From 65a72c2b7d15d0eb54335b1db5940a81f359f606 Mon Sep 17 00:00:00 2001
From: Carson Tam <ctam@users.noreply.github.com>
Date: Fri, 3 Apr 2026 22:50:56 -0700
Subject: [PATCH] Implement delete_submissions method

Added a method to delete multiple submissions based on request data. Fixes #497
---
 .../kalvid/classes/privacy/provider.php       | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/mod/assign/submission/kalvid/classes/privacy/provider.php b/mod/assign/submission/kalvid/classes/privacy/provider.php
index 26da05d6..25aeeb40 100644
--- a/mod/assign/submission/kalvid/classes/privacy/provider.php
+++ b/mod/assign/submission/kalvid/classes/privacy/provider.php
@@ -134,4 +134,29 @@ public static function delete_submission_for_userid(assign_plugin_request_data $
         $DB->delete_records('assignsubmission_kalvid', ['assignment' => $deletedata->get_assignid(),
             'submission' => $submissionid]);
     }
+
+    /**
+     * Delete multiple submissions for a given context.
+     *
+     * @param \mod_assign\privacy\assign_plugin_request_data $requestdata
+     */
+    public static function delete_submissions(assign_plugin_request_data $requestdata) {
+        global $DB;
+
+        $submissionids = $requestdata->get_submissionids();
+
+        if (empty($submissionids)) {
+            return;
+        }
+
+        list($insql, $params) = $DB->get_in_or_equal($submissionids, SQL_PARAMS_NAMED);
+
+        $params['assignment'] = $requestdata->get_assignid();
+
+        $DB->delete_records_select(
+            'assignsubmission_kalvid',
+            "assignment = :assignment AND submission $insql",
+            $params
+        );
+    }
 }