MDL-74424 repository_googledocs: Respect default import formats

Makes sure that the correct file extension is attributed when importing
a file using the Google Drive repository based on the set configuration
values for the default import format settings.

repository/googledocs/classes/local/node/file_node.php

@@ -49,6 +49,9 @@ class file_node implements node {
     /** @var string The thumbnail of the file. */
     private $thumbnail;
 
+    /** @var string|null The type of the Google Doc file (document, presentation, etc.), null if it is a regular file. */
+    private $googledoctype;
+
     /**
      * Constructor.
      *
@@ -72,6 +75,8 @@ public function __construct(\stdClass $gdfile) {
         // in displaying 16px file thumbnails in the repository. To avoid this, the link can be slightly modified in
         // order to get a larger version of the icon as there isn't an option to request this through the API call.
         $this->thumbnail = !empty($gdfile->iconLink) ? str_replace('/16/', '/64/', $gdfile->iconLink) : '';
+        $this->googledoctype = !isset($gdfile->fileExtension) ?
+            str_replace('application/vnd.google-apps.', '', $gdfile->mimeType) : null;
     }
 
     /**
@@ -97,6 +102,7 @@ public function create_node_array(): ?array {
                     'name' => $this->name,
                     'link' => $this->link,
                     'exportformat' => $this->exportformat,
+                    'googledoctype' => $this->googledoctype,
                 ]
             ),
             'date' => $this->modified,

repository/googledocs/lib.php

@@ -528,8 +528,26 @@ public function get_file($reference, $filename = '') {
             if ($checktype == 'application/rtf') {
                 $checktype = 'text/rtf';
             }
+            // Determine the relevant default import format config for the given file.
+            switch ($source->googledoctype) {
+                case 'document':
+                    $importformatconfig = get_config('googledocs', 'documentformat');
+                    break;
+                case 'presentation':
+                    $importformatconfig = get_config('googledocs', 'presentationformat');
+                    break;
+                case 'spreadsheet':
+                    $importformatconfig = get_config('googledocs', 'spreadsheetformat');
+                    break;
+                case 'drawing':
+                    $importformatconfig = get_config('googledocs', 'drawingformat');
+                    break;
+                default:
+                    $importformatconfig = null;
+            }
+
             foreach ($types as $extension => $info) {
-                if ($info['type'] == $checktype) {
+                if ($info['type'] == $checktype && $extension === $importformatconfig) {
                     $newfilename = $source->name . '.' . $extension;
                     break;
                 }