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<?php |
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/* For licensing terms, see /license.txt */ |
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namespace moodleexport; |
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use DocumentManager; |
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use Exception; |
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/** |
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* Class FileExport. |
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* Handles the export of files and metadata from Moodle courses. |
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* |
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* @package moodleexport |
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*/ |
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class FileExport |
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{ |
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private $course; |
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/** |
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* Constructor to initialize course data. |
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* |
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* @param object $course Course object containing resources and path data. |
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*/ |
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public function __construct($course) |
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{ |
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$this->course = $course; |
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} |
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/** |
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* Export files and metadata from files.xml to the specified directory. |
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*/ |
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public function exportFiles(array $filesData, string $exportDir): void |
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{ |
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$filesDir = $exportDir.'/files'; |
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if (!is_dir($filesDir)) { |
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mkdir($filesDir, api_get_permissions_for_new_directories(), true); |
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} |
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// Create placeholder index.html |
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$this->createPlaceholderFile($filesDir); |
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// Export each file |
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foreach ($filesData['files'] as $file) { |
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$this->copyFileToExportDir($file, $filesDir); |
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} |
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// Create files.xml in the export directory |
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$this->createFilesXml($filesData, $exportDir); |
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} |
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/** |
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* Get file data from course resources. This is for testing purposes. |
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*/ |
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public function getFilesData(): array |
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{ |
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$adminData = MoodleExport::getAdminUserData(); |
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$adminId = $adminData['id']; |
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$filesData = ['files' => []]; |
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foreach ($this->course->resources[RESOURCE_DOCUMENT] as $document) { |
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$filesData = $this->processDocument($filesData, $document); |
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} |
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foreach ($this->course->resources[RESOURCE_WORK] as $work) { |
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$workFiles = getAllDocumentToWork($work->params['id'], $this->course->info['real_id']); |
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if (!empty($workFiles)) { |
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foreach ($workFiles as $file) { |
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$docData = DocumentManager::get_document_data_by_id($file['document_id'], $this->course->info['code']); |
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if (!empty($docData)) { |
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$filesData['files'][] = [ |
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'id' => $file['document_id'], |
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'contenthash' => hash('sha1', basename($docData['path'])), |
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'contextid' => $this->course->info['real_id'], |
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'component' => 'mod_assign', |
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'filearea' => 'introattachment', |
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'itemid' => (int) $work->params['id'], |
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'filepath' => '/Documents/', |
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'documentpath' => 'document/'.$docData['path'], |
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'filename' => basename($docData['path']), |
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'userid' => $adminId, |
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'filesize' => $docData['size'], |
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'mimetype' => $this->getMimeType($docData['path']), |
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'status' => 0, |
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'timecreated' => time() - 3600, |
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'timemodified' => time(), |
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'source' => $docData['title'], |
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'author' => 'Unknown', |
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'license' => 'allrightsreserved', |
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]; |
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} |
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} |
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} |
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} |
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return $filesData; |
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} |
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/** |
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* Create a placeholder index.html file to prevent an empty directory. |
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*/ |
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private function createPlaceholderFile(string $filesDir): void |
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{ |
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$placeholderFile = $filesDir.'/index.html'; |
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file_put_contents($placeholderFile, "<!-- Placeholder file to ensure the directory is not empty -->"); |
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} |
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/** |
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* Copy a file to the export directory using its contenthash. |
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*/ |
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private function copyFileToExportDir(array $file, string $filesDir): void |
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{ |
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if ($file['filepath'] === '.') { |
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return; |
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} |
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$contenthash = $file['contenthash']; |
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$subDir = substr($contenthash, 0, 2); |
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$filePath = $this->course->path.$file['documentpath']; |
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$exportSubDir = $filesDir.'/'.$subDir; |
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// Ensure the subdirectory exists |
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if (!is_dir($exportSubDir)) { |
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mkdir($exportSubDir, api_get_permissions_for_new_directories(), true); |
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} |
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// Copy the file to the export directory |
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$destinationFile = $exportSubDir.'/'.$contenthash; |
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if (file_exists($filePath)) { |
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copy($filePath, $destinationFile); |
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} else { |
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throw new Exception("File {$filePath} not found."); |
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} |
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} |
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/** |
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* Create the files.xml with the provided file data. |
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*/ |
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private function createFilesXml(array $filesData, string $destinationDir): void |
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{ |
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$xmlContent = '<?xml version="1.0" encoding="UTF-8"?>'.PHP_EOL; |
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$xmlContent .= '<files>'.PHP_EOL; |
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foreach ($filesData['files'] as $file) { |
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$xmlContent .= $this->createFileXmlEntry($file); |
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} |
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$xmlContent .= '</files>'.PHP_EOL; |
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file_put_contents($destinationDir.'/files.xml', $xmlContent); |
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} |
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/** |
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* Create an XML entry for a file. |
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*/ |
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private function createFileXmlEntry(array $file): string |
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{ |
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return ' <file id="'.$file['id'].'">'.PHP_EOL. |
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' <contenthash>'.htmlspecialchars($file['contenthash']).'</contenthash>'.PHP_EOL. |
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' <contextid>'.$file['contextid'].'</contextid>'.PHP_EOL. |
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' <component>'.htmlspecialchars($file['component']).'</component>'.PHP_EOL. |
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' <filearea>'.htmlspecialchars($file['filearea']).'</filearea>'.PHP_EOL. |
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' <itemid>0</itemid>'.PHP_EOL. |
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' <filepath>'.htmlspecialchars($file['filepath']).'</filepath>'.PHP_EOL. |
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' <filename>'.htmlspecialchars($file['filename']).'</filename>'.PHP_EOL. |
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' <userid>'.$file['userid'].'</userid>'.PHP_EOL. |
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' <filesize>'.$file['filesize'].'</filesize>'.PHP_EOL. |
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' <mimetype>'.htmlspecialchars($file['mimetype']).'</mimetype>'.PHP_EOL. |
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' <status>'.$file['status'].'</status>'.PHP_EOL. |
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' <timecreated>'.$file['timecreated'].'</timecreated>'.PHP_EOL. |
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' <timemodified>'.$file['timemodified'].'</timemodified>'.PHP_EOL. |
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' <source>'.htmlspecialchars($file['source']).'</source>'.PHP_EOL. |
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' <author>'.htmlspecialchars($file['author']).'</author>'.PHP_EOL. |
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' <license>'.htmlspecialchars($file['license']).'</license>'.PHP_EOL. |
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' <sortorder>0</sortorder>'.PHP_EOL. |
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' <repositorytype>$@NULL@$</repositorytype>'.PHP_EOL. |
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' <repositoryid>$@NULL@$</repositoryid>'.PHP_EOL. |
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' <reference>$@NULL@$</reference>'.PHP_EOL. |
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' </file>'.PHP_EOL; |
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} |
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/** |
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* Process a document or folder and add its data to the files array. |
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*/ |
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private function processDocument(array $filesData, object $document): array |
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{ |
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if ( |
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$document->file_type === 'file' && |
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pathinfo($document->path, PATHINFO_EXTENSION) === 'html' && |
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substr_count($document->path, '/') === 1 |
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) { |
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return $filesData; |
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} |
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if ($document->file_type === 'file') { |
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$extension = pathinfo($document->path, PATHINFO_EXTENSION); |
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if (!in_array(strtolower($extension), ['html', 'htm'])) { |
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$fileData = $this->getFileData($document); |
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$fileData['filepath'] = '/Documents/'; |
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$fileData['contextid'] = 0; |
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$fileData['component'] = 'mod_folder'; |
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$filesData['files'][] = $fileData; |
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} |
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} elseif ($document->file_type === 'folder') { |
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$folderFiles = \DocumentManager::getAllDocumentsByParentId($this->course->info, $document->source_id); |
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foreach ($folderFiles as $file) { |
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$filesData['files'][] = $this->getFolderFileData($file, (int) $document->source_id, '/Documents/'.dirname($file['path']).'/'); |
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} |
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} |
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return $filesData; |
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} |
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/** |
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* Get file data for a single document. |
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*/ |
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private function getFileData(object $document): array |
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{ |
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$adminData = MoodleExport::getAdminUserData(); |
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$adminId = $adminData['id']; |
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$contenthash = hash('sha1', basename($document->path)); |
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$mimetype = $this->getMimeType($document->path); |
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return [ |
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'id' => $document->source_id, |
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'contenthash' => $contenthash, |
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'contextid' => $document->source_id, |
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'component' => 'mod_resource', |
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'filearea' => 'content', |
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'itemid' => (int) $document->source_id, |
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'filepath' => '/', |
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'documentpath' => $document->path, |
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'filename' => basename($document->path), |
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'userid' => $adminId, |
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'filesize' => $document->size, |
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'mimetype' => $mimetype, |
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'status' => 0, |
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'timecreated' => time() - 3600, |
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'timemodified' => time(), |
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'source' => $document->title, |
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'author' => 'Unknown', |
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'license' => 'allrightsreserved', |
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]; |
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} |
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/** |
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* Get file data for files inside a folder. |
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*/ |
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private function getFolderFileData(array $file, int $sourceId, string $parentPath = '/Documents/'): array |
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{ |
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$adminData = MoodleExport::getAdminUserData(); |
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$adminId = $adminData['id']; |
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$contenthash = hash('sha1', basename($file['path'])); |
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$mimetype = $this->getMimeType($file['path']); |
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$filename = basename($file['path']); |
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$filepath = $this->ensureTrailingSlash($parentPath); |
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return [ |
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'id' => $file['id'], |
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'contenthash' => $contenthash, |
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'contextid' => $sourceId, |
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'component' => 'mod_folder', |
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'filearea' => 'content', |
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'itemid' => (int) $file['id'], |
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'filepath' => $filepath, |
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'documentpath' => 'document/'.$file['path'], |
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'filename' => $filename, |
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'userid' => $adminId, |
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'filesize' => $file['size'], |
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'mimetype' => $mimetype, |
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'status' => 0, |
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'timecreated' => time() - 3600, |
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'timemodified' => time(), |
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'source' => $file['title'], |
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'author' => 'Unknown', |
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'license' => 'allrightsreserved', |
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]; |
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} |
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/** |
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* Ensure the directory path has a trailing slash. |
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*/ |
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private function ensureTrailingSlash(string $path): string |
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{ |
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if (empty($path) || $path === '.' || $path === '/') { |
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return '/'; |
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} |
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$path = preg_replace('/\/+/', '/', $path); |
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return rtrim($path, '/').'/'; |
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} |
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/** |
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* Get MIME type based on the file extension. |
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*/ |
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private function getMimeType($filePath): string |
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{ |
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$extension = pathinfo($filePath, PATHINFO_EXTENSION); |
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$mimeTypes = $this->getMimeTypes(); |
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return $mimeTypes[$extension] ?? 'application/octet-stream'; |
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} |
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/** |
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* Get an array of file extensions and their corresponding MIME types. |
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*/ |
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private function getMimeTypes(): array |
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311
|
|
|
{ |
|
312
|
|
|
return [ |
|
313
|
|
|
'pdf' => 'application/pdf', |
|
314
|
|
|
'jpg' => 'image/jpeg', |
|
315
|
|
|
'jpeg' => 'image/jpeg', |
|
316
|
|
|
'png' => 'image/png', |
|
317
|
|
|
'gif' => 'image/gif', |
|
318
|
|
|
'html' => 'text/html', |
|
319
|
|
|
'txt' => 'text/plain', |
|
320
|
|
|
'doc' => 'application/msword', |
|
321
|
|
|
'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', |
|
322
|
|
|
'xls' => 'application/vnd.ms-excel', |
|
323
|
|
|
'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', |
|
324
|
|
|
'ppt' => 'application/vnd.ms-powerpoint', |
|
325
|
|
|
'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation', |
|
326
|
|
|
'zip' => 'application/zip', |
|
327
|
|
|
'rar' => 'application/x-rar-compressed', |
|
328
|
|
|
]; |
|
329
|
|
|
} |
|
330
|
|
|
} |
|
331
|
|
|
|