<?php

/**
 * Kunena Component
 *
 * @package         Kunena.Framework
 * @subpackage      Forum.Message.Attachment
 *
 * @copyright       Copyright (C) 2008 - @currentyear@ Kunena Team. All rights reserved.
 * @license         https://www.gnu.org/copyleft/gpl.html GNU/GPL
 * @link            https://www.kunena.org
 **/

namespace Kunena\Forum\Libraries\Attachment;

\defined('_JEXEC') or die();

use Exception;
use finfo;
use InvalidArgumentException;
use Joomla\CMS\Application\SiteApplication;
use Joomla\CMS\Factory;
use Joomla\Filesystem\File;
use Joomla\Filesystem\Folder;
use Joomla\CMS\Image\Image;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Uri\Uri;
use Joomla\Database\DatabaseInterface;
use Kunena\Forum\Libraries\Config\KunenaConfig;
use Kunena\Forum\Libraries\Database\KunenaDatabaseObject;
use Kunena\Forum\Libraries\Exception\KunenaExceptionAuthorise;
use Kunena\Forum\Libraries\Factory\KunenaFactory;
use Kunena\Forum\Libraries\Forum\Message\KunenaMessage;
use Kunena\Forum\Libraries\Forum\Message\KunenaMessageHelper;
use Kunena\Forum\Libraries\Image\KunenaImage;
use Kunena\Forum\Libraries\Layout\KunenaLayout;
use Kunena\Forum\Libraries\Path\KunenaPath;
use Kunena\Forum\Libraries\Route\KunenaRoute;
use Kunena\Forum\Libraries\Upload\KunenaUpload;
use Kunena\Forum\Libraries\User\KunenaUser;
use Kunena\Forum\Libraries\User\KunenaUserHelper;
use Kunena\Forum\Libraries\KunenaPrivate\Message\KunenaPrivateMessageFinder;
use Kunena\Forum\Libraries\Tables\TableKunenaPrivateAttachmentMap;
use RuntimeException;

/**
 * Class KunenaAttachment
 *
 * @property int    $id
 * @property int    $userid
 * @property int    $mesid
 * @property int    $protected
 * @property string $hash
 * @property int    $size
 * @property string $folder
 * @property string $filetype
 * @property string $filename
 * @property string $filename_real
 * @property string $caption
 * @property string $comment
 * @property int    $inline
 * @property string $typeAlias
 * @property int    $width   Image width (0 for non-images).
 * @property int    $height  Image height (0 for non-images).
 * @property string $setLayout
 * @since   Kunena 4.0
 */
class KunenaAttachment extends KunenaDatabaseObject
{
    // Higher protection level means that the KunenaAttachment is visible to less people.
    // Protection level can be checked as bitmask: PROTECTION_ACL + PROTECTION_FRIENDS.
    // To filter out KunenaAttachments when doing a database query, you can use:
    // Visible for author = value < PROTECTION_AUTHOR * 2
    // TODO: Implement these

    /**
     * @since   Kunena 6.0
     */
    const PROTECTION_NONE = 0;

    /**
     * @since   Kunena 6.0
     */
    const PROTECTION_PUBLIC = 1;

    /**
     * @since   Kunena 6.0
     */
    const PROTECTION_ACL = 2;

    /**
     * @since   Kunena 6.0
     */
    const PROTECTION_FRIENDS = 4;

    /**
     * @since   Kunena 6.0
     */
    const PROTECTION_MODERATORS = 8;

    /**
     * @since   Kunena 6.0
     */
    const PROTECTION_ADMINS = 16;

    /**
     * @since   Kunena 6.0
     */
    const PROTECTION_PRIVATE = 32;

    /**
     * @since   Kunena 6.0
     */
    const PROTECTION_AUTHOR = 64;

    /**
     * @since   Kunena 6.0
     */
    const PROTECTION_UNPUBLISHED = 128;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    protected static $_directory = 'media/kunena/attachments';

    /**
     * @var     array
     * @since   Kunena 6.0
     */
    protected static $actions = [
        'read'        => ['Read'],
        'createimage' => [],
        'createfile'  => [],
        'delete'      => ['Exists', 'Own'],
        'private'     => ['Private'],
    ];

    /**
     * @var     integer
     * @since   Kunena 6.0
     */
    public $id = null;

    /**
     * @var     boolean
     * @since   Kunena 6.0
     */
    public $disabled = false;

    /**
     * @var     integer
     * @since   Kunena 6.0
     */
    public $width;

    /**
     * @var     integer
     * @since   Kunena 6.0
     */
    public $height;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $folder;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $userid;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $mesid;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $protected;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $hash;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $size;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $filetype;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $filename;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $filename_real;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $comment; //ToDo does comment exist anymore?

    /**
     * @var     boolean
     * @since   Kunena 6.0
     */
    public $inline;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $typeAlias;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $caption;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    public $setLayout = 'default';

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    protected $_table = 'KunenaAttachments';

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    protected $path;

    /**
     * @var     string
     * @since   Kunena 6.0
     */
    protected $shortname;

    /**
     * @param   mixed  $identifier  identifier
     * @param   bool   $reload      reload
     *
     * @return  KunenaAttachment
     *
     * @throws  Exception
     * @since   Kunena 4.0
     */
    public static function getInstance($identifier = null, $reload = false): KunenaAttachment
    {
        return KunenaAttachmentHelper::get($identifier, $reload);
    }

    /**
     * Destructor deletes the files from the filesystem if KunenaAttachment isn't stored in database.
     *
     * @since   Kunena 4.0
     */
    public function __destruct()
    {
        if (!$this->exists()) {
            $this->deleteFile();
        }
    }

    /**
     * @return  void
     *
     * @internal
     *
     * @since   Kunena 4.0
     */
    protected function deleteFile(): void
    {
        if (empty($this->folder)) {
            return;
        }

        if (self::$_directory != substr($this->folder, 0, \strlen(self::$_directory))) {
            return;
        }

        $path     = JPATH_ROOT . "/{$this->folder}";
        $filename = $path . '/' . $this->filename;

        if (is_file($filename)) {
            File::delete($filename);
        }

        $filename = $path . '/raw/' . $this->filename;

        if (is_file($filename)) {
            File::delete($filename);
        }

        $filename = $path . '/thumb/' . $this->filename;

        if (is_file($filename)) {
            File::delete($filename);
        }
    }

    /**
     * Getter function.
     *
     * @param   string  $property  property
     *
     * @return  mixed
     *
     * @since   Kunena 4.0
     */
    public function __get(string $property)
    {
        if ($this->width == null) {
            $this->initialize();
        }

        switch ($property) {
            case 'width':
                return $this->width;
            case 'height':
                return $this->height;
            case 'filename':
                return $this->filename;
            case 'folder':
                return $this->folder;
            case 'userid':
                return $this->userid;
            case 'mesid':
                return $this->mesid;
            case 'protected':
                return $this->protected;
            case 'hash':
                return $this->hash;
            case 'size':
                return $this->size;
            case 'filetype':
                return $this->filetype;
            case 'filename_real':
                return $this->filename_real;
            case 'comment':
                return $this->comment;
            case 'inline':
                return $this->inline;
            case 'typeAlias':
                return $this->typeAlias;
            case 'caption':
                return $this->caption;
        }

        throw new InvalidArgumentException(sprintf('Property "%s" is not defined', $property));
    }

    /**
     * Get the table relevant properties. Override for your specific Object
     * 
     * @return array    Assocative array with the propertie values of table
     * 
     * @since   Kunena 6.4
     */
    protected function getTableProperties(): array
    {
        $properties = [
            'id'            => $this->id,
            'mesid'         => $this->mesid,
            'userid'        => $this->userid,
            'protected'     => $this->protected,
            'hash'          => $this->hash,
            'size'          => $this->size,
            'folder'        => $this->folder,
            'filetype'      => $this->filetype,
            'filename'      => $this->filename,
            'filename_real' => $this->filename_real,
            'caption'       => $this->caption,
            'inline'        => $this->inline
        ];

        return $properties;
    }

    /**
     * @return  void
     *
     * @internal
     *
     * @since   Kunena 4.0
     */
    protected function initialize(): void
    {
        $path = $this->getPath();

        if ($path && $this->isImage()) {
             $imageProperties = Image::getImageFileProperties($path);
             $this->width = $imageProperties->width;
             $this->height = $imageProperties->height;
        } else {
            $this->width = $this->height = 0;
        }
    }

    /**
     * Get path for the file.
     *
     * @param   bool  $thumb  thumb
     *
     * @return  string|false  Path to the file or false if file doesn't exist.
     *
     * @since   Kunena 4.0
     */
    public function getPath($thumb = false)
    {
        if ($thumb) {
            $path = JPATH_ROOT . "/{$this->folder}/thumb/{$this->filename}";
            $path = is_file($path) ? $path : false;
        } else {
            $path = JPATH_ROOT . "/{$this->folder}/{$this->filename}";
            $path = is_file($path) ? $path : false;
        }

        return $path;
    }

    /**
     * Check if KunenaAttachment is image.
     *
     * @return  boolean  True if KunenaAttachment is image.
     *
     * @since   Kunena 4.0
     */
    public function isImage(): bool
    {
        return stripos($this->filetype, 'image/') !== false;
    }

    /**
     * Check if KunenaAttachment is audio.
     *
     * @return  boolean  True if KunenaAttachment is image.
     *
     * @since  K5.1
     */
    public function isAudio(): bool
    {
        return stripos($this->filetype, 'audio/') !== false;
    }

    /**
     * Check if KunenaAttachment is audio.
     *
     * @return  boolean  True if KunenaAttachment is image.
     *
     * @since  K5.1
     */
    public function isVideo(): bool
    {
        return stripos($this->filetype, 'video/') !== false;
    }

    /**
     * Check if KunenaAttachment is inline.
     *
     * @return  boolean  True if KunenaAttachment is inline.
     *
     * @since  K5.1.9
     */
    public function isInline(): bool
    {
        if ($this->inline) {
            return true;
        }

        return false;
    }

    /**
     * Set inline to the KunenaAttachment object
     *
     * @param   int  $inline  inline
     *
     * @return  boolean
     *
     * @throws Exception
     * @since   Kunena 6.0
     */
    public function setInline(int $inline): bool
    {
        $this->inline = $inline;

        return $this->save();
    }

    /**
     * Get extension of file for output.
     *
     * @param   bool  $escape  escape
     *
     * @return  string
     *
     * @since   Kunena 4.0
     */
    public function getExtension($escape = true): string
    {
        $filename  = $this->protected ? $this->filename_real : $this->filename;
        $extension = pathinfo($filename, PATHINFO_EXTENSION);

        return $escape ? htmlspecialchars($extension, ENT_COMPAT, 'UTF-8') : $extension;
    }

    /**
     * This function shortens long filenames for display purposes.
     *
     * The first 8 characters of the filename, followed by three dots and the last 5 character of the filename.
     *
     * @param   int     $front   front
     * @param   int     $back    back
     * @param   string  $filler  filler
     * @param   bool    $escape  escape
     *
     * @return  string
     *
     * @since   Kunena 4.0
     */
    public function getShortName($front = 10, $back = 8, $filler = '...', $escape = true)
    {
        if ($this->shortname === null) {
            $this->shortname = KunenaAttachmentHelper::shortenFileName($this->getFilename(false), (int) $front, (int) $back, $filler);
        }

        return $escape ? htmlspecialchars($this->shortname, ENT_COMPAT, 'UTF-8') : $this->shortname;
    }

    /**
     * Get filename for output.
     *
     * @param   bool  $escape  escape
     *
     * @return  string
     *
     * @since   Kunena 4.0
     */
    public function getFilename($escape = true): string
    {
        $filename = $this->protected ? $this->filename_real : $this->filename;

        return $escape ? htmlspecialchars($filename, ENT_COMPAT, 'UTF-8') : $filename;
    }

    /**
     * Get URL pointing to the KunenaAttachment.
     *
     * @param   bool  $thumb   thumb
     * @param   bool  $inline  inline
     * @param   bool  $escape  escape
     *
     * @return  string
     *
     * @throws  Exception
     * @throws  null
     * @since   Kunena 4.0
     */
    public function getUrl($thumb = false, $inline = true, $escape = true): string
    {
        $protect = (bool) KunenaConfig::getInstance()->attachmentProtection;

        // Use direct URLs to the KunenaAttachments if protection is turned off and file wasn't protected.
        if (!$protect) {
            $file      = $this->folder . '/' . $this->filename;
            $fileThumb = $this->folder . '/thumb/' . $this->filename;

            if (!is_file(JPATH_ROOT . '/' . $fileThumb)) {
                $fileThumb = $file;
            }

            $url = ($thumb ? $fileThumb : $file);

            if (!Factory::getApplication()->isClient('administrator')) {
                $url = Uri::base() . $url;
            }

            return $escape ? htmlspecialchars($url, ENT_COMPAT, 'UTF-8') : $url;
        }

        // Route KunenaAttachment through Kunena.
        $thumb    = $thumb ? '&thumb=1' : '';
        $download = $inline ? '' : '&download=1';

        $url = KunenaRoute::_("index.php?option=com_kunena&view=attachment&id={$this->id}{$thumb}{$download}&format=raw", $escape);

        if (Factory::getContainer()->get(SiteApplication::class)->get('sef_suffix')) {
            $url = preg_replace('/.html/', '', $url);
        }

        if ($protect && $inline && $this->isPdf()) {
            $url = Uri::base() . $this->folder . '/' . $this->filename;
        }

        return $url;
    }

    /**
     * Check if KunenaAttachment is pdf.
     *
     * @return  boolean  True if KunenaAttachment is pdf.
     *
     * @since  K5.1
     */
    public function isPdf(): bool
    {
        return stripos($this->filetype, 'application/pdf') !== false;
    }

    /**
     * Get KunenaAttachment layout.
     *
     * @return  KunenaLayout
     *
     * @throws  Exception
     * @since   Kunena 6.0
     */
    public function getLayout(): KunenaLayout
    {
        return KunenaLayout::factory('Attachment/Item')->set('attachment', $this);
    }

    /**
     * @return  string
     *
     * @throws  Exception
     * @since   Kunena 4.0
     */
    public function getTextLink(): string
    {
        return (string) KunenaLayout::factory('Attachment/Item')->set('attachment', $this)->setLayout('textlink');
    }

    /**
     * @return string|null
     *
     * @since   Kunena 4.0
     * @throws \Exception
     */
    public function getImageLink(): ?string
    {
        return $this->isImage()
            ? (string) KunenaLayout::factory('Attachment/Item')->set('attachment', $this)->setLayout('image') : null;
    }

    /**
     * @return  string
     *
     * @throws  Exception
     * @since   Kunena 4.0
     */
    public function getThumbnailLink(): string
    {
        return (string) KunenaLayout::factory('Attachment/Item')->set('attachment', $this)->setLayout('thumbnail');
    }

    /**
     * Get author of the KunenaAttachment.
     *
     * @return  KunenaUser
     *
     * @throws  Exception
     * @since   Kunena 4.0
     */
    public function getAuthor(): KunenaUser
    {
        return KunenaUserHelper::get($this->userid);
    }

    /**
     * Returns true if user is authorised to do the action.
     *
     * @param   string           $action  action
     * @param   KunenaUser|null  $user    user
     *
     * @return  boolean
     *
     * @throws Exception
     * @since   Kunena 4.0
     */
    public function isAuthorised($action = 'read', ?KunenaUser $user = null)
    {
        return !$this->tryAuthorise($action, $user, false);
    }

    /**
     * Throws an exception if user isn't authorised to do the action.
     *
     * @param   string           $action  action
     * @param   KunenaUser|null  $user    user
     * @param   bool             $throw   throw
     *
     * @return  mixed|void
     *
     * @throws Exception
     * @since   Kunena 4.0
     */
    public function tryAuthorise($action = 'read', ?KunenaUser $user = null, $throw = true)
    {
        // Special case to ignore authorisation.
        if ($action == 'none') {
            return false;
        }

        // Load user if not given.
        if ($user === null) {
            $user = KunenaUserHelper::getMyself();
        }

        // Unknown action - throw invalid argument exception.
        if (!isset(self::$actions[$action])) {
            throw new InvalidArgumentException(Text::sprintf('COM_KUNENA_LIB_AUTHORISE_INVALID_ACTION', $action), 500);
        }

        // Start by checking if KunenaAttachment is protected.
        $exception = !$this->protected
            ? null : new KunenaExceptionAuthorise(Text::_('COM_KUNENA_ATTACHMENT_NO_ACCESS'), $user->id ? 403 : 401);

        // TODO: Add support for PROTECTION_PUBLIC
        // Currently we only support ACL checks, not public KunenaAttachments.
        if ($exception && $this->mesid && $this->protected && (self::PROTECTION_PUBLIC + self::PROTECTION_ACL)) {
            // Load message authorisation.
            $exception = $this->getMessage()->tryAuthorise('attachment.' . $action, $user, false);
        }

        // TODO: Add support for PROTECTION_FRIENDS
        // TODO: Add support for PROTECTION_MODERATORS
        // TODO: Add support for PROTECTION_ADMINS
        // Check if KunenaAttachment is private.
        if ($exception && $this->protected && self::PROTECTION_PRIVATE) {
            $exception = $this->authorisePrivate($user, $action);
        }

        // Check author access.
        if ($exception && $this->protected && self::PROTECTION_AUTHOR) {
            $exception = $user->exists() && $user->id == $this->userid
                ? null : new KunenaExceptionAuthorise(Text::_('COM_KUNENA_ATTACHMENT_NO_ACCESS'), $user->userid ? 403 : 401);
        }

        if ($exception) {
            // Hide original exception behind no access.
            $exception = new KunenaExceptionAuthorise(Text::_('COM_KUNENA_ATTACHMENT_NO_ACCESS'), $user->userid ? 403 : 401, $exception);
        } else {
            // Check authorisation action.
            foreach (self::$actions[$action] as $function) {
                $authFunction = 'authorise' . $function;

                try {
                    $exception = $this->$authFunction($user);

                    if ($exception) {
                        break;
                    }
                } catch (Exception $e) {
                    new KunenaExceptionAuthorise(Text::_('COM_KUNENA_ATTACHMENT_NO_ACCESS'), $user->userid ? 403 : 401, $e);
                }
            }
        }

        // Throw or return the exception.
        if ($throw && $exception) {
            throw $exception;
        }

        return $exception;
    }

    /**
     * Get message to which KunenaAttachment has been attached into.
     *
     * NOTE: Returns message object even if there isn't one. Please call $message->exists() to check if it exists.
     *
     * @return  KunenaMessage
     *
     * @throws  Exception
     * @since   Kunena 4.0
     */
    public function getMessage(): KunenaMessage
    {
        return KunenaMessageHelper::get($this->mesid);
    }

    /**
     * Check is an KunenaAttachment is private
     *
     * @param   KunenaUser  $user    user
     * @param   string      $action  action
     *
     * @return  KunenaExceptionAuthorise|null|bool
     *
     * @throws Exception
     * @since   Kunena 6.0
     */
    protected function authorisePrivate(KunenaUser $user, $action = '')
    {
        if (!$user->exists()) {
            return new KunenaExceptionAuthorise(Text::_('COM_KUNENA_ATTACHMENT_NO_ACCESS'), 401);
        }

        if ($action == 'create') {
            return false;
        }

        // Need to load private message (for now allow only one private message per KunenaAttachment).
        $db = Factory::getContainer()->get(DatabaseInterface::class);
        $map = new TableKunenaPrivateAttachmentMap($db);

        $map->load(['attachment_id' => $this->id]);
        $finder  = new KunenaPrivateMessageFinder();
        $private = $finder->where('id', '=', $map->private_id)->firstOrNew();

        if (!$private->exists()) {
            return new KunenaExceptionAuthorise(Text::_('COM_KUNENA_ATTACHMENT_NO_ACCESS'), 403);
        }

        if (\in_array($user->userid, $private->users()->getMapped())) {
            // Yes, I have access..
            return;
        } else {
            $messages = KunenaMessageHelper::getMessages($private->posts()->getMapped());

            foreach ($messages as $message) {
                if ($user->isModerator($message->getCategory())) {
                    // Yes, I have access..
                    return;
                }
            }
        }

        return new KunenaExceptionAuthorise(Text::_('COM_KUNENA_ATTACHMENT_NO_ACCESS'), 403);
    }

    /**
     * @param   string    $key    key
     * @param   int|null  $catid  catid
     *
     * @return bool
     *
     * @throws \Exception
     * @since   Kunena 4.0
     */
    public function upload(string $key = 'kattachment', ?int $catid = null): bool
    {
        $config    = KunenaFactory::getConfig();
        $input     = Factory::getApplication()->getInput();
        $fileInput = $input->files->get($key, null, 'raw');

        $upload = KunenaUpload::getInstance(KunenaAttachmentHelper::getExtensions($catid, $this->userid));

        $uploadBasePath = JPATH_ROOT . '/media/kunena/attachments/' . $this->userid . '/';

        if (!is_dir($uploadBasePath)) {
            mkdir(JPATH_ROOT . '/media/kunena/attachments/' . $this->userid . '/');
        }

        $upload->splitFilename($fileInput['name']);

        $fileInput['name'] = preg_replace('/[[:space:]]/', '', $fileInput['name']);

        $fileNameWithoutExt = File::stripExt($fileInput['name']);
        $fileNameWithoutExt = strtolower($fileNameWithoutExt);

        $fileExt = File::getExt($fileInput['name']);
        $fileExt = strtolower($fileExt);

        $fileNameWithExt = $fileInput['name'];
        $fileNameWithExt = strtolower($fileNameWithExt);

        if (file_exists($uploadBasePath . $fileInput['name'])) {
            for ($i = 2; file_exists($uploadBasePath . $fileNameWithoutExt . '.' . $fileExt); $i++) {
                $fileNameWithoutExt = $fileNameWithoutExt . "-$i";
                $fileNameWithExt    = $fileNameWithoutExt . '.' . $fileExt;
            }
        }

        $fileInput['name'] = $fileNameWithExt;

        $file = $upload->upload($fileInput, $uploadBasePath . $fileNameWithoutExt);

        if ($file->success) {
            if (\extension_loaded('fileinfo')) {
                $finfo = new finfo(FILEINFO_MIME);

                $type = $finfo->file($uploadBasePath . $fileNameWithExt);
            } else {
                throw new RuntimeException("Fileinfo extension not loaded.");
            }

            if (stripos($type, 'image/') !== false) {
                try {
                    $imageInfo = KunenaImage::getImageFileProperties($uploadBasePath . $fileNameWithExt);
                } catch (Exception $e) {
                    echo $e->getMessage();
                }

                if (number_format($file->size / 1024, 2) > $config->imageSize || $imageInfo->width > $config->imageWidth || $imageInfo->height > $config->imageHeight) {
                    // Calculate quality for both JPG and PNG.
                    $quality = $config->imageQuality;

                    if ($quality < 1 || $quality > 100) {
                        $quality = 70;
                    }

                    if ($imageInfo->type == IMAGETYPE_PNG) {
                        $quality = \intval(($quality - 1) / 10);
                    }

                    $options = ['quality' => $quality];

                    try {
                        $image = new KunenaImage($uploadBasePath . $fileNameWithExt);
                        $image = $image->resize($config->imageWidth, $config->imageHeight, false);
                        $image->toFile($uploadBasePath . $fileNameWithExt, $imageInfo->type, $options);
                        unset($image);
                    } catch (Exception $e) {
                        echo $e->getMessage();

                        return false;
                    }
                }

                $this->filetype = $imageInfo->mime;
            }

            $this->protected     = (bool) $config->attachmentProtection;
            $this->hash          = md5_file($uploadBasePath . $fileNameWithExt);
            $this->size          = $file->size;
            $this->folder        = 'media/kunena/attachments/' . $this->userid;
            $this->filename      = $fileInput['name'];
            $this->filename_real = $uploadBasePath . $fileNameWithExt;
            $this->caption       = '';
            $this->inline        = 0;

            return true;
        }

        return false;
    }

    /**
     * Say if the attachment belong to the user
     * 
     * @return boolean
     * @since   Kunena 6.3
     */
    public function isMyOwnPrivateAttachment()
    {
        if ($this->protected == 32) {
            $me       = KunenaUserHelper::getMyself();

            if ($this->userid == $me->userid) {
                return true;
            }
        }
    }

    /**
     * Set KunenaAttachment file.
     *
     * Copies the KunenaAttachment into proper location and makes sure that all the unset fields get properly assigned.
     *
     * @param   string          $source     Absolute path to the upcoming KunenaAttachment.
     * @param   string|null     $basename   Filename without extension.
     * @param   string|null     $extension  File extension.
     * @param   bool            $unlink     Whether to delete the original file or not.
     * @param   bool            $overwrite  If not allowed, throw exception if the file exists.
     *
     * @return  boolean
     *
     * @throws Exception
     * @since   Kunena 4.0
     */
    public function saveFile(string $source, $basename = null, $extension = null, $unlink = false, $overwrite = false): bool
    {
        if (!is_file($source)) {
            throw new InvalidArgumentException(__CLASS__ . '::' . __METHOD__ . '(): KunenaAttachment file not found.');
        }

        // Hash, size and MIME are set during saving, so let's deal with all other variables.
        $this->userid = \is_null($this->userid) ? KunenaUserHelper::getMyself() : $this->userid;
        $this->folder = \is_null($this->folder) ? "media/kunena/attachments/{$this->userid}" : $this->folder;
        $this->protected = KunenaConfig::getInstance()->attachmentProtection ? 1 : 0;

        if (!$this->filename_real) {
            $this->filename_real = $this->filename;
        }

        if (!$this->filename || $this->filename == $this->filename_real) {
            if (!$basename || !$extension) {
                throw new InvalidArgumentException(__CLASS__ . '::' . __METHOD__ . '(): Parameters $basename or $extension not provided.');
            }

            // Find available filename.
            $this->filename = KunenaAttachmentHelper::getAvailableFilename(
                $this->folder,
                $basename,
                $extension,
                $this->protected
            );
        }

        // Create target directory if it does not exist.
        if (!is_dir(JPATH_ROOT . "/{$this->folder}") && !Folder::create(JPATH_ROOT . "/{$this->folder}")) {
            throw new RuntimeException(Text::_('Failed to create KunenaAttachment directory.'));
        }

        $destination = JPATH_ROOT . "/{$this->folder}/{$this->filename}";

        // Move the file into the final location (if not already in there).
        if ($source != $destination) {
            // Create target directory if it does not exist.
            if (!$overwrite && is_file($destination)) {
                throw new RuntimeException(Text::sprintf('Attachment %s already exists.'), $this->filename_real);
            }

            if ($unlink) {
                @chmod($source, 0644);
            }

            $success = File::copy($source, $destination);

            if (!$success) {
                throw new RuntimeException(Text::sprintf('COM_KUNENA_UPLOAD_ERROR_NOT_MOVED', $destination));
            }

            KunenaPath::setPermissions($destination);

            if ($unlink) {
                unlink($source);
            }
        }

        return $this->save();
    }

    /**
     * Remove the BBCode [attachment=attachmentID][/attachment] from text message
     *
     * @param   string|null  $editor_text  editor text
     *
     * @return string
     *
     * @since   Kunena 6.0
     */
    public function removeBBCodeInMessage(?string $editor_text = null): string
    {
        if (!$this->inline) {
            return false;
        }

        if (empty($editor_text)) {
            return false;
        }

        $find    = ['/\[attachment=' . $this->id . '\](.*?)\[\/attachment\]/su'];
        $replace = '';

        return preg_replace($find, $replace, $editor_text);
    }

    /**
     * @param   KunenaUser  $user  user
     *
     * @return  KunenaExceptionAuthorise|void
     *
     * @since   Kunena 4.0
     */
    protected function authoriseExists(KunenaUser $user)
    {
        // Checks if KunenaAttachment exists
        if (!$this->exists()) {
            return new KunenaExceptionAuthorise(Text::_('COM_KUNENA_ATTACHMENT_NO_ACCESS'), 404);
        }

        return;
    }

    /**
     * @param   KunenaUser  $user  user
     *
     * @return  KunenaExceptionAuthorise|void
     *
     * @throws  Exception
     * @since   Kunena 4.0
     */
    protected function authoriseRead(KunenaUser $user)
    {
        // Checks if KunenaAttachment exists
        if (!$this->exists()) {
            return new KunenaExceptionAuthorise(Text::_('COM_KUNENA_ATTACHMENT_NO_ACCESS'), 404);
        }

        if (!$user->exists()) {
            $config = KunenaConfig::getInstance();

            if ($this->isImage() && !$config->showImgForGuest) {
                return new KunenaExceptionAuthorise(Text::_('COM_KUNENA_SHOWIMGFORGUEST_HIDEIMG'), 401);
            }

            if (!$this->isImage() && !$config->showFileForGuest) {
                return new KunenaExceptionAuthorise(Text::_('COM_KUNENA_SHOWIMGFORGUEST_HIDEFILE'), 401);
            }
        }

        return;
    }

    /**
     * @param   KunenaUser  $user  user
     *
     * @return  KunenaExceptionAuthorise|void
     *
     * @throws  Exception
     * @since   Kunena 4.0
     */
    protected function authoriseOwn(KunenaUser $user)
    {
        // Checks if KunenaAttachment is users own or user is moderator in the category (or global)
        if ($this->userid != $user->userid && !$user->isModerator($this->getMessage()->getCategory()) || !$user->exists() || $user->isBanned()) {
            return new KunenaExceptionAuthorise(Text::_('COM_KUNENA_ATTACHMENT_NO_ACCESS'), 403);
        }

        return;
    }
}