class.ilMailFolderGUI.php

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<?php declare(strict_types=1);

/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

use Psr\Http\Message\ServerRequestInterface;

class ilMailFolderGUI
{
    private $confirmTrashDeletion = false;

    private $errorDelete = false;

    private $tpl;

    private $ctrl;

    private $lng;

    private $toolbar;

    private $tabs;

    private $user;

    public $umail;

    public $mbox;

    private $httpRequest;

    private $currentFolderId = 0;

    public function __construct()
    {
        global $DIC;

        $this->tpl = $DIC->ui()->mainTemplate();
        $this->ctrl = $DIC->ctrl();
        $this->lng = $DIC->language();
        $this->toolbar = $DIC->toolbar();
        $this->user = $DIC->user();
        $this->tabs = $DIC->tabs();
        $this->httpRequest = $DIC->http()->request();

        $this->umail = new ilMail($this->user->getId());
        $this->mbox = new ilMailbox($this->user->getId());

        $this->initFolder();
    }

    protected function initFolder() : void
    {
        $folderId = (int) ($this->httpRequest->getParsedBody()['mobj_id'] ?? 0);
        if (0 === $folderId) {
            $folderId = (int) ($this->httpRequest->getQueryParams()['mobj_id'] ?? 0);
        }

        if (0 === $folderId || !$this->mbox->isOwnedFolder($folderId)) {
            $folderId = $this->mbox->getInboxFolder();
        }

        $this->currentFolderId = (int) $folderId;
    }

    protected function parseCommand(string $originalCommand) : string
    {
        $matches = [];
        if (preg_match('/^([a-zA-Z0-9]+?)_(\d+?)$/', $originalCommand, $matches) && 3 === count($matches)) {
            $originalCommand = $matches[1];
        }

        return $originalCommand;
    }

    protected function parseFolderIdFromCommand(string $command) : int
    {
        $matches = [];
        if (
            preg_match('/^([a-zA-Z0-9]+?)_(\d+?)$/', $command, $matches) &&
            3 === count($matches) && is_numeric($matches[2])
        ) {
            return (int) $matches[2];
        }

        throw new InvalidArgumentException("Cannot parse a numeric folder id from command string!");
    }

    public function executeCommand() : void
    {
        $cmd = $this->parseCommand(
            $this->ctrl->getCmd()
        );

        $nextClass = $this->ctrl->getNextClass($this);
        switch ($nextClass) {
            case 'ilcontactgui':
                $this->ctrl->forwardCommand(new ilContactGUI());
                break;

            case 'ilmailoptionsgui':
                $this->tpl->setTitle($this->lng->txt('mail'));
                $this->ctrl->forwardCommand(new ilMailOptionsGUI());
                break;

            case 'ilpublicuserprofilegui':
                $this->tpl->setTitle($this->lng->txt('mail'));
                $profileGui = new ilPublicUserProfileGUI((int) ($this->httpRequest->getQueryParams()['user'] ?? 0));

                $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
                $profileGui->setBackUrl($this->ctrl->getLinkTarget($this, 'showMail'));
                $this->ctrl->clearParameters($this);

                $ret = $this->ctrl->forwardCommand($profileGui);
                if ($ret != '') {
                    $this->tpl->setContent($ret);
                }
                $this->tpl->printToStdout();
                break;

            default:
                if (!method_exists($this, $cmd)) {
                    $cmd = 'showFolder';
                }
                $this->{$cmd}();
                break;
        }
    }

    protected function performEmptyTrash() : void
    {
        $this->umail->deleteMailsOfFolder($this->currentFolderId);

        ilUtil::sendSuccess($this->lng->txt('mail_deleted'), true);
        $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
        $this->ctrl->redirect($this, 'showFolder');
    }

    protected function confirmEmptyTrash() : void
    {
        if ($this->umail->countMailsOfFolder($this->currentFolderId)) {
            $this->confirmTrashDeletion = true;
        }

        $this->showFolder();
    }

    protected function showUser() : void
    {
        $this->tpl->setVariable('TBL_TITLE', implode(' ', [
            $this->lng->txt('profile_of'),
            ilObjUser::_lookupLogin((int) ($this->httpRequest->getQueryParams()['user'] ?? 0))
        ]));
        $this->tpl->setVariable('TBL_TITLE_IMG', ilUtil::getImagePath('icon_usr.svg'));
        $this->tpl->setVariable('TBL_TITLE_IMG_ALT', $this->lng->txt('public_profile'));

        $profile_gui = new ilPublicUserProfileGUI((int) ($this->httpRequest->getQueryParams()['user'] ?? 0));

        $this->ctrl->setParameter($this, 'mail_id', (int) $this->httpRequest->getQueryParams()['mail_id']);
        $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
        $profile_gui->setBackUrl($this->ctrl->getLinkTarget($this, 'showMail'));
        $this->ctrl->clearParameters($this);

        $this->tpl->setTitle($this->lng->txt('mail'));
        $this->tpl->setContent($this->ctrl->getHTML($profile_gui));
        $this->tpl->printToStdout();
    }

    protected function addSubFolderCommands(bool $isUserSubFolder = false) : void
    {
        $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
        $this->toolbar->addButton(
            $this->lng->txt('mail_add_subfolder'),
            $this->ctrl->getLinkTarget($this, 'addSubFolder')
        );

        if ($isUserSubFolder) {
            $this->toolbar->addButton($this->lng->txt('rename'), $this->ctrl->getLinkTarget($this, 'renameSubFolder'));
            $this->toolbar->addButton($this->lng->txt('delete'), $this->ctrl->getLinkTarget($this, 'deleteSubFolder'));
        }
        $this->ctrl->clearParameters($this);
    }

    protected function showFolder(bool $oneConfirmationDialogueRendered = false) : void
    {
        $this->tpl->addBlockFile('ADM_CONTENT', 'adm_content', 'tpl.mail.html', 'Services/Mail');
        $this->tpl->setTitle($this->lng->txt('mail'));

        $isTrashFolder = $this->currentFolderId == $this->mbox->getTrashFolder();

        if ($isTrashFolder && 'deleteMails' === $this->parseCommand($this->ctrl->getCmd()) && !$this->errorDelete) {
            $confirmationGui = new ilConfirmationGUI();
            $confirmationGui->setHeaderText($this->lng->txt('mail_sure_delete'));
            foreach ($this->getMailIdsFromRequest() as $mailId) {
                $confirmationGui->addHiddenItem('mail_id[]', $mailId);
            }
            $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
            $confirmationGui->setFormAction($this->ctrl->getFormAction($this, 'showFolder'));
            $this->ctrl->clearParameters($this);
            $confirmationGui->setConfirm($this->lng->txt('confirm'), 'confirmDeleteMails');
            $confirmationGui->setCancel($this->lng->txt('cancel'), 'showFolder');
            $this->tpl->setVariable('CONFIRMATION', $confirmationGui->getHTML());
            $oneConfirmationDialogueRendered = true;
        }

        $folders = $this->mbox->getSubFolders();
        $mtree = new ilTree($this->user->getId());
        $mtree->setTableNames('mail_tree', 'mail_obj_data');

        $isUserSubFolder = false;
        $isUserRootFolder = false;

        $folder_d = $mtree->getNodeData($this->currentFolderId);
        if ($folder_d['m_type'] === 'user_folder') {
            $isUserSubFolder = true;
        } elseif ($folder_d['m_type'] === 'local') {
            $isUserRootFolder = true;
        }

        $mailtable = $this->getMailFolderTable();
        $mailtable->setSelectedItems($this->getMailIdsFromRequest(true));

        try {
            $mailtable->prepareHTML();
        } catch (Exception $e) {
            ilUtil::sendFailure(
                $this->lng->txt($e->getMessage()) != '-' . $e->getMessage() . '-' ?
                    $this->lng->txt($e->getMessage()) :
                    $e->getMessage()
            );
        }

        $table_html = $mailtable->getHtml();

        $folder_options = [];
        foreach ($folders as $folder) {
            $folder_d = $mtree->getNodeData($folder['obj_id']);

            if ($folder['obj_id'] == $this->currentFolderId) {
                if ($folder['type'] === 'user_folder') {
                    $isUserSubFolder = true;
                } elseif ($folder['type'] === 'local') {
                    $isUserRootFolder = true;
                    $isUserSubFolder = false;
                }
            }

            $folder_options[$folder['obj_id']] = sprintf(
                $this->lng->txt('mail_change_to_folder'),
                $this->lng->txt('mail_' . $folder['title'])
            );
            if ($folder['type'] === 'user_folder') {
                $pre = '';
                for ($i = 2; $i < $folder_d['depth'] - 1; $i++) {
                    $pre .= '&nbsp;';
                }

                if ($folder_d['depth'] > 1) {
                    $pre .= '+';
                }

                $folder_options[$folder['obj_id']] = sprintf(
                    $this->lng->txt('mail_change_to_folder'),
                    $pre . ' ' . $folder['title']
                );
            }
        }

        if ($oneConfirmationDialogueRendered === false && $this->confirmTrashDeletion === false) {
            $this->toolbar->setFormAction($this->ctrl->getFormAction($this, 'showFolder'));

            if ($isUserRootFolder == true || $isUserSubFolder == true) {
                $this->addSubFolderCommands($isUserSubFolder);
            }
        }

        if ($mailtable->isTrashFolder() && $mailtable->getNumberOfMails() > 0 && $this->confirmTrashDeletion === true) {
            $confirmationGui = new ilConfirmationGUI();
            $confirmationGui->setHeaderText($this->lng->txt('mail_empty_trash_confirmation'));
            $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
            $confirmationGui->setFormAction($this->ctrl->getFormAction($this, 'performEmptyTrash'));
            $this->ctrl->clearParameters($this);
            $confirmationGui->setConfirm($this->lng->txt('confirm'), 'performEmptyTrash');
            $confirmationGui->setCancel($this->lng->txt('cancel'), 'showFolder');
            $this->tpl->setVariable('CONFIRMATION', $confirmationGui->getHTML());
        }

        $this->tpl->setVariable('MAIL_TABLE', $table_html);
        $this->tpl->printToStdout();
    }

    protected function deleteSubFolder($a_show_confirm = true) : void
    {
        if ($a_show_confirm) {
            $confirmationGui = new ilConfirmationGUI();
            $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
            $confirmationGui->setFormAction($this->ctrl->getFormAction($this, 'showFolder'));
            $this->ctrl->clearParameters($this);
            $confirmationGui->setHeaderText($this->lng->txt('mail_sure_delete_folder'));
            $confirmationGui->setCancel($this->lng->txt('cancel'), 'showFolder');
            $confirmationGui->setConfirm($this->lng->txt('confirm'), 'performDeleteSubFolder');
            $this->tpl->setVariable('CONFIRMATION', $confirmationGui->getHTML());

            $this->showFolder(true);
        } else {
            $this->showFolder(false);
        }
    }

    protected function performDeleteSubFolder() : void
    {
        $parentFolderId = $this->mbox->getParentFolderId($this->currentFolderId);
        if ($parentFolderId > 0 && $this->mbox->deleteFolder($this->currentFolderId)) {
            ilUtil::sendInfo($this->lng->txt('mail_folder_deleted'), true);
            $this->ctrl->setParameterByClass('ilMailGUI', 'mobj_id', (int) $parentFolderId);
            $this->ctrl->redirectByClass('ilMailGUI');
        } else {
            ilUtil::sendFailure($this->lng->txt('mail_error_delete'));
            $this->showFolder();
        }
    }

    protected function getSubFolderForm(string $mode = 'create') : ilPropertyFormGUI
    {
        $form = new ilPropertyFormGUI();
        $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
        $form->setFormAction($this->ctrl->getFormAction($this, 'performAddSubFolder'));
        $this->ctrl->clearParameters($this);
        if ('edit' === $mode) {
            $form->addCommandButton('performRenameSubFolder', $this->lng->txt('save'));
            $form->setTitle($this->lng->txt('mail_rename_folder'));
        } else {
            $form->addCommandButton('performAddSubFolder', $this->lng->txt('save'));
            $form->setTitle($this->lng->txt('mail_add_folder'));
        }
        $form->addCommandButton('showFolder', $this->lng->txt('cancel'));

        $title = new ilTextInputGUI($this->lng->txt('title'), 'subfolder_title');
        $title->setRequired(true);
        $form->addItem($title);

        return $form;
    }

    protected function performAddSubFolder() : void
    {
        $form = $this->getSubFolderForm();
        $isFormValid = $form->checkInput();
        $form->setValuesByPost();
        if (!$isFormValid) {
            $this->addSubFolder($form);
            return;
        }

        $newFolderId = $this->mbox->addFolder($this->currentFolderId, $form->getInput('subfolder_title'));
        if ($newFolderId > 0) {
            ilUtil::sendSuccess($this->lng->txt('mail_folder_created'), true);
            $this->ctrl->setParameterByClass('ilMailGUI', 'mobj_id', $newFolderId);
            $this->ctrl->redirectByClass('ilMailGUI');
        }

        ilUtil::sendFailure($this->lng->txt('mail_folder_exists'));
        $this->addSubFolder($form);
    }

    protected function addSubFolder(ilPropertyFormGUI $form = null) : void
    {
        if (null === $form) {
            $form = $this->getSubFolderForm();
        }

        $this->tpl->setTitle($this->lng->txt('mail'));
        $this->tpl->setContent($form->getHTML());
        $this->tpl->printToStdout();
    }

    protected function performRenameSubFolder() : void
    {
        $form = $this->getSubFolderForm('edit');
        $isFormValid = $form->checkInput();
        $form->setValuesByPost();
        if (!$isFormValid) {
            $this->renameSubFolder($form);
            return;
        }

        $folderData = $this->mbox->getFolderData($this->currentFolderId);
        if ($folderData['title'] === $form->getInput('subfolder_title')) {
            $this->showFolder();
            return;
        }

        if ($this->mbox->renameFolder($this->currentFolderId, $form->getInput('subfolder_title'))) {
            ilUtil::sendSuccess($this->lng->txt('mail_folder_name_changed'), true);
            $this->ctrl->setParameterByClass('ilMailGUI', 'mobj_id', $this->currentFolderId);
            $this->ctrl->redirectByClass('ilMailGUI');
        }

        ilUtil::sendFailure($this->lng->txt('mail_folder_exists'));
        $this->renameSubFolder($form);
    }

    protected function renameSubFolder(ilPropertyFormGUI $form = null) : void
    {
        if (null === $form) {
            $form = $this->getSubFolderForm('edit');
            $form->setValuesByArray(['subfolder_title' => $this->mbox->getFolderData($this->currentFolderId)['title']]);
        }

        $this->tpl->setTitle($this->lng->txt('mail'));
        $this->tpl->setContent($form->getHTML());
        $this->tpl->printToStdout();
    }

    protected function getMailIdsFromRequest(bool $ignoreHttpGet = false) : array
    {
        $mailIds = $this->httpRequest->getParsedBody()['mail_id'] ?? [];
        if (!is_array($mailIds)) {
            return [];
        }

        if (0 === count($mailIds) && !$ignoreHttpGet) {
            $mailId = $this->httpRequest->getQueryParams()['mail_id'] ?? 0;
            if (is_numeric($mailId)) {
                $mailIds = [$mailId];
            }
        }

        return array_filter(array_map('intval', $mailIds));
    }

    protected function markMailsRead() : void
    {
        $mailIds = $this->getMailIdsFromRequest();
        if (count($mailIds) > 0) {
            $this->umail->markRead($mailIds);
            ilUtil::sendSuccess($this->lng->txt('saved_successfully'));
        } else {
            ilUtil::sendInfo($this->lng->txt('mail_select_one'));
        }

        $this->showFolder();
    }

    protected function markMailsUnread() : void
    {
        $mailIds = $this->getMailIdsFromRequest();
        if (count($mailIds) > 0) {
            $this->umail->markUnread($mailIds);
            ilUtil::sendSuccess($this->lng->txt('saved_successfully'));
        } else {
            ilUtil::sendInfo($this->lng->txt('mail_select_one'));
        }

        $this->showFolder();
    }

    protected function moveSingleMail() : void
    {
        $mailIds = $this->getMailIdsFromRequest();
        if (1 !== count($mailIds)) {
            $this->showMail();
            ilUtil::sendInfo($this->lng->txt('mail_select_one'));
            return;
        }

        $newFolderId = (int) ($this->httpRequest->getParsedBody()['folder_id'] ?? 0);
        $redirectFolderId = $newFolderId;
        foreach ($mailIds as $mailId) {
            $mailData = $this->umail->getMail($mailId);
            if (isset($mailData['folder_id']) && is_numeric($mailData['folder_id']) && (int) $mailData['folder_id'] > 0) {
                $redirectFolderId = $mailData['folder_id'];
                break;
            }
        }

        if ($this->umail->moveMailsToFolder($mailIds, $newFolderId)) {
            ilUtil::sendSuccess($this->lng->txt('mail_moved'), true);
            $this->ctrl->setParameter($this, 'mobj_id', $redirectFolderId);
            $this->ctrl->redirect($this, 'showFolder');
        } else {
            ilUtil::sendFailure($this->lng->txt('mail_move_error'));
            $this->showMail();
        }
    }

    protected function moveMails() : void
    {
        $mailIds = $this->getMailIdsFromRequest();
        if (0 === count($mailIds)) {
            $this->showFolder();
            ilUtil::sendInfo($this->lng->txt('mail_select_one'));
            return;
        }

        $folderId = $this->parseFolderIdFromCommand($this->ctrl->getCmd());
        if ($this->umail->moveMailsToFolder($mailIds, $folderId)) {
            ilUtil::sendSuccess($this->lng->txt('mail_moved'), true);
            $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
            $this->ctrl->redirect($this, 'showFolder');
        } else {
            ilUtil::sendFailure($this->lng->txt('mail_move_error'));
            $this->showFolder();
        }
    }

    protected function deleteMails() : void
    {
        $trashFolderId = (int) $this->mbox->getTrashFolder();
        $mailIds = $this->getMailIdsFromRequest();

        if ($trashFolderId == $this->currentFolderId) {
            if (0 === count($mailIds)) {
                ilUtil::sendInfo($this->lng->txt('mail_select_one'));
                $this->errorDelete = true;
            }
        } else {
            if (0 === count($mailIds)) {
                ilUtil::sendInfo($this->lng->txt('mail_select_one'));
            } elseif ($this->umail->moveMailsToFolder($mailIds, $trashFolderId)) {
                ilUtil::sendSuccess($this->lng->txt('mail_moved_to_trash'), true);
                $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
                $this->ctrl->redirect($this, 'showFolder');
            } else {
                ilUtil::sendFailure($this->lng->txt('mail_move_error'));
            }
        }

        $this->showFolder();
    }

    protected function confirmDeleteMails() : void
    {
        $mailIds = $this->getMailIdsFromRequest();
        if (0 === count($mailIds)) {
            $this->showFolder();
            ilUtil::sendInfo($this->lng->txt('mail_select_one'));
            return;
        }

        if ((int) $this->mbox->getTrashFolder() === (int) $this->currentFolderId) {
            $this->umail->deleteMails($mailIds);
            ilUtil::sendSuccess($this->lng->txt('mail_deleted'), true);
            $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
            $this->ctrl->redirect($this, 'showFolder');
        }

        $this->showFolder();
    }

    protected function showMail() : void
    {
        if ((int) ilSession::get('mail_id') > 0) {
            $mailId = (int) ilSession::get('mail_id');
            ilSession::set('mail_id', null);
        } else {
            $mailId = (int) ($this->httpRequest->getQueryParams()['mail_id'] ?? 0);
        }

        $mailData = $this->umail->getMail($mailId);
        $this->umail->markRead([$mailId]);

        $this->tpl->setTitle($this->lng->txt('mail_mails_of'));

        $this->tabs->clearTargets();
        $this->ctrl->setParameter($this, 'mobj_id', $mailData['folder_id']);
        $this->tabs->setBackTarget($this->lng->txt('back_to_folder'), $this->ctrl->getFormAction($this, 'showFolder'));
        $this->ctrl->clearParameters($this);

        $this->ctrl->setParameter($this, 'mail_id', $mailId);
        $this->ctrl->setParameter($this, 'mobj_id', $mailData['folder_id']);
        $this->toolbar->setFormAction($this->ctrl->getFormAction($this, 'showMail'));
        $this->ctrl->clearParameters($this);

        $form = new ilPropertyFormGUI();
        $form->setPreventDoubleSubmission(false);
        $form->setTableWidth('100%');
        $this->ctrl->setParameter($this, 'mobj_id', $mailData['folder_id']);
        $this->ctrl->setParameter($this, 'mail_id', $mailId);
        $form->setFormAction($this->ctrl->getFormAction($this, 'showMail'));
        $this->ctrl->clearParameters($this);
        $form->setTitle($this->lng->txt('mail_mails_of'));

        $sender = ilObjectFactory::getInstanceByObjId($mailData['sender_id'], false);
        $replyBtn = null;
        if ($sender && $sender->getId() && !$sender->isAnonymous()) {
            $replyBtn = ilLinkButton::getInstance();
            $replyBtn->setCaption('reply');
            $this->ctrl->setParameterByClass('ilmailformgui', 'mobj_id', $mailData['folder_id']);
            $this->ctrl->setParameterByClass('ilmailformgui', 'mail_id', $mailId);
            $this->ctrl->setParameterByClass('ilmailformgui', 'type', 'reply');
            $replyBtn->setUrl($this->ctrl->getLinkTargetByClass('ilmailformgui'));
            $this->ctrl->clearParametersByClass('ilmailformgui');
            $replyBtn->setAccessKey(ilAccessKey::REPLY);
            $replyBtn->setPrimary(true);
            $this->toolbar->addStickyItem($replyBtn);
        }

        $fwdBtn = ilLinkButton::getInstance();
        $fwdBtn->setCaption('forward');
        $this->ctrl->setParameterByClass('ilmailformgui', 'mobj_id', $mailData['folder_id']);
        $this->ctrl->setParameterByClass('ilmailformgui', 'mail_id', $mailId);
        $this->ctrl->setParameterByClass('ilmailformgui', 'type', 'forward');
        $fwdBtn->setUrl($this->ctrl->getLinkTargetByClass('ilmailformgui'));
        $this->ctrl->clearParametersByClass('ilmailformgui');
        $fwdBtn->setAccessKey(ilAccessKey::FORWARD_MAIL);
        if (!$replyBtn) {
            $fwdBtn->setPrimary(true);
            $this->toolbar->addStickyItem($fwdBtn);
        } else {
            $this->toolbar->addButtonInstance($fwdBtn);
        }

        $printBtn = ilLinkButton::getInstance();
        $printBtn->setCaption('print');
        $this->ctrl->setParameter($this, 'mail_id', $mailId);
        $this->ctrl->setParameter($this, 'mobj_id', $mailData['folder_id']);
        $printBtn->setUrl($this->ctrl->getLinkTarget($this, 'printMail'));
        $this->ctrl->clearParameters($this);
        $printBtn->setTarget('_blank');
        $this->toolbar->addButtonInstance($printBtn);

        $deleteBtn = ilSubmitButton::getInstance();
        $deleteBtn->setCaption('delete');
        $deleteBtn->setCommand('deleteMails');
        $deleteBtn->setAccessKey(ilAccessKey::DELETE);
        $this->toolbar->addButtonInstance($deleteBtn);

        if ($sender && $sender->getId() && !$sender->isAnonymous()) {
            $linked_fullname = $sender->getPublicName();
            $picture = ilUtil::img(
                $sender->getPersonalPicturePath('xsmall'),
                $sender->getPublicName(),
                '',
                '',
                0,
                '',
                'ilMailAvatar'
            );

            if (in_array(ilObjUser::_lookupPref($sender->getId(), 'public_profile'), ['y', 'g'])) {
                $this->ctrl->setParameter($this, 'mail_id', $mailId);
                $this->ctrl->setParameter($this, 'mobj_id', $mailData['folder_id']);
                $this->ctrl->setParameter($this, 'user', $sender->getId());
                $linked_fullname = '<br /><a href="' . $this->ctrl->getLinkTarget(
                    $this,
                    'showUser'
                ) . '" title="' . $linked_fullname . '">' . $linked_fullname . '</a>';
                $this->ctrl->clearParameters($this);
            }

            $from = new ilCustomInputGUI($this->lng->txt('from') . ':');
            $from->setHtml($picture . ' ' . $linked_fullname);
            $form->addItem($from);
        } elseif (!$sender || !$sender->getId()) {
            $from = new ilCustomInputGUI($this->lng->txt('from') . ':');
            $from->setHtml($mailData['import_name'] . ' (' . $this->lng->txt('user_deleted') . ')');
            $form->addItem($from);
        } else {
            $from = new ilCustomInputGUI($this->lng->txt('from') . ':');
            $from->setHtml(
                ilUtil::img(
                    ilUtil::getImagePath('HeaderIconAvatar.svg'),
                    ilMail::_getIliasMailerName(),
                    '',
                    '',
                    0,
                    '',
                    'ilMailAvatar'
                ) .
                '<br />' . ilMail::_getIliasMailerName()
            );
            $form->addItem($from);
        }

        $to = new ilCustomInputGUI($this->lng->txt('mail_to') . ':');
        $to->setHtml(ilUtil::htmlencodePlainString($this->umail->formatNamesForOutput((string) $mailData['rcp_to']), false));
        $form->addItem($to);

        if ($mailData['rcp_cc']) {
            $cc = new ilCustomInputGUI($this->lng->txt('cc') . ':');
            $cc->setHtml(ilUtil::htmlencodePlainString($this->umail->formatNamesForOutput((string) $mailData['rcp_cc']), false));
            $form->addItem($cc);
        }

        if ($mailData['rcp_bcc']) {
            $bcc = new ilCustomInputGUI($this->lng->txt('bc') . ':');
            $bcc->setHtml(ilUtil::htmlencodePlainString(
                $this->umail->formatNamesForOutput((string) $mailData['rcp_bcc']),
                false
            ));
            $form->addItem($bcc);
        }

        $subject = new ilCustomInputGUI($this->lng->txt('subject') . ':');
        $subject->setHtml(ilUtil::htmlencodePlainString($mailData['m_subject'], true));
        $form->addItem($subject);

        $date = new ilCustomInputGUI($this->lng->txt('date') . ':');
        $date->setHtml(ilDatePresentation::formatDate(new ilDateTime($mailData['send_time'], IL_CAL_DATETIME)));
        $form->addItem($date);

        $message = new ilCustomInputGUI($this->lng->txt('message') . ':');
        $message->setHtml(ilUtil::htmlencodePlainString($mailData['m_message'], true));
        $form->addItem($message);

        if ($mailData['attachments']) {
            $att = new ilCustomInputGUI($this->lng->txt('attachments') . ':');

            $radiog = new ilRadioGroupInputGUI('', 'filename');
            foreach ($mailData['attachments'] as $file) {
                $radiog->addOption(new ilRadioOption($file, md5($file)));
            }

            $att->setHtml($radiog->render());
            $form->addCommandButton('deliverFile', $this->lng->txt('download'));
            $form->addItem($att);
        }

        $isTrashFolder = false;
        if ($this->mbox->getTrashFolder() == $mailData['folder_id']) {
            $isTrashFolder = true;
        }

        $currentFolderData = $this->mbox->getFolderData($mailData['folder_id']);
        $actions = $this->mbox->getActions((int) $mailData['folder_id']);

        $selectOptions = [];
        foreach ($actions as $key => $action) {
            if ($key === 'moveMails') {
                $folders = $this->mbox->getSubFolders();
                foreach ($folders as $folder) {
                    if (
                        ($folder['type'] !== 'trash' || !$isTrashFolder) &&
                        $folder['obj_id'] != $mailData['folder_id']
                    ) {
                        $optionText = $action . ' ' . $folder['title'];
                        if ($folder['type'] !== 'user_folder') {
                            $optionText = $action . ' ' . $this->lng->txt('mail_' . $folder['title']) . ($folder['type'] == 'trash' ? ' (' . $this->lng->txt('delete') . ')' : '');
                        }

                        $selectOptions[$folder['obj_id']] = $optionText;
                    }
                }
            }
        }

        $folderLabel = $this->lng->txt('mail_' . $currentFolderData['title']);
        if ($currentFolderData['type'] === 'user_folder') {
            $folderLabel = $currentFolderData['title'];
        }

        $this->toolbar->addSeparator();
        $this->toolbar->addText(sprintf($this->lng->txt('current_folder'), $folderLabel));

        if (is_array($selectOptions) && count($selectOptions) > 0) {
            $actions = new ilSelectInputGUI('', 'folder_id');
            $actions->setOptions($selectOptions);
            $this->toolbar->addInputItem($actions);

            $moveBtn = ilSubmitButton::getInstance();
            $moveBtn->setCaption('execute');
            $moveBtn->setCommand('moveSingleMail');
            $this->toolbar->addButtonInstance($moveBtn);
        }

        $prevMail = $this->umail->getPreviousMail($mailId);
        $nextMail = $this->umail->getNextMail($mailId);
        if (is_array($prevMail) || is_array($nextMail)) {
            $this->toolbar->addSeparator();

            if ($prevMail['mail_id']) {
                $prevBtn = ilLinkButton::getInstance();
                $prevBtn->setCaption('previous');
                $this->ctrl->setParameter($this, 'mail_id', $prevMail['mail_id']);
                $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
                $prevBtn->setUrl($this->ctrl->getLinkTarget($this, 'showMail'));
                $this->ctrl->clearParameters($this);
                $this->toolbar->addButtonInstance($prevBtn);
            }

            if ($nextMail['mail_id']) {
                $nextBtn = ilLinkButton::getInstance();
                $nextBtn->setCaption('next');
                $this->ctrl->setParameter($this, 'mail_id', $nextMail['mail_id']);
                $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
                $nextBtn->setUrl($this->ctrl->getLinkTarget($this, 'showMail'));
                $this->ctrl->clearParameters($this);
                $this->toolbar->addButtonInstance($nextBtn);
            }
        }

        $this->tpl->setContent($form->getHTML());
        $this->tpl->printToStdout();
    }

    protected function printMail() : void
    {
        $tplprint = new ilTemplate('tpl.mail_print.html', true, true, 'Services/Mail');

        $mailData = $this->umail->getMail((int) ($this->httpRequest->getQueryParams()['mail_id'] ?? 0));

        $sender = ilObjectFactory::getInstanceByObjId($mailData['sender_id'], false);

        $tplprint->setVariable('TXT_FROM', $this->lng->txt('from'));
        if ($sender && $sender->getId() && !$sender->isAnonymous()) {
            $tplprint->setVariable('FROM', $sender->getPublicName());
        } elseif (!$sender || !$sender->getId()) {
            $tplprint->setVariable('FROM', $mailData['import_name'] . ' (' . $this->lng->txt('user_deleted') . ')');
        } else {
            $tplprint->setVariable('FROM', ilMail::_getIliasMailerName());
        }

        $tplprint->setVariable('TXT_TO', $this->lng->txt('mail_to'));
        $tplprint->setVariable('TO', $mailData['rcp_to']);

        if ($mailData['rcp_cc']) {
            $tplprint->setCurrentBlock('cc');
            $tplprint->setVariable('TXT_CC', $this->lng->txt('cc'));
            $tplprint->setVariable('CC', $mailData['rcp_cc']);
            $tplprint->parseCurrentBlock();
        }

        if ($mailData['rcp_bcc']) {
            $tplprint->setCurrentBlock('bcc');
            $tplprint->setVariable('TXT_BCC', $this->lng->txt('bc'));
            $tplprint->setVariable('BCC', $mailData['rcp_bcc']);
            $tplprint->parseCurrentBlock();
        }

        $tplprint->setVariable('TXT_SUBJECT', $this->lng->txt('subject'));
        $tplprint->setVariable('SUBJECT', htmlspecialchars($mailData['m_subject']));

        $tplprint->setVariable('TXT_DATE', $this->lng->txt('date'));
        $tplprint->setVariable(
            'DATE',
            ilDatePresentation::formatDate(new ilDateTime($mailData['send_time'], IL_CAL_DATETIME))
        );

        $tplprint->setVariable('TXT_MESSAGE', $this->lng->txt('message'));
        $tplprint->setVariable('MAIL_MESSAGE', nl2br(htmlspecialchars($mailData['m_message'])));

        $tplprint->show();
    }

    protected function deliverFile() : void
    {
        $mailId = $this->httpRequest->getQueryParams()['mail_id'] ?? 0;
        if ((int) ilSession::get('mail_id') > 0) {
            $mailId = ilSession::get('mail_id');
            ilSession::set('mail_id', null);
        }

        $filename = $this->httpRequest->getParsedBody()['filename'] ?? '';
        if (is_string(ilSession::get('filename')) && strlen(ilSession::get('filename')) > 0) {
            $filename = ilSession::get('filename');
            ilSession::set('filename', null);
        }

        try {
            if ($mailId > 0 && $filename !== '') {
                while (strpos($filename, '..') !== false) {
                    $filename = str_replace('..', '', $filename);
                }

                $mailFileData = new ilFileDataMail($this->user->getId());
                try {
                    $file = $mailFileData->getAttachmentPathAndFilenameByMd5Hash($filename, (int) $mailId);
                    ilUtil::deliverFile($file['path'], $file['filename']);
                } catch (OutOfBoundsException $e) {
                    throw new ilException('mail_error_reading_attachment');
                }
            } else {
                ilUtil::sendInfo($this->lng->txt('mail_select_attachment'));
                $this->showMail();
            }
        } catch (Exception $e) {
            ilUtil::sendFailure($this->lng->txt($e->getMessage()), true);
            $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
            $this->ctrl->redirect($this);
        }
    }

    protected function deliverAttachments() : void
    {
        try {
            $mailId = $this->httpRequest->getQueryParams()['mail_id'] ?? 0;

            $mailData = $this->umail->getMail((int) $mailId);
            if (null === $mailData || 0 === count((array) $mailData['attachments'])) {
                throw new ilException('mail_error_reading_attachment');
            }

            $type = $this->httpRequest->getQueryParams()['type'] ?? '';

            $mailFileData = new ilFileDataMail($this->user->getId());
            if (count($mailData['attachments']) === 1) {
                $attachment = current($mailData['attachments']);

                try {
                    if ('draft' === $type) {
                        if (!$mailFileData->checkFilesExist([$attachment])) {
                            throw new OutOfBoundsException('');
                        }
                        $pathToFile = $mailFileData->getAbsoluteAttachmentPoolPathByFilename($attachment);
                        $fileName = $attachment;
                    } else {
                        $file = $mailFileData->getAttachmentPathAndFilenameByMd5Hash(
                            md5($attachment),
                            (int) $mailId
                        );
                        $pathToFile = $file['path'];
                        $fileName = $file['filename'];
                    }
                    ilUtil::deliverFile($pathToFile, $fileName);
                } catch (OutOfBoundsException $e) {
                    throw new ilException('mail_error_reading_attachment');
                }
            } else {
                $mailFileData->deliverAttachmentsAsZip(
                    $mailData['m_subject'],
                    (int) $mailId,
                    $mailData['attachments'],
                    'draft' === $type
                );
            }
        } catch (Exception $e) {
            ilUtil::sendFailure($this->lng->txt($e->getMessage()), true);
            $this->ctrl->setParameter($this, 'mobj_id', $this->currentFolderId);
            $this->ctrl->redirect($this);
        }
    }

    protected function getMailFolderTable() : ilMailFolderTableGUI
    {
        $table = new ilMailFolderTableGUI(
            $this,
            $this->currentFolderId,
            'showFolder',
            $this->currentFolderId == $this->mbox->getTrashFolder(),
            $this->currentFolderId == $this->mbox->getSentFolder(),
            $this->currentFolderId == $this->mbox->getDraftsFolder()
        );
        $table->initFilter();
        
        return $table;
    }

    protected function applyFilter() : void
    {
        $table = $this->getMailFolderTable();
        $table->resetOffset();
        $table->writeFilterToSession();

        $this->showFolder();
    }

    protected function resetFilter() : void
    {
        $table = $this->getMailFolderTable();
        $table->resetOffset();
        $table->resetFilter();

        $this->showFolder();
    }
}