MDL-77991 filelib: Allow groups to generate svgs

group/upgrade.txt

@@ -7,6 +7,16 @@ information provided here is intended especially for developers.
   - `core_group_get_course_groups`
   - `core_group_get_course_user_groups`
   - `core_group_get_activity_allowed_groups`
+* Groups now have access to create GeoPattern default images based upon their ID with their associated course context.
+  This can be done by calling the following:
+       moodle_url::make_pluginfile_url(
+           $coursecontext->id,
+           'group',
+           'generated',
+           $group->id,
+           '/',
+           'group.svg'
+       );
 
 === 4.2 ===
 * `\core_group\visibility` class added to support new `visibility` field in group records. This holds the visibility constants

lib/filelib.php

@@ -5029,6 +5029,18 @@ function file_pluginfile($relativepath, $forcedownload, $preview = null, $offlin
             \core\session\manager::write_close(); // Unlock session during file serving.
             send_stored_file($file, 60*60, 0, false, $sendfileoptions);
 
+        } else if ($filearea === 'generated') {
+            if ($CFG->forcelogin) {
+                require_login($course);
+            } else if ($course->id != SITEID) {
+                require_login($course);
+            }
+
+            $svg = $OUTPUT->get_generated_svg_for_id($group->id);
+
+            \core\session\manager::write_close(); // Unlock session during file serving.
+            send_file($svg, 'group.svg', 60 * 60, 0, true, $forcedownload);
+
         } else {
             send_file_not_found();
         }