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<?php
/**
 * This code is licensed under AGPLv3 license or Afterlogic Software License
 * if commercial version of the product was purchased.
 * For full statements of the licenses see LICENSE-AFTERLOGIC and LICENSE-AGPL3 files.
 */

namespace Aurora\Modules\Mail\Classes;

/**
 * Message class summary
 * 
 * @license https://www.gnu.org/licenses/agpl-3.0.html AGPL-3.0
 * @license https://afterlogic.com/products/common-licensing Afterlogic Software License
 * @copyright Copyright (c) 2019, Afterlogic Corp.
 * 
 * @package Mail
 * @subpackage Classes
 */
class Message
{
	/**
	 * Raw full name of the folder the message resides in.
	 * 
	 * @var string
	 */
	protected $sFolder;

	/**
	 * UID value of the message.
	 * 
	 * @var int
	 */
	protected $iUid;

	/**
	 * Subject of the message.
	 * 
	 * @var string
	 */
	protected $sSubject;

	/**
	 * Value of Message-ID header.
	 * 
	 * @var string
	 */
	protected $sMessageId;

	/**
	 * Content-Type value of the message.
	 * 
	 * @var string
	 */
	protected $sContentType;

	/**
	 * Message size in bytes.
	 * 
	 * @var int
	 */
	protected $iSize;

	/**
	 * Total size of text parts of the message in bytes. 
	 * 
	 * @var int
	 */
	protected $iTextSize;
	
	protected $bTruncated;

	/**
	 * Timestamp information of the message in UTC/GMT. 
	 * 
	 * @var int
	 */
	protected $iInternalTimeStampInUTC;

	/**
	 * UTC timestamp of the message, checking through various sources including Received and Date headers. 
	 * 
	 * @var int
	 */
	protected $iReceivedOrDateTimeStampInUTC;

	/**
	 * List of message flags.
	 * 
	 * @var array
	 */
	protected $aFlags;

	/**
	 * List of message flags converted to lower case.
	 * 
	 * @var array
	 */
	protected $aFlagsLowerCase;

	/**
	 * List of From addresses in the message. Though in most cases it's just one address, it's possible to have multiple From entries in the same message. 
	 * 
	 * @var \MailSo\Mime\EmailCollection
	 */
	protected $oFrom;

	/**
	 * List of Sender addresses in the message. Though in most cases it's just one address, it's possible to have multiple Sender entries in the same message. 
	 * 
	 * @var \MailSo\Mime\EmailCollection
	 */
	protected $oSender;

	/**
	 * Value of Reply-To header.
	 * 
	 * @var \MailSo\Mime\EmailCollection
	 */
	protected $oReplyTo;

	/**
	 * List of To addresses of the message.
	 * 
	 * @var \MailSo\Mime\EmailCollection
	 */
	protected $oTo;

	/**
	 * List of CC addresses of the message.
	 * 
	 * @var \MailSo\Mime\EmailCollection
	 */
	protected $oCc;

	/**
	 * List of BCC addresses of the message.
	 * 
	 * @var \MailSo\Mime\EmailCollection
	 */
	protected $oBcc;

	/**
	 * Value of **In-Reply-To** header which is supplied in replies/forwards and contains Message-ID of the original message. This approach allows for organizing threads. 
	 * 
	 * @var string
	 */
	protected $sInReplyTo;

	/**
	 * Content of References header block of the message. 
	 * 
	 * @var string
	 */
	protected $sReferences;

	/**
	 * Plaintext body of the message. 
	 * 
	 * @var string
	 */
	protected $sPlain;

	/**
	 * HTML body of the message.
	 * 
	 * @var string
	 */
	protected $sHtml;

	/**
	 * If Sensitivity header was set for the message, its value will be returned: 1 for "Confidential", 2 for "Private", 3 for "Personal". 
	 * 
	 * @var int
	 */
	protected $iSensitivity;

	/**
	 * Importance value of the message, from 1 (highest) to 5 (lowest).
	 * 
	 * @var int
	 */
	protected $iImportance;

	/**
	 * Email address reading confirmation is to be sent to. 
	 * 
	 * @var string
	 */
	protected $sReadingConfirmation;

	/**
	 * Indication of whether the sender is trustworthy so it's safe to display external images.
	 * 
	 * @var bool
	 */
	protected $bSafety;

	/**
	 * Information about attachments of the message.
	 * 
	 * @var \Aurora\Modules\Mail\Classes\AttachmentCollection
	 */
	protected $oAttachments;

	/**
	 * Information about the original message which is replied or forwarded: message type (reply/forward), UID and folder. 
	 * 
	 * @var array
	 */
	private $aDraftInfo;

	/**
	 * List of custom content, implemented for use of iCal/vCard content.
	 * 
	 * @var array
	 */
	private $aExtend;

	/**
	 * List of custom values in message object, implemented for use by plugins. 
	 * 
	 * @var array
	 */
	private $aCustom;

	/**
	 * Threading information such as UIDs of messages in the thread. 
	 * 
	 * @var array
	 */
	private $aThreads;

	/**
	 * @return void
	 */
	protected function __construct()
	{
		$this->clear();
	}

	/**
	 * Clears all the properties of the message.
	 * 
	 * @return Message
	 */
	public function clear()
	{
		$this->sFolder = '';
		$this->iUid = 0;
		$this->sSubject = '';
		$this->sMessageId = '';
		$this->sContentType = '';
		$this->iSize = 0;
		$this->iTextSize = 0;
		$this->iInternalTimeStampInUTC = 0;
		$this->iReceivedOrDateTimeStampInUTC = 0;
		$this->aFlags = array();
		$this->aFlagsLowerCase = array();

		$this->oFrom = null;
		$this->oSender = null;
		$this->oReplyTo = null;
		$this->oTo = null;
		$this->oCc = null;
		$this->oBcc = null;

		$this->sInReplyTo = '';
		$this->sReferences = '';

		$this->sHeaders = '';
		$this->sPlain = '';
		$this->sHtml = '';

		$this->iSensitivity = \MailSo\Mime\Enumerations\Sensitivity::NOTHING;
		$this->iImportance = \MailSo\Mime\Enumerations\MessagePriority::NORMAL;
		$this->bSafety = false;
		$this->sReadingConfirmation = '';

		$this->oAttachments = null;
		$this->aDraftInfo = null;
		$this->aExtend = null;
		$this->aCustom = array();

		$this->aThreads = array();

		return $this;
	}

	/**
	 * Creates a new instance of the object. 
	 * 
	 * @return Message
	 */
	public static function createEmptyInstance()
	{
		return new self();
	}

	/**
	 * Returns block of headers of the message.
	 * 
	 * @return string
	 */
	public function getHeaders()
	{
		return $this->sHeaders;
	}

	/**
	 * Allows for joining custom content to mail message, implemented for use of iCal/vCard content.
	 * 
	 * @param string $sName Name of the custom content.
	 * @param mixed $mValue Value of the custom content.
	 *
	 * @return Message
	 */
	public function addExtend($sName, $mValue)
	{
		if (!is_array($this->aExtend))
		{
			$this->aExtend = array();
		}

		$i = 0;
		while (isset($this->aExtend[$sName]))
		{
			$sName .= $i;
			$i++;
		}
		
		$this->aExtend[$sName] = $mValue;
		
		return $this;
	}

	/**
	 * Returns value set with **addExtend** method. 
	 * 
	 * @param string $sName Extended value to be looked up.
	 *
	 * @return mixed
	 */
	public function getExtend($sName)
	{
		return isset($this->aExtend[$sName]) ? $this->aExtend[$sName] : null;
	}

	/**
	 * Allows for adding custom values to message object, implemented for use by plugins. 
	 * 
	 * @param string $sName Name of custom data.
	 * @param mixed $mValue Value of custom data.
	 *
	 * @return Message
	 */
	public function addCustom($sName, $mValue)
	{
		$this->aCustom[$sName] = $mValue;

		return $this;
	}

	/**
	 * Returns a list of values set with **addCustom** method. 
	 * 
	 * @return array
	 */
	public function getCustomList()
	{
		return $this->aCustom;
	}

	/**
	 * Returns plaintext body of the message. 
	 * 
	 * @return string
	 */
	public function getPlain()
	{
		return $this->sPlain;
	}

	/**
	 * Returns HTML body of the message.
	 * 
	 * @return string
	 */
	public function getHtml()
	{
		return $this->sHtml;
	}

	/**
	 * Raw full name of the folder the message resides in.
	 * 
	 * @return string
	 */
	public function getFolder()
	{
		return $this->sFolder;
	}

	/**
	 * UID value of the message.
	 * 
	 * @return int
	 */
	public function getUid()
	{
		return $this->iUid;
	}

	/**
	 * Value of Message-ID header.
	 * 
	 * @return string
	 */
	public function getMessageId()
	{
		return $this->sMessageId;
	}

	/**
	 * Subject of the message.
	 * 
	 * @return string
	 */
	public function getSubject()
	{
		return $this->sSubject;
	}

	/**
	 * Content-Type value of the message.
	 * 
	 * @return string
	 */
	public function getContentType()
	{
		return $this->sContentType;
	}

	/**
	 * Message size in bytes.
	 * 
	 * @return int
	 */
	public function getSize()
	{
		return $this->iSize;
	}

	/**
	 * Total size of text parts of the message in bytes. 
	 * 
	 * @return int
	 */
	public function getTextSize()
	{
		return $this->iTextSize;
	}

	/**
	 * Returns timestamp information of the message in UTC/GMT. 
	 * 
	 * @return int
	 */
	public function getInternalTimeStamp()
	{
		return $this->iInternalTimeStampInUTC;
	}

	/**
	 * Returns UTC timestamp of the message, checking through various sources including Received and Date headers. 
	 * 
	 * @return int
	 */
	public function getReceivedOrDateTimeStamp()
	{
		return $this->iReceivedOrDateTimeStampInUTC;
	}

	/**
	 * Returns list of message flags.
	 * 
	 * @return array
	 */
	public function getFlags()
	{
		return $this->aFlags;
	}

	/**
	 * Returns list of message flags converted to lower case.
	 * 
	 * @return array
	 */
	public function getFlagsLowerCase()
	{
		return $this->aFlagsLowerCase;
	}

	/**
	 * List of From addresses in the message. Though in most cases it's just one address, it's possible to have multiple From entries in the same message. 
	 * 
	 * @return \MailSo\Mime\EmailCollection
	 */
	public function getFrom()
	{
		return $this->oFrom;
	}

	/**
	 * List of Sender addresses in the message. Though in most cases it's just one address, it's possible to have multiple Sender entries in the same message. 
	 * 
	 * @return \MailSo\Mime\EmailCollection
	 */
	public function getSender()
	{
		return $this->oSender;
	}

	/**
	 * Returns value of Reply-To header.
	 * 
	 * @return \MailSo\Mime\EmailCollection
	 */
	public function getReplyTo()
	{
		return $this->oReplyTo;
	}

	/**
	 * List of To addresses of the message.
	 * 
	 * @return \MailSo\Mime\EmailCollection
	 */
	public function getTo()
	{
		return $this->oTo;
	}

	/**
	 * List of CC addresses of the message.
	 * 
	 * @return \MailSo\Mime\EmailCollection
	 */
	public function getCc()
	{
		return $this->oCc;
	}

	/**
	 * List of BCC addresses of the message.
	 * 
	 * @return \MailSo\Mime\EmailCollection
	 */
	public function getBcc()
	{
		return $this->oBcc;
	}

	/**
	 * Returns value of *In-Reply-To* header which is supplied in replies/forwards and contains Message-ID of the original message. This approach allows for organizing threads. 
	 * 
	 * @return string
	 */
	public function getInReplyTo()
	{
		return $this->sInReplyTo;
	}

	/**
	 * Returns the content of References header block of the message. 
	 * 
	 * @return string
	 */
	public function getReferences()
	{
		return $this->sReferences;
	}

	/**
	 * If Sensitivity header was set for the message, its value will be returned: 1 for "Confidential", 2 for "Private", 3 for "Personal". 
	 * 
	 * @return int
	 */
	public function getSensitivity()
	{
		return $this->iSensitivity;
	}

	/**
	 * Returns importance value of the message, from 1 (highest) to 5 (lowest).
	 * 
	 * @return int
	 */
	public function getImportance()
	{
		return $this->iImportance;
	}

	/**
	 * The method returns indication of whether the sender is trustworthy so it's safe to display external images.
	 * 
	 * @return bool
	 */
	public function getSafety()
	{
		return $this->bSafety;
	}

	/**
	 * Returns email address reading confirmation is to be sent to. 
	 * 
	 * @return string
	 */
	public function getReadingConfirmation()
	{
		return $this->sReadingConfirmation;
	}

	/**
	 * The method allows for indication of whether the sender is trustworthy so it's safe to display external images. 
	 * 
	 * @param bool $bSafety If **true** displaying external images is allowed.
	 * 
	 * @return void
	 */
	public function setSafety($bSafety)
	{
		$this->bSafety = $bSafety;
	}

	/**
	 * Returns information about attachments of the message.
	 * 
	 * @return \Aurora\Modules\Mail\Classes\AttachmentCollection
	 */
	public function getAttachments()
	{
		return $this->oAttachments;
	}

	/**
	 * Contains information about the original message which is replied or forwarded: message type (reply/forward), UID and folder. 
	 * 
	 * @return array | null
	 */
	public function getDraftInfo()
	{
		return $this->aDraftInfo;
	}

	/**
	 * Threading information such as UIDs of messages in the thread. 
	 * 
	 * @return array
	 */
	public function getThreads()
	{
		return $this->aThreads;
	}

	/**
	 * Updates information about the message by supplying threading information such as UIDs of messages in the thread.
	 * 
	 * @param array $aThreads
	 */
	public function setThreads($aThreads)
	{
		$this->aThreads = \is_array($aThreads) ? $aThreads : array();
	}

	/**
	 * Creates and initializes instance of the object.
	 * 
	 * @param string $sRawFolderFullName Raw full name of the folder that contains the message.
	 * @param \MailSo\Imap\FetchResponse $oFetchResponse FetchResponse object.
	 * @param \MailSo\Imap\BodyStructure $oBodyStructure = null. BodyStructure object.
	 * @param string $sRfc822SubMimeIndex = ''. Index at which a message is taken to parse. Index is used if the message is another message attachment.
	 *
	 * @return Message
	 */
	public static function createInstance($sRawFolderFullName, $oFetchResponse, $oBodyStructure = null, $sRfc822SubMimeIndex = '', $bTruncated = false)
	{
		return self::createEmptyInstance()->initialize($sRawFolderFullName, $oFetchResponse, $oBodyStructure, $sRfc822SubMimeIndex, $bTruncated);
	}

	/**
	 * Advanced method which allows for creating messages invoking MailSo library built into the product. 
	 * 
	 * @param string $sRawFolderFullName Raw full name of the folder that contains the message.
	 * @param \MailSo\Imap\FetchResponse $oFetchResponse FetchResponse object.
	 * @param \MailSo\Imap\BodyStructure $oBodyStructure = null. BodyStructure object.
	 * @param string $sRfc822SubMimeIndex = ''. Index at which a message is taken to parse. Index is used if the message is another message attachment.
	 *
	 * @return Message
	 */
	protected function initialize($sRawFolderFullName, $oFetchResponse, $oBodyStructure = null, $sRfc822SubMimeIndex = '', $bTruncated = false)
	{
		if (!$oBodyStructure)
		{
			$oBodyStructure = $oFetchResponse->GetFetchBodyStructure();
		}

		$aTextParts = $oBodyStructure ? $oBodyStructure->SearchHtmlOrPlainParts() : array();
		
		$sUid = $oFetchResponse->GetFetchValue(\MailSo\Imap\Enumerations\FetchType::UID);
		$sSize = $oFetchResponse->GetFetchValue(\MailSo\Imap\Enumerations\FetchType::RFC822_SIZE);
		$sInternalDate = $oFetchResponse->GetFetchValue(\MailSo\Imap\Enumerations\FetchType::INTERNALDATE);
		$aFlags = $oFetchResponse->GetFetchValue(\MailSo\Imap\Enumerations\FetchType::FLAGS);

		$this->sFolder = $sRawFolderFullName;
		$this->iUid = is_numeric($sUid) ? (int) $sUid : 0;
		$this->iSize = is_numeric($sSize) ? (int) $sSize : 0;
		$this->iTextSize = 0;
		$this->bTruncated = $bTruncated;
		$this->aFlags = is_array($aFlags) ? $aFlags : array();
		$this->aFlagsLowerCase = array_map('strtolower', $this->aFlags);

		$this->iInternalTimeStampInUTC = \MailSo\Base\DateTimeHelper::ParseInternalDateString($sInternalDate);
		
		$sCharset = $oBodyStructure ? $oBodyStructure->SearchCharset() : '';
		$sCharset = \MailSo\Base\Utils::NormalizeCharset($sCharset);

		$this->sHeaders = trim($oFetchResponse->GetHeaderFieldsValue($sRfc822SubMimeIndex));
		if (!empty($this->sHeaders))
		{
			$oHeaders = \MailSo\Mime\HeaderCollection::NewInstance()->Parse($this->sHeaders, false, $sCharset);

			$sContentTypeCharset = $oHeaders->ParameterValue(
				\MailSo\Mime\Enumerations\Header::CONTENT_TYPE,
				\MailSo\Mime\Enumerations\Parameter::CHARSET
			);

			if (!empty($sContentTypeCharset))
			{
				$sCharset = $sContentTypeCharset;
				$sCharset = \MailSo\Base\Utils::NormalizeCharset($sCharset);
			}

			if (!empty($sCharset))
			{
				$oHeaders->SetParentCharset($sCharset);
			}

			$bCharsetAutoDetect = 0 === \strlen($sCharset);

			$this->sSubject = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::SUBJECT, $bCharsetAutoDetect);
			$this->sMessageId = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::MESSAGE_ID);
			$this->sContentType = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::CONTENT_TYPE);

			$this->setReceivedOrDateTimeStampInUTC($oHeaders);

			$this->oFrom = $oHeaders->GetAsEmailCollection(\MailSo\Mime\Enumerations\Header::FROM_, $bCharsetAutoDetect);
			$this->oTo = $oHeaders->GetAsEmailCollection(\MailSo\Mime\Enumerations\Header::TO_, $bCharsetAutoDetect);
			$this->oCc = $oHeaders->GetAsEmailCollection(\MailSo\Mime\Enumerations\Header::CC, $bCharsetAutoDetect);
			$this->oBcc = $oHeaders->GetAsEmailCollection(\MailSo\Mime\Enumerations\Header::BCC, $bCharsetAutoDetect);
			$this->oSender = $oHeaders->GetAsEmailCollection(\MailSo\Mime\Enumerations\Header::SENDER, $bCharsetAutoDetect);
			$this->oReplyTo = $oHeaders->GetAsEmailCollection(\MailSo\Mime\Enumerations\Header::REPLY_TO, $bCharsetAutoDetect);

			$this->sInReplyTo = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::IN_REPLY_TO);
			$this->sReferences = \preg_replace('/[\s]+/', ' ',
				$oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::REFERENCES));

			$this->setSensitivity($oHeaders);
			$this->setImportance($oHeaders);
			$this->setReadingConfirmation($oHeaders);
			$this->setDraftInfo($oHeaders);
		}

		if (is_array($aTextParts) && 0 < count($aTextParts))
		{
			if (0 === \strlen($sCharset))
			{
				$sCharset = \MailSo\Base\Enumerations\Charset::UTF_8;
			}
			
			$sHtmlParts = array();
			$sPlainParts = array();

			$iHtmlSize = 0;
			$iPlainSize = 0;
			foreach ($aTextParts as /* @var $oPart \MailSo\Imap\BodyStructure */ $oPart)
			{
				if ($oPart)
				{
					if ('text/html' === $oPart->ContentType())
					{
						$iHtmlSize += $oPart->EstimatedSize();
					}
					else
					{
						$iPlainSize += $oPart->EstimatedSize();
					}
				}

				$sText = $oFetchResponse->GetFetchValue(\MailSo\Imap\Enumerations\FetchType::BODY.'['.$oPart->PartID().
					('' !== $sRfc822SubMimeIndex && is_numeric($sRfc822SubMimeIndex) ? '.1' : '').']');

				if (is_string($sText) && 0 < strlen($sText))
				{
					$sTextCharset = $oPart->Charset();
					if (empty($sTextCharset))
					{
						$sTextCharset = $sCharset;
					}

					$sTextCharset = \MailSo\Base\Utils::NormalizeCharset($sTextCharset, true);

					$sText = \MailSo\Base\Utils::DecodeEncodingValue($sText, $oPart->MailEncodingName());
					$sText = \MailSo\Base\Utils::ConvertEncoding($sText, $sTextCharset, \MailSo\Base\Enumerations\Charset::UTF_8);
					$sText = \MailSo\Base\Utils::Utf8Clear($sText);

					if ('text/html' === $oPart->ContentType())
					{
						$sHtmlParts[] = $sText;
					}
					else
					{
						$sPlainParts[] = $sText;
					}
				}
			}

			if (0 < count($sHtmlParts))
			{
				$this->sHtml = trim(implode('<br />', $sHtmlParts));
				$this->iTextSize = strlen($this->sHtml);
			}
			else
			{
				$this->sPlain = trim(implode("\n", $sPlainParts));
				$this->iTextSize = strlen($this->sPlain);
			}

			if (0 === $this->iTextSize)
			{
				$this->iTextSize = 0 < $iHtmlSize ? $iHtmlSize : $iPlainSize;
			}

			unset($sHtmlParts, $sPlainParts);
		}

		if ($oBodyStructure)
		{
			$aAttachmentsParts = $oBodyStructure->SearchAttachmentsParts();
			if ($aAttachmentsParts && 0 < count($aAttachmentsParts))
			{
				$this->oAttachments = \Aurora\Modules\Mail\Classes\AttachmentCollection::createInstance();
				foreach ($aAttachmentsParts as /* @var $oAttachmentItem \MailSo\Imap\BodyStructure */ $oAttachmentItem)
				{
					$this->oAttachments->Add(
						\Aurora\Modules\Mail\Classes\Attachment::createInstance($this->sFolder, $this->iUid, $oAttachmentItem)
					);
				}
			}
		}

		return $this;
	}
	
	protected function setReceivedOrDateTimeStampInUTC($oHeaders)
	{
		$aReceived = $oHeaders->ValuesByName(\MailSo\Mime\Enumerations\Header::RECEIVED);
		$sReceived = !empty($aReceived[0]) ? trim($aReceived[0]) : '';

		$sDate = '';
		if (!empty($sReceived))
		{
			$aParts = explode(';', $sReceived);
			if (0 < count($aParts))
			{
				$aParts = array_reverse($aParts);
				foreach ($aParts as $sReceiveLine)
				{
					$sReceiveLine = trim($sReceiveLine);
					if (preg_match('/[\d]{4} [\d]{2}:[\d]{2}:[\d]{2} /', $sReceiveLine))
					{
						$sDate = $sReceiveLine;
						break;
					}
				}
			}
		}

		if (empty($sDate))
		{
			$sDate = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::DATE);
		}

		if (!empty($sDate))
		{
			$this->iReceivedOrDateTimeStampInUTC = \MailSo\Base\DateTimeHelper::ParseRFC2822DateString($sDate);
		}
	}
	
	protected function setSensitivity($oHeaders)
	{
		$this->iSensitivity = \MailSo\Mime\Enumerations\Sensitivity::NOTHING;
		$sSensitivity = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::SENSITIVITY);
		switch (strtolower($sSensitivity))
		{
			case 'personal':
				$this->iSensitivity = \MailSo\Mime\Enumerations\Sensitivity::PERSONAL;
				break;
			case 'private':
				$this->iSensitivity = \MailSo\Mime\Enumerations\Sensitivity::PRIVATE_;
				break;
			case 'company-confidential':
				$this->iSensitivity = \MailSo\Mime\Enumerations\Sensitivity::CONFIDENTIAL;
				break;
		}
	}
	
	protected function setImportance($oHeaders)
	{
		$this->iImportance = \MailSo\Mime\Enumerations\MessagePriority::NORMAL;
		
		$sImportanceHeader = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::X_MSMAIL_PRIORITY);
		if (0 === strlen($sImportanceHeader))
		{
			$sImportanceHeader = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::IMPORTANCE);
		}
		if (0 === strlen($sImportanceHeader))
		{
			$sImportanceHeader = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::X_PRIORITY);
		}
		
		if (0 < strlen($sImportanceHeader))
		{
			switch (str_replace(' ', '', strtolower($sImportanceHeader)))
			{
				case 'high':
				case '1(highest)':
				case '2(high)':
				case '1':
				case '2':
					$this->iImportance = \MailSo\Mime\Enumerations\MessagePriority::HIGH;
					break;
				case 'low':
				case '4(low)':
				case '5(lowest)':
				case '4':
				case '5':
					$this->iImportance = \MailSo\Mime\Enumerations\MessagePriority::LOW;
					break;
			}
		}
	}
	
	protected function setReadingConfirmation($oHeaders)
	{
		$this->sReadingConfirmation = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::DISPOSITION_NOTIFICATION_TO);
		if (0 === strlen($this->sReadingConfirmation))
		{
			$this->sReadingConfirmation = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::X_CONFIRM_READING_TO);
		}

		$this->sReadingConfirmation = trim($this->sReadingConfirmation);
	}
	
	protected function setDraftInfo($oHeaders)
	{
		$sDraftInfo = $oHeaders->ValueByName(\MailSo\Mime\Enumerations\Header::X_DRAFT_INFO);
		if (0 < strlen($sDraftInfo))
		{
			$sType = '';
			$sFolder = '';
			$sUid = '';

			\MailSo\Mime\ParameterCollection::NewInstance($sDraftInfo)
				->ForeachList(function ($oParameter) use (&$sType, &$sFolder, &$sUid) {

					switch (strtolower($oParameter->Name()))
					{
						case 'type':
							$sType = $oParameter->Value();
							break;
						case 'uid':
							$sUid = $oParameter->Value();
							break;
						case 'folder':
							$sFolder = base64_decode($oParameter->Value());
							break;
					}
				})
			;

			if (0 < strlen($sType) && 0 < strlen($sFolder) && 0 < strlen($sUid))
			{
				$this->aDraftInfo = array($sType, $sUid, $sFolder);
			}
		}
	}
	
	public function toResponseArray($aParameters = array())
	{
		$oMailModule = \Aurora\System\Api::GetModule('Mail'); 
		$iAccountID = isset($aParameters['Parameters']['AccountID']) ?  $aParameters['Parameters']['AccountID'] : null;

		$oAttachments = $this->getAttachments();

		$iInternalTimeStampInUTC = $this->getInternalTimeStamp();
		$iReceivedOrDateTimeStampInUTC = $this->getReceivedOrDateTimeStamp();

		$aFlags = $this->getFlagsLowerCase();
		$mResult = array_merge(\Aurora\System\Managers\Response::objectWrapper($this, $aParameters), array(
			'Folder' => $this->getFolder(),
			'Uid' => $this->getUid(),
			'Subject' => $this->getSubject(),
			'MessageId' => $this->getMessageId(),
			'Size' => $this->getSize(),
			'TextSize' => $this->getTextSize(),
			'Truncated' => $this->bTruncated,
			'InternalTimeStampInUTC' => $iInternalTimeStampInUTC,
			'ReceivedOrDateTimeStampInUTC' => $iReceivedOrDateTimeStampInUTC,
			'TimeStampInUTC' =>	$oMailModule->getConfig('UseDateFromHeaders', false) && 0 < $iReceivedOrDateTimeStampInUTC ?
				$iReceivedOrDateTimeStampInUTC : $iInternalTimeStampInUTC,
			'From' => \Aurora\System\Managers\Response::GetResponseObject($this->getFrom()),
			'To' => \Aurora\System\Managers\Response::GetResponseObject($this->getTo()),
			'Cc' => \Aurora\System\Managers\Response::GetResponseObject($this->getCc()),
			'Bcc' => \Aurora\System\Managers\Response::GetResponseObject($this->getBcc()),
			'Sender' => \Aurora\System\Managers\Response::GetResponseObject($this->getSender()),
			'ReplyTo' => \Aurora\System\Managers\Response::GetResponseObject($this->getReplyTo()),
    		'IsSeen' => in_array('\\seen', $aFlags),
			'IsFlagged' => in_array('\\flagged', $aFlags),
			'IsAnswered' => in_array('\\answered', $aFlags),
			'IsForwarded' => false,
			'HasAttachments' => $oAttachments && $oAttachments->hasNotInlineAttachments(),
			'HasVcardAttachment' => $oAttachments && $oAttachments->hasVcardAttachment(),
			'HasIcalAttachment' => $oAttachments && $oAttachments->hasIcalAttachment(),
			'Importance' => $this->getImportance(),
			'DraftInfo' => $this->getDraftInfo(),
			'Sensitivity' => $this->getSensitivity()
		));

		$sLowerForwarded = $oMailModule ? strtolower($oMailModule->getConfig('ForwardedFlagName', '')) : '';
		if (!empty($sLowerForwarded))
		{
			$mResult['IsForwarded'] = in_array($sLowerForwarded, $aFlags);
		}
		
		$sHash = \Aurora\System\Api::EncodeKeyValues(array(
			'AccountID' => $iAccountID,
			'Folder' => $mResult['Folder'],
			'Uid' => $mResult['Uid'],
			'MimeType' => 'message/rfc822',
			'FileName' => $mResult['Subject'].'.eml'
		));
		$mResult['DownloadAsEmlUrl'] = '?mail-attachment/' . $sHash;

		$mResult['Hash'] = $sHash;

		if (isset($aParameters['Method']) && ('GetMessage' === $aParameters['Method'] || 'GetMessagesBodies' === $aParameters['Method']))
		{
			$mResult['Headers'] = \MailSo\Base\Utils::Utf8Clear($this->getHeaders());
			$mResult['InReplyTo'] = $this->getInReplyTo();
			$mResult['References'] = $this->getReferences();
			$mResult['ReadingConfirmationAddressee'] = $this->getReadingConfirmation();

			if (!empty($mResult['ReadingConfirmationAddressee']) && in_array('$readconfirm', $aFlags))
			{
				$mResult['ReadingConfirmationAddressee'] = '';
			}

			$bHasExternals = false;
			$aFoundedCIDs = array();

			$sPlain = '';
			$sHtml = trim($this->getHtml());

			if (0 === strlen($sHtml))
			{
				$sPlain = $this->getPlain();
			}
			else if (5000 > strlen($sHtml))
			{
				$mResult['HtmlRaw'] = $sHtml;
			}

			$aContentLocationUrls = array();
			$aFoundedContentLocationUrls = array();

			if ($oAttachments && 0 < $oAttachments->Count())
			{
				$aList =& $oAttachments->GetAsArray();
				foreach ($aList as /* @var \afterlogic\common\managers\mail\classes\attachment */ $oAttachment)
				{
					if ($oAttachment)
					{
						$sContentLocation = $oAttachment->getContentLocation();
						if ($sContentLocation && 0 < \strlen($sContentLocation))
						{
							$aContentLocationUrls[] = $oAttachment->getContentLocation();
						}
					}
				}
			}

			$oSettings =& \Aurora\System\Api::GetSettings();
			if (0 < \strlen($sHtml) && $oSettings->GetValue('DisplayInlineCss', false))
			{
				$oCssToInlineStyles = new \TijsVerkoyen\CssToInlineStyles\CssToInlineStyles($sHtml);
				$oCssToInlineStyles->setEncoding('utf-8');
				$oCssToInlineStyles->setUseInlineStylesBlock(true);

				$mResult['Html'] = \MailSo\Base\HtmlUtils::ClearHtml($oCssToInlineStyles->convert(), $bHasExternals, $aFoundedCIDs,
					$aContentLocationUrls, $aFoundedContentLocationUrls, false, true);
			}
			else
			{
				$mResult['Html'] = 0 === strlen($sHtml) ? '' :
					\MailSo\Base\HtmlUtils::ClearHtml($sHtml, $bHasExternals, $aFoundedCIDs,
						$aContentLocationUrls, $aFoundedContentLocationUrls, false, true);
			}

			$mResult['Plain'] = 0 === strlen($sPlain) ? '' : \MailSo\Base\HtmlUtils::ConvertPlainToHtml($sPlain);
			$mResult['PlainRaw'] = \trim($sPlain);
			$mResult['Rtl'] = 0 < \strlen($mResult['Plain']) ? \MailSo\Base\Utils::IsRTL($mResult['Plain']) : false;

			$mResult['Extend'] = array();
			if (is_array($this->aExtend))
			{
				foreach ($this->aExtend as $oExtend)
				{
					$mResult['Extend'][] = \Aurora\System\Managers\Response::GetResponseObject($oExtend);
				}
			}

			$mResult['Safety'] = $this->getSafety();
			$mResult['HasExternals'] = $bHasExternals;
			$mResult['FoundedCIDs'] = $aFoundedCIDs;
			$mResult['FoundedContentLocationUrls'] = $aFoundedContentLocationUrls;
			$mResult['Attachments'] = \Aurora\System\Managers\Response::GetResponseObject($oAttachments,
					array(
						'AccountID' => $iAccountID,
						'FoundedCIDs' => $aFoundedCIDs,
						'FoundedContentLocationUrls' => $aFoundedContentLocationUrls
					)
			);
//					$mResult['Html'] = \MailSo\Base\Utils::Utf8Clear($mResult['Html']);
//					$mResult['Plain'] = \MailSo\Base\Utils::Utf8Clear($mResult['Plain']);
		}
		else
		{
			$mResult['@Object'] = 'Object/MessageListItem';
			$mResult['Threads'] = $this->getThreads();
		}

		$mResult['Custom'] = \Aurora\System\Managers\Response::GetResponseObject($this->getCustomList());
		$mResult['Subject'] = \MailSo\Base\Utils::Utf8Clear($mResult['Subject']);
		
		return $mResult;
	}
}