new: Create database backups before opening

actix/src/main.rs

@@ -11,6 +11,7 @@ use actix_web::{
 };
 use log::info;
 use rusqlite::Connection;
+use std::fs;
 pub(crate) use std::io::Result;
 use tokio::{spawn, time};
 
@@ -79,6 +80,22 @@ async fn main() -> Result<()> {
 
     // Do periodic cleanup
     let db_location_clone = conf.db_location.clone();
+    // Create backups if WAL mode is being used
+    if conf.use_wal_mode {
+        info!("Creating database backups.");
+        if fs::exists(format!("{db_location_clone}.bak1")).ok() == Some(true) {
+            fs::rename(
+                format!("{db_location_clone}.bak1"),
+                format!("{db_location_clone}.bak2"),
+            )
+            .expect("Error creating backups.");
+        }
+        if fs::exists(&db_location_clone).ok() == Some(true) {
+            fs::copy(&db_location_clone, format!("{db_location_clone}.bak1"))
+                .expect("Error creating backups.");
+        }
+    }
+
     info!("Starting cleanup service, will run once every hour.");
     spawn(async move {
         let db = database::open_db(db_location_clone, conf.use_wal_mode);