yet: ' . ($_folder->cache_job_actions_est - $_folder->cache_job_actions_done));
}
