fixes

src/storage.rs

@@ -216,6 +216,29 @@ impl From<std::io::Error> for StorageError {
     }
 }
 
+pub async fn delete_url_file(
+    storage: &Storage,
+    kind: &str,
+    owner_id: i64,
+    url: &str,
+) -> Result<(), StorageError> {
+    let parts: Vec<&str> = url.trim_start_matches('/').split('/').collect();
+    if parts.len() != 3 || parts[0] != "f" {
+        return Ok(());
+    }
+    let filename = sanitize_storage_filename(parts[2]);
+    storage
+        .delete(&object_key(kind, owner_id, parts[1], &filename))
+        .await
+}
+
+fn sanitize_storage_filename(value: &str) -> String {
+    value
+        .chars()
+        .filter(|c| c.is_ascii_alphanumeric() || matches!(c, '.' | '-' | '_'))
+        .collect::<String>()
+}
+
 pub fn object_key(kind: &str, owner_id: i64, token: &str, filename: &str) -> String {
     format!("{kind}/{owner_id}_{token}/{filename}")
 }