fix panic when files table is empty

init-db.sql

@@ -8,3 +8,4 @@ CREATE TABLE IF NOT EXISTS files (
 );
 
 ALTER TABLE files ADD COLUMN IF NOT EXISTS delete_on_download boolean;
+ALTER TABLE files ALTER COLUMN delete_on_download set not null;

src/deleter.rs

@@ -54,13 +54,13 @@ async fn delete_content(file_id: &str, files_dir: &Path) -> Result<(), std::io::
 }
 
 async fn wait_for_file_expiry(receiver: &Receiver<()>, db: &PgPool) {
-    let valid_till: Option<(NaiveDateTime,)> =
+    let valid_till: (Option<NaiveDateTime>,) =
         sqlx::query_as("SELECT MIN(valid_till) as min from files")
-            .fetch_optional(db)
+            .fetch_one(db)
             .await
             .expect("could not fetch expiring files from database");
-    let next_timeout = match valid_till {
+    let next_timeout = match valid_till.0 {
-        Some((valid_till,)) => valid_till.signed_duration_since(Local::now().naive_local()),
+        Some(valid_till) => valid_till.signed_duration_since(Local::now().naive_local()),
         None => Duration::days(1),
     };
     let positive_timeout = next_timeout

src/multipart.rs

@@ -53,7 +53,7 @@ pub(crate) async fn parse_multipart(
                 size = create_file(file_name, field, config.max_file_size).await?;
             }
             "delete_on_download" => {
-                delete_on_download = dbg!(parse_string(name, field).await?) != "false";
+                delete_on_download = parse_string(name, field).await? != "false";
             }
             "password" => {
                 password = Some(parse_string(name, field).await?);