Issue #2120227 by gafolini, Ellinokon and falcon: Add export feature to H5P

h5p.classes.php

@@ -219,6 +219,122 @@ interface H5PFrameworkInterface {
    *  Library Id
    */
   public function deleteLibraryDependencies($libraryId);
+
+  /**
+   * Get the paths we need to export
+   *
+   * @param int $contentId
+   * @param string $title
+   * @param string $language
+   * @return export object
+   */
+  public function getExportData($contentId, $title, $language);
+  /**
+   * Check if export is enabled.
+   */
+  public function exportEnabled();
+}
+
+/**
+* This class is used for exporting zips
+*/
+Class H5PExport {
+  public $h5pF;
+  public $h5pC;
+
+  /**
+   * Constructor for the H5PStorage
+   *
+   * @param object $H5PFramework
+   *  The frameworks implementation of the H5PFrameworkInterface
+   */
+  public function __construct($H5PFramework, $H5PCore) {
+    $this->h5pF = $H5PFramework;
+    $this->h5pC = $H5PCore;
+  }
+  /**
+   * Create the h5p package
+   *
+   * @param object $exports
+   * The data to be exported.
+   * @return h5p package.
+   */
+  public function exportToZip($exports) {
+    $h5pDir = $this->h5pF->getH5pPath() . DIRECTORY_SEPARATOR;
+    $tempPath = $h5pDir . 'temp' . DIRECTORY_SEPARATOR . $exports['contentId'];
+    $zipPath = $h5pDir . 'exports' . DIRECTORY_SEPARATOR . $exports['contentId'] . '.h5p';
+    // Check if h5p-package already exists.
+    if (!file_exists($zipPath) == true) {
+      // Temp dir to put the h5p files in
+      @mkdir($tempPath);
+      $this->h5pC->copyTree($h5pDir . 'content' . DIRECTORY_SEPARATOR . $exports['contentId'], $tempPath . DIRECTORY_SEPARATOR . 'content');
+      // Copies libraries to temp dir and create mention in h5p.json
+      foreach($exports['libraries'] as $library) {
+        $source = $h5pDir . 'libraries' . DIRECTORY_SEPARATOR . $library['machine_name'] . '-' . $library['major_version'] . '.' . $library['minor_version'];
+        $destination = $tempPath . DIRECTORY_SEPARATOR . $library['machine_name'];
+        $this->h5pC->copyTree($source, $destination);
+
+        // Set preloaded and dynamic dependencies
+        if ($library['preloaded']) {
+          $preloadedDependencies[] = array(
+            'machineName' => $library['machine_name'],
+            'majorVersion' => $library['major_version'],
+            'minorVersion' => $library['minor_version'],
+          );
+        } else {
+          $dynamicDependencies[] = array(
+            'machineName' => $library['machine_name'],
+            'majorVersion' => $library['major_version'],
+            'minorVersion' => $library['minor_version'],
+          );
+        }
+      }
+      // Make embedTypes into an array
+      $embedTypes = explode(', ', $exports['embed_type']);
+
+      // Build h5p.json
+      $h5pJson = array (
+        'title' => $exports['title'],
+        'language' => $exports['language'],
+        'mainLibrary' => $exports['mainLibrary'],
+        'embedTypes' => $embedTypes,
+        );
+      // Add preloaded and dynamic dependencies if they exist
+      if ($preloadedDependencies) { $h5pJson['preloadedDependencies'] = $preloadedDependencies; }
+      if ($dynamicDependencies) { $h5pJson['dynamicDependencies'] = $dynamicDependencies; }
+
+      // Save h5p.json
+      $results = print_r(json_encode($h5pJson), true);
+      file_put_contents($tempPath . DIRECTORY_SEPARATOR . 'h5p.json', $results);
+
+      // Create new zip instance.
+      $zip = new ZipArchive();
+      $zip->open($zipPath, ZIPARCHIVE::CREATE);
+
+      // Get all files and folders in $tempPath
+      $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($tempPath . DIRECTORY_SEPARATOR));
+      // Add files to zip
+      foreach ($iterator as $key=>$value) {
+        $test = '.';
+        // Do not add the folders '.' and '..' to the zip. This will make zip invalid.
+        if (substr_compare($key, $test, -strlen($test), strlen($test)) !== 0) {
+          // Get files path in $tempPath
+          $filePath = explode($tempPath . DIRECTORY_SEPARATOR, $key);
+          // Add files to the zip with the intended file-structure
+          $zip->addFile($key, $filePath[1]);
+        }
+      }
+      // Close zip and remove temp dir
+      $zip->close();
+      @rmdir($tempPath);
+    }
+
+    // Set headers for automagic download!!
+    header('Content-Description: File Transfer');
+    header('Content-Type: application/zip');
+    header('Content-Disposition: attachment; filename=' . $exports['title'] . '.h5p');
+    readfile ($zipPath);
+  }
 }
 
 /**

js/h5p.js

@@ -62,6 +62,10 @@ H5P.init = function () {
         H5P.fullScreen($el, obj);
         return false;
       });
+    };
+
+    if (H5PIntegration.getExport()) {
+      H5P.jQuery('<div class="h5p-export"><a href="' + window.location + '/h5p-export">Last ned H5P</a></div>').insertAfter($el).children();
     }
   });