/*******************************************************************************
 * retroshare-gui/src/gui/gxsforums/CreateGxsForumMsg.cpp                      *
 *                                                                             *
 * Copyright 2013 Robert Fernie        <retroshare.project@gmail.com>          *
 *                                                                             *
 * This program is free software: you can redistribute it and/or modify        *
 * it under the terms of the GNU Affero General Public License as              *
 * published by the Free Software Foundation, either version 3 of the          *
 * License, or (at your option) any later version.                             *
 *                                                                             *
 * This program is distributed in the hope that it will be useful,             *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of              *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                *
 * GNU Affero General Public License for more details.                         *
 *                                                                             *
 * You should have received a copy of the GNU Affero General Public License    *
 * along with this program. If not, see <https://www.gnu.org/licenses/>.       *
 *                                                                             *
 *******************************************************************************/

#include "CreateGxsForumMsg.h"
#include "ui_CreateGxsForumMsg.h"

#include <QMessageBox>
#include <QFile>
#include <QDropEvent>
#include <QPushButton>
#include <QTextDocumentFragment>

#include <retroshare/rsgxsforums.h>
#include <retroshare/rsgxscircles.h>

#include "gui/settings/rsharesettings.h"
#include "gui/RetroShareLink.h"
#include "gui/common/Emoticons.h"
#include "gui/common/UIStateHelper.h"
#include "gui/Identity/IdEditDialog.h"
#include "gui/common/FilesDefs.h"

#include "util/HandleRichText.h"
#include "util/misc.h"
#include "util/qtthreadsutils.h"

#include <sys/stat.h>
#include <iostream>

#define CREATEGXSFORUMMSG_FORUMINFO		1
#define CREATEGXSFORUMMSG_PARENTMSG		2
#define CREATEGXSFORUMMSG_CIRCLENFO		3
#define CREATEGXSFORUMMSG_ORIGMSG    	4

//#define ENABLE_GENERATE

/** Constructor */
CreateGxsForumMsg::CreateGxsForumMsg(const RsGxsGroupId &fId, const RsGxsMessageId &pId, const RsGxsMessageId& mOId, const RsGxsId& posterId, bool isModerating)
    : QDialog(NULL, Qt::WindowSystemMenuHint | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint),
      mForumId(fId), mParentId(pId), mOrigMsgId(mOId),mPosterId(posterId),mIsModerating(isModerating),
      ui(new Ui::CreateGxsForumMsg)
{
	/* Invoke the Qt Designer generated object setup routine */
	ui->setupUi(this);

	setAttribute(Qt::WA_DeleteOnClose, true);

	/* Setup UI helper */
	mStateHelper = new UIStateHelper(this);
	mStateHelper->addWidget(CREATEGXSFORUMMSG_FORUMINFO, ui->postButton);
	mStateHelper->addWidget(CREATEGXSFORUMMSG_FORUMINFO, ui->innerFrame);
	mStateHelper->addLoadPlaceholder(CREATEGXSFORUMMSG_FORUMINFO, ui->forumName);
	mStateHelper->addLoadPlaceholder(CREATEGXSFORUMMSG_FORUMINFO, ui->forumSubject, false);
	mStateHelper->addClear(CREATEGXSFORUMMSG_FORUMINFO, ui->forumName);

	mStateHelper->addWidget(CREATEGXSFORUMMSG_PARENTMSG, ui->postButton);
	mStateHelper->addWidget(CREATEGXSFORUMMSG_PARENTMSG, ui->innerFrame);
	mStateHelper->addLoadPlaceholder(CREATEGXSFORUMMSG_PARENTMSG, ui->forumName);
	mStateHelper->addLoadPlaceholder(CREATEGXSFORUMMSG_PARENTMSG, ui->forumSubject, false);
	mStateHelper->addClear(CREATEGXSFORUMMSG_PARENTMSG, ui->forumName);

	mStateHelper->addWidget(CREATEGXSFORUMMSG_ORIGMSG, ui->postButton);
	mStateHelper->addWidget(CREATEGXSFORUMMSG_ORIGMSG, ui->innerFrame);
	mStateHelper->addLoadPlaceholder(CREATEGXSFORUMMSG_ORIGMSG, ui->forumName);
	mStateHelper->addLoadPlaceholder(CREATEGXSFORUMMSG_ORIGMSG, ui->forumSubject, false);
	mStateHelper->addClear(CREATEGXSFORUMMSG_ORIGMSG, ui->forumName);


	QString text = mOId.isNull()?(pId.isNull() ? tr("Start New Thread") : tr("Post Forum Message")):tr("Edit Message");
	setWindowTitle(text);
	
	if (!mOId.isNull())
	ui->postButton->setText(tr ("Update"));

	ui->forumMessage->setPlaceholderText(tr ("Text"));

    ui->headerFrame->setHeaderImage(FilesDefs::getPixmapFromQtResourcePath(":/icons/png/forums.png"));
	ui->headerFrame->setHeaderText(text);

	ui->generateSpinBox->setEnabled(false);

	Settings->loadWidgetInformation(this);

	connect(ui->hashBox, SIGNAL(fileHashingFinished(QList<HashedFile>)), this, SLOT(fileHashingFinished(QList<HashedFile>)));

	// connect up the buttons.
	connect(ui->postButton, SIGNAL(clicked()), this, SLOT(createMsg()));
	connect(ui->cancelButton, SIGNAL(clicked()), this, SLOT(reject()));
	connect(ui->emoticonButton, SIGNAL(clicked()), this, SLOT(smileyWidgetForums()));
	connect(ui->attachFileButton, SIGNAL(clicked()), this, SLOT(addFile()));
	connect(ui->attachPictureButton, SIGNAL(clicked()), this, SLOT(addPicture()));
	connect(ui->forumMessage, SIGNAL(textChanged()), this, SLOT(checkLength()));
	connect(ui->generateCheckBox, SIGNAL(toggled(bool)), ui->generateSpinBox, SLOT(setEnabled(bool)));

	setAcceptDrops(true);
	ui->hashBox->setDropWidget(this);
	ui->hashBox->setAutoHide(false);

	mParentMsgLoaded = false;
	mForumMetaLoaded = false;
	mForumCircleLoaded = false;

	newMsg();
	
	ui->hashGroupBox->hide();

#ifndef ENABLE_GENERATE
	ui->generateCheckBox->hide();
	ui->generateSpinBox->hide();
#endif
    processSettings(true);
}

CreateGxsForumMsg::~CreateGxsForumMsg()
{
    processSettings(false);

    delete ui;

}

void CreateGxsForumMsg::processSettings(bool load)
{
    Settings->beginGroup(QString("ForumPostsWidget"));

    if (load)
    {
        // state of ID Chooser combobox
        RsGxsId gxs_id(Settings->value("IDChooser", QString::fromStdString(RsGxsId().toStdString())).toString().toStdString());

        if(!gxs_id.isNull() && rsIdentity->isOwnId(gxs_id))
            ui->idChooser->setChosenId(gxs_id);
    }
    else
    {
        // state of ID Chooser combobox
        RsGxsId id;

        if(ui->idChooser->getChosenId(id))
            Settings->setValue("IDChooser", QString::fromStdString(id.toStdString()));
    }

    Settings->endGroup();
}

void  CreateGxsForumMsg::newMsg()
{
	/* clear all */
	mParentMsgLoaded = false;
	mForumMetaLoaded = false;

	/* fill in the available OwnIds for signing */
    
    	//std::cerr << "Initing ID chooser. Sign flags = " << std::hex << mForumMeta.mSignFlags << std::dec << std::endl;
        
    if(!mPosterId.isNull())
    {
        std::set<RsGxsId> id_set ;
        id_set.insert(mPosterId) ;

		ui->idChooser->loadIds(IDCHOOSER_ID_REQUIRED | IDCHOOSER_NO_CREATE, mPosterId);
		ui->idChooser->setIdConstraintSet(id_set);
    }
    else
		ui->idChooser->loadIds(IDCHOOSER_ID_REQUIRED, mPosterId);

        if (mForumId.isNull()) {
		mStateHelper->setActive(CREATEGXSFORUMMSG_FORUMINFO, false);
		mStateHelper->setActive(CREATEGXSFORUMMSG_PARENTMSG, false);
		mStateHelper->setActive(CREATEGXSFORUMMSG_ORIGMSG, false);

		mStateHelper->clear(CREATEGXSFORUMMSG_FORUMINFO);
		mStateHelper->clear(CREATEGXSFORUMMSG_PARENTMSG);
		mStateHelper->clear(CREATEGXSFORUMMSG_ORIGMSG);
		ui->forumName->setText(tr("No Forum"));
		return;
	}

    mStateHelper->setLoading(CREATEGXSFORUMMSG_FORUMINFO, true);

    if (mParentId.isNull())
    {
        mStateHelper->setActive(CREATEGXSFORUMMSG_PARENTMSG, false);
        mParentMsgLoaded = true;
    }
    else
    {
        mStateHelper->setLoading(CREATEGXSFORUMMSG_PARENTMSG, true);
        mParentMsgLoaded = false;
    }

    if (mOrigMsgId.isNull())
    {
        mStateHelper->setActive(CREATEGXSFORUMMSG_ORIGMSG, false);
        mOrigMsgLoaded = true;
    }
    else
    {
        mStateHelper->setLoading(CREATEGXSFORUMMSG_ORIGMSG, true);
        mOrigMsgLoaded = false;
    }

    RsThread::async( [this]()
    {
        // We only need group Meta information, but forums do not provide it currently

        std::vector<RsGxsForumGroup> forums_info;
        rsGxsForums->getForumsInfo(std::list<RsGxsGroupId>{ mForumId },forums_info);

        // Load parent message

        RsGxsForumMsg parent_msg;

        if(!mParentId.isNull())
        {
            std::vector<RsGxsForumMsg> parent_msgs;
            rsGxsForums->getForumContent(mForumId,std::set<RsGxsMessageId>{ mParentId },parent_msgs);

            if(parent_msgs.size() == 1)
                parent_msg = *parent_msgs.begin();
            else
                RsErr() << "Cannot get parent message " << mParentId << " from forum." ;
        }

        // Load original message (edit mode)

        RsGxsForumMsg orig_msg;

        if(!mOrigMsgId.isNull())
        {
            std::vector<RsGxsForumMsg> orig_msgs;
            rsGxsForums->getForumContent(mForumId,std::set<RsGxsMessageId>{ mOrigMsgId },orig_msgs);

            if(orig_msgs.size() == 1)
                orig_msg = *orig_msgs.begin();
            else
                RsErr() << "Cannot get orig message " << mOrigMsgId << " from forum." ;
        }

        // Now update GUI with all that nice data

        RsQThreadUtils::postToObject( [this,forums_info,parent_msg,orig_msg]()
        {
            if(forums_info.size() != 1)
            {
                RsErr() << "Cannot retrieve group information for forum " << mForumId ;

                return;
            }
            auto fg(forums_info.front());

            mForumMetaLoaded = true;
            mForumMeta = fg.mMeta;

            if(!parent_msg.mMsg.empty())
            {
                mParentMsg = parent_msg;
                mParentMsgLoaded = true;
            }
            if(!orig_msg.mMsg.empty())
            {
                mOrigMsg = orig_msg;
                mOrigMsgLoaded = true;
            }

            if(!mForumMeta.mCircleId.isNull())
                loadCircleInfo(RsGxsGroupId(mForumMeta.mCircleId));

            // Now update the GUI

            mStateHelper->setActive(CREATEGXSFORUMMSG_PARENTMSG, mParentMsgLoaded);
            mStateHelper->setLoading(CREATEGXSFORUMMSG_PARENTMSG, false);

            mStateHelper->setActive(CREATEGXSFORUMMSG_ORIGMSG, mOrigMsgLoaded);
            mStateHelper->setLoading(CREATEGXSFORUMMSG_ORIGMSG, false);

            mStateHelper->setActive(CREATEGXSFORUMMSG_FORUMINFO, mForumMetaLoaded);
            mStateHelper->setLoading(CREATEGXSFORUMMSG_FORUMINFO, false);

            loadFormInformation();

        },this);
    });
}

void  CreateGxsForumMsg::loadFormInformation()
{
    uint32_t fl = IDCHOOSER_ID_REQUIRED ;

	if( (mForumMeta.mSignFlags & GXS_SERV::FLAG_AUTHOR_AUTHENTICATION_GPG) || (mForumMeta.mSignFlags & GXS_SERV::FLAG_AUTHOR_AUTHENTICATION_GPG_KNOWN))
		fl |= IDCHOOSER_NON_ANONYMOUS;

	if(!mPosterId.isNull())
		fl |= IDCHOOSER_NO_CREATE;

	ui->idChooser->setFlags(fl) ;

	QString name = QString::fromUtf8(mForumMeta.mGroupName.c_str());
	QString subj;

    if(!mOrigMsgId.isNull())
        subj = QString::fromUtf8(mOrigMsg.mMeta.mMsgName.c_str());
	else if (!mParentId.isNull())
	{
		QString title = QString::fromUtf8(mParentMsg.mMeta.mMsgName.c_str());
        name += " - " + tr("In Reply to") + ": ";
		name += title;

		QString text = title;

		if (text.startsWith("Re:", Qt::CaseInsensitive))
			subj = title;
		else
			subj = "Re: " + title;
	}

	ui->forumName->setText(misc::removeNewLine(name));

    std::cerr << "Setting name to \"" << misc::removeNewLine(name).toStdString() << std::endl;
	if(!subj.isNull())
		ui->forumSubject->setText(misc::removeNewLine(subj));

	if (ui->forumSubject->text().isEmpty())
	{
		ui->forumSubject->setFocus();
		ui->forumSubject->setPlaceholderText(tr ("Title"));
	}
	else
		ui->forumMessage->setFocus();

#ifdef TOGXS
	if (mForumMeta.mGroupFlags & RS_DISTRIB_AUTHEN_REQ)
#else
	if (1)
#endif
	{
		ui->signBox->setChecked(true);
		ui->signBox->setEnabled(false);
		ui->signBox->hide();
	}
	else
	{
		/* Uncheck sign box by default for anonymous forums */
		ui->signBox->setChecked(false);
		ui->signBox->setEnabled(true);
	}

	//ui->forumMessage->setText("");
}

static const uint32_t MAX_ALLOWED_GXS_MESSAGE_SIZE = 199000;

void CreateGxsForumMsg::checkLength()
{
	QString text;
	RsHtml::optimizeHtml(ui->forumMessage, text);
	std::wstring msg = text.toStdWString();
	int charRemains = MAX_ALLOWED_GXS_MESSAGE_SIZE - msg.length();
	if(charRemains >= 0) {
		text = tr("It remains %1 characters after HTML conversion.").arg(charRemains);
		ui->info_Label->setStyleSheet("QLabel#info_Label { }");
	}else{
		text = tr("Warning: This message is too big of %1 characters after HTML conversion.").arg((0-charRemains));
	    ui->info_Label->setStyleSheet("QLabel#info_Label {color: red; font: bold; }");
	}
	ui->postButton->setToolTip(text);
	ui->postButton->setEnabled(charRemains>=0);
	ui->info_Label->setText(text);
}

void  CreateGxsForumMsg::createMsg()
{
	QString name = misc::removeNewLine(ui->forumSubject->text());
	QString desc;

	RsHtml::optimizeHtml(ui->forumMessage, desc);

	if(name.isEmpty() | desc.isEmpty()) {
		/* error message */
		QMessageBox::warning(this, tr("RetroShare"),tr("Please set a Forum Subject and Forum Message"), QMessageBox::Ok, QMessageBox::Ok);

		return; //Don't add  a empty Subject!!
	}//if(name.isEmpty())

	RsGxsForumMsg msg;
	msg.mMeta.mGroupId = mForumId;
	msg.mMeta.mParentId = mParentId;
	msg.mMeta.mOrigMsgId = mOrigMsgId;
	msg.mMeta.mMsgFlags = mIsModerating?RS_GXS_FORUM_MSG_FLAGS_MODERATED : 0;
	msg.mMeta.mMsgId.clear() ;

	if (mParentMsgLoaded) {
		msg.mMeta.mThreadId = mParentMsg.mMeta.mThreadId;
	}//if (mParentMsgLoaded)

	msg.mMeta.mMsgName = std::string(name.toUtf8());
	msg.mMsg = std::string(desc.toUtf8());
#ifdef TOGXS
	msg.mMeta.mMsgFlags = RS_DISTRIB_AUTHEN_REQ;
#endif

	if ((msg.mMsg == "") && (msg.mMeta.mMsgName == ""))
		return; /* do nothing */

	if (ui->signBox->isChecked()) {
		RsGxsId authorId;
		switch (ui->idChooser->getChosenId(authorId)) {
		case GxsIdChooser::KnowId:
		case GxsIdChooser::UnKnowId:
			msg.mMeta.mAuthorId = authorId;
			//std::cerr << "CreateGxsForumMsg::createMsg() AuthorId: " << authorId;
			//std::cerr << std::endl;

			break;
		case GxsIdChooser::None:
		{
			// This is ONLY for the case where no id exists yet
			// If an id exists, the chooser would not return None
			IdEditDialog dlg(this);
			dlg.setupNewId(false);
			dlg.exec();
			// fetch new id, we will then see if the identity creation was successful
			std::list<RsGxsId> own_ids;
			if(!rsIdentity->getOwnIds(own_ids) || own_ids.size() != 1)
				return;
			// we have only a single id, so we can use the first one
			authorId = own_ids.front();
			break;
		}
		case GxsIdChooser::NoId:
		default:
			std::cerr << "CreateGxsForumMsg::createMsg() ERROR GETTING AuthorId!";
			std::cerr << std::endl;
			QMessageBox::warning(this, tr("RetroShare"),tr("Congrats, you found a bug!")+" "+QString(__FILE__)+":"+QString(__LINE__), QMessageBox::Ok, QMessageBox::Ok);

			return;
		}//switch (ui->idChooser->getChosenId(authorId))
	} else {
		//std::cerr << "CreateGxsForumMsg::createMsg() No Signature (for now :)";
		//std::cerr << std::endl;
		QMessageBox::warning(this, tr("RetroShare"),tr("Please choose Signing Id, it is required"), QMessageBox::Ok, QMessageBox::Ok);
		return;
	}//if (ui->signBox->isChecked())

	int generateCount = 0;

#ifdef ENABLE_GENERATE
	if (ui->generateCheckBox->isChecked()) {
		generateCount = ui->generateSpinBox->value();
		if (QMessageBox::question(this, tr("Generate mass data"), tr("Do you really want to generate %1 messages ?").arg(generateCount), QMessageBox::Yes|QMessageBox::No, QMessageBox::No) == QMessageBox::No) {
			return;
		}//if (QMessageBox::question(this,
	}//if (ui->generateCheckBox->isChecked())
#endif

	uint32_t token;
	if (generateCount) {
#ifdef ENABLE_GENERATE
		for (int count = 0; count < generateCount; ++count) {
			RsGxsForumMsg generateMsg = msg;
			generateMsg.mMeta.mMsgName = QString("%1 %2").arg(QString::fromUtf8(msg.mMeta.mMsgName.c_str())).arg(count + 1, 3, 10, QChar('0')).toUtf8().constData();

			rsGxsForums->createMsg(token, generateMsg);
		}//for (int count = 0
#endif
	} else {
		rsGxsForums->createMsg(token, msg);
	}//if (generateCount)

	close();
}

void CreateGxsForumMsg::closeEvent (QCloseEvent * /*event*/)
{
	Settings->saveWidgetInformation(this);
}

void CreateGxsForumMsg::reject()
{
    if (ui->forumMessage->document()->isModified()) {
        QMessageBox::StandardButton ret;
        ret = QMessageBox::warning(this, tr("Cancel Forum Message"),
                                   tr("Forum Message has not been sent yet!\n"
                                      "Do you want to discard this message?"),
                                   QMessageBox::Yes | QMessageBox::No);
        switch (ret) {
        case QMessageBox::Yes:
            break;
        case QMessageBox::No:
            return; // don't close
        default:
            break;
        }
    }

    QDialog::reject();
}

void CreateGxsForumMsg::smileyWidgetForums()
{
	Emoticons::showSmileyWidget(this, ui->emoticonButton, SLOT(addSmileys()), false);
}

void CreateGxsForumMsg::addSmileys()
{
	QString smiley = qobject_cast<QPushButton*>(sender())->toolTip().split("|").first();
	// add trailing space
	smiley += QString(" ");
	// add preceding space when needed (not at start of text or preceding space already exists)
	if(!ui->forumMessage->textCursor().atStart() && ui->forumMessage->toPlainText()[ui->forumMessage->textCursor().position() - 1] != QChar(' '))
		smiley = QString(" ") + smiley;
	ui->forumMessage->textCursor().insertText(smiley);
}

void CreateGxsForumMsg::addFile()
{
	QStringList files;
	if (misc::getOpenFileNames(this, RshareSettings::LASTDIR_EXTRAFILE, tr("Add Extra File"), "", files)) {
		ui->hashBox->addAttachments(files,RS_FILE_REQ_ANONYMOUS_ROUTING);
		ui->hashGroupBox->show();
	}
}

void CreateGxsForumMsg::addPicture()
{
	QString file;
	if (misc::getOpenFileName(window(), RshareSettings::LASTDIR_IMAGES, tr("Load Picture File"), "Pictures (*.png *.xpm *.jpg *.jpeg)", file)) {
		QString encodedImage;
		if (RsHtml::makeEmbeddedImage(file, encodedImage, 640*480, MAX_ALLOWED_GXS_MESSAGE_SIZE - 200)) {
			QTextDocumentFragment fragment = QTextDocumentFragment::fromHtml(encodedImage);
			ui->forumMessage->textCursor().insertFragment(fragment);
		}
	}
}

void CreateGxsForumMsg::fileHashingFinished(QList<HashedFile> hashedFiles)
{
	//std::cerr << "CreateGxsForumMsg::fileHashingFinished() started." << std::endl;

	QString mesgString;

	QList<HashedFile>::iterator it;
	for (it = hashedFiles.begin(); it != hashedFiles.end(); ++it) {
		HashedFile& hashedFile = *it;
		RetroShareLink link = RetroShareLink::createFile(hashedFile.filename, hashedFile.size,
		                                                 QString::fromStdString(hashedFile.hash.toStdString()));
		if (link.valid()) {
			mesgString += link.toHtmlSize() + "<br>";
		}
	}

	if (!mesgString.isEmpty()) {
		ui->forumMessage->textCursor().insertHtml(mesgString);
	}

	ui->forumMessage->setFocus( Qt::OtherFocusReason );
	ui->hashGroupBox->hide();
}

void CreateGxsForumMsg::loadCircleInfo(const RsGxsGroupId& circle_id)
{
    //std::cerr << "Loading forum circle info" << std::endl;
    
    RsThread::async( [circle_id,this]()
    {
        std::vector<RsGxsCircleGroup> circle_grp_v ;
        rsGxsCircles->getCirclesInfo(std::list<RsGxsGroupId>{ circle_id }, circle_grp_v);

        if (circle_grp_v.empty())
        {
            std::cerr << "(EE) unexpected empty result from getGroupData. Cannot process circle now!" << std::endl;
            return ;
        }

        if (circle_grp_v.size() != 1)
        {
            std::cerr << "(EE) very weird result from getGroupData. Should get exactly one circle" << std::endl;
            return ;
        }

        RsGxsCircleGroup cg = circle_grp_v.front();

        RsQThreadUtils::postToObject( [cg,this]()
        {
            mForumCircleData = cg;
            mForumCircleLoaded = true;

            //std::cerr << "Loaded content of circle " << cg.mMeta.mGroupId << std::endl;

            //for(std::set<RsGxsId>::const_iterator it(cg.mInvitedMembers.begin());it!=cg.mInvitedMembers.end();++it)
            //    std::cerr << "  added constraint to circle element " << *it << std::endl;

            ui->idChooser->setIdConstraintSet(cg.mInvitedMembers) ;
            ui->idChooser->setFlags(IDCHOOSER_NO_CREATE | ui->idChooser->flags()) ;	// since there's a circle involved, no ID creation can be needed

            RsGxsId tmpid ;
            if(ui->idChooser->countEnabledEntries() == 0)
            {
                QMessageBox::information(NULL,tr("No compatible ID for this forum"),tr("None of your identities is allowed to post in this forum. This could be due to the forum being limited to a circle that contains none of your identities, or forum flags requiring a PGP-signed identity.")) ;
                close() ;
            }
        }, this);
    });
}

void CreateGxsForumMsg::setSubject(const QString& msg)
{
	ui->forumSubject->setText(msg);
}

void CreateGxsForumMsg::insertPastedText(const QString& msg)
{
	ui->forumMessage->append(msg);
}