Context::handleEvent

static function handleEvent(array $arEvent)
{
	if(!isset($arEvent['FIELDS']) && isset($arEvent['C_FIELDS']))
		$arEvent['FIELDS'] = $arEvent['C_FIELDS'];

	if(!is_array($arEvent['FIELDS']))
		throw new MainArgumentTypeException("FIELDS" );

	$flag = static::SEND_RESULT_TEMPLATE_NOT_FOUND; // no templates
	$arResult = array(
		"Success" => false,
		"Fail" => false,
		"Was" => false,
		"Skip" => false,
	);

	$trackRead = null;
	$trackClick = null;
	if(array_key_exists('TRACK_READ', $arEvent))
		$trackRead = $arEvent['TRACK_READ'];
	if(array_key_exists('TRACK_CLICK', $arEvent))
		$trackClick = $arEvent['TRACK_CLICK'];

	$arSites = explode(",", $arEvent["LID"]);
	if(empty($arSites))
	{
		return $flag;
	}

	// get charset and server name for languages of event
	// actually it's one of the sites (let it be the first one)
	$charset = false;
	$serverName = null;

	static $sites = array();
	$infoSite = reset($arSites);

	if(!isset($sites[$infoSite]))
	{
		$siteDb = MainSiteTable::getList(array(
			'select' => array('SERVER_NAME', 'CULTURE_CHARSET'=>'CULTURE.CHARSET'),
			'filter' => array('=LID' => $infoSite)
		));
		$sites[$infoSite] = $siteDb->fetch();
	}

	if(is_array($sites[$infoSite]))
	{
		$charset = $sites[$infoSite]['CULTURE_CHARSET'];
		$serverName = $sites[$infoSite]['SERVER_NAME'];
	}

	if(!$charset)
	{
		return $flag;
	}

	// get filter for list of message templates
	$arEventMessageFilter = array();
	$MESSAGE_ID = intval($arEvent["MESSAGE_ID"]);
	if($MESSAGE_ID > 0)
	{
		$eventMessageDb = MailInternalEventMessageTable::getById($MESSAGE_ID);
		if($eventMessageDb->Fetch())
		{
			$arEventMessageFilter['=ID'] = $MESSAGE_ID;
			$arEventMessageFilter['=ACTIVE'] = 'Y';
		}
	}
	if(empty($arEventMessageFilter))
	{
		$arEventMessageFilter = array(
			'=ACTIVE' => 'Y',
			'=EVENT_NAME' => $arEvent["EVENT_NAME"],
			'=EVENT_MESSAGE_SITE.SITE_ID' => $arSites,
		);

		if($arEvent["LANGUAGE_ID"] <> '')
		{
			$arEventMessageFilter[] = array(
				"LOGIC" => "OR",
				array("=LANGUAGE_ID" => $arEvent["LANGUAGE_ID"]),
				array("=LANGUAGE_ID" => null),
			);
		}
	}

	// get list of message templates of event
	$messageDb = MailInternalEventMessageTable::getList(array(
		'select' => array('ID'),
		'filter' => $arEventMessageFilter,
		'group' => array('ID')
	));

	while($arMessage = $messageDb->fetch())
	{
		$eventMessage = MailInternalEventMessageTable::getRowById($arMessage['ID']);

		$eventMessage['FILE'] = array();
		$attachmentDb = MailInternalEventMessageAttachmentTable::getList(array(
			'select' => array('FILE_ID'),
			'filter' => array('=EVENT_MESSAGE_ID' => $arMessage['ID']),
		));
		while($arAttachmentDb = $attachmentDb->fetch())
		{
			$eventMessage['FILE'][] = $arAttachmentDb['FILE_ID'];
		}

		$context = new Context();
		$arFields = $arEvent['FIELDS'];

		foreach (GetModuleEvents("main", "OnBeforeEventSend", true) as $event)
		{
			if(ExecuteModuleEventEx($event, array(&$arFields, &$eventMessage, $context, &$arResult)) === false)
			{
				continue 2;
			}
		}

		// get message object for send mail
		$arMessageParams = array(
			'EVENT' => $arEvent,
			'FIELDS' => $arFields,
			'MESSAGE' => $eventMessage,
			'SITE' => $arSites,
			'CHARSET' => $charset,
		);
		$message = EventMessageCompiler::createInstance($arMessageParams);
		try
		{
			$message->compile();
		}
		catch(StopException $e)
		{
			$arResult["Was"] = true;
			$arResult["Fail"] = true;
			continue;
		}

		// send mail
		$result = MainMailMail::send(array(
			'TO' => $message->getMailTo(),
			'SUBJECT' => $message->getMailSubject(),
			'BODY' => $message->getMailBody(),
			'HEADER' => $message->getMailHeaders(),
			'CHARSET' => $message->getMailCharset(),
			'CONTENT_TYPE' => $message->getMailContentType(),
			'MESSAGE_ID' => $message->getMailId(),
			'ATTACHMENT' => $message->getMailAttachment(),
			'TRACK_READ' => $trackRead,
			'TRACK_CLICK' => $trackClick,
			'LINK_PROTOCOL' => ConfigOption::get("main", "mail_link_protocol", ''),
			'LINK_DOMAIN' => $serverName,
			'CONTEXT' => $context,
		));
		if($result)
			$arResult["Success"] = true;
		else
			$arResult["Fail"] = true;

		$arResult["Was"] = true;
	}

	if($arResult["Was"])
	{
		if($arResult["Success"])
		{
			if($arResult["Fail"])
				$flag = static::SEND_RESULT_PARTLY; // partly sent
			else
				$flag = static::SEND_RESULT_SUCCESS; // all sent
		}
		else
		{
			if($arResult["Fail"])
				$flag = static::SEND_RESULT_ERROR; // all templates failed
		}
	}
	elseif($arResult["Skip"])
	{
		$flag = static::SEND_RESULT_NONE; // skip this event
	}

	return $flag;
}