/**
* fetch mails to parse and/or store
*
* @return void
*/
public function fetchMails()
{
$statusArray = array('added' => array(), 'exists' => array(), 'failed' => array());
$mailboxId = $this->attribute('id');
$mailboxDeleteMailsFromServer = (bool) $this->attribute('delete_mails_from_server');
if (is_object($this->TransportObject)) {
$transport = $this->TransportObject;
try {
// it is possible that not all pop3 server understand this
// array( message_num => unique_id );
// array( 1 => '000001fc4420e93a', 2 => '000001fd4420e93a' );
$uniqueIdentifierArray = $transport->listUniqueIdentifiers();
} catch (Exception $e) {
$uniqueIdentifiers = false;
CjwNewsletterLog::writeError('CjwNewsletterMailbox::fetchMails', 'mailbox', 'listUniqueIdentifiers-failed', array('error-code' => $e->getMessage()));
}
try {
// array( message_id => message_size );
// array( 2 => 1700, 5 => 1450 );
$messageIdArray = $transport->listMessages();
} catch (Exception $e) {
$messageIdNumbers = false;
CjwNewsletterLog::writeError('CjwNewsletterMailbox::fetchMails', 'mailbox', 'listMessages-failed', array('error-code' => $e->getMessage()));
}
// array( message_id => message_identifier )
$messageNumberArray = array();
// only fetch messages from server which are not in the db
// use message_identifier for check
$existingMessageIdentifierArray = $this->extractAllExistingIdentifiers($uniqueIdentifierArray);
foreach ($messageIdArray as $messageId => $messageSize) {
if (isset($uniqueIdentifierArray[$messageId])) {
$uniqueIdentifier = $uniqueIdentifierArray[$messageId];
} else {
$uniqueIdentifier = false;
}
if (array_key_exists($uniqueIdentifier, $existingMessageIdentifierArray)) {
$statusArray['exists'][$messageId] = $uniqueIdentifier;
} else {
$messageNumberArray[$messageId] = $uniqueIdentifier;
}
}
if (count($messageNumberArray) > 0) {
// only fetch x item at once to avoid script timeout ... if call from admin frontend
// the cronjob may be has other settings
$fetchLimit = 50;
$counter = 0;
foreach ($messageNumberArray as $messageId => $messageIdentifier) {
if ($counter >= $fetchLimit) {
break;
} else {
// create mailobject from message id
// $mailboxDeleteMailsFromServer == true, set delete flag for current message
$mailObject = $transport->fetchByMessageNr($messageId, $mailboxDeleteMailsFromServer);
// convert mailobject to string with own function
$messageString = $this->convertMailToString($mailObject);
if ($messageIdentifier === false) {
$messageIdentifier = 'cjwnl_' . md5($messageString);
}
// if messageString has content
if ($messageString != null) {
// add item to DB / Filesystem
$addResult = CjwNewsletterMailboxItem::addMailboxItem($mailboxId, $messageIdentifier, $messageId, $messageString);
if (is_object($addResult)) {
$statusArray['added'][$messageId] = $messageIdentifier;
} else {
$statusArray['exists'][$messageId] = $messageIdentifier;
}
unset($addResult);
} else {
$statusArray['failed'][$messageId] = $messageIdentifier;
}
unset($messageString);
unset($mailObject);
}
$counter++;
}
// delete messages with delete flag from mailbox
switch ($this->attribute('type')) {
case 'imap':
$transport->expunge();
break;
}
} else {
return $statusArray;
}
}
return $statusArray;
}
